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Inhibitory Effect of Ginger Extract on Candida albicans


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Problem statement: To investigate the antifungal activity of zingiber offcinale (Ginger) on Candida albicans this study was designed based on laboratory investigations. Approach: Candida albicanse (PTCC 5027, ATCC...) was obtained from Iranian microbial collection and was confirmed by Germ Tube formation test. Ethanolic ginger extract was prepared. The antifungal activity of the extract was determined using Agar dilution and disc diffusion techniques. Data were analyzed by ANOVA test. Results: The results showed that the ethanolic extract was effective on Candida albicans (2 mg mL1) at the concentration of 1:5. Conclusion/Recommendations: The study indicates that ginger extract might be promising in treatment of oral candidiasis.
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American Journal of Applied Sciences 6 (6): 1067-1069, 2009
ISSN 1546-9239
© 2009 Science Publications
Corresponding Author: Zahra Atai, Department of Oral Medicine, Faculty of Dentistry,
Kerman University of Medical Sciences, Kerman, Iran
Inhibitory Effect of Ginger Extract on Candida albicans
Zahra Atai,
Manijeh Atapour and
Maryam Mohseni
Department of Oral Medicine, Faculty of Dentistry,
Kerman University of Medical Sciences, Kerman, Iran
Clinical Laboratory Doctor, Neuroscience Research Center,
Kerman University of Medical Sciences, Kerman, Iran
Dentist, Farhangian Dental Clinic, Khajoo Street, Kerman, Iran
Abstract:Problem statement:The fungal infections could be life-threatening in immunocompromised
patients. Candida albicans is the most frequent fungi in the oral cavity. Approach: The first step for
treatment could be done using topical antifungal agents. Nystatine is a choice for mentioned usage but
there are some problems in its using including: unfavorite taste, frequency of usage, etc. Finding better
replacements is the subject of many studies. Results: This study was carried out to find an alternative
for Nystatine. The study was designed based on laboratory investigations to investigate the antifungal
activity of zingiber offcinale (Ginger) on Candida albicans. Candida albicanse (PTCC 5027,
ATCC10231) was obtained from Iranian microbial collection and was confirmed by Germ Tube
formation test. Ethanolic ginger extract was prepared. The antifungal activity of the extract was
determined using Agar dilution and disc diffusion techniques. Data were analyzed by ANOVA test.
Conclusion/Recommendations:The results showed that the ethanolic extract was effective on
Candida albicans (2 mg mL
) at the concentration of 1:5. The study indicates that ginger extract
might have promise in treatment of oral candidiasis.
Key words: Zingiber officinale, antifungal activity, Candida albicans
The incidence of serious infections caused by
yeast, particularly species of Candida, has increased
dramatically during the past decade. Oral candidiasis,
formerly dismissed as an simple infection occurring in
denture wearers, is now one of the most common
opportunistic infections in immunocompromised
patients such those undergoing chemo therapy, HIV-
infected persons and transplant recipients
There are topical and systemic antifungal agents
that may be indicated to control oral candidiasis, but,
the development of resistance is an emerging trend that
may threaten their clinical effectiveness
. For
millions of people that traditional medicine serves as
the only opportunity for health care, plants are vital
sources. Safety and lower side effects of many herbal
extracts have also suggested them as sources of new
. History of ginger and its
applications are well documented
. It has been in
medical use since ancient times. Ginger is listed in
modern pharmacopoeias and repertories and has a wide
range of confirmed pharmacological properties
More recently studies have shown the antifungal
properties of ginger extract, Gingerol
In this study the antifungal activities of ethanolic
extract of the rhizomes of zingiber officinale on
Candida albicans was investigated.
The fungi used in this study, Candida albicans
(PTCC 5027 and ATCC 10231), was purchased
from Iranian microbial collection (Tehran, Iran).
Candida albicans was cultured and maintained on
subouraud’s dextrose agar medium at 30°C. Inoculums
of yeast like fungi were prepared for disc diffusion
assays. Sterile 705 mm diameter paper discs (3M, USA)
were impregnated with 2 mg (10 µL) ethanolic plant
extract, allowed to air dry and placed face down on the
inoculated agar surface. Nystatin solution 100000U/CC
used as positive control. Discs impregnated with 10 µL
of 1% normal saline and allowed to air dry served as
negative control. Plates were then incubated at 30°C in
dark for 48 h, after which the diameter of the fungal
Am. J. Applied Sci., 6 (6): 1067-1069, 2009
growth inhibition zone was measured. The well
containing the highest dilution of ginger extract that
still showed a zone of inhibition around it was
considered to be MIC
Extracts was prepared by blending approximately
500 g of the preserved plant material in 99%
ethanol (1:3 (W/V) ratio). The mixture was filtered
and the filtrate was retained and the residue was again
stored in fresh ethanol and processed as above. The
filtrates were collected and the solvent was rotary
evaporated at 45°C to near dryness, whereupon the
extract was freeze-dried for 48 h to achieve complete
The process yielded approximately 35-45 g of
dried extract. The dried extract (200 mg) was
reconstituted in 1 mL of 99% ethanol for a final
concentration of 10 mg mL
for antifungal disk assays.
