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Chemical composition and bioactivity of essential oil from the leaves of Scorodocarpus borneensis Becc. (Olacaceae) grown in Indonesia

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The essential oil of Scorodocarpus borneensis Becc. (Olacaceae) was obtained from its leaves by steam distillation. In this study, S. borneensis leaves yielded a clear yellowish essential oil. Its chemical composition was analyzed by GC-MS. Six chemical compounds were identified, and most components of the essential oil of S. borneensis leaves were sulfurcontaining compounds, such as trisulfide, dimethyl, methyl (methylsulfinyl) methyl sulfide, 2,4,6-trithiaheptane-2,2-dioxide, and methane, (methylsulfinyl) (methylthio). The major compounds are 2,4,6-trithiaheptane-2,2-dioxide (43.35%), and methyl (methylsulfinyl) methyl sulfide (34.03%). Anti-microbial properties were determined using the agar diffusion method. Four different microorganisms were used in this study: Streptococcus sobrinus, S. mutans, Staphylococcus aureus and Candida albicans. The zone of inhibition and activity index were measured and compared against a known synthetic standard. The essential oil showed strong activity against all tested microorganisms. Anti-oxidant activity was assayed with 1,1-diphenyl-2-picrylhydrazyl (DPPH) with ascorbic acid as a positive control. The essential oil has potency to inhibit free radicals at concentrations of 25-1,000 μg/mL. The results indicated that S. borneensis leaves oil is a good, new natural anti-microbial agent for oral pathogens.
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ASIA
LIFE
SCIENCES
The Asian International
Journal of Life Sciences
ISSN 0117-3375
REPRINT
Beyond Excellence©
VOLUME 27(2) JULY-DECEMBER 2018
Chemical composition and bioactivity of essential oil
from the leaves of Scorodocarpus borneensis Becc.
(Olacaceae) grown in Indonesia
HARLINDA KUSPRADINI, SAAT EGRA,
INDAH WULANDARI and AGMI SINTA PUTRI
e-mails: asialifesciences@yahoo.com wsmgruezo@gmail.com
Website - http://www.sersc.org/journals/ALS/
©Rushing Water Publishers Ltd., 2018 Printed in the Philippines
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ASIA LIFE SCIENCES 27(2): 343-353, 2018
The Asian International Journal of Life Sciences
Received 02 September 2018; Accepted 22 October 2018
©Rushing Water Publishers Ltd. 2018
Chemical composition and bioactivity of essential oil
from the leaves of Scorodocarpus borneensis Becc.
(Olacaceae) grown in Indonesia
HARLINDA KUSPRADINI1*, SAAT EGRA1,
INDAH WULANDARI1 and AGMI SINTA PUTRI1
The essential oil of Scorodocarpus borneensis Becc. (Olacaceae) was obtained from
its leaves by steam distillation. In this study, S. borneensis leaves yielded a clear yellowish
essential oil. Its chemical composition was analyzed by GC-MS. Six chemical compounds
were identied, and most components of the essential oil of S. borneensis leaves were sulfur-
containing compounds, such as trisulde, dimethyl, methyl (methylsulnyl) methyl sulde,
2,4,6-trithiaheptane-2,2-dioxide, and methane, (methylsulnyl) (methylthio). The major
compounds are 2,4,6-trithiaheptane-2,2-dioxide (43.35%), and methyl (methylsulnyl)
methyl sulde (34.03%). Anti-microbial properties were determined using the agar diffusion
method. Four different microorganisms were used in this study: Streptococcus sobrinus,
S. mutans, Staphylococcus aureus and Candida albicans. The zone of inhibition and activity
index were measured and compared against a known synthetic standard. The essential oil
showed strong activity against all tested microorganisms. Anti-oxidant activity was assayed
with 1,1-diphenyl-2-picrylhydrazyl (DPPH) with ascorbic acid as a positive control. The
essential oil has potency to inhibit free radicals at concentrations of 25-1,000 µg/mL. The
results indicated that S. borneensis leaves oil is a good, new natural anti-microbial agent for
oral pathogens.
Keywords: Scorodocarpus borneensis Becc., Olacaceae, essential oil, distillation,
agar diffusion, DPPH, GC/MS, sulf ur-containing compounds, anti-oxidant activity,
anti-microbial agent, oral pathogens, Streptococcus sobrinus, S. mutans, Staphylococcus
aureus, Candida albicans
1Faculty of Forest ry, Mulawar man University, Jl. Ki Hajar Dewantara, Gunung Kelua, Samarinda,
East Kalimant an, Indonesia
*Corresponding author: e-mail - hkuspradini@fahutan.unmul.ac.id
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Asia Life Sciences 27(2) 2018
INTRODUCTION
Scorodocarpus borneensis Becc. (Olacaceae) is a tall tree that grows naturally
on the island of Borneo and in the Malay Peninsula. The local people refer to it as
“wood garlic” due to its strong garlic odor. The aroma of garlic is present in the
leaves, flowers and fruits. The falling fruit has a rugged hard skin and is similar in
shape and size to a walnut (Burkill 1935). The older leaves are used as a seasoning
rather than consumed as a vegetable (Hoe & Siong 1999). The decoctions of
S. borneensis roots are taken orally to cure hemorrhoids (Mohammad et al. 2012).
In Sarawak, the leaves and bark are boiled and drunk to treat leprosy and diabetes
(Lim et al. 2012).
