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不同外部环境条件对测定茶多酚影响的研究

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摘要 在分析测试茶多酚时,通过添加不同pH值的磷酸盐缓冲液,会影响茶多酚的ABS(吸光度)。实验表明,添加pH7.5磷酸盐缓冲液时,溶液最稳定,分光光度时偏离最小,分析的结果最接近准确结果。另外还进行了太阳散射光对分光光度法测试茶多酚影响的实验。结果表明,太阳散射光对茶多酚的ABS产生影响,使其偏离朗伯—比耳定律,最终影响结果。散射光越强,被测样品浓度越高,影响越大。
出处 《福建茶叶》 2008年第4期22-23,25,共3页 Tea in Fujian
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