ArticlePDF Available

Medicinal Use of Endangered Plant Commiphora wightii

Authors:

Abstract

Commiphora wightii plant commonly also name is guggul. It is belong to family Burseraceae and class magnoliopsida..The guggul plant present in arid and semi arid region. It is distributed in Asia India, Pakistan and Bangladesh. In India it is found in Rajasthan, Gujarat, and Karnataka. Guggul plant is a shrub or small tree reaching maximum height of 3 to 3.5 meter. The guggul plant have lot of medicinal values and their medicine use in Arthritis, Rheumatism, Haemorrhids, Urinary disorder, obesity, skin disease and high cholesterol. The guggul plant seed contains 10% oil contant and this oil in oleo-gum resin. In Rajasthan and Gujarat enlisted the guggul plant in Red Data List of endangered species. Guggul plant is endangered because it slow growing nature and poor seed germination.
1
Variorum Multi-Disciplinary e-Research Journal
Vol.,-04, Issue-I, August 2013
ISSN 976-9714
Medicinal Use of Endangered Plant Commiphora Wightii
Mr. Qureshi Ikram and Chahar Om Prakash: JJT University, Jhunjhunu, Rajashthan
Abstract: - Commiphora wightii plant commonly also name is guggul. It is belong to family
Burseraceae and class magnoliopsida..The guggul plant present in arid and semi arid region. It is
distributed in Asia India, Pakistan and Bangladesh. In India it is found in Rajasthan, Gujarat, and
Karnataka. Guggul plant is a shrub or small tree reaching maximum height of 3 to 3.5 meter. The
guggul plant have lot of medicinal values and their medicine use in Arthritis, Rheumatism,
Haemorrhids, Urinary disorder, obesity, skin disease and high cholesterol. The guggul plant
seed contains 10% oil contant and this oil in oleo-gum resin. In Rajasthan and Gujarat
enlisted the guggul plant in Red Data List of endangered species. Guggul plant is endangered because
it slow growing nature and poor seed germination.
Keywords:-Guggul, Biodiversity and antimicrobial activity.
Introducation:-Guggul plant commonly known as Commiphora wightii. It is belong to family
Burseraceae and Class-magnoliopsida.
Systematic position of Commiphora wightii-
Kingdom-Plantae
Phylum-Tracheophyta
Class-Magnoliopsida
Order-Sapindales
Family-Burseraceae
Genus-Commiphora
Species-Wightii
Species Aothority-(Arnott)Bhandari
Habit and Distribution: - The guggul plant present in arid and semi arid climate and it’s
tolerant of poor soil. The guggul plant mainly distributed in arid area of northern Africa to
central Asia, but it most common in Rocky track of western India and Eastern Himalayas. In
central Asia the guggul plant is distributed in arid areas of India, Bangladesh and Pakistan. In
India it plant found in arid, Rocky tracts of Rajasthan, Gujarat and Karnataka. According to
Ayurveda, there are five type of Guggul namely; Krishnan (black), Peet Varn (Yellow), Neel
(blue), Kapish (light brown) and Rakt (blood red) (Goyal et al,2010). The guggul plant is a
shrub or small tree. It is a slow growing plant and takes 8 to 10 years to reach to a height of 3
to 3.5 mtrs with thin paper bark and branch are thorny. Plant leaves are simple, 1-5 cm. long
0.5 to 2.5 cm. broad. The plant is dimorphic, one having bisexual and male flower and the
other having female flower with staminodes. A third category of plant with only male flowers
has also been reported. The fruits are green berry like drupe size of the fruit 6 to 8 mm in
diameter. Fruit part exposed to sun develop pinkish tinge with four small petals. Fruit remain
on the plant for several months. Seed shows polyembroyonic nature. (Gupta et al, 1996),
(Pareek and Pareek, 2012).
