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Biological attributes of lemon: A review

Authors:
  • Lahore Garrison University

Abstract and Figures

The citrus fruits are originate to be frequently in cultivation throughout the tropics and are extremely nutritious and medicinal in nature. According to Ayurveda, different parts of Lemon tree possess various medicinal properties. Many properties such as anti-infl ammatory, anti-viral, anti-oxidant and anti-diabetic are shown by lemon. In the present review important effects such as anti-fungal, anti-oxidant, anti-infl ammatory, anticancer, antibacterial, anti-ulcer and desorption also have been studied In lemon, very important natural compounds containing ascorbic acid, minerals, citric acid, essential oils and fl avonoids are present in high quantity9. lemon shows anticancer and antibacterial activity due to the presence of alkaloid constituent in different parts of lemon leaves, stem, root and fl ower. Millennium development goals (MDGs) have one of the fundamental goal which is the quest to combat the incidence of diseases such as kidney stone, respiratory disorder, cancer blood sugar balance and cardiovascular diseases. The potential sources of drugs are secondary metabolites due to their therapeutic importance. These secondary metabolites are rich in medicinal plants.
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Citation: Rafique S, Hassan SM, Mughal SS, Hassan SK, Shabbir N (2020) Biological attributes of lemon: A review. J Addict Med Ther Sci 6(1): 030-034.
DOI: https://dx.doi.org/10.17352/2455-3484.000034
https://dx.doi.org/10.17352/jamtsDOI:
2455-3484
ISSN:
MEDICAL GROUP
Introduction
In advanced and undeveloped countries, due to no side
effect and natural origin, usually herbal medicines are used.
From medicinal plants, many customary medicines are derived
which can be used. There are 21,000 plants which are used for
medicinal purposes all around the world are listed by World
Health Organization (WHO). According to the World Health
Organization (WHO), the best sources to acquire the diversity
of drugs are medicinal plants. The largest manufacturer of
medicinal plants is India which is also called botanical garden
of world [1]. In family Rutaceae, the genus Citrus is greatest
operational herb in traditional medicines. In tropical and
subtropical areas of Asia, the native genus is citrus. The main
winter fruits are the citrus fruits which are used up in the diet of
Mediterranean. The citrus fruits are originate to be frequently in
cultivation throughout the tropics and are extremely nutritious
and medicinal in nature. In Mediterranean region, there are
eight taxa have been traditionally cultivated belonging to the
genus Citrus.
History
(Rutaceae). For citrus lemon, the most common name
is lemon and it is an edible fruit. After orange, lemon is the
third most signi cant specie of citrus fruits which is cultivated
more than 4.4 million ton in each year. At present, the biggest
producer of lemons in the world is Argentina with 1.2 million
tones. In lemon, very important natural compounds containing
ascorbic acid, minerals, citric acid, essential oils and avonoids
are present in high quantity [2]. Lemon shows anticancer
and antibacterial activity due to the presence of alkaloid
constituent in different parts of lemon leaves, stem, root and
ower [3]. There are different varieties of lemon include: Avon,
Berna, Baboon, Bearss, Cameron [4]. Peels of lemon consist of
various phytochemicals, such as glycosides, volatile oils, and
-sitosterol. There are various signi cant activities found in
lemon like polyethoxylated, ascorbic acid, avones, phenolic
compounds which are exceptional in other plants.
In 200A.D, lemon plant was rst introduced in southern
Abstract
The citrus fruits are originate to be frequently in cultivation throughout the tropics and are extremely nutritious and medicinal in nature. According to Ayurveda,
different parts of Lemon tree possess various medicinal properties. Many properties such as anti-in ammatory, anti-viral, anti-oxidant and anti-diabetic are shown by
lemon. In the present review important effects such as anti-fungal, anti-oxidant, anti-in ammatory, anticancer, antibacterial, anti-ulcer and desorption also have been
studied In lemon, very important natural compounds containing ascorbic acid, minerals, citric acid, essential oils and avonoids are present in high quantity9. lemon
shows anticancer and antibacterial activity due to the presence of alkaloid constituent in different parts of lemon leaves, stem, root and ower. Millennium development
goals (MDGs) have one of the fundamental goal which is the quest to combat the incidence of diseases such as kidney stone, respiratory disorder, cancer blood sugar
balance and cardiovascular diseases. The potential sources of drugs are secondary metabolites due to their therapeutic importance. These secondary metabolites are
rich in medicinal plants.