Sesquiterpenscodopin and scorodocarpines are found in the fruits of
S. borneensis and hemi-synthetic sesquiterpene and cadalene-β-carboxylic acid
are found in its bark (Wiart et al. 2001). In previous studies, other compounds
have been isolated and identif ied from the fruits of S. borneensis, including
sulfur-containing compounds, such as 2,4,5-trithiahexane, 2,4,5,7-tetrathiaoctane,
2,4,5,7-tetrathiaoctane 2,2-dioxide, and 2,4,57-tetrathiaoctane 4,4-dioxide
(Kubota et al. 1999a, b; Lim et al. 1998). Kubota & Kobayashi (1994)9 found that
components from the fruits of S. borneensis were useful as a natural preservative.
Most components in the fruits of S. borneensis were sulfur-containing compounds,
such as methyl methylthiomethyl disulfide and bis(methylthiomethyl) disulfide.
Many higher and aromatic plant-derived medicines used in folk medicinal
systems have been reported as agents used to treat infectious diseases, and a number
of these medicines have been investigated for their eff icacy against oral pathogens.
Essential oils from several plant species, namely: Cinnamomum zeylanicum Blume
(L aurac eae), Citrus aurantiifolia (Christm.) Swingle (Rutaceae), Lippia graveolens
Kunth (Verbenaceae), and Origanum vulgare L. (Lamiaceae) can control
microorganisms related to oral bacteria (Miller et al. 2 015).
To the best of our knowledge, no reports on the chemical compounds of
essential oil from the leaves of S. borneensis have been published so far and little is
known about the anti-microbial activity against oral pathogens or the effects
on dental plaque formation in vitro. Thus, in the present study, essential oil was
distilled from plant leaves collected in East Kalimantan, and oil composition was
analyzed by gas chromatography mass spectrometry (GC/MS). Furthermore, its
anti-microbial activity against four oral pathogens and anti-oxidant activities were
assayed.
MATER IALS AND METHODS
Leaves of Scorodocarpus borneensis were collected from t he Botanical Garden
of Mulawarman University, East Kalimantan, Indonesia. The leaves were dried and
prepared in one day. Glucose, nutrient broth and anhydrous sodium sulfate were
obtained from Merck (Darmstad, Germany). DPPH (1,1-diphenyl-2-picrylhydrazyl)
was purchased from Wako Crude Chemical Industries, Ltd., Japan. Other chemicals
were commercially available. The plant name was verified as the accepted name
of the species in the genus Scorodocarpus (Olacaceae) at www.theplantlist.org. A
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Bioactivity of essential oil from leaves of Scorodocarpus borneensis
Asia Life Sciences 27(2) 2018
voucher specimen was deposited in the Dendrology Laboratorium of Mulawarman
Un iver s ity.
Steam distillation method. Steam distillation is used widely in isolating liquids
from natural sources. The leaves into the kettle are placed on a hollow plate over
boiling water. The essential oil is evaporated for 4 hours or more. The oils were
collected and separated using a separatory funnel after the steam distillation
process. Oil and water will separate and form two layers. Oil that has a higher
density of air will sink to the bottom while some oil does not sink and will be
trapped at the top of the separation funnel. The process of separating and collecting
oil is repeated several times until no oil is left in the separation funnel and nothing
else can be obtained. Anhydrous sodium sulfate was used to adsorb the residual
water that fused with the oil. The quantity of oil was determined according to the
yield (Kuspradini et al. 2 016 ).
The percent and yield of essential oil was calculated by following formula
(Siddiqui et al. 2006):
%Yield = [Weight of oil (grams)/Weight of sample taken (grams)] x 100%
Anti-microbial assay.Anti-microbial susceptibility testing was done using the well
diffusion method to detect the presence of anti-bacterial and anti-fungal activities
of the plant samples. Nutrient agar for microbial cultures were prepared according
to the manufacturer’s instructions.
Anti-microbial assays were conducted using the agar diffusion method with
modification (Donaldson et al. 2005). The microorganisms used in this study were
Streptococcus sobrinus, S. mutans, Staphylococcus aureus, and Candida albicans.
All materials were sterilized by autoclaving at 15 lbs per square inch pressure
(121ºC) for 15 min. Microbes were inoculated in nutrient agar (NA). Approximately
5 ml of sterile media was poured into 5 cm-diameter petri dishes. After the media
solidified, 25 µl of microbial suspension was inoculated using a sterile swab and
was spread over the surface of the media three times. Next, 6 mm-diameter wells
were bored into the solidified media using sterile cork borer. Serial dilutions of S.
borneensis essential oil were prepared with 40% ethanol. The cr ude essential oils
were diluted to serial dilutions at the following concentration 1, 1/10, and 1/100
(v/v). Twenty microliters of each essential oil concentration were added into the
wells. Chlorhexidine (10 µg per well), a standard synthetic antibiotic, was used as
a positive control, and 40% ethanol was used as a negative control. All plates were
incubated at 37˚C for 24-48 hours. After incubation, the petri dishes were observed
for formation of a clear inhibition zone around the well, indicating the presence
of anti-bacterial activity. The zone of inhibition was calculated by measuring
the diameter of the inhibition zone around the well. All tests were performed in
duplicates. AI was calculated using the formula adopted from Arya et al. (2010):
AI = Inhibition zone of sample/Inhibition zone of standard
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Asia Life Sciences 27(2) 2018
Anti-oxidant assay.The anti-oxidant activity of the essential oil was determined by
the DPPH radical scavenging method (Bachrouch et al. 2015) with modification.