2
Variorum Multi-Disciplinary e-Research Journal
Vol.,-04, Issue-I, August 2013
ISSN 976-9714
Medicinal Uses:-
The use of guggul plant in the treatment of diseases occupies an important place in ayurveda,
the traditional medicine system of india. The Atharvaveda one of the four well known holy
scriptures (Vedas) of the Hindus, the Atharvaveda is the earliest reference for it medicinel
and therapeutic properties (Satyavati, 1991). Detained description regarding it action, use and
induction as well as the varieties of guggul have been described in numerous Ayurvedic treat
including Charaka samhita (1000 BC), Sushruta Samhita (600 BC and Vagbhata seventh
century AD). In addition, various medical lexicons were return between twelth and forteen
centuries AD. It responsible for reducing fat, indicated for healing Bone Fracture to
inflammation, Arthritis, Atherosclerosis, Obesity, Hyperlipidemia, Rheumatism,
Haemorrhids, Urinary disorder, skin disease high cholesterol, neuro-degenertion, Parkinson's
diseases, mongolism and ageing process. (Sushruta, 1954) (Pareek and pareek, 2012),
(Chodhary 2012, Polterat 1997, Pareek and Pareek, 2012 , Prior 2003 and Devasagayam et al
2004).
Guggul is a gum resin, historically used for antiseptic and deep penetrating action in the
treatment of elevated blood cholesterol and Arthritis. Guggul is effective as weight loss and
fat burning agent. It increase white blood cell count and possess strong disinfecting
properties. Used as a carrier and combined with other herbs to treat specific condition (Pareek
and Pareek, 2012, Dubey 2009, Nakayoma and Yamada 1995).
Traditionally, guggul plant is given in the form of YOG, where in guggul is mixed with other
drug’s along with castor oil or Indian clarified butter. The YOG could also be prepared by
cooking the guggul with water, and other herbal drug powder.Popular Ayurvedic formulated
containing guggul are: Yograj gugguluvati, Pachamrit ioh guggulu, Kaishore gugguluvayi,
Triphla guggulu and Sinhaguggluvati.(Mishra,1996).
Guggul has been a key component in ancient Indian Ayurvedic system of medicine and now
widely use in Morden medicine for treatment of heart ailments. But guggul (commiphora
wightii), as it’s locally known, has become so scarce because of its overuse in it two habitats
in india where it found Gujarat and Rajasthan. The extract, called guggulipid, comes from
the guggul tree and has been used in Ayurvedic medicine, a traditional Hindu medicine, for
nearly 3000 years in India. Today it existence is threatened because of iow seed production in
an adverse natural condition and recent environmental change due to rainfall pattern and
increasing level of atmospheric pollution. This plant species is fighting for its survival in the
natural habitat since a long time. Attempts have been made in this direction by number of
researchers including under present investigation towards its natural populations, germ-plasm
collection, cultivation techniques, Phytosociology and regeneration potentialities etc. at
different site of Western Indian Thar desert. (Pareek and Pareek, 2012),(Vineet 2008).
The oleo-gum resin commonly known as “gum guggul” or “Indian Myrrh” is the
economically important product of Indian bdellium. The oleo-gum is collected as exudates
from woody stem. A plant generally takes 10 years to reach tapping maturity under the dry
climate conditions. The thick branch is incised during the winter to extract the oleo-gum
resin. Guggul gum is a mixture of 61% resin, and 29.3% gum, in addition to 6.1% water,
0.6% volatile oil and 3.2% foreign matter. (Goyel et al, 2010).
3
Variorum Multi-Disciplinary e-Research Journal
Vol.,-04, Issue-I, August 2013
ISSN 976-9714
Biochemical Composition of Commiphora Wight II:-
The guggul plant seed contain 10% oil. The fatty acid composition and chemical properties of
the extracted oil were determined. Commiphora wightii has become endangered because it
slows growth nature poor seed setting and lack of cultivation, poor seed germination rate.
(Pareek and Pareek, 2012), ( Vineet 2008).
Present Status of Commiphora Wight II:-
Commiphora wightii has become an endangered species due to over exploitation for gum
resin. Guggulsterones present in gum-resin are potent lipid and cholesrol lowering natural
agent. Guggul plant drug currently used clinically in Indian and Europe. Guggul plants have
major contributions on Biology, Chemistry, Pharmacology and Biotechnology. (Pareek and
Pareek, 2012).
