evaluation of the antioxidant properties of ascorbic acid

[evaluation of prooxidant properties of ascorbic acid].

[Evaluation of prooxidant properties of ascorbic acid].

[Evaluation of prooxidant properties of ascorbic acid]. [Article in Russian] Ivanova IP, Trofimova SV, Piskarev IM. Chemiluminescence of ascorbic acid in Fenton solution was investigated at acid concentration from 10(-7) to 1 mol/l.

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ascorbic acid: the chemistry underlying its antioxidant

Ascorbic acid: The chemistry underlying its antioxidant

Ascorbic acid or vitamin C is popularly acclaimed as a potent antioxidant and free-radical scavenger [1.2], yet the chemical basis for its remarkable behavior is poorly or even misunderstood. Crucial to the free-radical scavenging properties of ascorbic acid is the nature of the fully oxidized species, dehydroascorbate (Fig. 1, AH 2 O).

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evaluation of the antioxidant and antibacterial properties of

Evaluation of the antioxidant and antibacterial properties of

The antioxidant activities of A. squamosa L. leaves extracts and BHT expressed as (μmol of ascorbic acid/g extract) are given in Table 2.The different extracts exhibited significantly different (P < 0.05) antioxidant activities that were found to be in the following order: BHT > acetone extract > methanol extract > ethanol extract > water extract.

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(pdf) evaluation of antioxidant property of three herbal

(PDF) Evaluation Of Antioxidant Property Of Three Herbal

study was to evaluate the antioxidant property of Amla, Rosemary and their combination as well as compare it with that of. ascorbic acid. Materials and Methods: Separate extracts of Amla and

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synthesis, antimicrobial and antioxidant evaluation with in

Synthesis, antimicrobial and antioxidant evaluation with in

The calculated IC 50 values of ascorbic acid and compounds 2a-2s were obtained from concentration-inhibition curves and are tabulated in Table 2. The standard (ascorbic acid) has antioxidant activity with IC 50 value of 27.34 ± 1.86 µg/mL. The IC 50 values fluctuates according to the nature of employing substituents.

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united states department of agriculture agricultural

United States Department of Agriculture Agricultural

108 Ascorbic acid is often included in food products as a preservative. Preservative applications of ascorbic 109 acid make use of its antioxidant properties to prevent discoloration in a range of processed products and to 110 protect from spoilage in lipid-based products (e.g., food oils) (Pizzocaro et al. 1993, Frankel 1996,

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vitamin c as an antioxidant: evaluation of its role in

Vitamin C as an antioxidant: evaluation of its role in

Vitamin C in humans must be ingested for survival. Vitamin C is an electron donor, and this property accounts for all its known functions. As an electron donor, vitamin C is a potent water-soluble antioxidant in humans. Antioxidant effects of vitamin C have been demonstrated in many experiments in v …

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evaluation of the antioxidant properties and determination of

EVALUATION OF THE ANTIOXIDANT PROPERTIES AND DETERMINATION OF

Reducing Antioxidant Power (FRAP) assay as well as determination of total phenolic content. The results were compared with that of a standard antioxidant. Both the n-hexane and DCM extracts of the P. nitida parts exhibited good antioxidant activity, although the activity was not comparable with that of the standard - ascorbic acid.

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ascorbic acid: the chemistry underlying its antioxidant

Ascorbic acid: The chemistry underlying its antioxidant

Ascorbic acid or vitamin C is popularly acclaimed as a potent antioxidant and free-radical scavenger [1.2], yet the chemical basis for its remarkable behavior is poorly or even misunderstood. Crucial to the free-radical scavenging properties of ascorbic acid is the nature of the fully oxidized species, dehydroascorbate (Fig. 1, AH 2 O).

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(pdf) evaluation of antioxidant property of three herbal

(PDF) Evaluation Of Antioxidant Property Of Three Herbal

study was to evaluate the antioxidant property of Amla, Rosemary and their combination as well as compare it with that of. ascorbic acid. Materials and Methods: Separate extracts of Amla and

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ascorbic acid | hc6h7o6 - pubchem

Ascorbic acid | HC6H7O6 - PubChem

Ascorbic Acid is a natural water-soluble vitamin (Vitamin C).Ascorbic acid is a potent reducing and antioxidant agent that functions in fighting bacterial infections, in detoxifying reactions, and in the formation of collagen in fibrous tissue, teeth, bones, connective tissue, skin, and capillaries.

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synthesis, antimicrobial and antioxidant evaluation with in

Synthesis, antimicrobial and antioxidant evaluation with in

The calculated IC 50 values of ascorbic acid and compounds 2a-2s were obtained from concentration-inhibition curves and are tabulated in Table 2. The standard (ascorbic acid) has antioxidant activity with IC 50 value of 27.34 ± 1.86 µg/mL. The IC 50 values fluctuates according to the nature of employing substituents.

