studies on various concentrations of antioxidants with

pH

Jul 01 2020Complexes with BRA were prepared at various concentrations of CA and the thermal and photostability of the CA-BRA complexes at various pHs (2 4 6 and 8) were compared with those of βCD-BRA complexes To our knowledge this is the first study to utilize CA for enhancing antioxidant stability of anthocyanin at various environment stresses

Anti

Basil ( Ocimum basilicum Linn ) is a plant that has found use in traditional medicine and remedy against human ailments The present study aimed at investigating hexane and ethanol fruit extracts of Ocimum basilicum Linn for their phytoconstituents and anti-inflammatory antioxidant and anthelmintic activities

Antioxidants

Anthocyanins are biologically active water-soluble plant pigments that are responsible for blue purple and red colors in various plant parts—especially in fruits and blooms Anthocyanins have attracted attention as natural food colorants to be used in yogurts juices marmalades and bakery products Numerous studies have also indicated the beneficial health effects of anthocyanins and

pH

Jul 01 2020Complexes with BRA were prepared at various concentrations of CA and the thermal and photostability of the CA-BRA complexes at various pHs (2 4 6 and 8) were compared with those of βCD-BRA complexes To our knowledge this is the first study to utilize CA for enhancing antioxidant stability of anthocyanin at various environment stresses

Antioxidative and Antimelanoma Effects of Various Tea

Tea (Camellia sinensis) contains high level of antioxidant elements and is a well-known beverage consumed worldwide The purpose of this study is to compare different concentrations of green tea black tea oolong tea 861 oolong tea 732 and jasmine green tea These five types of tea extracts were known to have antioxidative properties reducing power and metal ion chelating activity

In vitro antioxidant studies of Sphaeranthus indicus (Linn)

the study different concentrations (2- 1000 g/ml) of the ethanolic extract (0 5 ml) were added to 0 3 ml of ABTS solution and the final volume was made up with ethanol to make 1 ml The absorbance was read at 745 nm and the experiment was performed in triplicate DPPH radical scavenging activity10⎯To 1 ml of

Several Culinary and Medicinal Herbs Are Important Sources

In the present study we demonstrated that there is a greater than 1000-fold difference among total antioxidants in various herbs Of the dried culinary herbs tested oregano sage peppermint garden thyme lemon balm clove allspice and cinnamon all contained very high concentrations of antioxidants (i e 75 mmol/100 g)

Moderate

Oct 14 2019Several longitudinal studies have shown that high plasma oxLDL concentration is an independent risk factor for cardiovascular disease (CVD) (3 4) Plasma antioxidant concentrations also are an indicator of antioxidant status and have been inversely associated with CVD risk

Comparative Quantitative Study on Phytochemical Contents

The variabilities in the phytochemical contents and antioxidant activities of four varieties of two closely related cultivated Capsicum species C annuum and C frutescens were examined as an additional tool for establishing their phylogenetic relatedness and for breeding purposes The methodology involved the use of ethanolic and aqueous extractions for the determination of the

Vitamin C

A few studies in humans have examined whether bioavailability differs among the various forms of vitamin C In one study Ester-C and ascorbic acid produced the same vitamin C plasma concentrations but Ester-C produced significantly higher vitamin C concentrations in leukocytes 24 hours after ingestion [ 20 ]

An Overview of Antioxidants

Oct 17 2008Different antioxidants are present at a wide range of concentrations in body fluids and tissues with some such as glutathione or ubiquinone mostly present within cells while others such as uric acid are more evenly distributed 1 In general they either prevent the formation of free-radicals or neutralize those that are formed or repair

In vitro studies on antiradical and antioxidant activities

Jan 01 2007SOD is an important cellular antioxidant enzyme which converts superoxide radical into H 2 O 2 and O 2 We also looked for the protective effect of the seed extract on antioxidant enzyme SOD in mitochondria exposed to H 2 O 2 Table 2 gives the changes in the activity of SOD upon treatment with 100 μM H 2 O 2 in the presence and absence of the extract Upon exposure to H 2 O 2 the enzyme

