DOI：10.13746/j.njkj.2023216作者简介：陈茂飞（1992-），男，助理工程师，本科，研究方向为白酒检测。通讯作者：李代鑫（1989-），男，助理工程师，本科，研究方向为白酒酿造。酱香型白酒酒醅中近红外快速检测乳酸的模型构建陈茂飞1，焦富1，袁进1，李巧玉1，2，聂叶1，李代鑫1*（1.贵州茅台酒股份有限公司，贵州仁怀564500；2.贵州省酿酒工程技术研究中心，贵州仁怀564500）摘要：为实现酱香型白酒酒醅中乳酸的快速检测，通过采集酱香型白酒酒醅中乳酸的近红外光谱信息，经数学求导、散射、平滑等光谱预处理方式，构建了酱香型白酒酒醅中乳酸近红外快速检测模型。结果表明，模型预测标准差（SEP）为0.054，线性回归斜率为0.986，相关系数（RSQ）为0.977。对不同样品的十次平行测定，相对标准偏差(RSD)在2.89%以内。说明预测模型稳定，准确度高，重复性较好。将该模型用于酱香型白酒酒醅中乳酸含量的检测，可在2min内得出数据，检测效率得到显著提升。关键词：酱香型白酒；酒醅；乳酸；快速检测；近红外模型构建中图分类号：TS262.3；TS261.7文献标识码：A文章编号：1001-9286（2023）09-0075-06ConstructionofNear-InfraredModelforRapidDetectionofLacticAcidinFermentedGrainsofJiangxiangBaijiuCHENMaofei1,JIAOFu1,YUANJin1,LIQiaoyu1,2,NIEYe1andLIDaixin1*(1.KweichowMoutaiCo.Ltd.,Renhuai,Guizhou564500;2.GuizhouBrewingEngineeringTechnologyResearchCenter,Renhuai,Guizhou564500,China)Abstract:InordertorealizetherapiddetectionoflacticacidinthefermentedgrainsofJiangxiangBaijiu,anear-infraredmodelwasconstructedbycollectingthenear-infraredspectralinformationoflacticacidinthefermentedgrainsofJiangxiangBaijiu.Throughspectralpreprocessingmethodssuchasmathematicalderivation,scattering,andsmoothing,themodelwasconstructed.Theresultsshowedthatthestandarddeviationofmodelprediction(SEP)was0.054,theslopeoflinearregressionwas0.986,andthecorrelationcoefficient(RSQ)was0.977.Fortenparalleldeterminationsofdifferentsamples,therelativestandarddeviation(RSD)waswithin2.89%,indicatingthatthemodelwasstable,withhighaccuracyandgoodrepeatability.ThemodelwasusedtodetectthelacticacidcontentinthefermentedgrainsofJiangxiangBaijiu,andthedatacouldbeobtainedwithin2minutes,whichsignificantly...