Data were analyzed by ANOVA test.
The ginger extract was effective in inhibiting the
growth of Candida albicanse. The positive control
(Nystatin) produced significantly sized inhibition
zones with Candida albicans, while the negative
control produce no observable zones. The inhibitory
zone was measured with respect to the extract
concentration in 24 and 48 h. This assay showed that
the inhibitory zone was reduced while decreasing the
concentration (Fig. 1).
There was significant difference between the
extract and Nystatin in their inhibition activity in
comparison with Candida albicanse (p<0.01).
Minimum Inhibitory Concentration (MIC) of the ginger
extract was obtained for the concentration at 2 mg mL
(1:5 dilution).
Extract dilution (mg dL)
Inhibitory zone (mm
Ginger 24 h
Ginger 48 h
Nystatin 24 h Nystatin 48 h
Fig. 1: Inhibitory zone in comparison with dilution
Members of the Zingiberaceae family are
important in traditional medicine for the treatment of
many diseases such as inflammation, morning
sickness in pregnancy and many infective diseases.
Significant antifungal activities were evident with
extracts from members of the Zingiberaceae
. This
study showed that the extract of rhizomes of
Z.officinale has pronounced inhibitory activities against
Candida albicans. This result is comparable with other
suggesting that different antifungal
agents are present in the Ginger extract. In the ginger
rhizome there are several components which have
antibacterial and anti fungal effects. The gingerol and
shagelol identified as more active agents
Ginger extract containing Gingerol inhibits the
growth of many bacteria and fungi in vitro and the
activity might be contributed to the preventive effects
of its different agents
Recent studies have focused on the effect of Ginger
on the oral bacteria and fungi. Park et al. showed that
crude extract of the ginger can inhibit the growth of oral
bacteria in vitro
which is in good agreement with our
Antifungal activity of the ginger extract has been
reported before
. Our study focused on the effect of
ginger extract on the oral species of Candida (Albicans)
and showed the significant anticandidal effect the
extract. Although species belonging to the
Zingiberaceae family are generally regarded safe for
human consumption
, further bio-assay guided
analysis and clinical trial studies are required to
approve it as an anti fungal agent for oral species. Our
results suggest the ginger components as promising
candidates for development of antifungal agents for
topical applications.
The researchers would like to thank the Kerman
University of Medical Sciences (vice chancellor for
research) for sponsorship of the field research (Grant
number: 83/53).
Giuliana, G., G. Pizzo, M.E. Milici and R. Giangreco,
1999. In vitro activities of antimicrobial agent
against candida species. J. Surg. Oral Med. Oral
Pathol. Oral Radiol. Oral Endod., 87: 44-49.
Am. J. Applied Sci., 6 (6): 1067-1069, 2009
2. Miller, T.F., J.I. Kelley, M.A. Jabra, L.G. Depaola,
A.A. Baqui and W.A. Falker, 2001. In vitro studies
of the efficacy of antimicrobials against Fungi,
2001. J. Oral Surg. Oral Pathol. Oral Radiol. Oral
Endod., 91: 663-670. DOI:
Vianna, M.E., B.P.F. Gomes, V.B. Berder, A.A. Zaia,
C.R. Feraz and F.J. Souzafilho, 2004. In vitro
evaluation of the antimicrobial activity of
chlorhexidine and sodium hypochlorite. J. Oral
Surg. Oral Pathol. Oral Radiol. Oral Endod.,
97: 79-84. DOI: 10.1016/s1079-2104(03)00360-3
4. Barasch, A., M.M., Safford, M.I. Depakute and
D.H. Fine, 2004. Efficacy of chlorhexidine
gluconate rinse for Treatment and prevention of
oral candidiasis in HIV-infected children: A pilot
study. J. Oral Surg Oral Pathol Oral Radiol Oral Endod.,
97: 204-207. DOI: 10.1016/J.tripleo.2003.09.005
5. DeBoer, H.J., A. Kool, A. Broberg, W.R. Mziray,
I. Hedberg and J.J. Levenfors, 2005. Antifungal
activity of some herbal remedies from Tanzanias. J.
