近红外漫反射光对水果的穿透能力研究  

Studies on the Penetration Ability of Near Infrared Diffuse Light on Fruits

作　　者：张欣欣 李尚科 李跑 单杨[2] 蒋立文 刘霞 Zhang Xinxin;Li Shangke;Li Pao;Shan Yang;Jiang Liwen;Liu Xia(College of Food Science and Technology,Hunan Provincial Key Laboratory of Food Science and Biotechnology,Hunan Agricultural University,Changsha 410128;Hunan Agricultural Product Processing Institute,Hunan Academy of Agricultural Sciences,Changsha 410125)

机构地区：[1]湖南农业大学食品科学技术学院食品科学与生物技术湖南省重点实验室,长沙410128 [2]湖南省农业科学院湖南省农产品加工研究所,长沙410125

出　　处：《中国食品学报》2022年第1期298-305,共8页Journal of Chinese Institute Of Food Science and Technology

基　　金：国家自然科学基金青年科学基金项目(31601551,31671931);湖南省自然科学基金青年科学基金项目(2019JJ50240);湖南省教育厅科学研究项目优秀青年项目(18B118);中国博士后科学基金面上项目(2019M650187)。

摘　　要：基于化学计量学方法探究近红外漫反射光对不同水果的穿透能力。采集梨子、猕猴桃、苹果、砂糖橘、沃柑、蜜桔、甜橙、胡柚、沙田柚等9种水果的完整果实、果皮、果皮包裹塑料、果皮包裹金属等4类近红外漫反射光谱,发现果皮与完整果实的光谱相似度较高,且果皮越厚相似度越大,说明果皮对近红外光有较大吸收。采用主成分分析法对不同水果的4类光谱数据进行聚类分析,聚类结果随果皮厚度的增加而变差。梨子、猕猴桃、苹果数据的聚类分析结果较好,表明近红外漫反射光能穿透这些薄皮水果的果皮,从而采集到果肉的信息。从柑橘类水果的近红外光谱聚类分析结果可知,近红外漫反射光能穿透砂糖橘、沃柑、蜜桔和甜橙的果皮,而无法穿透胡柚及沙田柚等更厚水果的果皮。To investigate the penetration ability of near infrared diffuse light on different fruit pericarp based on chemometric methods.Pear,kiwi fruit,apple,Shatangju mandarin,fertile orange,mandarin,sweet orange,Hu You,and Shatian pomelo were analyzed and the original spectra of intact fruit,pericarp,pericarp with plastic,pericarp with metal plate were obtained.It was found that the pericarp spectra were almost the same as those of the intact fruit.The thicker the pericarp,the greater the similarity.The results showed that that the pericarp has great absorption of near infrared light.Furthermore,principal component analysis was used to cluster the four spectra.The spectral clustering results of pear,kiwi fruit and apple showed perfect differentiation,indicating that near infrared diffuse light could penetrate the pericarp of these thin-skinned fruits.According to the results of near infrared spectral clustering analysis of citrus fruits,the near infrared diffuse light could penetrate the pericarp of Shatangju mandarin,fertile orange,mandarin,sweet orange,and could not penetrate the pericarp of Hu You and Shatian pomelo.

关 键 词：近红外漫反射光 穿透能力 水果果皮 主成分分析 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程] O657.3[轻工技术与工程—食品科学与工程]