The main functional components in the leaves of eucommia are pinoresinol diglucoside, aucubin, kaempferol, quercitinand chlorogenic acid.

杜叶主要成分有松脂醇糖甙、桃叶珊瑚甙、山柰黄素、皮素、绿酸。

In storage, the influence of antioxcidant to acid value of eucommia crude oil was faintish and the influence of freshness degree of seeds was notable.

贮藏过程中，杜的酸值受抗氧化剂的影响较小，受杜种子新鲜程度的影响较大。