Plant Biodiversity:-
The Guggul plant as such region is poor in biodiversity. In Rajasthan state has large number
of species (commiphora wightii and commiphora mucul) has become endangered because it
slows growing nature, poor seed setting, and poor seed germination rate. Human causes the
major of threat to species, site and habitats. These are interconnected for example-In
Rajasthan slow growing nature associated with poor seed germination is also the major cause
of endangerment of commiphora wightii. In tropical countries, there are several problems
with production of quality plant stock of important plant species, such as irregularity of seed
supply to irregular flowering and fruiting, short viability period of seed, poor quality seed and
lack of seed storage and handling facilities. The plant commiphora wightii has become
endangered because of it slow growing nature, poor seed setting and lack of cultivation, poor
seed germination rate and excessive and unscientific tapping for it gum resin by the
pharmaceutical industries commiphora wightii, stem cutting offer several advantage over
seed. (Pareek and Pareek, 2012).
Biotechnological Approach to Save Guggul Plant:-
Guggul plant a highly valued endangered medicinal plant species using conventional in- vivo
propagation methods. Plant in natural surrounding suffers from poor seed setting, poor seed
viability and harsh arid conditions. (Ramawat et al, 1991).
The plant bear seed from April to May and August to October. The seed germination
percentage is only 15-18 %. (Prakash et al, 2000). Rooting responce of stem cutting was
shown to be improved by application of plant growth regulator such as Indole butyric acid
(Singh et al, 1998), by selection of cutting of suitable length and diameter. (Mertia et al
2000), (Puri et al, 1972) and treating them with potassium salts ( Kshetrapal et al, 1993).
Oleogum resin production was enchased in commiphora wightii by improved tapping
technique as reported. (Bhatt et al, 1989).
Propagation & Restoration of C.W. in natural habitats:-
In tropical countries some problem in production of quality planting in stock of important
plant species irregularity seed supply, flowering & fruiting. It is very difficult the yield of
quality seed & reforestation. The guggul plant unscientific tapping for gum resin by Pharma
industries & religion purposes. In this case the guggul plant stem cutting offer several
4
Variorum Multi-Disciplinary e-Research Journal
Vol.,-04, Issue-I, August 2013
ISSN 976-9714
advantage over seed. Stem cutting are also inexpensive and easier to practice and other
vegetative propagation method. It is tissue culture. Stem cutting and collected for mature
plant of guggul. The Guggul plant is growing a natural habitat during March to April. First
pretreated with different auxin (IBA and NAA) these cutting were planted in plastic bag
contain soil and manure in the ratio of 1:3 & transfer in green- shade house. After one month
plant develop from 0.7-09 mm diameter stem cutting. NAA (0.4 mg /L) and IBA (0.4mg/l)
were founf to be most effective. In july August the well developed plant were transfer in
natural habitat. (Pareek and Pareek, 2012), ( Kuldeep et al, 2012).
Reference:-
Sushruta samhita, chapter 15, cerse 37-38 (chowkamba Sanskrit sirija, Varanasi) 1954,62.
mishra S A, Bhaishjaya(surbharti pakashan,varanasi)1996,193.
Ramawat KG, Bhardwaj L and Tewari M N. Ind rev life sci 1991; 11:3-27.
Prakash J , Kasrea P K and chawan D D. Cur Sci 2000;78(10):1185-1187.
Singh P, Sharma ML and Mukherjee S. Ind drugs 1998; 26 :515-516.
Mertia RS and Nagrajan M Annuda of arid Zone 2000; 39 (1) : 87-88.
Puri DN and Kaul RN INd forest 1972; 98: 252-257.
Kshetrapal S and Sharma R Engl J ind Bot Soc 1993; 72:73-75.
Bhatt JR, Nair MNB and Mohan Ram HY. CUR Sci 1989; 58 (7): 349-357.
Gupta P., Shivanna K.R. and Mohanram H.Y.(1996), Apomixis and polyembrony in guggul plant,
Commiphora wightii. Annals of Botany. 78: 67-72.
Kuldeep Y, Narendra S and Sharuti V, 2012. Plant tissue culture: A biotechnological tool for solving
the problem of propagation of multipurpose endangered medicinal plant in India, J. of
agriculture technology, (1): 305-318.
