Antimicrobial and antioxidant activity of leaf and flower extract of. Therefore, it is pertinent to explore the traditional medicinal plants, which can be utilized for lowering blood glucose levels and also obesityrelated biomarkers. The aim of present work was identification and introducing of medicinal plants with the highest activity by. In vitro antioxidant activity and phenolic contents in. Some selected medicinal plants used by bentian tribe from indonesia were evaluated for potential antimicrobial and antioxidant properties. Their use ranges the production of mainstream pharmaceutical products to herbal medicine preparations. Antibacterial and antioxidant activity of traditional medicinal plants from the balkan. Antioxidant activity of plant extracts was assessed by. The results from various free radical scavenging systems reveal that the selected plants have shown. Page 7 traditional and medicinal uses of carica papaya aravind.
The fruit and medicinal herb extracts had strong inhibitory activities in cellbased systems, including h 2 o 2 induced oxidative stress in human keratinocytes and lipid accumulation in 3t3l1 cells. Antioxidant activity and free radical scavenging capacity of. Dpph free radical scavenging activity of the extracts of the. The most frequent form in which they are used is an aqueous infusion or decoction. In response to the increased popularity and greater demand for medicinal plants, a number of conservation groups are recommending that wild medicinal plants be brought into cultivation 1. Numerous plants are used to cure or prevent diseases. The antioxidant, antiinflammatory, and cytotoxic activities of water and ethanol extracts of 14 chinese medicinal plants were investigated and also their total phenolics and flavonoid contents measured. Plants with iron chelating activity are most effective for reduce of lipid peroxidation reaction and therefore play a key role in medicinal practice 5. These plants are promising candidates for functional foods products. This study aimed at conducting the phytochemical analysis and in vitro antioxidant activities of the stembark extracts of selected medicinal plants leptadenia hastata, barringtonia asiatica and barringtonia racemosa. The content of total phenolics in the extracts was determined spectrometrically according to the folin. Assurance of the safety, quality, and efficacy of medicinal plants and herbal products has now become a key issue in industrialized and in developing countries. In vitro antioxidant activity potential of lantadene a, a pentacyclic triterpenoid of lantana plants, molecules, vol.
International journal of pharmaceutical and clinical research 20. May 05, 2011 the alternative natural compounds with efficient antioxidant activity have been paid increasing attention. In vitro antioxidant activity and phenolic contents in methanol extracts from medicinal plants. Antioxidant activity of plant extracts containing phenolic. Herbal medicine is one of the oldest forms of medical treatment in human history and could be considered one of the forerunners of the modern pharmaceutical trade.
Acetylcholinesterase inhibition and antioxidant activity. Antioxidant activity of some common medicinal plants. Frap assay was done according to benzie and strain procedure 40. Antibacterial and antioxidant activities of 8 aromatic plants from the balkan peninsula were studied. Alsaid1, 1pharmacognosy department, 3drug bioavailability laboratory college of pharmacy, king saud university, po box. Pdf over the years, research on antioxidants and medicinal plants has gained enormous popularity. Medicinal plants used in the traditional medicine are wellknown significant sources of natural antioxidants. Antioxidant activity was determined by dpph free radical scavenging assay, abts free radical. In vitro nitric oxide scavenging activity of methanol. The table 2, 3, and 4 shows the antioxidant activities of the ethanol, methanol and hexane extracts of six green leafy vegetables glvs assessed using the dpph radical scavenging. In contrast, the sugar moiety markedly reduced the activities of coumarin glycosides. Nitric oxide scavenging activity, antioxidant activity.
