红外技术Issue(11)：737-740,4.
基于近红外光谱对老陈醋的pH值和可溶性固形物定量与定性的检测研究
Qualitative and Quantitative Detection Research of Mature Vinegar’s pH and SSC Based on Near Infrared Spectroscopy
摘要
Abstract
Our present study is about qualitative and quantitative detection research of Shanxi mature vinegar based on near infrared spectroscopy. Firstly, near infrared spectroscopy combined with discriminant analysis (DA) was used for vinegar age through different pre-processing methods, at the same time it established the Principal components analysis(PCA) model of soluble solids content (SSC) and the effective acidity (pH). The result indicated that 100%recognition ratio for calibration and 88.89%recognition ratio for validation were achieved by DA for vinegar age. Quantitative model of the SSC which was established by original spectroscopy was the best, the correlation coefficients of calibration and prediction respectively were 0.99989 and 0.99884, RMSEC, RMSEP and RMSECV respectively were 0.0400, 0.0581 and 0.132. Quantitative model of the effective acidity (pH) by 5 points smooth have a better result. The correlation coefficients of calibration and prediction were 0.99733 and 0.97411 respectively. RMSEC, RMSEP and RMSECV were 0.0151, 0.0386 and 0.0468.关键词
近红外光谱(NIRS)/老陈醋/判别分析/主成分分析Key words
near infrared spectroscopy (NIRS)/mature vinegar/discriminant analysis (DA)/principal components analysis(PCA)分类
化学化工引用本文复制引用
蒋雪松,陆辉山,张林,闫宏伟,高强,王福杰..基于近红外光谱对老陈醋的pH值和可溶性固形物定量与定性的检测研究[J].红外技术,2013,(11):737-740,4.基金项目
江苏省自然科学基金面上项目，编号 BK2011823；江苏省高校自然科学研究项目，编号10KJB460005。 （）
