从多酚看不同颜色的燕麦的区别

创作:兵兵 审核:JIAN 剑 07月11日
测定了20种不同壳色的燕麦,发现了28种可溶性酚酸、10种结合酚类;结合酚含量是游离酚的10倍。
与去壳燕麦相比,燕麦壳的可溶性酚类和结合酚含量都要高,抗氧化能力更强。
燕麦壳可溶酚的DPPH清除能力与结合酚相当;但去壳燕麦可溶酚的DPPH清除能力要比结合酚高20-50倍。
黑壳燕麦的可溶酚和结合酚含量比白燕麦高;红壳燕麦则与其他颜色相当。
春季生燕麦与冬季种植的燕麦不同。
延伸阅读
Food Chemistry [IF:4.946]

Phenolic composition and antioxidant activity of colored oats

彩色燕麦的酚类组成及其抗氧化活性

06-14, Article, 10.1016/j.foodchem.2018.06.035more

Abstract:
Phenolic composition and antioxidant capacity of 20 oat genotypes differing in hull color were investigated. Phenolic aldehydes, phenolic acids, avenanthramides and mono-, and diglycerides were identified in the soluble phenolic fraction of the genotypes. The bound phenolic fraction proved to be less diverse with phenolic aldehydes, phenolic acids and a ferulic acid dehydrodimer detected. Investigating the scavenging capacity of the hull and groat toward 2,2-diphenyl-1-picrylhydrazyl (DPPH), an increased antioxidant activity (AOA) of hull compared to groats and a color dependence of the hull AOA could be observed. Principal component analysis on the determined variables revealed that the black-hulled samples were different from the white ones due to their increased phenolic content detected in the hull. However, reddish-hulled varieties were grouping with the accessions of the other colored groups. In addition, a distinction between spring and winter cultivars was also observed.

First Authors:
Mónika Varga

Correspondence Authors:
Mónika Varga

All Authors:
Mónika Varga,Rebeka Jójárt,Péter Fónad,Róbert Mihály,András Palágyi