To isolate and analyse the chemical composition in the essential oils and free radical scavenging activity of different crude extracts from the fresh and dry leaves of vegetable plants of lactuca sativa l. Pdf in vitro antioxidant and antiproliferative activity. Ethiopia is one of the developing countries which have enormous diversity of plants. Ferric reducing antioxidant power frap assay was used to measure the total antioxidant power of the extracts. Understanding their mechanism of action and therapeutic efficacy, 2012. Antioxidant activity of some selected medicinal plants in. As antioxidant activity is the basic factor of food function and also plays an important role in herbal medicine function, the antioxidant activity of many herbal resources and kampo formulas has been studied and much information has accumulated. Method collected plant species were subjected to maceration in methanol for 72 hrs. Journal of biologically active products from nature. In this study, we compared the antioxidant properties of ten peruvian plants infusions and investigated their relation to the phenolic content. Shahabimajd2 1department of medicinal chemistry, faculty of pharmacy, mazandaran university of medical sciences, sari, iran. The coumarins having a catechol group, 2, 3 and 19, showed significant free radical scavenging activity and inhibitory effects on lipid peroxidation, indicating that the catechol group significantly contributed to the antioxidant activities of coumarins. However, the term antioxidant comprises rather complex features.
Antioxidant activity an overview sciencedirect topics. Impulse voltamperometry was used to study the antioxidant activity of a series of tinctures from medicinal plants. Research article open access antioxidant activity, total. However, due to having a large variety of medicinal plants species, all of the major medicinal plants have not yet been evaluated for their medicinal properties, including antioxidant activity. Antioxidant activity of selected medicinal plants journal. Antiaging potential of extracts prepared from fruits and. Consistent with this, the in vitro antioxidant activity of the medicinal herbs was stronger than the antioxidant activity of the fruits. There has been increasing interest in the research on flavonoids from plant sources because of their versatile health benefits reported in various epidemiological studies.
Screening of in vitro antioxidant activity of methanolic leaf. Antioxidant capacities and phenolic contents of medicinal plants namely usnea longifolia, cetraria nepalensis, par melia minarum, everniastrum nepalense, rhododendron anthopogon and fritillaria delavayi were analyzed via folinciocaltau assay, ferric reducing activity power assay and 2,2diphenyl1picrylhydrazyl assay. Antibacterial and antioxidant activity of traditional. Evaluation of antioxidant activity of two important memory. The antioxidant effects were evaluated using in vitro, 2, 2diphenylpicrylhydrazine photometric assay and in vivo serum catalase. Bandita deo 1, monalisha nath2, preetam kumar nayak 3, yogamaya dhal4 regional plant resource centre, nayapali, bhubaneswar, odisha, india. Antioxidant properties of several medicinal plants. The bark extract of the plant showed scavenging activity of hydroxyl radicals and the extract contained polyphenols. Antioxidant activities of coumarins from korean medicinal. Antioxidant activity exhibited by medicinal plants.
The study of antioxidant activity of medicinal plants and vegetables strongly supports the idea. Many extraction factors play important roles in the extraction efficiency, such as type and concentration of extraction solvent, extraction temperature, extraction time, and extraction ph. The antioxidant activity of these two medicinal plants was evaluated by measuring reducing ability, free radical scavenging activity by dpph and hydrogen peroxide methods. The antioxidant activity of the aerial part extract of m. Antimicrobial and antioxidant properties of medicinal. The antioxidant activity of methanol extracts of thyme thymus daenensis celak.
This is an open access article distributed under the terms of the creative. Dietary plants contain variable chemical families and amounts of antioxidants. Antioxidant capacity and phenolic content of some nepalese. Plants synthesise hundreds of chemical compounds for functions including defence against insects, fungi, diseases, and herbivorous mammals. As plants produce a lot of antioxidants they can represent a source of novel compounds with promising antioxidant activity. Chinese medicinal plants contain a wide variety of natural antioxidants, such as phenolic acids, flavonoids and tannins and possess more potent antioxidant activity than common dietary plants cai et al. Antioxidant activity of some common medicinal plants impact factor. Determination of antioxidant activity by using in vitro methods 2. Antioxidant capacities and phenolic contents of medicinal plants namely usnea longifolia, cetraria nepalensis, parmelia minarum, everniastrum nepalense, rhododendron anthopogon and fritillaria delavayi were analyzed via folinciocaltau assay, ferric reducing activity power assay and 2,2diphenyl1picrylhydrazyl assay. Witch hazel, propolis epid, artichoke, and hawthorn afforded.