Pareek A and Pareek L K (2012). Commiphora wightii (Guggal) An Endangered Medicinal
Plant of Rajasthan Needs Attention of Biotechnologists for Its Conservation. J. of
Pharmaceutical, Biological and Chemical Sciences. 3(1), 83-89.
Chaudhary (2012). Pharmacological Properties of Commiphora wightii Intern. J. of Pharma.
and Pharmaceutical Sciences. 4(3), 73-75.
Satyavati GV (1991). A promising hypolipidemic agent from gum guggul (Commiphora
wightii). Econ. Med. Plant Res. 5, 47-82.
Polterait O (1997). Antioxidants and free-radical Scavengers of Natural origin, Current Org.
Chem. 1415-1440.
Prior R L (2003). Fruit and vegetables in the prevention of cellular oxidative damage.
American J. Clin. Nut. 78, 570-578.
5
Variorum Multi-Disciplinary e-Research Journal
Vol.,-04, Issue-I, August 2013
ISSN 976-9714
Devasagayam T P, Tilak, J C and Boloor K K ( 2004). Free radicals and antioxidants in
human health: Curr. Stat. Fut. Prosp. 52, 794-804.
Dubey D.,Prashant K. and Jain S.K. (2009). In-vitro antioxidant activity of the ethyl acetate
extract of gum guggul (Commiphora mukul) Biological Forum An Interna. J. 1(1),
32-35.
Nakayoma J and Yamada M.(1995). Suppression of active oxygen-indeed cyto- toxicity by
flavonoids. Biochem. Pharmcol. 45, 265- 267.
Goyal P, Chauhan A and Kaushik P (2010). Assessment of Commiphora wightii (Arn.)
Bhandari (Guggul) as potential source for antibacterial agent, J. of Medicine and
Medical Sciences 1(3), 071-075.
Vineet S.(2008), In situ conservation of Commiphora wightii a red listed medicinal plant species
of Rajasthan state, India. Final project report of IUCN.
... Phenolic compound in the plant extract were analyzed using the phenolic standard for HPLC [18][19][20][21]. HPLC analysis was performed using a Waters 2487 HPLC system consist of dual y detector (5 ...
Article
The present study focus on Phytochemical Analysis and Antioxidant Activity of Commiphora Wightii L. (Guggul).The Phytochemical Analysis, β-Carotene Bleaching Assay, Anti-lipid peroxidation assay, Metal chelating activity, DNA damage inhibition efficiency, Determination of phenolic compounds (HPLC analysis) of Commiphora Wightii L. Extract were determined. In this all method of Commiphora Wightii L. extract exhibit good scavenging activity. The IC 50 Value= 934µg/ml. The zone of color retention was 15 mm in β-Carotene Bleaching Assay. IC 50 values was found to be 627µg/ml. in Anti-lipid peroxidation assay. IC 50 of the extract for chelating activity was 951 µg/ml. DNA protective efficiency of the extract was also studied using UV-photolysed H 2 O 2 driven oxidative damage to pBR322. HPLC analysis identified some of the major phenolic compounds in the extracts, which might be responsible for the antioxidant. The present study concluded that the guggul plant have a very good antioxidant activity. The future it can be used for treatment of cancer. 1. INTRODUCTION Medicinal plants and the human have very old relationship in nature. Medicinal plants are used for thousands of years and renowned for their effectiveness in cure of many diseases. These Medicinal plant products are very effective to improve the healing the allergies [1]. More than 80 % of the population throughout the world is directly and indirectly based on the traditional health care [2]. He also reported that 25% of modern medicines they come from, plant sources and many others from the modern pharmacopoeia are in fact synthetic analogues of drugs from the selected plant species [3]. Reported that use of medicinal plant increase the immune system, raising and renewing the body vitality and increasing the body resistance to infection. Many plants are directly used as medicines in our normal life. [4, 5]. Guggal (C. wightii) [6] (Arnott) Bhandari comb.) is a bushy shrub or small tree. Guggul plant is found in India (Rajasthan west part of Gujarat), and Pakistan (Baluchistan and Sindh). Guggul is an endemic species which is found in small part of the world [7]. Plant reproduction is occurring by sexually process and this may occur by sexual distribution: bisexual and female flowers and male flowers other stamminodes [8]. The maximum height of plant (bushy appearance at ground level branching tree) is 2-3 m. the heavy, shrubby and under the foliage of the ash-flakes, the color of bark on an uneven surface, the physical basis of the description [9]. The guggul modern therapeutic purposes is also targeted for rheumatoid arthritis, neurological diseases, hypercholesterolemia [10], leprosy, muscle, skin disorders, high blood pressure, and urine, and hypolipidemic and antioxidant [11]. The rubber the stickiness and platelets, and Gugulipid was the effective and cost-effective treatment is the Hyper-lipoproteinemia [12]. In new research, it was found that oleo-gum-resin effective against cardiovascular diseases and cancer [13]. The present study focused on phytochemical analysis and antioxidant activity of commiphora wightii (guggul) plant.