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united states department of agriculture agricultural

United States Department of Agriculture Agricultural

108 Ascorbic acid is often included in food products as a preservative. Preservative applications of ascorbic 109 acid make use of its antioxidant properties to prevent discoloration in a range of processed products and to 110 protect from spoilage in lipid-based products (e.g., food oils) (Pizzocaro et al. 1993, Frankel 1996,

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evaluation of antioxidant properties of 20 medicinal plant

Evaluation of antioxidant properties of 20 medicinal plant

Gallic acid and L-ascorbic acid were the reference compounds in expressing the polyphenol content and the antioxidant activities by the three assays, respectively. The total polyphenol content varied from 1.84 to 26.25 mgGAE /gm.

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evaluation of the antioxidant properties of litchi fruit

Evaluation of the Antioxidant Properties of Litchi Fruit

compared with those of ascorbic acid and BHT in Figure 5. At 50 µg/mL the litchi phenolics exhibited the strongest superoxide anion scavenging activity, compared to ascorbic acid and BHT, with values of 28.30 %, 12.42 % and 13.25 %, respectively. Inhibitory effects of deoxyribose degradation

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evaluation of the antioxidant properties and determination of

EVALUATION OF THE ANTIOXIDANT PROPERTIES AND DETERMINATION OF

Reducing Antioxidant Power (FRAP) assay as well as determination of total phenolic content. The results were compared with that of a standard antioxidant. Both the n-hexane and DCM extracts of the P. nitida parts exhibited good antioxidant activity, although the activity was not comparable with that of the standard - ascorbic acid.

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in vitro evaluation of antioxidant activity of cordia

In vitro evaluation of antioxidant activity of Cordia

Ascorbic acid was used as the standard drug for the determination of the antioxidant activity by DPPH method. The concentration of ascorbic acid varied from 1 to 60 μg/mL. Ascorbic acid at a concentration of 10 μg/mL exhibited a percentage inhibition of 52.74% and for 60 μg/mL 99.86% [Table 1]. The IC50 value of ascorbic acid was less than

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synthesis, antimicrobial and antioxidant evaluation with in

Synthesis, antimicrobial and antioxidant evaluation with in

The calculated IC 50 values of ascorbic acid and compounds 2a-2s were obtained from concentration-inhibition curves and are tabulated in Table 2. The standard (ascorbic acid) has antioxidant activity with IC 50 value of 27.34 ± 1.86 µg/mL. The IC 50 values fluctuates according to the nature of employing substituents.

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antioxidant properties of ascorbic acid in bulk oils at

Antioxidant properties of ascorbic acid in bulk oils at

The effects of relative humidity (RH) on the antioxidant properties of ascorbic acid (10, 20, 42, and 84 ppm) were investigated in stripped corn oils stored at 60 °C. The degree of oxidation in oils was determined by analysing headspace oxygen content and conjugated dienoic acids. The oxidative stability of bulk oils without addition of

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evaluation of the targeted delivery of 5-fluorouracil and

Evaluation of the targeted delivery of 5-fluorouracil and

The results indicated that the time-course pharmacodynamics of ascorbic acid evaluated by examining its antioxidant capacity supported the time-course pharmacokinetics. Additionally, to strengthen the evidences of our evaluation, we varied the effect of BLs dose and duration and intensity of ultrasound irradiation on drug delivery.

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(pdf) evaluation of antioxidant properties of pomegranate

(PDF) Evaluation of antioxidant properties of pomegranate

Evaluation of antioxidant properties of pomegranate peel extract. tal ascorbic acid, including dehydroascorbic acid, in. fruits, vegetables and derived products was followed

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comparative evaluation of the antioxidant potential of

Comparative Evaluation of the Antioxidant Potential of

The total antioxidant activity ranged from 10.8 to 119.7 m M of ascorbic acid equivalents in C. gigantea and A. vera extracts respectively. However the total antioxidant activity of greater celandine was 90.06 m M and of Garcinia indica was 47.0 m M of ascorbic acid equivalents 1, 14.

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evaluation of antioxidant, cytotoxic, thrombolytic and

Evaluation of antioxidant, cytotoxic, thrombolytic and

MERP and Ascorbic acid as standard is represented in figure 2(B). The scavenging activity increased with increasing the concentrations of test materials. In lower concentration, MESP and MERP exhibited the lower scavenging properties when compared with vitamin C but in higher concentration showed greater scavenging properties than the standard.

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