地木耳活性成分的提取及其护肤功效研究

摘要

为探索天然植物提取物美容护肤的功效，研究了地木耳 Nostoc commune Vauch．（普通念珠藻）醇提物和水提物的抗氧化、保湿和防晒效果。结果表明，地木耳提取物对羟自由基（·OH）和过氧化氢（H2 O2）具有良好的清除能力，且失水率低、紫外线吸收能力强，具有良好的抗氧化、保湿和紫外线防护效果。不同品系地木耳的提取物在抗氧化、保湿和抗紫外线效果上无显著性差异，醇提物的效果略优于水提物。%In order to explore the cosmetic effect of natural plant extracts,the antioxidant activity,moisturizing and sun-screening effects of water and ethanol extracts of Nostoc commune Vauch.were studied.The results showed that the extracts from N .commune Vauch.had remarkable function of scavenging ·OH and H2 O2 in vitro ,the rate of water loss was low and the ability of ultraviolet absorption was intense,which indicated that N .commune Vauch.had positive function on the antioxi-dant activity,moisturizing and sun-screening effects.In addition,the extracts from various strains had no significant differ-ences on the antioxidant activity,moisturizing and anti-ultraviolet function.The effects of ethanol extracts were stronger than those of water extracts.