红缨合耳菊防晒成分的提取及其性能

Sunscreen ingredients of synotis erythopappa(Bur.et Franch)C.Jeffey et Y.L.Chen and its application in sun cream

红缨合耳菊属于西藏特有的菊科植物,具有潜在的美白及防晒效果。本文选择水、正己烷、乙醚和乙醇为溶剂,考察4种萃取溶剂提取液的紫外吸收效果,并结合最佳萃取溶剂,考察不同提取工艺对红缨合耳菊防晒成分提取率的影响。结果表明,采用超声波提取工艺,以乙醇为萃取溶剂效果最佳,整体提取率为27%。采用气质联用仪(GC-MS)对红缨合耳菊提取液成分进行分析,研究发现提取物中含有较多的共轭双键体系化合物,这些化合物分别是3-亚甲基-6-(1-甲基乙基)环己烯、蒎烯、环己烯等,带有共轭双键体系的化合物具有较强的紫外吸收效果。将红缨合耳菊提取液制成防晒霜,发现含有质量分数2.5%的红缨合耳菊提取物防晒霜在UVB(290~320nm)段紫外线区具有很好的紫外线防护功能,平均吸光度值为1.95。

Synotis erythopappa （Bur.et Franch） C. Jeffeyet Y. L. Chen, as an endemic compositae in Tibete, has potential benifits in whitening and sun blocking. In this paper, four different solvents （water, hexane, aether and alcohol） were used to extract the plant, respectively. The extraction was investigated by testing actual UV absorbtion value. Using the best extract solvent, different extract technologies were used to evaluate the effectiveness of the extraction. The results showed thatethanol, as the extract solvent and combing with ultrasonic extraction technology, the exctraction rate was up to 27%. Gas chromatographymass spectrometer （GC-MS） was used to analyze the sun block components from extract solvent. It was found that 3-methylene-6-（1-methyl ethyl） cyclohexene, cyclohexene, pinene, myrcene, with conjugated double bonds could absorb ultraviolet. With the synotis erythopappa（Bur.et Franch）C.Jeffey et Y.L. Chen extract as a sunscreen ingredient, it was found sunscreen with 2.5% mass fraction of synotis erythopappa （Bur.et Franch） C. Jeffey et Y.L.Chen had very good UV protection in UVB （290--320nm） ultraviolet region, and the average absorbance value was 1.95.