Ethnopharmacol., 96: 461-469. DOI:
6. Alzoreky, N.S. and K. Nakahara, 2003.
Antibacterial activity of extracts from some edible
plants commonly consumed in Asia International.
J. Food Microbiol., 80: 223-230. DOI:
7. Konning, G.H., C. Agyare and B. Ennison, 2004.
Antimicrobial activity of some medicinal plants
from Ghana. J. Phytother., 75: 65-67. DOI:
8. Adel, M. and A. Mahasneh, 1999. Antimicrobial
activity of extracts of herbal used in the traditional
medicine of Jordan. J. Ethnopharmacol.,
64: 271-276. DOI: 10.1016/so378-8741(98)00132-9
9. Mascolo, N., R. Jain and S.C. Jain, 1998.
Ethnopharmacologic investigation of ginger
(Zingiber officinale). J. Ethnopharmacol.,
27: 129-140. DOI: 10.1016/0378-8741(89)90085-8
Akoachere, J.F., R.N. Ndip, E.B. Chenwi, L.M. Ndip,
T.E. Njock and D.N. Anong, 2002. Antibacterial
effect of Zingiber officinale and Garcinia kola on
respiratory tract pathogens. East African Med. J.,
79: 588-592. DOI: 10.1002/ptr.1830
Habsah, M., M. Amran, M.M. Mackeen, N.H. Lajis,
H. Kikuzaki, N.I. Nakatan, A.A. Rahman and
A.M. Hafar, 2000. Screening of Zingiberaceae
extracts for antimicrobial and antioxidant activities.
J. Ethnopharmacol., 72: 403-410. DOI:
12. Gugnani, H.C. and E.C. Ezenwanze, 1985.
Antibacterial activity of extracts of ginger and
African oil bean seed. J. Commun. Dis., 17: 233-236.
13. Ficker, C., M.L. Smith and K. Akpagana, 2003.
Bioassay-guided isolation and identification of
antifungal compounds from ginger. J. Phytother.
Res., 17: 897-903. DOI: 10.1002/ptr.1335
14. Forbes, B.A., D.F. Sahm and A.S. Wessfeld, 1998.
Bailey and Scott’s Diagnosic Microbiology.
10th Edn., Mosby Publishers, pp: 100-102.
15. Bakri, I. and M. Doyglas, 2005. Inhibitory effect of
garlic extract on oral bacteria, Arch. Oral Biol.,
50: 645-651.
DOI: 10.1016/J.archoralbio.2004.12.002
Bliddal, H., A. Rosetzsky, P. Schlichting, M.S. Weidner,
L.A. Andersen, H.H. Ibfelt, K. Christernsen and
O.N. Jensen, 2000. A randomized, placebo
controlled, cross-over study of ginger extracts and
Ibuprofen in osteoarthritis. Osteoarthritis Cartilage,
8: 9-12.
17. Mahady, G.B., S.L. Pendland, G.S. Yun, Z.Z. Lu
and A. Stoia, 2003. Ginger (Zingiber officinale
Roscoe) and the gingerols inhibit the growth of
Cag A+ strains of Helicobacter pylori. J.
Anticancer Res., 23: 3699-3702. www.iiar-
18. Ficker, C.E., M.L. Smith, S. Susiarti, D.J. Leaman,
C. Irawati and J.T. Arnason, 2003. Inhibition of
Human pathogenic fungi by members of
Zingiberaceae. J. Ethnopharmacol., 85: 289-293.
DOI: 10.1016/s0378-8741(03)00009-6
19. Tjendraputra, E., V.H. Tran, D. Liu-Brennan,
B.D. Roufogalis and C.C. Duke, 2002. Effect of
ginger constituents and synthetic analogues on
cyclooxygecase -2enzyme in intact cells. J.
Bioorganic Chem., 29: 153-156. DOI:
20. Ippoushi, K., K. Azuma, H. Ito, H. Horie and
H.M. Higashio, 2003. Gingerol inhibits nitric oxide
synthesis in activated J 774.1 mouse macrophages
and prevents peroxynitrite-induced oxidant and
nittation reactions. J. Life Sci., 73: 3427-3437.
DOI: 10.1016/J.lfs.2003.06.022
21. Endo, K., E. Kanno and Y. Oshima, 1990.
Structures of antifungal diarylheptenones,
gingerenones A, B, C and isogingerenone B,
isolated from the rhiomes of Zingiber officinale. J.