Chapter
Full-text available
Tribes of India are the centers of information on plant wealth and their different uses for the livelihood. They tend to use plants in various ways during their life. Herbal drug formulations used by these tribes are important also to the society. India is a rich diversity center of medicinal plants. Around 45,000 plant species nearly 15,000 plants are used for their medicinal values. Many of these plants are aromatic, but there has been nearly no such report available till date. Therefore, an attempt is made to compile a list of aromatic plants that are still being used by the Indian tribes for medicinal purposes. After a thorough study, overall 134 valid plant species are listed.
Chapter
Since ancient times, medicinal plants have shown immense potential in terms of their immune regulatory functions against viruses, bacteria, fungi, cancer, and inflammation. The belief in the system of folk medicinal practitioners has been passed on from one generation to another generation for many centuries due to their realistic consideration, constant experimentation, and regular testing. In general, the conventional system employs Emblica officinalis, Asparagus racemosa, Tinospora cordifolia, Inula racemosa, Withania somnifera, and different Terminalia species, along with other plants for making tonics and formulations. Currently, conventional medicinal plants are attracting special interest as ideal candidates for one of the major needs of mankind in the present century, i.e., immunity boosters. Furthermore, they have garnered much attention in clinical research as they offer cost-effective solutions for treating major health issues with fewer side effects than those of the allopathic global drug trade. As a result, the use of numerous Rasayana formulations has been boosted to the next level in various geographical areas covering India, China, Japan, Europe, USA, and Africa, and their consumption has reached a new level during the ongoing COVID-19 pandemic. Therefore, the current chapter highlights the potential of conventional medicinal plants including their families, their major bioactive molecules, and their associated therapeutic roles.
Article
Full-text available
Guggul plant commonly known as Commiphora wightii. It’s belonging to family Burseraceae and its plant belongs to class Magnoliopsida. Use of medicinal plants against disease is not new. We are using herbal plant extracts in our common life from human evolution. So many medicinal plants are available in our environment, which can be used for our benefit in direct or indirectly. Guggul plant (Commiphora wightii) is also contains lot of medicinal values. For checking the quality of these medicinal plants we have to determine the various biochemical tests, for its merits and demerits.