Review Article
Biological attributes of lemon:
A review
Sania Ra que
1
, Syeda Mona Hassan
1
*, Shahzad Sharif
Mughal
1
, Syed Khurram Hassan
2
, Nageena Shabbir
1
,
Sumaira Perveiz
1
, Maryam Mushtaq
1
and Muhammad
Farman
3
1Department of Chemistry, Lahore Garrison University, Lahore, Punjab, Pakistan
2Institute of Quality and Technology Management, University of the Punjab, Lahore, Pakistan
3University of Management and technology Lahore, Pakistan
Received: 05 May, 2020
Accepted: 21 May, 2020
Published: 22 May, 2020
*Corresponding author: Syeda Mona Hassan, Depart-
ment of Chemistry, Lahore Garrison University, Lahore,
Punjab, Pakistan, E-mail:
Keywords: Anti-cancer; Anti-ulcer; Anti-microbial; Anti-
diabetic; Lemon
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https://www.peertechz.com/journals/journal-of-addiction-medicine-and-therapeutic-science
Citation: Rafique S, Hassan SM, Mughal SS, Hassan SK, Shabbir N (2020) Biological attributes of lemon: A review. J Addict Med Ther Sci 6(1): 030-034.
DOI: https://dx.doi.org/10.17352/2455-3484.000034
Italy and then taken to Iraq and Egypt in 700 A.D. Lemon was
distributed in the Mediterranean Region by 1000-1150A.D and
then cultivated in China approximately 760-1297 A.D. Lemon
was brought into Spanish and then to Island in Hispaniola in
1493. Lemon was launched in California in 1751 -1786 [5].
Graphical distribution
It is native in north Indian but cultivated in Turkey,
Mexico, United States, Argentina, Iran, Brazil, Italy, Spain
and People Republic of China. The fruit of lemon can be used
for non-culinary and culinary purposes all over the world.
Predominantly, lemon is used for its juice from side to side the
pulp and taste is as well used mostly in baking and cooking [6].
Toxicological Classi cation:
Kingdom: Plantae
Subkingdom: Angiosperms
Phylum: Eudicots
Class: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Citrus
Species: C. Limon
Botanical description
Citrus trees produce fruits of different shapes and sizes
(from round to oblong), these trees are evergreen and full of
avor, fragrance, and juice [7]. The color of leaves of lemon is
dark green; these are 6.5 to 10mm and are arranged on stem
in alternate manners. There are ve petals in lemon with
white fragrant color. The pulp of lemon is highly acidic and its
ower is bisexual and male. ‘Pink Lemonade’ is lemon cultivar
from which the ower of lemon originates. The fruit of this
cultivaris striped and leaves are variegated. Commonly lemons
are oval in shape with smooth and spongy surface [8]. Lemons
are varied in their shapes and sizes, some are like grape fruits
and some are little bigger in size. Lemons are mostly greenish
yellow in color after gaining its full size it shows bright yellow
color instead of greenish yellow. The small seeds are found
with-in the fruit called oopies [9] Figures 1-3.
Phytochemicals and nutrition’s values
Phytonutrients shows the biological relationship between
plants and human health. Mainly phytonutrients are those
bioactive nutrients which are extracted from plants for the
bene t of mankind. Citrus fruits are rich in phytoconstituents
and lemon is one of them. Citrus fruit is rich of avonoid
glycosides, coumarins and volatile oils [10]. Citrus fruit is rich
in avonoid, glycosides, coumarins, and sitosterol Citrus
fruits constitute only 0.9% of total daily calories and 1.7% of
daily carbohydrate. Polymethoxylated avones have much
importance and are very rare in other plants. Fiber of citrus
fruits contains bioactive compound, such as polyphenols, the
most important being vitamin C (or ascorbic acid) and it cure
the de ciency of vitamin C.
Citrus limonene has been analyzed for their content of
nutrient, carbohydrates, protein, fats, sodium or cholesterol.
The 100g of lemon without peel having the energy value121 kJ
(29 kcal) carbohydrates9.32 g, Fat 0.30 g, zinc, 0.06 mg (1%),
calcium 26 mg (3%) , potassium 138 mg (3%), magnesium, 8
mg (2%), iron – 0.60 mg (5%),phosphorus 16 mg (2%), protein
1.10 g, ribo avin is also known as Vit. B2 0.020 mg (1%),
thiamine also known as vitamin B10.040 mg 3%,pantothenic
acid (B5) – 0.190 mg (4%), ascorbic acid also called vitamin C
53.0 mg (88%)
Vitamin B6–0.080 mg (6%), Niacin (Vit. B3) – 0.100 mg
(1%), folate (Vit. B9), 11 g (3%) (Hashemipour et al., 2016).
A considerable amount of carotenoids and a big quantity of
vitamin C (approximately are able of changing to vitamin A),
ber and folate. A large amount of mono-terpene hydrocarbons
Figure 1: Lemon bud and Flower.
Figure 2: Lemon Fruit.
Figure 3: Lemon tree and Fruit.
