食品与发酵工业2025，Vol.51Issue(10)：336-343,8.DOI:10.13995/j.cnki.11-1802/ts.040024
基于便携式近红外光谱的西藏风干牦牛肉产地鉴别研究
Place of origin identification for air-dried yak meat from Tibet based on portable near-infrared spectroscopy
摘要
Abstract
Place of origin is one important factor affecting the quality of yak meat.To quickly identify the place of origin of air-dried yak meat from Tibet,this study utilized a portable near-infrared spectrometer to trace the origin of air-dried yak meat samples from differ-ent Tibet regions.A total of 240 air-dried yak meat samples from 4 Tibet regions were collected,which were randomly assigned into the training set and the test set at a ratio of 3∶1.Initially,abnormal near-infrared spectra were eliminated by Mahalanobis distance,and 3 classification models,namely partial least-squares discrimination analysis,support vector machine(SVM),and random forest,were crea-ted separately using 7 pre-processing methods,including Smooth,Savitzky-Golay,standard normal variate,multiplicative scatter correc-tion,second derivative,mean centralization(MC),and de-trend.Results showed that the MC-SVM model had the optimal classification effect,with the accuracies on the training and prediction sets being 95.24％ and 91.67％,respectively.To further simplify the model,methods like competitive adaptive reweighted sampling,variable iterative space shrinkage approach,and bootstrapping soft shrinkage(BOSS)were adopted for feature wavelength screening.Through multivariate data analysis,the MC-BOSS-SVM model was found to dis-play the best effect,with the accuracies on the training and prediction sets being 88.10％ and 91.67％,respectively.This study offers a theoretical basis for rapid and non-destructive identification of the place of origin for air-dried yak meat from Tibet.关键词
便携式近红外光谱/西藏风干牦牛肉/产地鉴别/机器学习/模型建立Key words
portable near-infrared spectroscopy/Tibetan air-dried yak meat/place of origin identification/machine learning/modelling引用本文复制引用
韩沅汐,胡云,张二豪,刘振东,李梁,罗章..基于便携式近红外光谱的西藏风干牦牛肉产地鉴别研究[J].食品与发酵工业,2025,51(10):336-343,8.基金项目
西藏农牧学院研究生教育创新计划项目(YJS2023-05) （YJS2023-05）
西藏自治区中央引导地方项目(XZ202202YD0004C) （XZ202202YD0004C）
西藏农牧学院研究生教学改革建设项目(YJSJG2023-015) （YJSJG2023-015）
西藏自治区现代农业产业技术体系(XZARS-MN-2024-01) （XZARS-MN-2024-01）