Phytochem., 29: 797-799.
22. Weidner, M.S. and K. Sigwart, 2000. The safety of
a ginger extract in the rat, J. Ethno Pharmacol.,
73: 513-520. DOI: 10.1016/s0378-8741(00)00340-8
23. Park, M., J. Bae and D.S. Lee, 2008. Antibacterial
activity of (10)-Gingerol and (12)-Gingerol
isolated from Ginger Rhizome against periodontal
bacteria. J. Phytother. Res., 22: 1446-1449. DOI:
... Candida albicans was a generally benign microflora in healthy individuals, but in immunocompromised patients, it transforms into an opportunistic pathogen that can cause a potentially fatal widespread infection [1]. A frequent opportunistic disease of the skin and oral cavity caused by a type of Candida is called candidiasis. ...
... The results of table (1) showed that Percentage yield of Alcohol extract for M. spicata was at its proportion (4%), while Percentage yield of Al phenol for M. spicata was at its proportion (1.8%). ...
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The aim from this the study effect Phenol compound isolated from Menthe spicata leaves and Nano – Zinc Oxide on Antimicrobial activity antifungal (Candida albicans ) and antibacterial (staphylococcuse aureas and Escherichia coli) , The Menth spicata plant collection from the city of Karbala in 2/9/ 2022 after cleaning and removing soil. As the seed were washed three times with tap water , extraction by using soxhelet apparatus by using methanol (70%) , through 24 hours of and evaporation by rotary evaporation apparatus 40C° for drying, and isolation phenol from Menthe spicata leaves , E. coli and Sta. aureus and C.albicans were obtained from libraries university of karbala , the antimicrobial test against (S.aureas , E.coli and C.albicans) was detected by disc diffusion methods was carried out using phenol extract at concentrations of 0.5, 1, 2, and 13 mg/ml , while Znonanoparticles was performed 0.2, 0.5, 0.8, and 1 mg/ml concentration . indicate the results the inhibition zone of phenol was 17.5 against C.albicans , 13.76 mm against E .coli, 12.87 mm against S. aureus in concentration (0.5) mg/ml. while concentration 1 mg/ml in C.albicans 18.34 , S. aureus 13.98mm , E.coli 14.98mm , while concentration 2mg/ml in C.albicans 19.21mm , S. aureus 14.98mm , E.coli 16.87 mm , concentration 3 mg/ml in C.albicans 21.65mm S. aureus 16.87 mm , E.coli (17.98) mm. While Znonanoparticles' C.albicans inhibition zone was 18.98, , 19.76 mm against E .coli, 20.76 mm against S. aureus in concentration 0.2 mg/ml, while concentration 0.5 mg/ml in C.albicans 19.32 , S. aureus 21.87mm , E.coli 20.54mm , while concentration 0.8mg/ml in C.albicans 21.87mm , S. aureus 22.87 , E.coli 16.87 mm , concentration 1 mg/ml in C.albicans 22.98mm , S. aureus 24.8 mm and E.coli 23.98 mm. The study's finding is that C.albicans was inhibited by phenol compounds at various doses., while the Znonanoparticles with various doses caused the antibacterial activity to be inhibited (S.aureas , E.coli and C.albicans).
... In their study, the ginger essential oil was produced by the distillation method and C. albicans was isolated from clinical specimens. In a study by Atai et al, [26] the MIC for the ethanolic extract of ginger against C. albicans (ATCC-10231) was measured to be 2000µg/mL. Different MIC values were reported in the literature can be due to differences in the type of medium or fungal strain, type of essential oil or extract, or the extraction method. ...
... The findings of the present study showed that both ginger essential oil and nystatin caused significantly greater reductions in the number of C. albicans colonies than distilled water. But, nystatin was superior to ginger essential oil in decreasing the colony count, which was in agreement with the results of Atai et al, [26] and Uzama et al [28]. The MIC of ginger essential oil was measured to be considerably higher than that of nystatin (1560 vs. 4µg/mL). ...
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Objectives: The present study aimed to evaluate the efficacy of ginger essential oil spray for elimination of Candida albicans (C. albicans) adhering to self-cure acrylic plates. Materials and Methods: In this experimental study, 120 self-cure acrylic discs were contaminated with C. albicans and randomly divided into four main groups: exposure to ginger essential oil, nystatin (positive control), distilled water (negative control), and no exposure. The minimum inhibitory concentration (MIC) of ginger oil and nystatin was determined by the microdilution test. The stability of C. albicans was determined by culturing the samples of treated acrylic plates and comparing the mean number of remaining colonies. Data were analyzed using the Kruskal-Wallis test followed by Dunn test with Bonferroni correction. P
... Polyphenolic chemicals are the main non-volatile pungent elements of oleoresin, and they are responsible for their distinct pharmacological actions (Fu et al., 2019). The previous study showed that the ethanolic extract of ginger has antifungal activity on Candida albicans, which is the most frequent fungi in the oral cavity (Atai et al., 2009;Supreetha et al., 2011). Amid reports of the health advantages of ginger extract, this study was carried out to examine the potential of ginger crude extract as a chemotherapeutic agent for Achlya sp. ...
