摘要
[目的]探究电子束及紫外辐照对远志中黄曲霉毒素的降解率及有效成分的影响.[方法]利用高效液相色谱法研究不同辐照剂量的电子束、不同含水量、不同时间的紫外辐照对远志中黄曲霉毒素的降解率及有效成分的影响.[结果]电子束辐照剂量越大,远志中黄曲霉毒素的降解率越高.经10 kGy电子束辐照处理,远志中黄曲霉毒素AFB1、AFB2、AFG1、AFG2的降解率分别为19.27％、19.64％、15.62％、15.14％;6 kGy辐照处理含水量28％的远志中AFB1、AFB2、AFG1、AFG2的降解率均最高;紫外辐照时间越长,远志中黄曲霉毒素的降解率越高.黄曲霉毒素的降解率随着辐照距离的增加而减小.经不同辐照处理后远志中细叶远志皂苷、远志口三酮、3,6′-二芥子酰基蔗糖含量变化不显著.[结论]采用电子束辐照结合调整远志含水量及紫外辐照处理均能对远志中黄曲霉毒素进行有效降解,且对有效成分影响不大.
Abstract
[Objective]To investigate the effect of electron beam and ultraviolet irradiation on the degradation rate and active components of af-latoxin in Polygala tenuifolia.[Method] High performance liquid chromatography was used to study the effects of different irradiation doses of electron beams, different water contents and different durations of ultraviolet radiation on the degradation rate and active components of aflatox-in in Polygala.[Result]The higher the electron beam irradiation dose, the higher the degradation rate of aflatoxin in Polygala.After 10 kGy e-lectron beam irradiation, the degradation rates of aflatoxins AFB1, AFB2, AFG1, and AFG2 in Polygala tenuifolia were 19.27％, 19.64％, 15.62％, and 15.14％, respectively.The degradation rates of AFB1, AFB2, AFG1 and AFG2 were the highest in polygala with 28％ water content treated with 6 kGy irradiation.The longer the UV irradiation time, the higher the degradation rate of aflatoxin in polygala.The degra-dation rate of aflatoxins decreased with the increase of irradiation distance.There was no significant change in the contents of tenuifolin, polyg-altrione and 3,6′-sinaloyl sucrose after different irradiation treatments.[Conclusion]Electron beam irradiation combined with water content treated and ultraviolet irradiation can effectively degrade aflatoxins in polygala, and has little effect on active components.
国家科技期刊平台
NSTL
万方数据