The measurement of SOD vigour,MDA quantity,contents of HyP and the changes of the histomorphology of the skin were by xanthinoxidase,TBA,alkaline hydrolysis and HE staining methods individually.

• 用黄嘌呤氧化酶法测定皮肤SOD活力,用硫代巴比妥酸(TBA)法测定皮肤MDA的量,用碱水解法测定皮肤HOP含量,用HE染色法观察皮肤组织形态学改变。