Medicinal plants mostly combat these complications with their antioxidant activities. The antioxidant activity was evaluated in a biological assay using saccharomyces cerevisiae, whereas the radical scavenging activity was measured using the 2,2diphenyl1picrylhydrazyl dpph. It has been mentioned that antioxidant activity of plants might be due to their phenolic compounds cook and samman, 1996. Antioxidant activity of african medicinal plants request pdf. The bioavailability, metabolism, and biological activity of flavonoids depend. Nitric oxide scavenging activity, antioxidant activity, active nitrogen species, sodium nitroprusside. Antioxidant properties of several medicinal plants growing. The most common and widely distributed group of phenolic compounds in plants is flavonoids. The leaves stem bark and root of the plants were extracted with nhexane, ethyl acetate and ethanol to give respective extracts. Pdf methods for determining the antioxidant activity.
Previous studies showed that a wide range of medicinal plants exerted antioxidant and free radical scavenging activity. Antibacterial and antioxidant activity of traditional medicinal plants. Antimicrobial activity against propionibacterium acnes and candida albicans was determined by an agar well diffusion method. The former is a shrub or small tree available in forests throughout the central and western. Acetylcholinesterase inhibition and antioxidant activity of some medicinal plants for treating neuro degenarative disease abdelaaty a. Antioxidant activity and total phenolic contents of some. The current study is an attempt to identify and compare the potential candidates from among the plants for cholinesterase inhibition as well as antioxidant activity. In present study, we carried out a systematic record of the relative antioxidant activity in selected iranian medicinal plant species extracts. The major plant compounds characterized by antioxidant activity are polyphenols. Medicinal plants derived natural antioxidants, which are in the form of raw extracts andor chemical constituents, are very efficient to block the process of oxidation by neutralizing free radicals 3. Medicinal plants have been used in virtually all cultures as a source of medicine. A read is counted each time someone views a publication summary.
Much interest, in medicinal plants however, emanates from their long use in folk medicines as well as their prophylactic properties, especially in developing countries. Phytochemical investigation and in vitro antioxidant activity of an. Antioxidant activity exhibited by medicinal plants, vegetables and fruits from north of iran reyhaneh sariri. Antioxidant activity, phenol and flavonoid contents of some. Hepatoprotective and antioxidant activity of ethanol extract. With the emergence of multiple strains of antibiotic resistance microorganism, great interest has been generated in search for potential compounds from plants for therapeutic, medicinal, aromatic and aesthetic uses 2,3. Antioxidant activity, total phenolic and flavonoid contents. Nutritional composition, mineral content, antioxidant activity and. The plants containing antioxidant compounds can protect. Antioxidant activity, phenol and flavonoid contents of. Johns wort, ginseng, rosewort, and eleutherococcus. Antioxidant properties of medicinal plants from peru 73.
Antioxidant activity, phenolic content, and peroxide value of essential oil and extracts of some medicinal and aromatic plants used as condiments and herbal teas in turkey. Antioxidant and antiinflammatory medicinal plants have. Aside the antioxidant role played by medicinal plants, antiinflammatory potential plants has been reported with cardioprotective effect. Antioxidant properties of medicinal plants from peru.
Oct 09, 20 medicinal plants are plants that have a recognized medical use. Even you can use the pulp left after extracting the juice from papaya as poultice on the wounds. Its well known that medicinal herbs posses antioxidant properties that contribute to their therapeutic bene its chirag et al. The antioxidants compounds like ascorbic acid, total phenols and tannins were also evaluated in these plants. All the plants were extracted by solvent maceration extraction methods. Several preclinical and epidemiological studies have found an inverse association between the consumption of fruits, vegetables andor grains which generally are high in antioxidants and induction of diseases in humans. In vitro screening for anticholinesterase and antioxidant. Traditional healers, often referred as herbal healers, from. Green tea, oligomeric procyanidins from grape seed and pine bark, bilberry, and ginkgo exhibited taa in the range of 5. Department of pharmacognosy, nimra college of pharmacy, vijayawada, andhra pradesh.