032
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Citation: Rafique S, Hassan SM, Mughal SS, Hassan SK, Shabbir N (2020) Biological attributes of lemon: A review. J Addict Med Ther Sci 6(1): 030-034.
DOI: https://dx.doi.org/10.17352/2455-3484.000034
(7095%) is present in citrus oils along with lesser aggregates
of sesquiterpene hydrocarbons and these are responsible for a
characteristic avor [10].
Medicinal uses
Lemon was cure the plague and a syrup known as acridine
citri is prepared from its juice which is used for quenched the
thirst of someone and also fought over at the same time. Honey
is boiled with lemon and used as digests. It is also used for the
removal of pimples and dark spots on face [11].
To kill the intestinal worms, to remove the kidney stone
and gravel, lemon juice was used [12]. It is suggested by the
various reports that, reduction in oxidative stress, prevention
in atherogenic modi cations of LDL cholesterol, improve in
the blood lipid pro le, platelet aggregation and improves
HDL-cholesterol concentrations have been done by drinking
substantial volumes of a mixture of citrus juices. It is studied
that its extract has anti-thyroidal properties, which suggest its
potential to ameliorate hyperthyroidism [11].
Due to their similar phytonutrient contents, all citrus fruits
contain nutritional and therapeutic properties. The main source
of primates’ device vitamin C1 is citrus. Absorption of iron from
small intestine in the body is enhanced by ascorbic acid which
is compulsory for connective metabolism particularly the scar
tissue, teeth and bones. It is essential as an anti-stress and
defender against chills damp and cold. It quenches and scavenge
the free radical created by ultra violet radiation stabilization, It
performances also as antioxidants in the skin [7].
The collagens production is also reliant on vitamin C.
Collagens supports in the advancement and renewal of skin and
ne wrinkles are improved by it. Total number of protein in the
body and its energetic constituent are increased by its extracts
which are responsible for the raise of protein serum such as
d- limonene. Citrus fruits and their peels are found to help
in improving various metabolic and in ammatory disorders
attributing to the abundance in its bioactive compounds [13].
Pharmacological activities
Due to their physiological, medicinal and pharmacological
activities, many Citrus species are recognized which includes
antioxidant, anti-in ammatory, hypoglycemic, anticancer
and antimicrobial activities. Studies have also shown that
the main compound of C. limon essential oil D-limonene—
in concentrations of 0.5% and 1.0%, administered to mice
by inhalation, has a signi cant calming and anxiolytic
effect by activating serotonin and dopamine receptors [14].
In addition, D-limonene has an inhibitory effect on pain
receptors, similar to that of indomethacin and hyoscine. The
pharmacological potential of C. limon is determined by its rich
chemical composition. The most important group of secondary
metabolites in the fruit includes avonoids and also other
compounds, such as phenolic acids, coumarins, carboxylic
acids, amino acids and vitamins. The main compounds of
essential oil are monoterpenoids, especially D-limonene. These
valuable chemical components are the reason for the important
position of C. limon in the food and cosmetics industries.
Another pharmacopoeial raw material obtained from C. limon
is the outer part of the mesocarp—the avedo. A monograph
entitled ‘Citrus limon avedo’ can be found in older editions
of the French Pharmacopoeia, for example, in its 10th edition
from 1998. C. limon also has a positive recommendation in
the European Commission’s Cosmetics Ingredients Database
(CosIng Database) as a valuable plant for cosmetics’ production
[15].
Anticancer
An irregular growth of cells or tissues of body is called
cancer. If abnormal cells divide without control and invade
nearby tissues is called malignant tumor and also known as
malignancy. If the abnormal cell growth does not invade
nearby tissues is called benign tumor or non-cancerous
growth. A number of chemo protective activities and chemicals
are found in plants in which some of these are taking as clinical
experiments.
A novel procedure for cancer therapy is Inhibition of
angiogenesis. The selected plants may be carefully used as
anti-angiogenic therapy and in cancer controlling [14]. Citrus
limonene contain vitamin C, folate, dietary bre and other
bioactive components, such as carotenoids and avonoids,
which are suggested to be responsible for the prevention
of cancer and degenerative disease. Citrus liminoids shows
anticancer property in aqueous extract of fruit , containing
those compounds which shield the cells from damage which is
the cause of cancer [16].
Antioxidant activity
The important sources of antioxidants are citrus juices
and fruits and these antioxidants are ascorbic acid, avonoids
and phenolic compounds [17]. The source of glycosides and
phenolic compounds are citrus peels. The bioactive compounds
are phenolic acids which are responsible for the antioxidant
and many other biological activities [18]. The highest anti-
oxidant activity can be found in citrus fruits. Ascorbic acid
(vitamin C) interpretations for a great proportion in some fruits
can act as antioxidant. Moreover, other phytoconstituents
like carotenoids, avonoids, glutathione, and various enzyme
systems may also contribute to the antioxidant activity [19].
