天然植物防晒作用的筛选研究

Screening Study of Natural Plants for Sunscreen Effect

关键词:  植物  紫外分光光度法  紫外吸收

Key words:  natural plant  UV spectrophotometry  UV absorption

摘要:

[目的]筛选出波长范围在200~400nm中有强紫外吸收作用的植物。[方法]分别用70%乙醇和水作溶剂,采用超声波提取法,紫外分光光度法进行检测。[结果]有35种植物提取液浓度为50g/L时有强吸收作用。醇提的甘草、金银花、红花和水提的黄芩浓度为0.5g/L时在整个紫外范围内均有强吸收作用。[结论]醇提的甘草、金银花、红花与水提的黄芩在整个紫外范围A、B、C3个波段内均有很强的吸收,具有很好的防晒作用。

Abstract:

[Objective] To select the natural plants with strong UV absorption effect at the wavelength range of 200~400 nm. [Methods] Both 70% ethanol and water was taken as solvent to detect this effect by Ultrasonic extraction and UV spectrophotometry. [Results] Extract from 35 kinds of natural plants with concentration of 50 g/L had strong UV absorption effect. Alcohol extraction of Licorice, Honeysuckle, Safflower and water extract of Baicalin at concentration of 0.000 5 g/ml had strong UV absorption effect in the whole UV range. [Conclusions] All Licorice, Honeysuckle, Safflower and Baicalin have strong absorption effect in three bands of A, B, C of the whole UV range and have good sunscreen effect.