Five hundred microlitres of the sample in methanol solution weres added to
500 mL of a methanolic DPPH solution with final concentration at 25, 50, 100, 250,
500, 1,000 µg/mL. Ascorbic acid was used as a positive control. The measurement
of absorbance was made against a blank prepared for each concentration at
517 n m using a Shimadz u UV-VIS 1200 spectrophotometer (Shimadzu Cor p., Kyoto,
Jap an). The anti-radical activity (three replicates per treatment) was expressed as
IC50 (mg/mL), the concentration required to cause a 50% DPPH inhibition. The
ability to scavenge the DPPH radical was calculated using the following equation:
SA% = [(Acontrol – Asample)/Acontrol] ×100
where: Aco ntrol is the absorbance of the control reaction (containing all reagents
except the test compound); Asample is the absorbance of the test samples. Samples
were analyzed in triplicates.
Gas chromatography-mass spectrometry (GC/MS) analysis. The essential oil was
analyzed by GC-MS (Shimadzu-QP-5050A) with the following setting: column -
HP-5 MS, 60 m x 250 µm ID x 0.25μm film thickness; temperature program - from
70 to 290°C (40 minutes) at 15°C.minute-1, and injection temperature - 290°C. The
injection port temperature was 290°C, and the detector temperature was 250°C.
The injection mode was split (50:1), and the inlet pressure was 18.03 psi. The carrier
gas was helium with a flow rate of 1 ml.minute-1. The mass spectrometer conditions
were as follows: ionization voltage: 70 eV; MS source temperature at 250°C; MS
quadruple temperature at 150°C; interface temperature at 290°C and electron
ionization mass spectra were acquired over the mass range of 40-800 m/z.
Statistical data analysis. The experimental results were expressed as mean
± standard deviation (SD) of three replicates. Regression analysis with polynomial
model of dose-response curve plotting between different concentration and percent
inhibition were used to obtained the IC50 value. Microsoft Excel 2010 statistical
package was used for all analyses.
RESULTS
Essential oil from the leaves of S. borneensis was clear and yellowish. The
results of the yield and refractive index were 0.39% and 1.435, respectively. The
GC-MS chromatogram of the essential oil of S. borneensis showed 6 peaks,
indicating the presence of six compounds (Table 1). The chemical compounds were
identified by comparing their retention time, molecular formula, molecular weight
and area (Table 1).
The most abundant compounds identified in the essential oils were
2,4,6-trithiaheptane-2,2-dioxide, methyl (methylsulfinyl) methyl sulfide, and
1,5-heptadien-3-yne (Figure 1). GC-MS analysis revealed that the essential oil of
S. borneensis is mainly composed of sulfur-containing compounds. Most
components in the essential oil of S. borneensis leaves were sulfur-containing
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Asia Life Sciences 27(2) 2018
compounds, and 35.99 and 47.5% of these compounds consisted of sulfides with
two and three sulfur atoms, respectively.
Table 1. Chemical constituents of the essential oil of Scorodocarpus borneensis by
GC-MS.
No. Retention
Time (min) Compound names*Molecular
Formulas
Molecular
Weights
Area
(%)
1 6.45 Trisulde, dimethyl C2H6S3126.26 4.15
2 9.18 Methyl (methylsulnyl)
methyl sulde C3H8OS2124.22 34.03
3 14.56 1,5-Heptadien-3-yne C7H892.14 10.50
4 18.51 2,4,6-trithiaheptane-2,2-
dioxide C4H10S3154.32 43.35
5 24.15
Furan, tetrahydro-2,2-
dimethyl-5-(1-methyl-1-
propenyl)
C10H18O 154.25 6.01
6 27.09 Methane, (methylsulnyl)
(methylthio) C3H8OS2124.225 1.96
*Compounds were identied using the NIST, Wiley Mass Spectr al Library and the mass spectroscopy
data analysis.
Figure 1. Major compounds identied in the essential oil of Scorodocarpus
borneensis: (a) Methyl (methylsulnyl) methyl sulde; (b) 2,4,6-trithiaheptane,
and (c) 1,5-Heptadien-3-yne.
In this study, four microbes were investigated in susceptibility tests with
different concentrations of the essential oil. The essential oil showed better activity
than the commercial antibiotics, chlorhexidine and chloramphenicol (Table 2). The
essential oil was found to be highly effective at inhibiting the growth of all tested
microbes.
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Asia Life Sciences 27(2) 2018
Table 2. Anti-microbial activity of essential oil of Scorodocarpus borneensis
against four microbes.
