香椿叶中提取槲皮素的稳定性研究

研究了槲皮素溶液稳定性的影响因素。结果表明，槲皮素溶液在pH=6．59～7．90条件下比较稳定；在还原剂Na2SO3,NaS2O3中不稳定，而在氧化剂H2O2中较为稳定；碳水化合物对槲皮素溶液的稳定性没有明显的影响；金属离子K^＋、Ca^2＋、Na^＋、Al^3＋对槲皮素溶液具有稳定作用，Mg^2＋、Zn^2＋、Fe^3＋对槲皮素溶液的稳定性有不利的影响；高温、自然光照射对槲皮素具有降解作用。

RESEARCH ON STABILITY OF QUERCETIN OF CHINESE TOON

This thesis mainly focus on impact fact in quercetin solution stability . Base on result indication, the pH value of quercetin solution are stable well between pH 6.59 and 7.90; it is not stable in the reducing agent solution of Na2SO3 or Na2S203, and that is stable in oxidant of H202 ;at meantime there are not significant issue from carbohydrate; it is stable around metal ion of K+, Ca2+, Na+, Al3+ condition, but it is unstable around metal ion of Mg2+, Zn2+, Fe3+ condition; the quercetin solution will be decompose action by high temperature and natural light irradiate directly.