16种常见可食花卉水提液的总多酚与总黄酮含量及其抗氧化活性

Total phenolic,flavonoid contents and antioxidant capacities of aqueous extract of 16 common edible flowers

摘要: 测定16种常见可食花卉水提液的总多酚与总黄酮含量及其抗氧化活性,并分析它们之间的相关性。FolinCiocalteu法测定总多酚含量,Na NO₂-Al Cl₃-Na OH法测定总黄酮含量,FRAP、DPPH、ABTS⁺·法测定抗氧化活性。在16种可食花卉水提液中,抗氧化活性以牡丹花、紫玫瑰、月季最强,红巧梅、茉莉花最弱。可食花卉水提液的抗氧化活性差异较大,和总多酚含量相关性强,和总黄酮含量相关性弱。

Abstract: Total phenolic,flavonoid content and antioxidant activity of aqueous extract of 16 common edible flowers were evaluated,the correlation between them were analysed. Total phenolic content was measured by Folin- Ciocalteu method,total flavonoid content was measured by Na NO_2- Al Cl_3- Na OH method,antioxidant activity was measured by FRAP,DPPH and ABTS~+·method. The strongest antioxidant activity of aqueous extract of these flowers were Paeonia suffruticosa Andrews,Rosa rugosa Thunb.( purple),Rosa chinensis Jacq.,while the weakest were Gomphrena globosa Linn.,Jasminum sambac( L.) Ait.Correlations between total phenolic content and antioxidative activity of edible flowers was large,while non- correlations between total flavonoid content and antioxidative activity was observed.