Sample
concentration
Diameter of inhibition (mm)
Streptococcus
sobrinus
Streptococcus
mutans
Candida
albicans
Staphylococcus
aureus
CHX* 20.70±0.00 21.00±0.00 17.70±0.00 17.00±0.00
CMP* 28.70±0.00 31.30±0.00 17.30±0.00 23.30±0.00
1 51.57±0.94 53.67±0.94 52.67±0.47 52.89±0.51
1/10 50.33±0.00 51.67±0.47 51.33±0.47 51.78±1.01
1/100 18.00±0.94 18.50±0.24 18.17±0.71 15.67±0.58
Remarks : CHX= Chlorhexidine, CMP= Chloramphenicol, * at concentration (10 mg)
Estimation of the potential antimicrobial can be measured quantitatively. It
can be measured by the activity index (AI) values by comparing the inhibition zone
of sample to inhibition zone of respective standards. The AI against chlorhexidine
showed that the essential oil of S. borneensis exhibited the strongest bactericidal
activity at a concentration of 1 (crude essential oil, v/v) against S. aureus. The AI
decreased in the following order: S. aureus > C. albicans > S. mutans > S. sobrinus
(Figure 2a). Furthermore, the AI against chloramphenicol showed that the essential
oil of S. borneensis exhibited the strongest bactericidal activity on crude essential
oil (concentration 1, v/v) against C. albicans. The activity index of essential oil
against chloramphenicol decreased in the following order: C. albicans > S. aureus>
S. sobrinus > S. mutans (Figure 2b). Based on the activity index, the essential oil
had the best activity index of 3.11 in S. aureus.
Figure 2. Compar ison of essential oil and antibiotics activit y index: (a) Chlorhexidine
and (b) Chloramphenicol.
The essential oil of S. borneensis showed a dose-dependent inhibitory effect
against radical scavenging DPPH with an IC50 value of 715.97 µg/mL. The essential
oil did not have good radical scavenging compared to ascorbic acid (Table 3).
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Bioactivity of essential oil from leaves of Scorodocarpus borneensis
Asia Life Sciences 27(2) 2018
Table 3. Anti-oxidant activity of essential oil of Scorodocarpus borneensis.
No. Samples
Percentages of Anti-oxidant Activity
(%) IC50
(µg/
mL)
1000
µg/
mL
500
µg/
mL
250
µg/
mL
100
µg/
mL
50
µg/
mL
25
µg/
mL
1 Ascorbic acid*- - - 97.01 96.81 97.1 -
2S. borneensis 54.52 37.18 36.34 7.63 4.15 3.28 715.97
*There were no tests for concentrations of 250-1,000 µg/mL.
DISCUSSION
Steam distillation appears to be a good method for extracting the essential oil
from leaves of S. borneensis as it results in good yield and is a simple technique.
The advantage of this technique is the favored material distills at a temperature
below 10 0oC. Therefore, the decomposition may be prevented if an unstable or
excessively boiling essential ingredient is removed from the mixture. Because all
gases mix, the two materials can be mixed in the evaporation and co-distil. Once
the distillate is cooled, the desired components which are miscible, are separated
from the water (Pavia 2011). In this study, we report the presence of a methyl
(methylsulfinyl) methyl sulfide and 2,4,6-trithiaheptane-2,2-dioxide in the essential
oil of S. borneensis leaves. Similar results have been obtained, but these compounds
were found in another part of S. borneensis plant. Methyl (methylsulfinyl) methyl
sulfide was the main component in the fruits of S. borneensis. This compound has
natural preservative properties (Kubota & Kobayashi 1994). 2,4,6-Trithiaheptane-
2,2-dioxide was previously isolated from the fruits of S. borneensis. Trisulfide,
dimethyl or DMTS is a sulfur-based molecule found in garlic, onion, broccoli
and similar plants, and it has been reported to act as a sulfur donor-type cyanide
counter measure and key mediator of pollinator attraction in brood-site deceptive
plants (Rockwood et al. 2 016 , Zit o et al. 2014). 1,5-Heptadien-3-yne were fatty acid
compounds that are also found in the flower fragrance of Cypripedium tibeticum
(Li et al. 2006). Furan, tetrahydro-2,2-dimethyl-5-(1-methyl-1-propenyl) has a citrus
odor and categorized as a f lavoring agent (Burdock 2010). Methane, (methylsulfinyl)
(methylthio) is also found in the essential oil of Allium atroviolaceum and Sonchus
arvensis leaves (Lorigooini et al. 2 014).