Anti-ulcer activity
The pathophysiology of peptic ulcer dieses involves an
imbalance between offensive (acid, pepsin, and H. pylori) as
well as suspicious aspects [14]. Indian Medicinal plants and
their derivatives have been a valuable source of therapeutic
agents to treat various disorders including Antiulcer diseases.
Fruit aqueous excerpt also shows the antiulcer activity against
gastric ulcer [20].
Anti-diabetic activity
A metabolic disorder is called Diabetes. A system, through
which our body utilizes the digested food energy and growth,
is known as metabolism. The eaten food is converted into a
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Citation: Rafique S, Hassan SM, Mughal SS, Hassan SK, Shabbir N (2020) Biological attributes of lemon: A review. J Addict Med Ther Sci 6(1): 030-034.
DOI: https://dx.doi.org/10.17352/2455-3484.000034
form of blood sugar and the basic component of blood sugar is
called glucose. The main source of fuel for our body is glucose.
In absence of insulin, glucose cannot enter our cells. A class of
organic substance known as polyphenols which is present in
lemon and a high amount in lemon peel [13]. It is investigated
that polyphenols considerably inhibited the fat accumulation,
high blood glucose levels and insulin resistance, development
of hyper lipidemia, weight gain which are different aspects of
obesity. A range of essential oils is present in citrus peel. The
pathogenic bacteria are killed or their growth is inhibited by
suing these essential oils. The lowering of diabetes and anti-
per oxidative effects are possessed by citrus peel due to the
high content of total polyphenols [14].
Antimicrobial activity
The antibacterial activity of the organic acid-rich extract of
fresh red chicory was veri ed against predontopathic bacteria
like actionmycies and streptococcus mutant. Oxalic acid and
succinic acid were recognized from active extract .entire
organic acid with variant level of ef ciency were present to
reducing bio lm generation and adhesion of bacteria to the
cell. The antibacterial activity was analyzed by well diffusion
method. 25 mL of Muller Hinton agar was prepared according
to the standard procedure and poured into the plates and then
it is allowed to get hard. The inoculums suspension are taken as
standard which streaked over the surface of the media by using
sterile cotton pad to make sure the con uent development of
the organism and 5 minutes are allowed to dry the plates. The
different concentrations (50, 75 and 100 g/mL) of the extract
were poured into the wells after drying. A standard (1 g/mL)
which is used called Tetracycline. Finally, the bacteria are
incubated at 37ºC for 24 hours in the inoculated plates [21-24].
Conclusion
One of the most important sources of medicines are
plants. It is well documented from ancient times till date all
over the world, medicinal plants are stimulating the ability
of human health to handle with the unpleasant and dif cult
circumstances. A millennium development goal (MDGs) has
one of the fundamental goal which is the quest to combat the
incidence of diseases such as kidney stone, respiratory disorder,
cancer blood sugar balance and cardiovascular diseases. The
potential sources of drugs are secondary metabolites due to
their therapeutic importance. These secondary metabolites are
rich in medicinal plants. As therapeutic agents, the interest in
the use of plant extracts is increasing. A “citrus fruit” lemon
belongs to family Rutaceae which is used in pharmacological
potential as solution. One of the most popular fruit is lemon
in all over the world. From the literature investigation, it is
stated that a potential source of anti-diabetic, anticancer,
antimicrobial and anti-in ammatory activity is lemon.
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034
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Citation: Rafique S, Hassan SM, Mughal SS, Hassan SK, Shabbir N (2020) Biological attributes of lemon: A review. J Addict Med Ther Sci 6(1): 030-034.
DOI: https://dx.doi.org/10.17352/2455-3484.000034
Copyright: © 2020 Rafique S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use,
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... Fruit contains several secondary metabolites, including flavonoids, phenolic acids, coumarins, carboxylic acids, amino acids, and vitamins. Essential oil mostly consists of monoterpenoids, particularly D-limonene [18]. ...
... If the abnormal cell growth does not invade nearby tissues is called benign tumor or non-cancerous growth. Plants have many compounds and chemoprotective properties, which are being studied clinically [18]. Inhibiting angiogenesis is a revolutionary cancer therapeutic method. ...
