Phenolic compounds are a chemically heterogeneous group, with the following chemical properties. The various antioxidant compounds with different chemical characteristics and polarities of plant materials are soluble in different solvents. Antioxidant properties of popular turmeric curcuma longa. Luque department of physical chemistry, faculty of pharmacy, university of granada, 18071 granada, spain. Abstractrecent research focuses on health benefits of phytochemicals, especially antioxidant and antimicrobial properties of phenolic compounds, which is known to exert preventive activity against infectious and degenerative diseases. Characterization of phenolic compounds and antioxidant. University of sarajevo, faculty of science, department of chemistry, zmaja od bosne 3335, 7 sarajevo, bosnia and herzegovina raw material for the preparation of cho antioxidants include polyphenols and catechins. Antioxidant and antiradical properties of selected flavonoids and phenolic compounds zubeyirhuyut,1 fukrubeydemir,2 andelhamigulcin3 1departmentofbiochemistry,medicalfaculty,yuzuncuy. The flavonoids are a large class of compounds, ubiquitous in plants, and usually occurring as gly cosides.
Aqueous extracts of 30 plants were investigated for their antioxidant properties using dpph and abts radical scavenging capacity assay, oxygen radical absorbance capacity orac assay, superoxide dismutase sod assay, and ferric reducing antioxidant potential frap assay. Pdf antioxidant properties, phenolic composition, bioactive. Phenolic and carotenoid compounds with antioxidant properties in vegetables have been found to be retained significantly better through steaming than through frying. Pdf antioxidant and antiradical properties of selected. Their structures were determined by spectral methods nmr, ms, ir.
The research focused on the changes of phenolic compounds as well as their antiradical activity and reducing power isolated from amur grape vitis amurensis seeds during germination under optimal conditions and under osmotic stress. Phenolic compounds in macadamia nuts and shells were identified, and their antioxidant activities were evaluated in refined macadamia nut oil. Here, we will provide an overview of the role of phenolic compounds, vitamins and carotenoids present in brassica vegetable crops in relation to antioxidant properties and human health. The antioxidant effects of phenolic compounds have been investigated at different concentrations to relate activity to structural effects.
Phenolic compounds as bioactive substances are a large heterogeneous group of secondary plant metabolites that have been widely distributed in plants and are important constituents of human diet. Drought stress caused reduction in total phenolic compounds in grapevine leaves and. The results prove the importance of phenolic compounds in the antioxidant behaviour of spice extracts and also that they contribute significantly to the total antioxidant capacity. The in vitro antioxidant and antiobesity properties of various extracts were investigated. Usually, phenolics that possess antioxidant activity are known to be mainly flavonoids and phenolic acids. Phenolic compounds with antioxidant properties from canola. Phenolic compounds of cereals and their antioxidant. Phenolic compounds of cereals and their antioxidant capacity. Antioxidant activity and phenolic compounds in selected herbs. Primarily they occur in conjugated forms, with one or more sugar residues linked to hydroxyl groups, although direct linkages of the sugar polysaccharide or monosaccharide to an aromatic carbon also exist. For this purpose, we evaluated antioxidant properties of ginger zingiber ofcinale rosc. Characterization of phenolic compounds and antioxidant properties of glycyrrhiza glabra l. Profiling of phenolic compounds and their antioxidant and.
The snow alga chlamydomonas nivalis was collected from the sierra nevada, california, usa, and examined for its ability to produce phenolic compounds, free proline, and provide antioxidant protection factor in response to uva and uvc light. In the last few years, phenolic compounds derived from natural sources have been linked to antioxidant, antiinflammatory, antiallergic, anticarcinogenic, antihypertensive, cardioprotective. Numbering over 4,000 distinct species mostly from plants, many of these compounds have antioxidant activity in vitro, but are unlikely to be antioxidants in vivo. The extracts from seeds germinated under optimal conditions exhibited strong antiradical properties against the dpph 2,2diphenyl1picrylhydrazyl radical as well as reducing power. Phenolic compounds and antioxidant properties of breeding lines between the white and black rice. Among the several classes of phenolic compounds, the phenolic acids, flavonoids, and tannins are regarded as the main dietary phenolic compounds. Because of the diversity and complexity of natural mixtures of phenolic compounds in the three berries, it is difficult to characterize every compound and elucidate its structure. Anioidan acii and phenolic compond of ginge zingiber.
The antioxidant capacity of phenolic compounds is also attributed to their. Ethanol is an organic polar solvent suitable for the extraction of phenolic compounds and is safe for human consumption. The results also revealed that, on a weight per weight basis, the bitter melon had better 2,2diphenyl1picrylhydrazyl. Journal of basic and clinical physiology and pharmacology 2019, 30 2, 251257. Antioxidant properties of phenolic compounds sciencedirect. Flavonoids and phenolic acids as antioxidant properties flavonoids and phenolics are well known for their antioxidant activity and we know that antioxidants are specific compounds that protect human, animal and plant cells against the damaging effects of free radicals in. Thinlayer chromatography of oil extracted from macadamia nut kernels and shells indicated the possible presence of catechol, phrogallol, and 3,4,5trihydroxy phenolic compounds. Flavonoid, phenolic contents and antioxidant properties of. Phenolic compounds and flavonoids are known by their antioxidant properties and one of the most important sources for humans is the diet. Depending on reaction partner, the antioxidant may also exhibit prooxidant properties.