Scorodocarpus borneensis leaf oil has strong activity against all microbial
tested in this study and this result agreed with Kuspradini et al. (2016) that screened
the anti-microbial activity of several essential oils. It has been reported that the
crude oil of S. borneensis leaves had anti-microbial activity against S. aureus and
C. albicans with no comparisons of different concentrations. Compared to results
from the previous study, the inhibition activity of S. borneensis essential oil against
S. aureus is stronger in this study. This difference in activity is probably due to
variations in the essential oil composition at different sample collection times. The
biological and pharmacological activities of essential oils rely upon the species,
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Kuspradini et al. 2018
Asia Life Sciences 27(2) 2018
ecological factors and e nviron mental conditions (La hlou 2004). Based on the activity
index (AI), the essent ial oil had good potency as an ant i-microbial agent. The ranges of
AI were 0.59-1.05, 1.65-3.04, 1.79-3.11 at d ifferent diluted concentr ation of 1, 1/10 and
1/100, respectively. Activity index of positive controls/antibiotics was 1. The AI
value of more than 1 indicated the considerable role of sample. Interestingly, high
activity indexes (AI > 1) were observed at essential oil concentration of 1/10 and
1. According to Hosamath (2011) and Awan et al. (2013), the activity index of the
test substance above 0.5 was considered as significant activity and the more AI
values evaluated the more significant the results. The anti-microbial activity of a
given essential oil may depend on only one or two of the oil’s major constituents.
However, increasing evidence indicates that the inherent activity of essential oils
may rely on not only the ratio of the main active constituents but also the interactions
between them and the oil’s minor constituents (Singh et al. 2014). In this study,
most components of the essential oil of S. borneensis leaves were sulfur-containing
compounds, with 93.49% consisting of sulfides with two or three sulfur atoms.
Researchers have demonstrated that sulfur-containing compounds may be useful as
anti-microbials (Naganawa et al. 1996, Lim et al. 1998, Kim et al. 2006). According
to earlier studies (e.g. Kim et al. 2004), sulfides, especially those with three or
more sulfur atoms, apparently possess potent anti-microbial activity. It has been
suggested that the strong anti-microbial activity of S. borneensis leaf oil is due to
the availability of its major constituent with three sulfur atoms: 2,4,6-trithiaheptane-
2,2-dioxide.
The half maximal inhibitory concentration 50 (IC50) were used to determine
anti-oxidant capacity of sample compared to standard. Samples that had IC50 values
lower than 50 µg/ml were very strong anti-oxidant, 50-100 µg/ mL were strong
anti-oxidant, 101-150 µg/mL were medium anti-oxidant, while weak antioxidant
with IC50 higher than 150 µg/ mL (Blois 1958). Based on this, the essential oil of
S. borneensis could be classified as weak anti-oxidant with an IC50 of more than 150
µg/ mL. Researchers have demonstrated that sulfur-containing compounds may
be useful as anti-oxidants (Dansette et al. 1990, Pappa et al. 2007). But, in many
essential oils due to the absence of phenols, most of them exhibit no or low anti-
oxidant activities (Sharopov et al. 2015). It can be assumed that the anti-oxidant
activity of the tested essential oils as nonpolar extracts could be linked to their
phenolic concentration. However, it is important to realize that in certain cases, anti-
oxidants can be pro-oxidant and can stimulate free radical reactions. The methods
of expressing anti-oxidant activity appear to be as varied as the methods of anti-
oxidant measurement. The measurement of anti-oxidant activities, especially for
anti-oxidants that are mixtures, multi-functional or acting in complex multi-phase
systems, cannot be evaluated satisfactorily by a simple anti-oxidant test without
considering the many variables influencing the results (Antolovich et al. 20 02).
CONCLUSION
In this study, the leaves of S. boornensis can produce the essential oil with
the strong anti-microbial activities against oral pathogens. To the best of our
knowledge, no reports on the chemical compounds of essential oil from the leaves
351
Bioactivity of essential oil from leaves of Scorodocarpus borneensis
Asia Life Sciences 27(2) 2018
of S. borneensis have been published so far. This is the first report that discusses the
essential oil isolated from S. borneensis leaves, its anti-microbial, anti-oxidant and
its chemical composition. The most components of the essential oil of S. borneensis
leaves were sulfur-containing compounds, with 93.49% consisting of sulfides with
two and/or three sulfur atoms. Therefore, this property could be used to develop new
anti-microbial ingredients from S. borneensis leaf oil for oral or personal products.
ACKNOWLEDGMENTS
The authors gratefully acknowledge the generous assistance of the Members of the
Laborator y of Forest Products Chemist ry, Faculty of Forestr y, Mulawarman University, East
Kalimantan, Indonesia. This work was supported by the Ministry of Research, Technology
and Higher Education of the Republic of Indonesia (Grant Number: 347/UN17.41/KL/2017).
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ASIA LIFE SCIENCES
The Asian International Journal of Life Sciences
ISSN 0117-3375
Volume 27 Number 2 July-December 2018
CONTENT
343 Chemical composition and bioactivity of
essential oil from the leaves of Scorodocarpus
borneensis Becc. (Olacaceae) grown in Indonesia
HARLINDA KUSPRADINI1*, SAAT EGRA1,
INDAH WULANDARI1 and AGMI SINTA PUTRI1
1Faculty of Forestry, Mulawarman University,
Jl. Ki Hajar Dewantara, Gunung Kelua, Samarinda,
East Kalimantan, Indonesia
*Corresponding author: e-mail - hkuspradini@fahutan.unmul.
ac.id
©Rushing Water Publishers Ltd. 2018 Printed in the Philippines
... skin infection as well as ringworm [25]. Essential oil of leaves (yield 0.3%; 20 µL/5 mm well) in 6 mm agar wells of inhibited the growth of S. sobrinus, S. nutans, C. albicans, S. aureus, and S.typhi [51,52]. A dichloromethane extract of leaves inhibited the replication of the Hepatitis B virus [53]. ...