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Kidney disease affects a large section of the world’s population, and millions of people die each year because they cannot afford the expensive medical services. Prothrombin, uromodulin, and xanthine dehydrogenase are proteins that are known to cause a variety of kidney problems, including blood clots, kidney stones, hyperuricemia, myositis, and acute renal failure. Hyper secretions of these proteins are known to cause several other diseases including high blood pressure, stroke and various heart diseases etc. Though there are drugs and therapies available for the targeted mutations, there are still many undiscovered compounds that may be effective against different kidney diseases. The current study involves molecular docking approach to investigate the effect of naturally occurring compounds present in Citrus limon (L.) Osbeck against prothrombin, uromodulin, and xanthine dehydrogenase proteins. The virtual screening and docking of the selected compounds (diosmin, eriocitrin, eriodictyol, hesperidin, limocitrin, and vitexin) demonstrated that eriocitrin (G= -8.9, RMSD=0) is effective against prothrombin proteins. Diosmin (G=-11.4, RMSD=0) and eriocitrin (G=11.4, RMSD= 0), on the other hand, was effective against uromodulin protein. Furthermore, vitexin(G= - 41.44, RMSD= 0) was found to be highly effective against xanthin dehydrogenase protein. From this preliminary investigation, it can be concluded that, these ligands can be explored further to establish there for identification of promising medication candidate for various kidney ailments.
... An enormous amount of waste and byproducts are produced annually during the processing of citrus fruits into juices. Citrus peels have a wide range of biological activity, including antiviral, antibacterial, anticancer, antifungal, and antidiabetic properties [34]. The peels can be used in value-added forms and in a number of practical ways to lessen the management of solid waste. ...
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Breast cancer one of the most common global health issues is influenced significantly by estrogen and progesterone signaling, with treatments often centered on endocrine-based regimens that include progesterone and estrogen modulators. Historically, a wide range of illnesses and ailments have been treated with medicinal herbs. The Rutaceae family’s Citrus limon contains a plethora of therapeutically valuable phytoconstituents: sugar, polyphenols, pectin, polysaccharides, and monoterpenes. Citrus peels exhibit a wide range of biological activities like antiviral, antibacterial, antifungal, anticancer, and antidiabetic most valuable ones. The current study was conducted to investigate the anticancer potential of phytoconstituents from Citrus limon against the breast cancer target proteins ERa (estrogen receptor alpha) and PR (progesterone receptor) using the technique of molecular docking after purification of phytochemicals. Drug likeliness was predicted using SwissADME while Molinspiration and PASS servers were used to estimate the bioactivity and anticancer activity of phytochemicals, respectively. Among seven phytoconstituents analyzed, humulene demonstrated the highest binding energy (−13.749 kcal/mol) against the targets of breast cancer. Phytochemicals complied with all ADME criteria and were verified as novel therapeutic agents. Humulene and valencene have the potential to treat breast cancer. Received: 19 July 2024 | Revised: 5 November 2024 | Accepted: 30 January 2025 Conflicts of Interest The authors declare that they have no conflicts of interest to this work. Data Availability Statement The data that support this work are available upon reasonable request to the corresponding author. Author Contribution Statement Asad Nawaz: Methodology, Writing – review & editing. Sadia Falak: Resources, Supervision, Project administration. Muhammad Saqlain: Formal analysis, Writing – review & editing. Mazhar Abbas: Conceptualization, Methodology, Resources, Data curation, Supervision, Project administration. Waqas Haider: Methodology, Software, Investigation, Writing – original draft, Visualization. Maha Gul Zafar: Validation, Writing – original draft, Writing – review & editing. Marium Nadeem: Validation, Writing – review & editing. Ayesha Farooq: Writing – original draft, Writing – review & editing.
... Lemon is the most popular name for this fruit, which can be eaten and it is the second-most significant species of citrus fruit after orange, which is grown over 4.4 million tonnes annually (Makni et al., 2018). Lemon contains significant amounts of highly important natural chemicals such as betaand gamma-sitosterol, ascorbic acid, minerals, citric acid, essential oils, phenolic compounds, polyethoxylated chemicals, and flavonoids (Makni et al., 2018;Rafique et al., 2020). Avon, Berna, Baboon, Bears, and Cameron are a few of the numerous varieties of lemon (Mshelia et al., 2018). ...