Extraction methods of antioxidants from foods and medicinal plants. Aframomum melegueta schum zingiberaceae is a perennial herb widely cultivated for its valuable seeds in the tropical region of africa. There is an increasing interest in natural antioxidants e. Objective the objective of the study was to investigate the antioxidant activity of selected medicinal plants. Minimal inhibitory concentration of metanoic extracts ranged from 6. Plants as natural antiinflammatory agents unlike modern allopathic drugs which are single active components that target one specific pathway. Antioxidant activities were determined using dpph 1,1diphenyl2picrylhydrazyl radical scavenging and ferric reducing antioxidant power frap assays. The antioxidant activity of flavonoids depends upon the arrangement of functional groups about the nuclear structure.
Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Antioxidant role normal aerobic metabolic processes as well as exposure to radiation, redox cycling materials and other environmental substances result in free radical generation in the body 73. In vitro antioxidant and anticancer activity of leea. The reactions mechanism involves the electrondonating ability and results in the decolorization of the radical. The antioxidant activity of polyphenols is accredited to their redox properties i. Keeping the above in view the present chapter focuses on the i diversity of antioxidant phytochemicals in medicinal. The antioxidative activity of a total of 92 phenolic extracts from edible and nonedible plant materials berries, fruits, vegetables, herbs, cereals, tree materials, plant sprouts, and seeds was examined by autoxidation of methyl linoleate. Rhizophora mangle is a plant from rhizophoraceae family. Antioxidant properties of medicinal plants springerlink. Medicinal plantsderived natural antioxidants, which are in the form of raw extracts. Screening of medicinal plant extracts for antioxidant activity.
Pdf medicinal plants with antioxidant and free radical. Natural antioxidants in foods and medicinal plants. Antioxidant activities and phenolic contents of 26 species extracts from 20 botanical families grown in northwestern himalaya were investigated. Total phenolic content tpc was determined using a folinciocalteu assay. Antioxidant activity and total phenolic contents of some traditional medicinal plants from zimbabwe. Frontiers evaluation of antioxidant, antidiabetic and. Antioxidant and antiinflammatory activities of selected. Evaluation of the in vitro and in vivo antioxidant potentials.
Antioxidant activity phenolic content and peroxide value of essential oil and extracts of some medicinal and aromatic plants used as condiments and herbal teas in turkey. Some indian traditional medicinal plants w ith antioxidant. Antioxidant activity of ijpcr, apriljune 20, vol 5, issue 2, 4346 page 46 in the present study we concluded that all the plants selected for the experiment showed moderate antioxidant activity, in different solvents. Antioxidant activity, total phenolic and flavonoids contents. Large number of medicinal plants has been investigated for their antioxidant properties. The present study evaluated the antioxidant effects of methanolic seed extract of a. Leaves and flowers of selected plants were collected at. Commonly used medicinal plant extracts with standardized content of polyphenols were investigated for their total antioxidant activity taa. Antioxidant activity assays were performed by the method described by benzie and strain 14 with a. Plants contain a wide variety of free radical scavenging molecules, such as polyphenols, dietary glutathione, vitamins and endogenous metabolites. Since flavonoids are directly associated with human dietary ingredients and health, there is need to evaluate structure and function relationship.
Antioxidant activity, phenol and flavonoid contents of some selected iranian medicinal plants f. The ascorbic acid, carotenoids and total phenol contents with antioxidant activity were also determined. Antioxidant is a molecule that inhibits the oxi dation of other molecules. Pdf antioxidant activity of selected medicinal plants of. Oxidation is a chemi cal reaction that transfers electron or hydrogen. Antioxidant and iron chelating activity of coriander. The configuration, substitution, and total number of hydroxyl groups substantially influence several mechanisms of antioxidant activity such as radical scavenging and metal ion chelation ability 4, 67. All the tested plants depicted the antioxidant activity with variation in. Page 21 dpph free radical scavenging activity of some leafy. Total phenolic and flavonoid contents and antioxidant activity of four iranian herbs lamiaceae were investigated. Previous studies showed that a wide range of medicinal plants exerted antioxidant activity. The free radical scavenging activity against 1,1diphenyl2picryl hydrazyl dpph was evaluated during the course of work. Pdf chemical composition of essential oils and in vitro. Extraction is the first and crucial step for studying the natural antioxidants from plants figure 1.
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