... The methanol extract from leaves, bark, and seeds [24], ethyl acetate extract of bark [33], the ethanol extract of seeds [55], and the n-hexane extracts of seeds scavenged DPPH free radicals [34]. The essential oil of leaves displayed meek radical-scavenging activities [52,53] (Table 2). The anti-free radical activities of organosulfur compounds in this plant need to be examined. ...
Article
Full-text available
Scorodocarpus borneensis (Baill.) Becc. is attracting increased attention as a potential commercial medicinal plant product in Southeast Asia. This review summarizes the current knowledge on the taxonomy, habitat, distribution, medicinal uses, natural products, pharmacology, toxicology, and potential utilization of S. borneesis in the pharmaceutical/nutraceutical/functional cosmetic industries. All data in this review were compiled from Google Scholar, PubMed, Science Direct, Web of Science, ChemSpider, PubChem, and a library search from 1866 to 2022. A total of 33 natural products have been identified, of which 11 were organosulfur compounds. The main organosulfur compound in the seeds is bis-(methylthiomethyl)disulfide, which inhibited the growth of a broad spectrum of bacteria and fungi, T-lymphoblastic leukemia cells, as well as platelet aggregation. Organic extracts evoked anti-microbial, cytotoxic, anti-free radical, and termiticidal effects. S. borneensis and its natural products have important and potentially patentable pharmacological properties. In particular, the seeds have the potential to be used as a source of food preservatives, antiseptics, or termiticides. However, there is a need to establish acute and chronic toxicity, to examine in vivo pharmacological effects and to perform clinical studies.
... Ibrahim (2014) menuliskan bahwa ekstrak n-heksana daun ketepeng dapat menghambat pertumbuhan bakteri Staphyloccocus aureus dan bakteri Escherichia coli yang terdapat pada usus manusia, pada konsentrasi 25% dengan diameter daerah hambat masing-masing sebesar 18 mm dan 15,6 mm. Kuspradini et al. (2018) melaporkan minyak atsiri dari daun Scorodocarpus borneensis Becc (Olacaceae) yang tumbuh di Indonesia mampu menghambat pertumbuhan S. sobrinus, S. mutans, S. aureus dan C. albicans. ...
Article
Full-text available
Ketepeng (Cassia alata L.) was a group of plants included in the Magnoliophyta division which can be found in tropical or subtropical areas. The purpose of this study was to determine the potential of Ketepeng leaves to inhibit the growth of R. solanacearum and S. sobrinus bacteria. The method used in this study is agar well diffusion with 3 replications. The sample used was Ketepeng leaf extract with several concentrations of 0.5%, 1%, 2%. Positive controls in this study were Chloramphenicol and negative control of 40% ethanol. The variables calculated are the calculation of water content, percentage of yield and percentage of area diameter barriers (DDH). In addition, the DDH results show the ethanol extract of Ketepeng leaves at concentrations of 0.5% and 1% not able to inhibit the growth of R. solanacearum, but at a concentration of 2% able to inhibit R.solanacearum with a diameter of 11,7 mm and the ethanol extract of Ketepeng leaves at concentrations was able to inhibit the growth of S. sobrinus bacteria with the highest diameter of 16 mm at a concentration of 2%.
... The EOs rich in phenolic compounds such as carvacrol, oxygenated derivatives (thymol methyl ether) and its precursors p-cymene and c-terpinene were reported in all investigated cultivars and have described to possess high levels of antimicrobial activity (Memar et al. 2017). Moreover, studies reported that oxygenated terpenoids such as phenolic terpenes and alcoholic isolated and confirmed in this study have been approved to have marked antimicrobial activity than the other components due to their highly lipophilic nature and low molecular weight that induce it capable of disrupting the cell membrane, causing inhibiting the microbial and cell death (Kuspradini et al. 2018). Therefore, several in vitro tests indicate that terpenes or terpenoids show ineffective antimicrobial activity when used individually compared to in mixture with other components of EOs (Xue et al. 2013). ...
... The EOs rich in phenolic compounds such as carvacrol, oxygenated derivatives (thymol methyl ether) and its precursors p-cymene and c-terpinene were reported in all investigated cultivars and have described to possess high levels of antimicrobial activity (Memar et al. 2017). Moreover, studies reported that oxygenated terpenoids such as phenolic terpenes and alcoholic isolated and confirmed in this study have been approved to have marked antimicrobial activity than the other components due to their highly lipophilic nature and low molecular weight that induce it capable of disrupting the cell membrane, causing inhibiting the microbial and cell death (Kuspradini et al. 2018). Therefore, several in vitro tests indicate that terpenes or terpenoids show ineffective antimicrobial activity when used individually compared to in mixture with other components of EOs (Xue et al. 2013). ...
