Antioxidant Activity of Pigment Extracted from Green-Wheat-Bran

来源 :Agricultural Sciences in China | 被引量 : 0次 | 上传用户:bright202
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The anthocyanin pigment extracted from green-wheat-bran was studied to identify its antioxidant activity.The antioxidant activities of the pigment were evaluated by anti-lipid peroxidation,total antioxidant activity (TAA),superoxide anion radical scavenging activity (SARSA),active oxygen scavenging activity (AOSA),and DPPH (1,1-diphenyl-2 picrylhydrazyl free radical) radical scavenging activity.The results showed that the pigment had higher antioxidant activity and TAA,SARSA,AOSA and DPPH.scavenging activities at a certain concentration than Vc (antiscorbutic vitamin,vitamin C),and the capacity increased with the increase of pigment concentration.Its TAA was 51.06 U mL-1,1.73 times of Vc,and SARSA 18 025.21 U mL-1,2.26% higher than Vc,and AOSA 3 776.31 U mL-1,1.24 times of Vc.As to the DPPH.scavenging activity of the pigment,there was a trend that higher concentration performed higher activity significantly improved with the company of Vc.The pigment showed significant antioxidant activities evaluated by different assays.Results will provide a better understanding on antioxidant activity of green wheat and allow the screening or breeding of green wheat varieties with higher antioxidant activity for food processing. The anthocyanin pigment extracted from green-wheat-bran was studied to identify its antioxidant activity.The antioxidant activities of the pigment were evaluated as anti-lipid peroxidation, total antioxidant activity (TAA), superoxide anion radical scavenging activity (SARSA), active oxygen scavenging activity (AOSA), and DPPH (1,1-diphenyl-2 picrylhydrazyl free radical) radical scavenging activity. The results showed that the pigment had higher antioxidant activity and TAA, SARSA, AOSA and DPPH .scavenging activities at a certain concentration than Vc (antiscorbutic vitamin, vitamin C), and the capacity increased with the increase of pigment concentration. Its TAA was 51.06 U mL -1, 1.73 times of Vc, and SARSA 18 025.21 U mL -1, 2.26% higher than Vc, and AOSA 3 776.31 U mL-1, .24 times times Vc.As to the DPPH. Scavenging activity of the pigment, there was a trend that higher concentration performed higher activity significantly improved with the company of Vc. Pigment-showing significant antioxidant acti vities evaluated by different assays. Results will provide a better understanding on antioxidant activity of green wheat and allow the screening or breeding of green wheat varieties with higher antioxidant activity for food processing.
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