... This research shows that ginger may be used as an antifungal to treat disease in aquaculture fish, with diseased fish treated with ginger crude extract surviving 100% of the time. Atai et al. (2009) confirmed this finding, while Supreetha et al. (2011) discovered that ginger also functions as an antifungal in their research. Since ginger is natural and organic, it contributes to creating green aquaculture unlikely that the application of inorganic chemotherapeutic agents will harm the environment and humans. ...
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The outbreaks of Achlya sp. have resulted in enormous mortality of cultured fish and remain a critical disease problem, resulting in significant losses in aquaculture productivity. Experimental infection of Nile tilapia (Oreochromis niloticus) juvenile by Achlya sp. was conducted to examine the potential of ginger crude extract as a chemotherapeutic agent. A total of 100 juveniles were immersed in four different concentrations of crude ginger extract at 100 ppm, 500 ppm, 800 ppm and 1000 ppm while 0 ppm as the control treatment. The potential of the extract as a treatment agent in the infected fish was recorded in terms of fish survival rate and changes in physical appearance. The results show that the treated fish immersed in a lower concentration of ginger extract (100 ppm, 500 ppm and 800 ppm) possess a higher survival rate and no Achlya sp. found on the fish skin compared to the non-treated control. The highest concentration of ginger extract at 1000 ppm might be toxic to the fish due to a lower survival rate compared to other treatments. It shows that ginger crude extract potentially acts as a chemotherapeutic agent for fungal infection in tilapia juveniles when used in the appropriate concentration and treatment period.
... With the prevalence of fungal infections and following increase in the use of antifungal drugs, there has been a significant elevation in the resistance of Candida species to antifungal compounds (6). On the other hand, consumption of chemical mouthwash such as nystatin can result in various complications (7,8). Medicinal plants including ginger have recently been used in candidiasis treatment (6,9). ...
... Therefore, this study suggested that the alcoholic extract of ginger can be used as an anti-Candida albicans treatment. Atai et al. (7) investigated the inhibitory effect of ginger extract on Candida ATCC10231 and PTCC 5027 in an experimental study. The results showed ginger extract was effective in limiting the growth of Candida Albicans. ...
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Background and Objective: Candidiasis is one of the most common diseases in the oral cavity. Due to the side effects of chemical mouthwashes, the use of antifungal herbs has increased significantly. Therefore, this study was performed to evaluate the effect of Ginger (Vi-one) mouthwash on the growth of Candida albicans under in vitro conditions. Methods: In this experimental in vitro study, 32 special solid culture media were prepared. 15 special solid culture media containing discs and wells impregnated with ginger mouthwash (Vi-one) and 15 special solid culture media with discs and wells of nystatin extract were prepared. Moreover, two blank sterile cultures with disks and wells containing no mouthwash or extract were prepared. These plates were placed in microaerophilic conditions with the presence of carbon dioxide and were transferred to the incubator at 37°C for 48 hours. After 48 hours, the zone of inhibition was determined using standard methods. Findings: Agar well diffusion method revealed that the zone of inhibition for ginger mouthwash equaled 23.6±0.33mm and for Nystatin equaled 28.2±1.2. The Agar disc diffusion method revealed that the zone of inhibition for ginger mouthwash equaled 18.3±1 and for Nystatin equaled 28.3±0.1 (p<0.0001). Conclusion: Based on the results of this study, it seems that ginger mouthwash (Vi-one) compared to nystatin extract can be effective against the growth of Candida albicans under in vitro conditions.
... It was reported in previous studies that the antifungal effects of herbal extracts against candidal species were found to be less efficient when compared with fluconazole or any other anti-fungal drugs, [38][39][40][41][42]. This was in concordance with the results obtained in the present investigation wherein we found that the effects of garlic, turmeric, amla, honey on all the candidal species studied were less effective compared to efficacy of fluconazole. ...