Analysis of phenolic acids in barley by highperformance liquid chromatography. In general, herbs and plants are rich in compounds with antioxidant properties, such as vitamins e and c, glutathione, enzymes and phenolic compounds. Antioxidant effect of polyphenols and natural phenols wikipedia. Pdf changes in composition of phenolic compounds and. Journal of agricultural and food chemistry 2001, 49 11, 51655170. Phenolic compounds, antioxidant properties and enzyme. Among them, a novel compound, 4hydroxyacetophenone4o. Another study suggested that the antioxidant and free radical scavenging properties in the extracts of bitter melon could be attributed to flavonoids and other phenolic compounds 11. Characterizing traditional rice varieties grown in temperate.
Honey a sweet natural product produced by honey bees form nectar, and other plant juices is also a good source of antioxidants. The interaction among plant metabolites can be synergistic, antagonistic or additive and the effect of mutual action can lead to the changed final effect. Concentration of phenolic compounds found in eight edible mushrooms, a. Comparative study of antioxidant properties and total. Phenolic compounds and antioxidant activity of cocoa and chocolate products ibric, a. Total phenolic and flavonoid contents were found to change between 354441 mg gaeg and 23123 mg qeg, respectively. Phenolic compounds, ascorbic acid, carotenoids and antioxidant properties of green, red and yellow bell peppers article pdf available in journal of food agriculture and environment 12. Recent studies have shown that many dietary polyphenolic constituents derived from plants are more effective antioxidants in vitro than vitamins e or c, and thus. The best antioxidant properties were displayed by the extract from hemp, pumpkin and rapeseed oils.
Phenolic compounds and antioxidant properties of high. Hplcdad analysis of phenolic compounds and antioxidant properties of asphodeline lutea roots from bulgaria and turkey. Antioxidant and antiradical properties of selected flavonoids. For example, alcohols have a double effect on the reaction rate between the phenol and the peroxyl radical. Extraction optimization and in vitro antioxidant properties. Pdf antioxidant activity of phenolic compounds in 32 selected herbs. The highest content of total phenolic compounds was determined for the pumpkin and hemp oils about 2. Antioxidant activities of several therapeutic compounds like ascorbic acids possess significant properties which could ameliorate the effects seen. The antioxidant capacity of the phenolic compounds is strongly reduced when the reaction medium consists of a solvent prone to the formation of hydrogen bonds with the phenolic compounds. Sea buckthorn juice and japanese quince juice had a lower antioxidant capacity, yet higher than determined for gojiberry and cranberry juices. Oct 12, 2017 phenolic compounds and flavonoids are known by their antioxidant properties and one of the most important sources for humans is the diet. Several spice extracts have shown their properties to prevent the autoxidation of.
The purpose of the study was to analyze the antioxidant properties of vitamin c. Phenolic compounds are known to have strong in vitro and in vivo antioxidant effects as they are reducing agents i. Effects of different drying methods on extractable phenolic. An optimised aqueous extract of phenolic compounds from. Antioxidant effect of polyphenols and natural phenols. Antioxidant properties of free, soluble ester and insolublebound phenolic compounds in different barley varieties and corresponding malts. Many studies have shown a strong and positive correlation p. Phenolic compounds play an important role in health benefits because of their highly antioxidant capacity. Total phenolic content was also determined by the folin. Lemon myrtle backhousia citriodora is one of the most commercially grown native herbs in australia. There is currently much interest in phytochemicals as bioactive components of food. European food research and technology 2015, 241 4, 553572. Pdf antioxidant properties and phenolic compounds in.
Nov 02, 20 honey a sweet natural product produced by honey bees form nectar, and other plant juices is also a good source of antioxidants. Acerola owes its high antioxidant properties mainly to vitamin c, whereas the antioxidant capacity of wild rose is also attributed to its rich content of flavonoids and phenolic acids. Phenolic acids are a major class of phenolic compounds, widely containing in the plant kingdom especially in fruits and vegetables. Antioxidant properties, phenolic composition, bioactive compounds and. Due to the harmful effects of synthetic antioxidants such as bha and bht, natural novel antioxidants have become the focus of attention for protecting foods and beverages and reducing oxidative stress in vivo. Overall, both methanol 80% and ethanol 70% were found to be the best solvents for the extraction of antioxidant compounds from moringa leaves. Survey of antioxidant capacity and phenolic composition of. Ferreiraa the present work aims to characterize and quantify the phenolic composition and to evaluate the.
