Stability analysis of three kinds of stilbene compounds in Morusalba L.
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摘要: 采用超高效液相色谱仪（UPLC）测定白藜芦醇、氧化白藜芦醇和桑皮苷A含量的变化,分别研究了温度、光照和酸碱度对3种化合物稳定性的影响。结果表明3种化合物在不同温度下,其有效期不同,白藜芦醇在4℃下可保存74.67年,氧化白藜芦醇在-40℃下有效期可达11.44年,而桑皮苷A在-40℃下的有效期可达3.65年。光照对3种化合物稳定性的影响效应依次为:桑皮苷A>氧化白藜芦醇>白藜芦醇;白藜芦醇、氧化白藜芦醇和桑皮苷A的最适p H分别为3.24、5.38和4.3。这些结果为3种化合物的提取、分离、储存、运输与开发利用提供了有效参考。Abstract: The factors including temperature,light,acid and alkali were used to study the stability of the three compounds. The contents of the three compounds were measured with ultra performance liquid chromatography(UPLC). The results showed that three kinds of compounds had different period of validity in different temperatures,the resveratrol could be preserved for 74.67 years in 4 ℃,oxyresveratrol and mulberroside A were valid up to 11.44 years and 3.65 years in-40 ℃ respectively. The effect of light on the stability of mulberroside A was strongest,followed byoxyresveratrol,with weakest effect for resveratrol. The optimum p H of resveratrol,oxyresveratrol and mulberroside A were 3.24,5.38 and 4.3 respectively. These results provided effective reference for the extraction,separation,storage,transportation,utilization of the three compounds.
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Keywords:
- resveratrol /
- oxyresveratrol /
- mulberroside A /
- stability /
- ultra performance liquid chromatography
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