Background and Purpose: Many innovations are constantly emerging with the advances in modern medicine and also it is occurring in various traditional medicines as they are considered to be safe and economical in current increasing health care financial burden. Due to emerging of MDR (multiple drug resistance) microorganisms and reduce efficacy of Modern medicines researchers and clinicians are required to revisit the traditional and alternative medicines. Material and Method: Extracts of garlic (Allium sativum), turmeric (Curcuma longa), amla (Emblica officinalis) and honey were prepared at concentration of 1mg/mL, 2mg/mL, 3mg/mL and were tested on different cancdidal species like Candida Albicans, Candida tropicalis, Candida glabrata, Original Research Article Siddique et al.; JPRI, 33(45A): 437-447, 2021; Article no.JPRI.73880 438 Candida Parapsilosis and Candida Krusei and on Fluconazole as a positive control. Disc Diffusion Test for antifungal assay was performed. Results: The anti-fungal effect was maximum at 3mg/mL concentration for all the herbal extracts. Zone of inhibition for fluconazole, was highest (35.00 ± 1.73). Among herbal extracts zone of inhibition for garlic was maximum (16.67 ± 0.88), followed by turmeric (12.67 ± 1.20), honey (11.00 ± 0.58), amla (9.33 ± 0.67). Similarly for each dose, comparing the mean zone of inhibition between antifungal groups Tukey test showed significantly (p<0.001) different and lower zone of inhibition in herbal extracts (garlic, turmeric, honey and amla) as compared to fluconazole at all the doses. Conclusion: Among all the extracts garlic showed maximum efficiency. Also, the results obtained for herbal extracts showed that they were less efficient compared to fluconazole which was used as positive control.
... Finding is in accordance with the findings of. [34][35][36][37] It is interesting to note from the results of this study that clinical isolates both Gram positive and Gram negative bacteria were sensitive to the extracts. But the gram positive bacteria showed more sensitivity than gram negative bacteria. ...
... Finding is in accordance with the findings of. [34][35][36][37] It is interesting to note from the results of this study that clinical isolates both Gram positive and Gram negative bacteria were sensitive to the extracts. But the gram positive bacteria showed more sensitivity than gram negative bacteria. ...
... Staphylococcus aureus and Escherichia coli have been shown to be sensitive to ethanolic ginger extract [18][19][20]. Excellent inhibitory properties on the growth of the yeast C. albicans were also detected [21][22][23][24]. Among others, ginger extracts and essential oils also showed potential antimicrobial activity on the growth of some other bacteria, including Bacillus cereus, Listeria monocytogenes, Klebsiella pneumoniae, Bacillus subtilis, Pseudomonas aeruginosa, Pseudomonas stutzeri, Salmonella typhimurium, and fungi, such as Aspergillus niger, Aspergillus flavus, and Penicillium spp. ...
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Proper processing of natural material is crucial to obtain an extract with high content of biologically active components. Dried, grinded ginger roots were extracted by ultrasonic method and supercritical extraction with CO2. The aim of the study was to determine if a mixture of the two types of extracts attained by different methods and solvents exhibits better bioavailability than each extract itself. Therefore, both extracts were analytically evaluated and then mixed in a ratio of 1:1. The supercritical extract (SCG extract) and the mixed extract (mixG extract) had high antioxidant activity (78% and 73%) and total phenols (827 mg/g ext. and 1455 mg/g ext.), which is also consistent with the levels of gingerol (303 mg/g ext. and 271 g/g ext.) and shogaol (111 mg/g ext. and 100 g/g ext.) in the extracts. In comparison to both pure extracts higher levels of total phenols were found in the extract mixG. This could be the reason for the significant inhibition of melanoma cells and antimicrobial potential (against Staphylococcus aureus, Escherichia coli, and Candida albicans). The combination of the extracts resulted in a significant increase in the inhibition of selected microbial and melanoma cells WM-266-4 compared to the control. Cell viability decreased below 60% when mixG extract was applied. Antimicrobial activity has been confirmed.
... It is evident from our results that ginger extracts were found very effective against H. oryzae. Presence of several components particularly gingerol and shagelol in ginger rhizome are considered responsible for their antibacterial and antifungal properties (Chen et al., 2008;Atai et al., 2009;Supreetha et al., 2011). Ginger essential oils are also important constituents of ginger with wide range of antimicrobial properties. ...
