Molecules 2011, 16(12), 10104-10122; doi:10.3390/molecules161210104
Article

Free-Radical Scavenging Properties and Reducing Power of Grape Cane Extracts from 11 Selected Grape Cultivars Widely Grown in China

Ang Zhang 1 , Yulin Fang 1,2,* email, Hua Wang 1,* email, Hua Li 1,2  and Zhenwen Zhang 1,2
1 College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China 2 Shaanxi Engineering Research Center for Viti-Viniculture, Yangling, Shaanxi 712100, China
* Authors to whom correspondence should be addressed.
Received: 13 October 2011; in revised form: 22 November 2011 / Accepted: 23 November 2011 / Published: 6 December 2011
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Abstract: Total phenolic contents (TPC), total flavonoid contents (TFC), related antioxidative and antiradical capabilities of grape cane extracts from 11 varieties (five V. vinifera cultivars and six Chinese wild grapes) widely grown in China were evaluated. Antioxidant properties were determined as DPPH and ABTS radical-scavenging abilities, superoxide anion and hydroxyl radical and hydrogen peroxide scavenging assays, as well as reducing power. Phenolic profiles of the extracts were characterized by using high-performance liquid chromatography (HPLC) techniques. All extracts exhibited strong antioxidant and effective free radical inhibition activities (EC50 values), which generally correlated negatively with TPC (r = −0.804 to −0.918) and TFC (r = −0.749 to −0.888). In comparison with gallic acid, Trolox and tert-butylhydroquinone (positive controls), most grape cane extracts showed more efficient scavenging effects toward different reactive oxygen species. HPLC analysis revealed the presence of (+)-catechin, (−)-epicatechin, and trans-resveratrol as major phenolic components in the extracts. These results suggest that grape cane extracts may serve as a potential source of natural antioxidant for food and pharmaceutical application.
Keywords: grape cane extracts; antioxidant activity; antiradical effect; phenolic compounds

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MDPI and ACS Style

Zhang, A.; Fang, Y.; Wang, H.; Li, H.; Zhang, Z. Free-Radical Scavenging Properties and Reducing Power of Grape Cane Extracts from 11 Selected Grape Cultivars Widely Grown in China. Molecules 2011, 16, 10104-10122.

AMA Style

Zhang A, Fang Y, Wang H, Li H, Zhang Z. Free-Radical Scavenging Properties and Reducing Power of Grape Cane Extracts from 11 Selected Grape Cultivars Widely Grown in China. Molecules. 2011; 16(12):10104-10122.

Chicago/Turabian Style

Zhang, Ang; Fang, Yulin; Wang, Hua; Li, Hua; Zhang, Zhenwen. 2011. "Free-Radical Scavenging Properties and Reducing Power of Grape Cane Extracts from 11 Selected Grape Cultivars Widely Grown in China." Molecules 16, no. 12: 10104-10122.

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