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Background: Periodic acid Schiff (PAS) is a widely used histochemical staining technique specifically for the demonstration of carbohydrate molecules in tissues. Citrus limon and Citrus aurantifolia juice are non-toxic juices that are safe for consumption and do not cause any adverse effects when exposed to bodily tissues. Aim: This study demonstrates the oxidative potential of Citrus limon and Citrus aurantifolia juice as a substitute for periodic acid in the conventional PAS staining technique while also evaluating the counterstaining quality of Hibiscus sabdariffa extract. Methodology: Histological sections were obtained from archival blocks retrieved from the histopathology service laboratory of Bowen University Teaching Hospital and stained using the conventional Periodic acid Schiff technique while modification in staining protocol was carried out on subsequent slides that were treated with fresh juice extracts of Citrus limon and Citrus aurantifolia and extracts of Hibiscus sabdariffa obtained from its calyces. While the control tissue sections were stained with the conventional PAS technique, other sections of tissues were independently treated by oxidizing with Citrus limon or Citrus aurantifolia juice respectively and continued with Schiff’s reagent while counterstaining with Harris hematoxylin. The other tissue sections were treated with Citrus limon Schiff and Citrus aurantifolia Schiff technique by first oxidizing with Citrus limon juice / Citrus aurantifolia juice, treated with the Schiff’s reagent and followed by counterstaining with Hibiscus sabdariffa extract. Results: The result showed that the periodic acid Schiff, Citrus limon Schiff and Citrus aurantifolia Schiff-stained liver and kidney sections appear similarly with purple-magenta colour which demonstrates the glycogen and glycoprotein content of the tissues, as well as the blue colouration demonstrating the counterstained nuclei. Conclusion: This study showed that the substitution of the 1% periodic acid with freshly prepared Citrus limon or Citrus aurantifolia juice and counterstaining with the extract of Hibiscus sabdariffa impacted a staining effect similar to the conventional PAS staining protocol thus suggesting it as a possible substitute that is cost-effective and readily available alternative in the demonstration of carbohydrates in histologic tissue.
... Lemon, scientifically known as Citrus limon, provides significant health benefits due to its richness in vitamin C, potassi-um, magnesium, minerals, citric acid, and high levels of flavonoids. Lemons contain 3.7% citric acid and approximately 4050 mg·100 g -1 of Vitamin C (Kieling et al. 2018;Rafique et al. 2020). Lemons have anticancer properties and exhibit antibacterial activities as a result of alkaloids in various parts of the plant, including leaves, stems, roots, and flowers. ...
... Citric acid, malic acid, and lactic acid are the main and most important organic acids found in extracts of fruits, respectively. Lemon (Citrus lemon L.) is one of the medicinal plants that is cultivated mainly for its alkaloid compounds (Rafique et al. 2020). Lemon, with 0.08% oxalic acid, 0.07% tartaric acid, 0.98% malic acid, 1.32% lactic acid, 85.26% citric acid, and 0.91% ascorbic acid, has the highest amount of malic acid and citric acid among the mentioned fruits (Khosravi and Rastakhiz 2015). ...
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Incinerated sewage sludge ash contains significant amounts of phosphorus. This research optimized the phosphorus extraction process using ultrasonic and leaching processes and determined the most suitable process conditions by the Response Surface Methodology (RSM). This was done by evaluating the effect of different parameters such as the lemon juice (10 to 70% v/v), sewage sludge density (0.2 to 4% w/v), ultrasonic power (50 to 200 W), and time (0 to 120 min). Central Composite Design (CCD) defined a reduced cubic model with R² and Adjusted R², 0.947 and 0.904, respectively. In the optimal conditions including sewage sludge density of 1.17% w/v, lemon juice of 55% v/v, ultrasonic power was 87 W, and 34 min the highest phosphorus extraction was received to 94%. In addition, these studies show that leaching process significantly contributes to detoxification, and reuse of sewage sludge. Graphical abstract
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The paper studies the effect of the form of preparation (powder and alcohol solution) and concentrations of auxin class phytohormone - indolyl-3- butyric acid (IBA) on morphometric parameters of root system development in green lemon cuttings at rooting under conditions of fog. The results of the study showed 100% rooting of Meyer lemon (C. meyeri) in all variants, and also revealed the advantage of using rooting powder with a concentration of 0.75% IBA. At rooting of ‘Novogruzinsky’ lemon variety (Citrus limon L.) 100% rooting ability was detected in all variants except for alcohol solution with concentration of 1.0%. According to the indicators of root system development the advantage of rooting powder with IBA concentration 1.0% and alcohol solution with IBA concentration 0.75% was revealed.
... Numerous essential oils included in citrous peel either eradicate or stop the formation of harmful germs. The anti-peroxidative and diabeteslowering properties of citrous peel are partly attributed to its high total polyphenol content [59]. ...
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The current research aimed to provide an overview of the phytochemical configuration, nutritional value, and therapeutic uses of Citrous Limonum (lemon). Its fruit contains a variety of phytochemicals including citric acid, polyphenols, terpenes, limonene, flavonoids, vitamin C, sugar, pectin, citric acid, malic acid, flavonoids, carotenoids, terpineol, fellander, camhenium, citrain, calcium oxalates, and mucilages. Vitamin C is abundant in citrous fruits, as well as macronutrients (dietary fibre and simple sugar) and micronutrients (copper, magnesium, phosphorus, calcium, potassium, pantothenic acid, riboflavin, vit B6 niacin thiamin, and folate). Lemon oil is composed of 70% limonene and 20% monoterpenes, along with significant amounts of aldehydes, such as citral, alcohols (linalool), and esters (coumarin). Lemon peel contains high concentrations of flavonoids, glycosides, coumarins, steroids (beta, gamma, sitosterol), dietary fibers, carbs, and volatile oils, all of which are necessary for good health and appropriate development. However, citrus fruits are low in calories, salts, and cholesterol. They find uses in herbal remedies due to their antioxidant, antifungal, anti-cholesterol, anticancer, antiulcer, antidiabetic, antibacterial, and anti-inflammatory characteristics. It is also important to mention that the excessive use of lemon may also be associated with some risks, such as the lowering of sperm count.