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The use of plant extracts is gaining importance in plant disease management as injudicious application of chemical fungicides has led to environmental concerns. There is dire need to explore potential alternatives to minimize the harmful effects of chemical pesticides. Therefore, the present work was designed to investigate the effect of different botanicals viz. ginger (Zingiber officinale), neem (Azadirachta indica), calotropis (Calotropis gigantean), garlic (Allium sativum), and datura (Datura stramonium) against Helminthosporium oryzae, the pathogen of brown spot of rice under lab conditions. Four concentrations (2, 5, 10, and 20 mL L-1) of each extract were used in three replications along with an untreated control. A 5 mm piece of actively growing fungal culture was placed aseptically on the treated and untreated potato dextrose agar (PDA) medium. These Petri plates were incubated at 27 ºC for 15 days. The results revealed significant inhibition of fungal growth due to different extracts over control. Ginger extracts showed 94.11% reduction in mycelial growth followed by 82.13% inhibition produced by the neem extracts. Similarly, the extracts of calotropis, garlic, and datura were found effective over control with 78.86%, 76.25%, and 63.61% inhibition, respectively. These results suggest the antifungal potential of these extracts against H. oryzae. Their use can assist the ecofriendly management of brown spot disease of rice.
... The ethanol extracts and crude flavonoids of Z. officianale rhizome exhibit antibacterial activities against E. coli, Staphylococcus aureus, Shigella fiexneri, Proteus vulgaris, and Pseudomonas aeruginosa. [49] Atai et al. [50] exhibited the antifungal activity of the ethanol extract of Z. officinale two strains of Candida albicans. ...
The aim of this study was to investigate in vitro the antimicrobial activity of 0.2%, 1%, and 2% chlorhexidine gluconate (CHX gel and CHX liquid), against endodontic pathogens and compare the results with the ones achieved by 0.5%, 1%, 2.5%, 4%, and 5.25% sodium hypochlorite (NaOCl). A broth dilution test was performed, and the timing for irrigants to kill microbial cells was recorded and statistically analyzed. Both 2.0% gel and liquid formulations eliminated Staphylococcus aureus and Candida albicans in 15 seconds, whereas the gel formulation killed Enterococcus faecalis in 1 minute. All tested irrigants eliminated Porphyromonas endodontalis, Porphyromonas gingivalis, and Prevotella intermedia in 15 seconds. The timing required for 1.0% and 2.0% CHX liquid to eliminate all microorganisms was the same required for 5.25% NaOCl. The antimicrobial action is related to type, concentration, and presentation form of the irrigants as well as the microbial susceptibility.
Dichloromethane and methanol extracts of 13 Zingiberaceae species from the Alpinia, Costus and Zingiber genera were screened for antimicrobial and antioxidant activities. The antimicrobial activity of most of the extracts was antibacterial with only the methanol extract of Costus discolor showing very potent antifungal activity against only Aspergillus ochraceous (MID, 15.6 microg per disc). All the extracts showed strong antioxidant activity comparable with or higher that of alpha-tocopherol.
Four new diarylheptenones, 1,7-bis(4-hydroxy-3-methoxyphenyl)hept-4-en-3-one (gingerenone A), 7-(3,5-dimethoxy-4-hydroxyphenyl)-1-(4-hydroxy-3-methoxyphenyl) hept-4-en-3-one(gingerenone B), 1-(3,5-dimethoxy-4-hydroxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)hept-4-en-3-one (isogingerenone B) and 1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl)hept-4-en-3-one (gingerenone C) have been isolated from the rhizomes of Zingiber officinale, and their structures established by spectral methods and some chemical transformations. The results indicate the similarity in the metabolic fates of the curcuminoid constituents to those of the arylalkanoids (dehydrogingerdione → gingerol → shogaol) of zingiberaceous plants. Gingerenone A exhibited a moderate anticoccidium activity in vitro and a strong antifungal effect to Pyricularia oryzae.
Alternative medicine is used extensively by patients with chronic pain due to e.g., osteoarthritis. Only few of these drugs have be tested in a controlled setting and the present study was undertaken to examine the effect of ginger extract, one of the most popular herbal medications. Ginger extract was compared to placebo and Ibuprofen in patients with osteoarthritis of the hip or knee in a controlled, double blind, double dummy, cross-over study with a wash-out period of one week followed by three treatment periods in a randomized sequence, each of three weeks duration. Acetaminophen was used as rescue medication throughout the study. The study was conducted in accordance with Good Clinical Practice (European Guideline for GCP). A ranking of efficacy of the three treatment periods: Ibuprofen>ginger extract>placebo was found for visual analogue scale of pain (Friedman test: 24.65, P< 0.00001) and the Lequesne-index (Friedman test: 20.76, P< 0.00005). In the cross-over study, no significant difference between placebo and ginger extract could be demonstrated (Siegel-Castellan test), while explorative tests of differences in the first treatment period showed a better effect of both Ibuprofen and ginger extract than placebo (Chi-square, P< 0.05). There were no serious adverse events reported during the periods with active medications. In the present study a statistically significant effect of ginger extract could only be demonstrated by explorative statistical methods in the first period of treatment before cross-over, while a significant difference was not observed in the study as a whole.