Frontiers

Thus in the present study the influence of different concentrations of organic nitrogen (as glycine) on the nutritional quality (i e total polyphenol flavone vitamin C and vitamin E contents and antioxidative activity) of two lettuce cultivars was determined using a metabolomics approach and in vitro bioactivity assays This work further

Antioxidants: In Depth

Aug 30 2020High-dose antioxidant supplements may be harmful in some cases For example the results of some studies have linked the use of high-dose beta-carotene supplements to an increased risk of lung cancer in smokers and use of high-dose vitamin E supplements to increased risks of hemorrhagic stroke (a type of stroke caused by bleeding in the brain) and prostate cancer

Assessment of Vitamin and Carotenoid Concentrations of

Results showed that different microgreens provided extremely varying amounts of vitamins and carotenoids Total ascorbic acid contents ranged from 20 4 to147 0 mg per 100 g fresh weight (FW) while β-carotene lutein/zeaxanthin and violaxanthin concentrations ranged from 0 6 to 12 1 1 3 to 10 1 and 0 9 to 7 7 mg/100 g FW respectively

Investigation of Antioxidant and Antimicrobial Activities

Different concentrations of ascorbic acid (10 20 30 40 50 60 and 70 μg/mL) were prepared and used as a standard antioxidant (positive control) Radical scavenging activity was expressed as the inhibition percentage of free radical by the extracts and was calculated using the formula: % RSA = [(ADPPH-AS)/ADPPH] x100 where AS is the

ANTIOXIDANT properties and cannabis studies completed

To confirm that cannabinoids act as antioxidants in the intact cell neurons were incubated with tert-butyl hydroperoxide and varying concentrations of cannabidiol (Fig (Fig 5 5 A) The oxidant was chosen for its solubility in both aqueous and organic solvents thereby facilitating oxidation in both cytosolic and membrane cell compartments

Antioxidants

Antioxidant supplements and disease prevention: little supportive evidence Randomized placebo-controlled trials which can provide the strongest evidence offer little support that taking vitamin C vitamin E beta-carotene or other single antioxidants provides substantial protection against heart disease cancer or other chronic conditions

Antioxidative and Antimelanoma Effects of Various Tea

Tea (Camellia sinensis) contains high level of antioxidant elements and is a well-known beverage consumed worldwide The purpose of this study is to compare different concentrations of green tea black tea oolong tea 861 oolong tea 732 and jasmine green tea These five types of tea extracts were known to have antioxidative properties reducing power and metal ion chelating activity

Antioxidants

Lutein (L) zeaxanthin (Z) and meso-zeaxanthin (MZ) have been the focus of research and commercial interest for their applications in human health Research into formulations to enhance their bioavailability is merited This 6 month randomised placebo-controlled trial involving 81 healthy volunteers compared the bioavailability of different formulations of free L Z and MZ in sunflower or

Antioxidant

Antioxidants are compounds that inhibit oxidation Oxidation is a chemical reaction that can produce free radicals thereby leading to chain reactions that may damage the cells of organisms Antioxidants such as thiols or ascorbic acid (vitamin C) terminate these chain reactions To balance the oxidative stress plants and animals maintain complex systems of overlapping antioxidants such as

Effect of extraction solvent on total phenol content

Sep 01 2014Limnophila aromatica is commonly used as a spice and a medicinal herb in Southeast Asia In this study water and various concentrations (50% 75% and ) of methanol ethanol and acetone in water were used as solvent in the extraction of L aromatica The antioxidant activity total phenolic content and total flavonoid content of the freeze-dried L aromatica extracts were

Effect of different ethanolic concentrations on

The objective of this study was to evaluate the antioxidant activities of Mesona procumbens ethanolic extracts (MPEEs) which displayed variable antioxidant levels with different ethanolic concentrations Compared to MPEEs with 20 40 and 80% ethanol the 60% MPEE exhibited a higher total phenol content (TPC) total flavonoid content (TFC) 1 1-diphenyl-2-picryl hydrazyl (DPPH)- and 2 2-azino

Frontiers

Thus in the present study the influence of different concentrations of organic nitrogen (as glycine) on the nutritional quality (i e total polyphenol flavone vitamin C and vitamin E contents and antioxidative activity) of two lettuce cultivars was determined using a metabolomics approach and in vitro bioactivity assays This work further