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Citrus is a globally consumed fruit with great popularity, yet systematic analyses of primary metabolites across major varieties remain scarce, with phenolic acids as an auxiliary focus due to their flavor relevance. In this study, the primary metabolites and phenolic acids of five citrus varieties were analyzed via liquid chromatography‒tandem mass spectrometry (LC–MS/MS). The analysis revealed that five different citrus varieties contained 342 primary metabolites and 77 phenolic acids. The PCA clearly distinguished the metabolites of various citrus varieties. Compared with the pomelo group, the lemon group presented the most differentially abundant metabolites, whereas the kumquat and navel orange groups presented the fewest. An examination of metabolic pathways with notable disparities revealed that phenylpropanoid biosynthesis and the biosynthesis of amino acids significantly varied between varieties. This study elucidates primary metabolic networks underlying citrus flavor diversification, with phenolic acids providing secondary modulation insights. Moreover, this study provides a theoretical foundation for enhancing the flavor of citrus fruits.
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Background: Citrus fruits have some antioxidant and antimicrobial properties. The aim of this study was to determine the chemical compounds, antioxidant, and antimicrobial activities of Essential Oil (EO) of lemon (Citrus limon) peel in vitro and in a food model. Methods: The analysis of the lemon peel EO was carried out using gas chromatographymass spectrometry. Total phenolic and flavonoid content was determined using standard protocols. The antioxidant activity of the EO was also evaluated using 2, 2-diphenyl-1- picrylhydrazyl (DPPH) radical scavenging assay. Antimicrobial properties of the EO were assessed against Staphylococcus aureus using the broth microdilution method. Also, barely soup was chosen as food model. Data were analyzed using SPSS Inc. software version 22.0. Results: The total phenol content was 81.82±8.02 mg gallic acid equivalent/g of the EO. Also, the total amount of flavonoids in the EO of lemon peel was 11.72±1.82 mg/g rutin equivalent. Lemon peel EO showed 55.09% inhibition of DPPH, showing significant difference with control group (p < 0.05). The MIC and MBC value of EO against S. aureus was 1.25 and 5%, respectively having significant difference (p < 0.05) with control group. A dose-dependent manner was seen in food model revealed significantly lower (p < 0.05) bacterial number in EO containing barley soup groups than the control one. Conclusion: The EO of lemon peel showed considerable antioxidant and antimicrobial properties both in vitro and barley soup as food model.
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Natural plant extracts contain a variety of phenolic compounds which are assigned various biological activities. Our work aims to make a quantitative and qualitative characterization of the Zest (ZL) and the Flesh (FL) of lemon (Citrus limon) , to valorize the pharmacological uses of lemon, by evaluating in vitro activities (DPPH, free radical scavenging and reducing power). The antibacterial, antifungal, and antiproliferative activities were sought in the ability of Citrus limon extracts to protect DNA and protein. We found that the ZL contains high amounts of phenolics responsible for the important antioxidant properties of the extract. However, the FL is richer in flavonoids than the ZL. The FL extract was also found to be more effective than the ZL in protecting plasmid DNA against the strand breakage induced by hydroxyl radicals. We also concluded that the FL extract exhibited potent antibacterial activity unlike ZL. Analysis by LC/MS-MS identified 6 compounds (Caffeoyl N-Tryptophan, Hydroxycinnamoyl-Oglucoside acid, Vicenin 2, Eriocitrin, Kaempferol-3-O- rutinoside, and Quercetin-3-rutinoside). These preliminary results showed that Citrus limon has antibacterial and antioxidant activity in vitro . It would be interesting to conduct further studies to evaluate the in vivo potential in an animal model.
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Objective: To evaluate the antimicrobial activity of methanolic extract from the peel of the fruit of Citrus Limon (Family-Rutaceae) in conjugation with phytochemical analysis.Methods: The methanolic extract from the peel of the fruit of Citrus Limon (Family-Rutaceae) was separated from fruits, shade dried, powdered and extracted using methanol, analysed for phytochemical constituents using standard methods. The antimicrobial activity of the plant extract was examined against 2 bacterial strains among one is Gram-positive (Staphylococcus aureus) and other is Gram-negative (Escherichia coli) and 1 fungal strains (Candida albicans) using agar well diffusion method.Results: The present investigation shows the phytochemical analysis, antimicrobial activity of the methanolic extract of the fruits peel Citrus limon. Various phytochemical analyses revealed the presence of alkaloids, saponin, flavonoids, carbohydrates, glycosides and citric acids and tannins. The antimicrobial activity of the methanolic extract of the plant showed significant result against all the of the test organisms.Conclusion: The present study concluded that methanolic extract of the peel of Citrus Limon contains the high presence of phytochemicals. The methanolic extract of the plant was found to possess promising antimicrobial activity when compared with the standards.