Article
The sterols, hydrocarbons and fatty acids constituents of the leaves of five mango cultivars locally implanted in Egypt were identified. The effect of their essential oils (EOs) against food borne microorganisms was studied as preservative materials. The chemical constituents of the EOs isolated from mango leaves were identified by Gas Chromatography–Mass spectrometry (GC–MS) technique. Trans-caryophyllene, α–humulene and α–elemene were identified as terpene hydrocarbons, while 4-hydroxy-4-methyl-2-pentanone as oxygenated compounds were recorded in all tested cultivars with variable amounts. Results showed that Staphylococcus aureus and Escherichia coli were the most sensitive microorganisms tested for Alphonso EOs. On the other hand, Salmonella typhimrium was found to be less susceptible to the EOs of the studied cultivars. The EOs of different mango cultivars induced a steady decrease in the activity of amylase, protease and lipase at the minimum inhibitory concentration (MIC). The treatment of the tested bacteria with the EOs of mango cultivars caused a steady loss in enterotoxins even when applied at the sub-MIC. Bacteria-inoculated apple juice treated with minimum bactericidal concentration of Alphonso oil was free from the bacteria after 5 days of incubation at 25 °C. Eighteeen volatile compounds were found to reduce the activity of the amylase enzyme and the most active was cedrelanol (−7.6 kcal mol−1) followed by alpha-eudesmol (−7.3 kcal mol−1) and humulene oxide (−7 kcal mol−1). The binding mode of both of cedrelanol and alpha-eudesmol with amylase enzyme was illustrated.
... In East Kalimantan, kulim is known as "forest onion" and is used as a substitute for the aroma of garlic (seeds and bark), as well as vegetables (leaves), traditional medicines (roots and leaves) and ritual ceremonies (bark and fruit) [2]. The essential oil is obtained from its leaves by steam distillation and it is a new natural anti-microbial agent for oral pathogens [4]. Kulim population is currently being threatened due to its extensive exploitation while its regeneration process is very slow (annual increments of 0.2-0.3 ...
Article
Full-text available
Kulim (Scorodocarpus borneensis Becc.) is one of Indonesian wood species with high economic value. Kulim wood is widely used for house construction, bridges and shipbuilding, while its fruit is used for cooking for its garlicy fragrance. Unfortunately, this species is currently rare in the wild due to habitat disturbance. Re-planting efforts require good quality seeds which can be collected from designated seed sources. The aim of this study was to identify the potential of Kulim stand in the arboretum of PT. Arara Abadi, Riau which covers 26.2 ha. Data collected from the site include tree height, diameter, geographic position as well as stand conditions. Total of 152 individual trees (121 trees, 23 poles, 5 saplings and 2 seedlings) were found in the area of study. The area is accessible, relatively safe from interference and well managed. The quality of the stands is quite good with no significant attack from pests or diseases. Fruits, seedlings and saplings were also found in the forest floor. The stand is therefore appropriate to be designated as Identified Seed Stand of Kulim based on the criteria of regulation concerning implementation of forest seeds. This stand can also be reserved as an insitu conservation area of Kulim.
... Ibrahim (2014) menuliskan bahwa ekstrak n-heksana daun ketepeng dapat menghambat pertumbuhan bakteri Staphyloccocus aureus dan bakteri Escherichia coli yang terdapat pada usus manusia, pada konsentrasi 25% dengan diameter daerah hambat masing-masing sebesar 18 mm dan 15,6 mm. Kuspradini et al. (2018) melaporkan minyak atsiri dari daun Scorodocarpus borneensis Becc (Olacaceae) yang tumbuh di Indonesia mampu menghambat pertumbuhan S. sobrinus, S. mutans, S. aureus dan C. albicans. ...
Article
Full-text available
Ketepeng (Cassia alata L.) was a group of plants included in the Magnoliophyta division which can be found in tropical or subtropical areas. The purpose of this study was to determine the potential of Ketepeng leaves to inhibit the growth of R. solanacearum and S. sobrinus bacteria. The method used in this study is agar well diffusion with 3 replications. The sample used was Ketepeng leaf extract with several concentrations of 0.5%, 1%, 2%. Positive controls in this study were Chloramphenicol and negative control of 40% ethanol. The variables calculated are the calculation of water content, percentage of yield and percentage of area diameter barriers (DDH). In addition, the DDH results show the ethanol extract of Ketepeng leaves at concentrations of 0.5% and 1% not able to inhibit the growth of R. solanacearum, but at a concentration of 2% able to inhibit R.solanacearum with a diameter of 11,7 mm and the ethanol extract of Ketepeng leaves at concentrations was able to inhibit the growth of S. sobrinus bacteria with the highest diameter of 16 mm at a concentration of 2%.
Article
Full-text available
This research aimed to examine the bioactivity of essential oils. The essential oils obtained from the leaves of Dryobalanops lanceolata, Cinnamomum burmannii, Cananga odorata, and Scorodocarpus borneensis by steam distillation method. This research used antioxidant and antimicrobial test. The antioxidant activity was assayed by DPPH (1,1-diphenyl-2-picryhydraziyl) and using ascorbic acid as positive control. The antimicrobial properties of the pure essential oils were determined using agar diffusion method. Two different microorganisms were used in this study, that were Staphylococcus aureus and Candida albicans. The zone of inhibition and activity index were measured and compared against a known synthetic standard. The yields of essential oils of D. lanceolata, C. burmannii, C. odorata and S. borneensis obtained in the present study were 0.12%, 1.01%, 0.04%, and 0.39%, respectively. The extracts inhibited all tested microorganism and susceptible against S. aureus . But only C. odorata has no inhibition against C. albicans. D. lanceolata and C. odorata have the largest inhibition zone against S. aureus are 49.3 and 49mm. The best inhibition zone was shown by the S. borneensis (52.7mm) against C. albicans. The essential oils of D. lanceolata and C. burmannii also have potency to inhibit the free radicals at concentration 25 – 100ppm.