Article
Full-text available
The present study focus on Phytochemical Analysis and Antioxidant Activity of Commiphora Wightii L. (Guggul).The Phytochemical Analysis, β-Carotene Bleaching Assay, Anti-lipid peroxidation assay, Metal chelating activity, DNA damage inhibition efficiency, Determination of phenolic compounds (HPLC analysis) of Commiphora Wightii L. Extract were determined. In this all method of Commiphora Wightii L. extract exhibit good scavenging activity. The IC 50 Value= 934µg/ml. The zone of color retention was 15 mm in β-Carotene Bleaching Assay. IC 50 values was found to be 627µg/ml. in Anti-lipid peroxidation assay. IC 50 of the extract for chelating activity was 951 µg/ml. DNA protective efficiency of the extract was also studied using UV-photolysed H 2 O 2 driven oxidative damage to pBR322. HPLC analysis identified some of the major phenolic compounds in the extracts, which might be responsible for the antioxidant. The present study concluded that the guggul plant have a very good antioxidant activity. The future it can be used for treatment of cancer. 1. INTRODUCTION Medicinal plants and the human have very old relationship in nature. Medicinal plants are used for thousands of years and renowned for their effectiveness in cure of many diseases. These Medicinal plant products are very effective to improve the healing the allergies [1]. More than 80 % of the population throughout the world is directly and indirectly based on the traditional health care [2]. He also reported that 25% of modern medicines they come from, plant sources and many others from the modern pharmacopoeia are in fact synthetic analogues of drugs from the selected plant species [3]. Reported that use of medicinal plant increase the immune system, raising and renewing the body vitality and increasing the body resistance to infection. Many plants are directly used as medicines in our normal life. [4, 5]. Guggal (C. wightii) [6] (Arnott) Bhandari comb.) is a bushy shrub or small tree. Guggul plant is found in India (Rajasthan west part of Gujarat), and Pakistan (Baluchistan and Sindh). Guggul is an endemic species which is found in small part of the world [7]. Plant reproduction is occurring by sexually process and this may occur by sexual distribution: bisexual and female flowers and male flowers other stamminodes [8]. The maximum height of plant (bushy appearance at ground level branching tree) is 2-3 m. the heavy, shrubby and under the foliage of the ash-flakes, the color of bark on an uneven surface, the physical basis of the description [9]. The guggul modern therapeutic purposes is also targeted for rheumatoid arthritis, neurological diseases, hypercholesterolemia [10], leprosy, muscle, skin disorders, high blood pressure, and urine, and hypolipidemic and antioxidant [11]. The rubber the stickiness and platelets, and Gugulipid was the effective and cost-effective treatment is the Hyper-lipoproteinemia [12]. In new research, it was found that oleo-gum-resin effective against cardiovascular diseases and cancer [13]. The present study focused on phytochemical analysis and antioxidant activity of commiphora wightii (guggul) plant.
Article
Full-text available
Medicinal plants are those in which one or more of its organ contains substances that can be used for the therapeutic purposes or which, are precursors for the synthesis of useful drugs. Commiphora wightii (Burseraceae) is a most important medicinal plant in Ayurveda, Unani and Siddha system. Many biological effects have been demonstrated on lipid metabolism, thyroid hormone homeostatsis, female reproductive tissues, and endogenous nuclear hormone receptors. Gum of guggul used in incense, lacquers, varnishes, and ointments, as a fixative in perfumes, and in medicine. Therapeutic uses include treatment of nervous diseases, leprosy, muscle spasms, ophthalmia, skin disorders, ulcerative pharyngitis, hypertension, ischaemia, and urinary disorders. Therefore, present review is an overview of phytochemical, and harmacological properties of plant.
Article
Full-text available
There is a great need to discover novel antibiotics due to wide-spread emergence of resistance among pathogenic bacteria against available antibiotics. The current study deals to access the susceptibilities of some clinically significant bacteria against various crude extracts of Commiphora wightii gum resin. Agar well diffusion assay was the key process to evaluate the antibacterial potential of various crude extracts of the plant. Active crude extracts were further subjected to determine MIC against susceptible bacteria. The study indicated that antibacterial activity was found to be dependent on the type of extract and the organism evaluated. Ethanol extract was found to have comparatively higher activity than other organic and aqueous extracts. Gram-positive bacteria showed competent but variable susceptibilities to all the tested extracts. MIC data showed hopeful results as some of the extracts exhibited significant inhibitions of bacteria even at low concentrations. Phytochemical analysis of the active extract reveals the presence of certain metabolites. Commiphora wightii gum resin is shown to have promising antibacterial activity that could be very useful in the discovery of novel antibiotic.
Article
Natural compounds with antioxidative properties which have been reported from plant, microbial or animal sources are reviewed. Antioxidants have been found within most natural substance classes. Flavonoids are by far the most comprehensively investigated natural products. Reactivity towards various radicals has been studied under many experimental conditions and structure-activity relationships have been established. Tannins, coumarins and, more recently, xanthones have also been investigated in some detail. Studies on alkaloids have concentrated so far mostly on benzylisoquinoline alkaloids. At the same time, particular interest has been provided by some plant species or genera normally consumed as food or spices. Curcuminoids isolated from various Curcuma have shown potent antioxidant properties. Phenolic diterpenes from Rosmarinus officinalis possess very promising activity. The exceptional stability of sesame oil from Sesamum indicum led to the isolation of sesamol, together with several bisfuranyl lignans. The search for new natural antioxidants is not confined to higher plants. A great variety of metabolites including in particular phenazine and carbazole derivatives have been isolated from Streptomycetes or fungal strains. Several active compounds, among others porphyrins, hydroquinones, chromenes and complex indole alkaloids have been isolated from tunicates, bivalves and marine algae.
