文档介绍：漫反射红外光谱法结合PLS测定稻谷脂肪酸值研究蒋晓杰(杭州市粮油中心检验监测站,杭州310003)摘要为了快速、简便、无污染地测定稻谷中脂肪酸含量,提出基于漫反射傅里叶变换红外光谱法(DRIFTS)和近红外漫反射光谱法(NIDRS)测定稻谷脂肪酸值快速检测方法。同时探讨了反向区间偏最小二乘法(BiPLS)对中红外光谱区域的优化效果。傅里叶变换原始光谱模型经7点平滑预处理及BiPLS优化,得到的最佳模型的R2、RMSECV、、。近红外光谱经一阶导数和多元散射校正预处理后建立最佳模型,,。在验证试验中,%,%。结果表明,DRIFTS能够更加准确检测脂肪酸值。关键词稻谷脂肪酸值近红外光谱傅里叶变换偏最小二乘法中图分类号::A文章编号:1003-0174()--DeterminationoffattyacidvalueofpaddybydiffusereflectanceinfraredspectroscopyandPLSJIANGXiaojie(HangzhouGrainandOilCenterInspectionStation,Hangzhou310003,China)Abstract:hecontentoffattyacidsinpaddyquickly,easilyandwithoutpollution,therapiddetectionmethodbasedondiffusereflectanceFouriertransforminfraredspectroscopy(DRIFTS)andnearinfrareddiffusereflectancespectroscopy(NIDRS),thereverseintervalpartialleastsquares(BiPLS),,,,%,andtherelativeerrorbetweenthepredictedv