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Plants as natural antioxidants

the antioxidant activity through various in vitro models like DPPH method10, Nitric oxide method11, DMPD method12, ABTS method13, ORAC method 14, TBARS assay 15, etc. and via various in vivo models16, 17 using rats or mice. An antioxidant is any substance that, when present at low concentrations significantly delays or prevents oxidation

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Phenolic content, antioxidant and antimicrobial activity ...

Three types of mulberry fruit were screened for their total phenolic content (TPC), antioxidant and antimicrobial activity. The TPC of the aqueous extracts was determined spectrophotometrically according to the Folin- Ciocalteu method. The results

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Altered antioxidant enzyme activity with severity and ...

Mar 30, 2017 · Oxidative stress has been suggested in the pathogenesis of Chronic Obstructive Pulmonary Disease (COPD) with an additional burden of diabetes, hypertension and cardiovascular disease. In the present study, we investigated erythrocyte antioxidant enzymes activities in correlation to COPD severity and COPD comorbidities. One hundred twenty seven subjects with COPD and 59 .

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Antioxidant - Wikipedia

The term "antioxidant" is mostly used for two entirely different groups of substances: industrial chemicals that are added to products to prevent oxidation, and naturally occurring compounds that are present in foods and tissue.

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Antioxidant activity induced by main polyphenols present ...

The authors showed the antioxidant activity present in the methanolic extract, the that the antioxidant value of the sample after in vitro simu- main individual polyphenols were tested at levels present in lated digestion was higher than in non digested meal. In con- the methanolic extract of artichoke.

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Development of antioxidant activity in milk whey during ...

Jul 31, 2006 · The antioxidant activity increased in most cases during fermentation as shown in Fig. 1. A correlation (P < 0·001) between development of radical scavenging activity and DH was found with L. lactis (r = 0·96), Leuc. cremoris A (r = 0·81), Leuc. cremoris B (r = .

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In vitro study of the PLA2 inhibition and antioxidant ...

In the present work we determined the total phenolic content of Aloe vera leaf skin (AVLS) extracts by using various solvents (hexane, chloroform-ethanol (1/1), ethyl acetate, butanol and water). We have also evaluated the antioxidant and the anti-PLA2 properties of these extracts by measuring their inhibition potency on the human pro-inflammatory phospholipase A2 (group IIA).

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Antioxidant Activity of Quercetin and Its Glucosides from ...

Antioxidant Activity of Quercetin and Its Glucosides from Propolis: A Theoretical Study. ... is a typical flavonoid ubiquitously present in different kinds of propolis 12. It is characterized by ...

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Antibacterial, Antioxidant, and Anticholinesterase ...

Five extracts presented antioxidant activity, with EC50 values ranging from 69.73 μg/mL (T. gardneriana) to 487.51 μg/mL (Licania rigida). For the anticholinesterase activity, eleven extracts were capable of inhibiting the enzyme activity.

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Foods | Free Full-Text | Antihyperuricemia, Antioxidant ...

Regarding antioxidant activity, the F 48–50 fraction showed the highest radical scavenging activities both in DPPH and ABTS assays. Of which, 2-monopalmitin, glycerin, and methyl palmitate were the dominant compounds detected.

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List of 20 Foods High in Antioxidant - Fruits,Vegetables ...

May 27, 2017 · Fruits High In Antioxidant. 9) Peaches: One of the other antioxidant rich fruits, it also a great source of vitamins, minerals, and various other chemical contents. The antioxidants present in the fruit foil the growth of cancer cells, lower cholesterol level and helps in maintaining a healthy skin.

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Potent antibacterial, antioxidant and toxic activities of ...

Proanthocyanidins were observed only in the aqueous extract. Hence, aqueous and methanol extracts with most classes of phytochemicals present were subjected to antimicrobial, antioxidant, antihaemolytic activities and Brine shrimp lethality studies.

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Antioxidant activities of ethanol extracts and fractions ...

Antioxidant compounds like phenols and flavonoids scavenge free radicals and thus inhibit the oxidative mechanisms that lead to control degenerative and other diseases. The aim of this study was to investigate the antioxidant activity in vitro, total phenolic and flavonoid contents in ethanol extracts and fractions of Crescentia cujete leaves and stem bark.

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(PDF) Antioxidants and its functions in human body - A Review

Antioxidants and its functions in human body - A Review. Although initial studies suggested that antioxidant supplements might promote health, later large clinical trials of antioxidant supplements including beta-carotene, vitamin A, and vitamin E singly or in different combinations suggest that supplementation has no effect on mortality...

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Description of Various Assay Procedures for Determination ...

Description of Various Assay Procedures for Determination of Antioxidant Activity Author: Priyanka Chandra Hydrogen atom transfer (HAT) and single electron transfer (SET) Antioxidants can deactivate radicals by two major mechanisms, HAT and SET. The end result is the same, regardless of mechanism, but kinetics and potential for side reactions differ.

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Antioxidant and anticancer activities of chamomile ...

The present study aimed at determining the antioxidant activity, total phenols and flavonoids and to evaluate the antiproliferative activity of ethanolic extract of Matricaria recutita L. (chamomile). The antioxidant activities were measured using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assay.

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Antioxidant activity of food constituents: an overview ...

Nov 20, 2011 · In terms of food, an antioxidant has been defined as any substance that when present in low concentrations compared to that of an oxidizable substrate significantly delays or inhibits the oxidation of that substrate (Halliwell and Gutteridge 1989; Sies 1993; Halliwell 1995).

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Antioxidant Activity/Capacity Measurement. 1 ...

to assess oxidation and to quantify antioxidant activity), a reliable antioxidant protocol requires the measurement of more than one property relevant to either foods or biological systems.5 (v) A noteworthy question is that, if the protective action of an antioxidant is being assayed in a selected test, what

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Antioxidant activity, total phenolic and total flavonoid ...

A detailed study was performed on the antioxidant activity of the methanol extract of whole plant of Torilis leptophylla (TLM) and its derived fractions {n-hexane (TLH), chloroform (TLC) ethyl acetate (TLE) n-butanol (TLB) and residual aqueous fraction (TLA)} by in vitro chemical analyses and carbon tetrachloride (CCl4) induced hepatic injuries ( ...

  • Published in: BMC Complementary and Alternative Medicine · 2012Authors: Naima Saeed · Muhammad Rashid Khan · Maria ShabbirAffiliation: Quaid I Azam UniversityAbout: Phenols · Oxidative stress · Carbon tetrachloride · Torilis leptophylla · Internal medicineGet Price
Measurement of antioxidant activity - ScienceDirect

Kim, Yeo, Kim, Kim, and Lee (2013) presented antioxidant activity of sesamol in thermally treated lard and soybean oil by measuring changes in the ratio of total saturated fatty acids over total unsaturated fatty acids as well as the concentration of a specific fatty acid, caprylic acid in particular.