Article
Full-text available
Different organic and aqueous extracts of leaves of Cassia occidentalis L (Caesalpiniaceae) were screened for their antimicrobialactivity against seven human pathogenic bacterial and two fungal strains by disk diffusion assay. The pattern of inhibition varied withthe solvent used for extraction and the microorganism tested. Among these extracts, methanol and aqueous extracts showedsignificant antimicrobial activity against most of the tested microbes. The most susceptible microorganism was P. aeruginosa (18mm zone of inhibition in aqueous extract) followed by P. mirabilis (15 mm zone of inhibition in methanol extract) and Candidaalbicans (8 mm zone of inhibition in methanol extract). Preliminary phytochemical analysis of different extracts revealed thepresence of anthraquinones, carbohydrates, glycosides, cardiac glycosides, steroids, flavanoids, saponins, phytosterols, gums andmucilages while alkaloids were absent in all the tested extracts.
Article
Full-text available
This study is based on information obtained through interviews with respondents, observations, collection and identification of medicinal plants in Kampung Orang Asli Lubuk Ulu Legong Baling, Kedah. A total of 39 species from 35 families of medicinal plants used for treating various ailments were recorded. 10.2% of the species were used to treat more than one ailment. The common mode of administration was oral (69.2%) followed by external use (30.8%).The common part of plant used is the root followed by leaves, stem, fruit, whole plant and tuber. Decoction (69.2%) is a common method of preparing herbal medicine followed by pounded (15.4%), mashed (7.7%), burned (2.6%), shredded and incantation (3%). 59% of the species were obtained from the wild, 28.2% were planted and 12.8% species of the species were both wild and planted.
Book
Since publication of the first edition in 1971, Fenaroli's Handbook of Flavor Ingredients has remained the standard reference for flavor ingredients throughout the world. Each subsequent edition has listed more flavor ingredients and allied substances, including those conferred food additive status, substances generally recognized as safe (GRAS) by qualified scientists (including the Flavor and Extract Manufacturers' Association Expert Panel) and those substances having undergone GRAS Notification with the Food and Drug Administration (FDA). New in the Sixth Edition 200+ newly approved flavor ingredients Ingredient's safety standing with the Flavor and Extract Manufacturers' Association and/or the FDA Extensive and expanded information on aroma and taste thresholds Updated regulatory information on each flavor ingredient New discussion on botanical substances that serve as flavoring ingredients The fourth and fifth editions added more than 300 new entries and represented a total reorganization and updating of the text, consistent with new data and regulations. This, the sixth edition, is likewise expanded with over 200 new entries, including many botanicals and other natural substances. The addition of botanicals is a response to an expanded readership with an interest in dietary supplements, in which a number of flavoring botanicals serve a dual role.
Article
In the present studies, the in vitro and in vivo efficacies of a novel cyanide countermeasure, dimethyl trisulfide (DMTS), were evaluated. DMTS is a sulfur-based molecule found in garlic, onion, broccoli, and similar plants. DMTS was studied for effectiveness as a sulfur donor-type cyanide countermeasure. The sulfur donor reactivity of DMTS was determined by measuring the rate of the formation of the cyanide metabolite thiocyanate. In experiments carried out in vitro in the presence of the sulfurtransferase rhodanese (Rh) and at the experimental pH of 7.4, DMTS was observed to convert cyanide to thiocyanate with greater than 40 times higher efficacy than does thiosulfate, the sulfur donor component of the US Food and Drug Administration-approved cyanide countermeasure Nithiodote(®). In the absence of Rh, DMTS was observed to be almost 80 times more efficient than sodium thiosulfate in vitro. The fact that DMTS converts cyanide to thiocyanate more efficiently than does thiosulfate both with and without Rh makes it a promising sulfur donor-type cyanide antidote (scavenger) with reduced enzyme dependence in vitro. The therapeutic cyanide antidotal efficacies for DMTS versus sodium thiosulfate were measured following intramuscular administration in a mouse model and expressed as antidotal potency ratios (APR = LD50 of cyanide with antidote/LD50 of cyanide without antidote). A dose of 100 mg/kg sodium thiosulfate given intramuscularly showed only slight therapeutic protection (APR = 1.1), whereas the antidotal protection from DMTS given intramuscularly at the same dose was substantial (APR = 3.3). Based on these data, DMTS will be studied further as a promising next-generation countermeasure for cyanide intoxication.
Chapter
Psidium cattleianum Afzel. ex Sabine ‘Yellow Strawberry Guava’. See Psidium cattleianum. Lemon Guava, Yellow Strawberry Guava, Yellow Cattley Guava Brazil: Araçá, Araçá-De-Coroa, Araçazeiro (Portuguese);