电子鼻对玉米黄浆品质的监测.PDF

中国农学通报 2013,29(27):210-214 Chinese Agricultural Science Bulletin 电子鼻对玉米黄浆品质的监测 吴晓萌，郭雪松，黄晓杰 （辽宁医学院，辽宁锦州121000） 摘 要：为了对玉米黄浆进行长时间检测估测出玉米黄浆保质期，采用电子鼻PEN3 对玉米黄浆挥发性 物质进行检测，运用主成分分析(PCA)、线性鉴别分析(LDA)研究室温和冷藏保存的玉米黄浆变质程度， 结果表明：室温保存的样品，每日测量第4 天发生略微变质，7 天发生严重变质；冷藏样品，每周检测，在 轻微变质后每天进行检测，在第28 天发生轻微变质，第39 天发生严重变质。 关键词：电子鼻；玉米黄浆；保质期 中图分类号：G3 文献标志码：A 论文编号：2013-1429 Survey Quality of Corn Gluten by Gas Sensor Wu Xiaomeng, Guo Xuesong, Huang Xiaojie (FoodScienceandProgrammeInstituteofLiaoningMedicalUniversity, Jinzhou Liaoning 121000) Abstract: In order to assess corn gluten shelf life for a long time. The determination of corn gluten volatile matter to carry on the analysis by the electronic nose PEN3, using principal component analysis (PCA), linear discrimination analysis (LDA) detection estimate corn gluten shelf life for long time which divided into room temperature and refrigerated storage. The results showed that: room temperature samples sampling every day. occurring slightly metamorphic at the 4th day, occurring heavily metamorphic at the 7th day. Room temperature samples sampling every day, take sample 5 mL every week which stored refrigerated occurring slightly metamorphic at the 28th day, occurring heavily metamorphic at the 39th day. Key words: electronic nose; corn gluten; quality guarantee period 0 引言 器和识别模式系统进行快速提供被测样品和对应传感 [6-9] 随着高科技的发展，仪器分析逐渐涉入到感官评 器得到了相关分析内容，指示样品的隐含特征 。这 [1-2] 价中 ，代替了某些人的评价，减少了评价误差，通过