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Background: Childhood obesity is becoming a global problem and its incidence is increasing. The role of dietary intervention with fruits containing vitamin C and flavonoid to control obesity consequences in childhood has not been yet defined. Lemon (Citrus aurantifolia) peels contain flavonoid, pectin and vitamin C. We aimed to compare the effects of lemon peels and placebo on cardiometabolic risk factors and markers of endothelial function among adolescents with overweight and obesity. Methods: In this triple-masked, randomized controlled trial, 60 overweight/obese adolescents were enrolled in a 4-week trial. Eligible participants were randomly assigned into two groups of equal number receiving daily oral capsules containing lemon powder or placebo. Fasting blood sugar, lipid profile, ICAM-1 and VCAM-1, as well as systolic and diastolic blood pressure were compared between the two groups before and after administration of medication and placebo. Results: Of the total 60 enrolled patients, 30 and 29 patients in the lemon and control groups completed the study, respectively. The results of within-group analysis demonstrated a slight reduction in body mass index, LDL-C and systolic blood pressure in the lemon group, but no between group differences existed in the studied variables. Conclusion: This study revealed that consumption of lemon peel extract has some beneficial effects for childhood obesity; however, no considerable effect was documented on anthropometric measures and biochemical factors. Future studies with longer follow up are highly recommended.
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Context: Citrus limon (L.) Burm.f. (Rutaceace) is a commonly available fruit variety with high medicinal and industrial values. Objective: Lemon peel (LP) extract was studied as a potent preventive and curative agent for experimentally induced hyperoxaluric rats. Materials and methods: Gas chromatography-mass spectrometry (GC-MS) analyses and toxicity study were performed for aqueous methanol LP extract. Twenty-four Wistar rats were segregated into four groups. Group 1: Control; Group 2: Urolithic (ethylene glycol (EG) - 0.75%); Group 3: Preventive study (EG + LP extract administration from 0th to 7th week); Group 4: Curative study (EG + LP extract administration from 4th to 7th week). Animals received LP extract daily by oral administration (100 mg/kg body weight) for 7 weeks. Results and discussion: GC-MS analyses revealed that compound 6 was abundant in the LP extract (32%) followed by compound 1 (∼21%). The LD50 value of LP extract was found to be >5000 mg/kg of body weight. Urolithic rats showed significantly higher urinary calcium and oxalate (4.47 ± 0.44 and 18.86 ± 0.55 mg/24 h, respectively) excretion compared with control and experimental rats. Renal function parameters like urea (84 ± 8.5 and 96.1 ± 3.6 mg/dL), creatinine (1.92 ± 0.27 and 1.52 ± 0.22 mg/dL), and urinary protein (2.03 ± 0.02 and 2.13 ± 0.16 mg/24 h) were also reduced by LP extract (p < 0.001) and corroborated with tissue analyses (SOD, catalase, and MDA levels) and histological studies in normal and experimental animals. Immunohistochemical staining of THP and NF-κB in urolithic animals showed elevated expression than the control, while LP extract suppressed the expression of these proteins. Conclusion: In conclusion, lemon peel is effective in curing kidney stone disease and also can be used to prevent the disease and its recurrence.
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Citrus fruits are the main fruit trees grown throughout the world and are well – appreciated for their refreshing juice and health benefits. Numerous therapeutic properties have been attributed to citrus fruits, like anticancer, antiviral, anti-tumor, anti-inflammatory activities, and effects on capillary fragility as well as an ability to inhabit platelet aggregation. More recently, therapeutic values related to cardiovascular diseases and age related macular degeneration have been reported. These numerous health benefits of citrus fruits are linked to the high amounts of photochemical and bioactive compounds such as flavonoids, carotenoids, vitamins and minerals available in citrus fruits. These phytonutrients may act as antioxidants, stimulate the immune systems; induce protective enzymes in the liver or block the damage of the genetic materials. The phytonutrients and vitamins may be responsible for the antioxidant, anticancer and anti-inflammatory properties of the citrus species. The citrus species have numerous applications in herbal medicine and as fruits in Nigeria. In this review, the protective effects of citrus flavonoids and carotenoids against cancer, tumor growth, cardio diseases and macular degeneration along with various healing benefits and nutritional values of citrus fruits have been discussed.