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Antioxidant activity of South African red and white cultivar wines: free radical scavenging.
J Agric Food Chem 2003; 51(4):902-9JA

Abstract

The free radical scavenging activity of South African red (n = 46) and white (n = 40) cultivar wines was determined using 2,2'-azinobis(3-ethylbenzothialozinesulfonic acid) radical cations (ABTS(.+)) and 2,2-diphenyl-1-picrylhydrazyl radicals (DPPH.). The total antioxidant activities (TAA) of red and white wines using ABTS(.+) were 14.916 and 0.939 mM Trolox, respectively, at corresponding total phenol (TP) contents of 2339.0 and 273.8 mg of gallic acid equiv/L. Ruby Cabernet wines had the lowest TAA(ABTS) (13.177 mM Trolox) of the red wines, whereas the TAA(ABTS) values of Chardonnay and Chenin blanc wines were the highest (1.060 mM Trolox) and lowest (0.800 mM Trolox) of the white wines. The TAA(DPPH) values were of the same magnitude as the TAA(ABTS) values, and similar trends were observed. TAA correlated (P < 0.001) with total phenol content of red (r = 0.935) and white (r = 0.907) wines, as well as flavanol content of red wines (r = 0.866) and tartaric acid ester content of white wines (r = 0.767). Canonical discriminant analysis using phenolic composition and antioxidant activity was applied to differentiate between red and white cultivar wines.

Authors+Show Affiliations

Department of Food Science, University of Stellenbosch, Private Bag X1, 7602 Matieland (Stellenbosch), South Africa.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12568547

Citation

De Beer, Dalene, et al. "Antioxidant Activity of South African Red and White Cultivar Wines: Free Radical Scavenging." Journal of Agricultural and Food Chemistry, vol. 51, no. 4, 2003, pp. 902-9.
De Beer D, Joubert E, Gelderblom WC, et al. Antioxidant activity of South African red and white cultivar wines: free radical scavenging. J Agric Food Chem. 2003;51(4):902-9.
De Beer, D., Joubert, E., Gelderblom, W. C., & Manley, M. (2003). Antioxidant activity of South African red and white cultivar wines: free radical scavenging. Journal of Agricultural and Food Chemistry, 51(4), pp. 902-9.
De Beer D, et al. Antioxidant Activity of South African Red and White Cultivar Wines: Free Radical Scavenging. J Agric Food Chem. 2003 Feb 12;51(4):902-9. PubMed PMID: 12568547.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant activity of South African red and white cultivar wines: free radical scavenging. AU - De Beer,Dalene, AU - Joubert,Elizabeth, AU - Gelderblom,Wentzel C A, AU - Manley,Marena, PY - 2003/2/6/pubmed PY - 2003/3/26/medline PY - 2003/2/6/entrez SP - 902 EP - 9 JF - Journal of agricultural and food chemistry JO - J. Agric. Food Chem. VL - 51 IS - 4 N2 - The free radical scavenging activity of South African red (n = 46) and white (n = 40) cultivar wines was determined using 2,2'-azinobis(3-ethylbenzothialozinesulfonic acid) radical cations (ABTS(.+)) and 2,2-diphenyl-1-picrylhydrazyl radicals (DPPH.). The total antioxidant activities (TAA) of red and white wines using ABTS(.+) were 14.916 and 0.939 mM Trolox, respectively, at corresponding total phenol (TP) contents of 2339.0 and 273.8 mg of gallic acid equiv/L. Ruby Cabernet wines had the lowest TAA(ABTS) (13.177 mM Trolox) of the red wines, whereas the TAA(ABTS) values of Chardonnay and Chenin blanc wines were the highest (1.060 mM Trolox) and lowest (0.800 mM Trolox) of the white wines. The TAA(DPPH) values were of the same magnitude as the TAA(ABTS) values, and similar trends were observed. TAA correlated (P < 0.001) with total phenol content of red (r = 0.935) and white (r = 0.907) wines, as well as flavanol content of red wines (r = 0.866) and tartaric acid ester content of white wines (r = 0.767). Canonical discriminant analysis using phenolic composition and antioxidant activity was applied to differentiate between red and white cultivar wines. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/12568547/Antioxidant_activity_of_South_African_red_and_white_cultivar_wines:_free_radical_scavenging_ L2 - https://dx.doi.org/10.1021/jf026011o DB - PRIME DP - Unbound Medicine ER -