Ginger (Zingiber officinale Roscoe) has been used widely as a food spice and an herbal medicine. In particular, its gingerol-related components have been reported to possess antimicrobial and antifungal properties, as well as several pharmaceutical properties. However, the effective ginger constituents that inhibit the growth of oral bacteria associated with periodontitis in the human oral cavity have not been elucidated. This study revealed that the ethanol and n-hexane extracts of ginger exhibited antibacterial activities against three anaerobic Gram-negative bacteria, Porphyromonas gingivalis ATCC 53978, Porphyromonas endodontalis ATCC 35406 and Prevotella intermedia ATCC 25611, causing periodontal diseases. Thereafter, five ginger constituents were isolated by a preparative high-performance liquid chromatographic method from the active silica-gel column chromatography fractions, elucidated their structures by nuclear magnetic resonance spectroscopy and electrospray ionization mass spectrometry and their antibacterial activity evaluated. In conclusion, two highly alkylated gingerols, [10]-gingerol and [12]-gingerol effectively inhibited the growth of these oral pathogens at a minimum inhibitory concentration (MIC) range of 6-30 microg/mL. These ginger compounds also killed the oral pathogens at a minimum bactericidal concentration (MBC) range of 4-20 microg/mL, but not the other ginger compounds 5-acetoxy-[6]-gingerol, 3,5-diacetoxy-[6]-gingerdiol and galanolactone.
An ethanolic extract of the rhizomes of Zingiber officinale was investigated for anti-inflammatory, analgesic, antipyretic, antimicrobial and hypoglycaemic activities. In rats, the extract reduced carrageenan-induced paw swelling and yeast-induced fever but was ineffective in suppressing the writhing induced by intraperitoneal acetic acid. The extract produced blood glucose lowering in rabbits. The growth of both Gram-positive and Gram-negative bacteria was significantly inhibited. A dose-dependent inhibition of prostaglandin release effect was observed using rat peritoneal leucocytes.
Antimicrobial mouthrinses may represent a valid alternative to topical antifungal agents. However, the action of antimicrobials could be affected by the different ingredients incorporated into mouthrinse products. The purpose of the present study was to investigate the in vitro antifungal and fungicidal activities of antimicrobials alone. A broth macrodilution method was used to determine the minimum inhibitory concentration of 4 antimicrobial agents against Candida species. Minimum fungicidal concentration was also determined. All antimicrobials showed antifungal activity against all tested organisms, but cetylpyridinium chloride received significantly lower minimum inhibitory concentrations (P < .005). Cetylpyridinium chloride also showed a greater fungicidal activity than chlorhexidine digluconate and hexetidine (P< .005), whereas sanguinarine chloride appeared to be less fungicidal against most of the isolates tested. These findings suggest that cetylpyridinium chloride may be used as a topical antifungal agent. Clinical trials are now required to assess its value in the management of oral candidosis.
Petroleum ether, ethanol, butanol, and aqueous crude extracts of the whole aerial parts of nine plants exhibited variable degrees of antimicrobial activity against four bacterial and three fungal species. Methanol and hexane extracts did not show any activity. Compared with standard antibiotics, extracts had low to moderate activity. The activity spectrum is wide against gram-positive and negative bacteria as well as fungi tested. However, the butanol extracts at 4 mg/disc of Ononis spinosa (OS), Bryonia syriaca (BS) had high moderate antifungal activity against Aspergillus flavus, Fusarium moniliforme and Candida albicans relative to miconazole nitrate at 40 microg/disc. Furthermore, higher antibacterial activity was observed though low to moderate compared with streptomycin and very comparable with chloramphenicol. Cyclaman persicum (CP) petroleum ether extracts only exhibited pronounced antibacterial activity.
In three different studies on rats, the effects of a patented standardised ginger extract, EV.EXT 33, on blood glucose, blood coagulation, blood pressure and heart rate were investigated. EV.EXT 33 had no significant effect on blood glucose levels at the doses used. It also had no significant effects on coagulation parameters or on Warfarin-induced changes in blood coagulation, indicating that it did not interact with Warfarin. EV.EXT 33 neither decreases systolic blood pressure nor increases heart rate in the rat. As also seen from the literature, ginger is thus pharmacologically safe regarding the investigated aspects.