Comparison of antioxidant activity of wine phenolic compounds and metabolites in vitro

Villaño, Débora; Fernández-Pachón, María-Soledad; Troncoso, Ana M.; García‐Parrilla, M. Carmen

doi:10.1016/j.aca.2005.02.016

Cited by 194 publications

(158 citation statements)

References 38 publications

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“…This measurement is based upon the in situ generation of superoxide anion radical, which was generated by one electron reduction of the commercial molecular oxygen (O 2 ) dissolved in DMF at room temperature (25 ±1 °C). The cyclic voltammogram of superoxide anion radical showed one electron reversible process having well developed and clear oxidation and reduction peaks with peak separation (ΔEp) value of 66 ±3 mV, well in agreement with the reported data [12][13][14][15][16] Fig. 1.…”

Section: Resultssupporting

confidence: 79%

Development of an Electrochemical Method for the Measurement of Antioxidant Capacity of Pure Compounds and Natural Substances Extracts

Lanez

Rebiai

2013

ILCPA

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A new method has been developed to measure total antioxidant activity of antioxidants in foods and natural substances without use of standard antioxidants and without use of calibration curves plotting. It is based on measuring the oxidation peak current of superoxide anion radical electrochemically generated by reduction of commercial molecular oxygen in dimethylformamide. The method has been validated using 7 known standard antioxidants and the results have been compared with those obtained by the DPPH and molybdate ion reduction assays. Measured antioxidant capacities were highly correlated with those obtained using DPPH (r 2 = 0.549) and molybdate ion reduction assay (r 2 = 0.434).

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Section: Resultssupporting

confidence: 79%

Development of an Electrochemical Method for the Measurement of Antioxidant Capacity of Pure Compounds and Natural Substances Extracts

Lanez

Rebiai

2013

ILCPA

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“…Additionally, the ortho-dihydroxy structure on the B-ring, the 2-3-double bound conjugated with a 4-oxo function in the C-ring, and the free hydroxyl groups in position 3 in the C-ring and position 5 in the A-ring are important structural features for flavonoids [13]. This may explain the relatively high antioxidant activity of quercetin among flavonols, while the glycosylation of hydroxyl substituents on C3 will drop the antioxidant activity when compared to the aglycon [51]. Conjugated double bounds in combination with a planar molecular structure of quercetin allow for electron delocalization across the molecule, thus stabilizing the corresponding phenoxyl radicals [52].…”

Section: Phenolics As Antioxidant Agentsmentioning

confidence: 94%

Characterization of an Antioxidant-Enriched Beverage from Grape Musts and Extracts of Winery and Grapevine By-Products

et al. 2018

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Abstract:The recovery of antioxidants from complex winery and grapevine by-products into Vitis vinifera must offers new opportunities for wine grapes by the development of a new, enriched fruit juice. However, this demands the search for new valorization methods to get hold of additional antioxidant compounds. The objective of this study was to find a novel functionality for grape pomace, grapevine leaves, and canes by its reuse as a functional matrix for the extraction of antioxidants into grape must. After thermomaceration, 22 polyphenols were identified by high performance liquid chromatography and mass spectrometry. Grape pomace was a good source of anthocyanins (malvidin-3-glucoside), while flavonols (quercetin-3-hexoside) and phenolic acids (caftaric acid) were the main phenolic compounds in leaf extracts. Catechin dimer was the only polyphenol compound present in all of the matrices. Enriched grape juice comprised by 40:20:40 (v/v/v) of pomace, leaf, and cane extracts, yielded an oxygen radical absorbance capacity of pirogallol red and fluorescein ratio of 0.70, indicating that the reactivity of antioxidants present in enriched grape juice was at least as efficient as other polyphenol-rich beverages. Thus, pomace, leaves and canes supply additional polyphenols to grape must that results into a beverage with promissory antioxidant activity and potential health benefits.

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“…61 In phenolic acids, the freer -OH groups in the ring shows the larger TEAC (Trolox Equivalent Antioxidant Capacity) value is with ABTS and ORAC methods. 62 By looking at this mechanism higher phenolic content was resulted with the methanolic extracts of both the samples and hence antioxidant results also proportionally increased with respect to total phenolics contents. Fresco et al, (2006), 63 reported that phenolics are powerful antioxidants and act in a structure-dependent manner; they can scavenge reactive oxygen species, and chelate transition metals which play vital roles in the initiation of deleterious free radical reactions.…”

Section: Total Phenolic Content and Antioxidant Studiesmentioning

confidence: 99%

nfluence of Metals In Soil on The Comparative Phyto chemical Characterization and Antioxidant Study of Indian Golden Shower (Cassia Fistula)

Das¹,

Dang²,

Sutar³

et al. 2016

IJPER

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Objective: This paper highlighted the effect of selected soil containing metals, viz. Cd, Cr, Cu, Fe, Ni, Pb and Zn on the biochemical compositions and antioxidant activity in leaf of 20 years old two Cassia fistula L. (CF) cultivars. The leaf samples were collected from CF grown on road sides from the states of Maharashtra and Karnataka in India. Methods: Antioxidant activity and total phenol contents from methanolic and aqueous leaf extract were evaluated by assays like oxygen radical absorbance capacities (ORAC), 2, 2 / -Azino-bis (3-ethylbenzothiozoline-6-sulphonic acid) diammonium salt (ABTS) and folin-ciocalteu reagent methods respectively. Maximum dose dependent antioxidant activity was observed in methanol leaf extract of both the cultivars, but marginal variation observed in antioxidant activity. Results: The result revealed that total phenolic content was maximum in the methanolic leaf extract (11.40 ± 0.37 mg g −1 of gallic acid equivalent). A positive correlation between antioxidant activity and total phenol compounds was noticed from both the samples. Furthermore a significant correlation was observed between element contents and antioxidant activities. Conclusion: This was may be due to elements like Fe, Cu, and Zn for accumulation of secondary constituents in the methanolic leaf extract that are major contributors to the antioxidant potential of CF. There were no other heavy metals (Ni, Cd, Pb and Cr) reported in both the samples.

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Comparison of antioxidant activity of wine phenolic compounds and metabolites in vitro

Cited by 194 publications

References 38 publications

Development of an Electrochemical Method for the Measurement of Antioxidant Capacity of Pure Compounds and Natural Substances Extracts

Development of an Electrochemical Method for the Measurement of Antioxidant Capacity of Pure Compounds and Natural Substances Extracts

Characterization of an Antioxidant-Enriched Beverage from Grape Musts and Extracts of Winery and Grapevine By-Products

nfluence of Metals In Soil on The Comparative Phyto chemical Characterization and Antioxidant Study of Indian Golden Shower (Cassia Fistula)

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