Some individual phenolic compounds in eae were determined by hplc analysis and the most dominant compound was gallic acid 35. Recent studies have shown that many dietary polyphenolic constituents derived. Typical phenolics that possess antioxidant activity are mainly phenolic acids and flavonoids. This is the first report on the antioxidant properties of the extracts from freezedried moringa leaves. Antioxidant activity of plant extracts containing phenolic. Study of phenolic compounds as natural antioxidants by a. Antioxidant compounds and their antioxidant mechanism. Phenolic compounds, antioxidant capacity and physicochemical properties of brazilian apis mellifera honeys article pdf available in lwt food science and technology 91. Antioxidant activity and phenolic compounds in 32 selected. Methanol and ethyl acetate extracts exhibited stronger antioxidant abilities compared to water extract. The content of total phenolic compounds in seed extracts is positively correlated with their antioxidant properties.
Antioxidant properties of phenolic compounds occurring in. However, phenolic compounds in plant foods are presented in free and bound forms. The present study was carried out to evaluate the antioxidant activity and quantitative estimation of the total phenolics as gallic acid equivalent. Their antioxidant capacities are related to these hydroxyl groups and phenolic rings. Antioxidant and antimicrobial potential of phenolic.
Extraction optimization and in vitro antioxidant properties of phenolic compounds from cumin cuminum cyminum l. Their concentrations in cereals are influenced by types, varieties and the part of the grain. The major phenolic compounds were benzoic acid, epicatechin, syringic acid and catechin. The obtained extracts were characterized by different scavenging activities of 2,2. Antioxidant properties of various solvent extracts of. Phenolic compounds are known to act as antioxidants. Grapes contain certain polyphenol compounds, although none has been shown to be an antioxidant in vivo. Additionally, synergistic effects of phenolics with other antioxidants. Antioxidant and antiradical properties of selected. Antioxidant and antimicrobial properties of honey are due to presence of variety of compounds like phenolics, ascorbic acid.
Turmeric and its constituents have been credited to have many therapeutic benefits where antioxidants are believed to play the major therapeutic role related to the beneficial effects 26. Different phenolic compounds normally have specific chromatographic behavior retention time, t r and uvvisible spectral characteristics. Pdf changes in the composition of phenolic compounds and. Recent studies have shown that many dietary polyphenolic constituents derived from plants are more effective. Phenolic compounds and antioxidant activity of cocoa and. A polyphenol antioxidant is a type of antioxidant containing a polyphenolic substructure and studied in vitro. Phenolic compounds comprise one phenolic acids or more polyphenols aromatic rings with attached hydroxyl groups in their structures. Recent studies have shown that many dietary polyphenolic constituents derived from plants are more. Phenolic acids are a major class of phenolic compounds, widely occurring in the plant kingdom especially in herbs and vegetables. Antioxidant properties and phenolic compounds of vitamin c. The antioxidant activity of phenolic rich extracts is commonly correlated with the total phenolic content, evaluated by means of the folinciocalteau assay. The roles of fruit, vegetables and red wine in disease prevention have been attributed, in part, to the antioxidant properties of their constituent polyphenols vitamins e and c, and the carotenoids. Pdf phenolic compounds, ascorbic acid, carotenoids and. Despite the antioxidant activity, they have many other beneficial effects on human health.
Pdf total equivalent antioxidant capacities teac and phenolic contents of 32 spices extracts from 21 botanical families grown in poland were. All plant phenolic compounds arise from a common intermediate, phenylalanine, or a close precursor, shikimic acid. Antioxidant and antimicrobial properties of rosemary. In addition to maltol different types of phenolic acids such as salicylic acid, vanillic acid, genistic acids, syringic phenolic compounds and antioxidant properties of high hydrostatic pressure and. Another characteristic is that this is a chemical group with high antioxidant activity aoa. Influence of a selenium biofortification on antioxidant properties and phenolic compounds of apples malus domestica by sabrina groth 1, christoph budke 2, susanne neugart 3, sofia ackermann 1, fenjasarah kappenstein 1, diemo daum 2 and sascha rohn 1. Structureantioxidant activity relationships of flavonoids and phenolic acids. Ten phenolic compounds were isolated from a butanol fraction of sage extracts. Pdf comparison of antioxidant properties of phenolic.
A theoretical study of the antioxidant properties of phenolic acid amides investigated through the radicalscavenging and metal chelation mechanisms. Plant polyphenols as dietary antioxidants in human health. Content of phenolic compounds and antioxidant properties of fruits of selected orchard shrub species article pdf available in modern phytomorphology 3. Jul 25, 2018 the sources of these compounds in the human diet include mainly fruit and good quality fruit juices, which may contain polyphenols but also other phytochemicals such as vitamin c. Phenolic compounds of wheat their content, antioxidant. Beside the quantitative content of phenolic compounds, the qualitative content is also important. Influence of a selenium biofortification on antioxidant. There has been a great interest in phenolic compounds and their antioxidant activity among consumers and the scientific community in the past. This study aimed to evaluate the effects of different drying methods on phenolic compounds and antioxidant properties of lemon myrtle leaves to identify the most suitable drying conditions. Pdf antioxidant properties of free, soluble ester and.
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