Article
The present report is a part of our study on the reproductive biology of a traditional Indian medicinal plant,Commiphora wightii, a source of guggul steroids. Field examination showed a predominantly large number of isolated and groups of female individuals. Only one andromonoecious and two exclusively male plants were recorded. Female plants set seed irrespective of the presence or absence of pollen. Hand-pollination experiments and embryological studies have confirmed the occurrence of non-pseudogamous apomixis, nucellar polyembryony and autonomous endosperm formation for the first time in this plant, which is presently threatened by over-exploitation.
Article
The flavonoids quercetin, kaempferol, catechin and taxifolin suppressed cytotoxicity of active oxygen species (O2- and H2O2) on Chinese hamster V79 cells. Cytotoxicity of active oxygen species was assessed with a colony formation assay. The flavonoids prevented the decrease in the number of colonies caused by H2O2 or O2- at concentrations which were not themselves cytotoxic. There was a very substantial difference in the dose-dependency of the protective effects brought about by quercetin and kaempferol in contrast to catechin and taxifolin. The structure-activity relationship revealed that either the o-dihydroxy structure in the B ring or certain structures in the A and C rings of the flavonoids are necessary for the protective activities.
Article
Numerous studies have demonstrated in vitro effects of flavonoid components from fruits and vegetables on various measures of oxidative cellular damage. However, the questions that have not been answered satisfactorily deal with the absorption/metabolism of antioxidant components in fruits and vegetables and whether they are absorbed in sufficient quantities and in a form in which effects on in vivo measures of oxidative cellular damage could be observed. The focus of this review is on clinical studies that provide information about possible in vivo changes in antioxidant status with fruit and vegetable consumption. Two classes of flavonoids as antioxidants are considered in detail (anthocyanins and flavonols). Absorption of anthocyanins appears to be much less than that of the flavonol quercetin, perhaps as little as one tenth. Relatively high dietary levels of anthocyanins appear to be necessary to observe antioxidant effects in vivo. Metabolism of cyanidin 3-glucoside and quercetin by methylation or conjugation with glucuronide or sulfate will decrease antioxidant activity. However, quercetin metabolites seem to maintain at least part of their antioxidant activity in vivo. A potential role for food flavonoids and polyphenolics as antioxidants is discussed.
Article
Free radicals and related species have attracted a great deal of attention in recent years. They are mainly derived from oxygen (reactive oxygen species/ROS) and nitrogen (reactive nitrogen species/RNS), and are generated in our body by various endogenous systems, exposure to different physicochemical conditions or pathophysiological states. Free radicals can adversely alter lipids, proteins and DNA and have been implicated in aging and a number of human diseases. Lipids are highly prone to free radical damage resulting in lipid peroxidation that can lead to adverse alterations. Free radical damage to protein can result in loss of enzyme activity. Damage caused to DNA, can result in mutagenesis and carcinogenesis. Redox signaling is a major area of free radical research that is attracting attention. Nature has endowed us with protective antioxidant mechanisms- superoxide dismutase (SOD), catalase, glutathione, glutathione peroxidases and reductase, vitamin E (tocopherols and tocotrienols), vitamin C etc., apart from many dietary components. There are epidemiological evidences correlating higher intake of components/ foods with antioxidant abilities to lower incidence of various human morbidities or mortalities. Current research reveals the different potential applications of antioxidant/free radical manipulations in prevention or control of disease. Natural products from dietary components such as Indian spices and medicinal plants are known to possess antioxidant activity. Newer and future approaches include gene therapy to produce more antioxidants in the body, genetically engineered plant products with higher level of antioxidants, synthetic antioxidant enzymes (SOD mimics), novel biomolecules and the use of functional foods enriched with antioxidants.