Novel Antioxidants Isolated from<i>Perilla frutescens</i>Britton var.<i>crispa</i>(Thunb.)
作者:Tada Masahiro、Matsumoto Risa、Yamaguchi Harutaka、Chiba Kazuhiro
DOI:10.1271/bbb.60.1093
日期:1996.1
Two novel antioxidants (vinyl caffeate and trans-p-menth-8-en-7-yl caffeate) and seven known antioxidants (3,4-dihydroxybenzaldehyde, methyl 3,4-dihydroxy-benzoate, methyl caffeate, 3′,4′,5,7-tetra-hydroxy-flavone, caffeic acid, 6,7-dihydroxycoumarin, and rosmarinic acid) were isolated from Perilla frutescens Britton var. crispa (Thunb.). The redox potentials of the novel isolated antioxidative compounds were comparable to those of known antioxidants. trans-p-menth-8-en-7-yl caffeate was effective to prevent the oxidative degradation of perillaldehyde in the essential oil of P. frutescens.
两种新型抗氧化剂(乙烯基咖啡酸酯和反式对薄荷-8-烯-7-基咖啡酸酯)和七种已知抗氧化剂(3,4-二羟基苯甲醛、3,4-二羟基苯甲酸甲酯咖啡酸甲酯、3′,4′,5,7-四羟基黄酮、咖啡酸、6,7-二羟基香豆素和迷迭香酸)。crispa(Thunb.)新分离的抗氧化化合物的氧化还原电位与已知的抗氧化剂相当。反式对薄荷-8-烯-7-基咖啡酸酯能有效防止紫苏精油中紫苏醛的氧化降解。