BP人工神经网络紫外分光光度法同时测定三种氨基酸  

Simutaneous Determination of Three Kinds of Amino Acid by ANN-BP Spectropotometry

作　　者：王志有[1] 于洪梅[1] 李井会[1] 臧娜[1] 王海洋[1] 

机构地区：[1]鞍山科技大学化工学院,辽宁鞍山114051

出　　处：《生物数学学报》2005年第2期240-244,共5页Journal of Biomathematics

基　　金：辽宁省教育厅资助项目(2004003)

摘　　要：应用人工BP神经网络紫外分光光度法,不经分离,同时测定了色氨酸、酪氨酸和苯丙氮酸.采用均匀实验设计法,确定了最佳网络运行参数;比较了三层和四层BP神经网络的预测能力;用预测能力较好的三层BP神经网络同时测定了复方氨基酸注射液中色氨酸、酪氨酸和苯丙氨酸,相对平均误差分别为1.09%、3.71%和2.40%.ANN-BP algorithm is applied to simultaneous determination of the tryptophan、tyrosine and phenylalanine by spectrophotomeytry without separation. The best network parameters are determined by uniform design; the ability of forecasting between three-layer network and four-layer network is compared; three-layer network that forecasted better is applied to simultaneous determination of the tryptophan 、tyrosine and phenylalanine in the compound amino acid injection without separation with satisfactory results, and relative mean errors of tryptophan、tyrosine and phenylalanine are 1.09%、3.71% and 2.40% respectively.

关 键 词：BP人工神经网络 紫外分光光度法 苯丙氮酸 酪氮酸 色氮酸 

分 类 号：Q517[生物学—生物化学] O657.32[理学—分析化学]