基于光谱分析的奥林达夏橙可溶性固形物无损检测模型研究  

Research on determination of total soluble solids content of olinda valencia orange by VNIR spectroscopy

作　　者：毛莎莎[1,2,3,4] 曾明[4] 何绍兰[1,2,3] 易时来[1,2,3] 郑永强[1,2,3,4] 邓烈[1,2,3] 张璇[4] 王亮[4] 赵旭阳[4] 牛廷香[4] 

机构地区：[1]西南大学 [2]中国农业科学院柑桔研究所 [3]国家柑桔工程技术中心,重庆400712 [4]西南大学园艺园林学院/南方山地果树学教育部重点实验室,重庆400715

出　　处：《果树学报》2011年第3期508-512,共5页Journal of Fruit Science

基　　金：科技部科技人员服务企业专项(2009GJF10004);重庆市重大攻关项目(CSTC,2008AB1053);重庆市柑橘重大技术攻关项目(2009-02);公益性行业(农业)科研专项经费(nyhyzx07-023);农业部948项目

摘　　要：利用可见/近红外漫反射光谱测定法获取了奥林达夏橙完整果实的可见/近红外光谱值（350~2 500 nm）,采用偏最小二乘法建立了单果可溶性固形物（TSS）含量与光谱的无损检测数学模型,同时对不同建模光谱范围和不同光谱预处理方法对模型预测准确性和可靠性等的影响进行了对比分析。结果表明,校正模型在1 447~1 777 nm波段内,采用多元散射校正（MSC）预处理,对奥林达夏橙TSS的预测精度最好,其预测集的相关系数（r）为0.994,预测标准偏差为0.075%。研究结果表明,应用可见/近红外漫反射光谱检测奥林达夏橙可溶性固形物是可行的,并为奥林达夏橙果实品质无损检测及成熟度评价提供了依据。Visible/near-infrared spectroscopy（VNIRS） was used as a prominent technique for non-destructive fruit quality evaluation.In this research,the potential of using VNIRS was investigated for measuring total soluble solids（TSS） of Olinda sweet orange [Citrus sinensis（L）],and the relationship was established between non-destructive VNIRS measurement and TSS.Intact Olinda sweet orange fruit was measured by reflectance VNIR in 325 to 2500 nm range.The data set as the logarithms of the reflectance reciprocal [absorbance（log 1/R）] was analyzed by partial least square（PLS） regression in order to build the best prediction model for these characteristics,using several spectral pretreatments and multivariate calibration techniques.The best model for TSS prediction with r=0.994 and standard error of prediction（SEP） 0.075 worked well in 1447 to 1777 nm by Multiplicative Scatter Correction（MSC）.Results suggested that the VNIRS technique was adaptable to the TSS determination of Olinda sweet orange.This non-destructive,fast and accurate technology could be used in citrus industry that would be beneficial to predict fruit maturity.

关 键 词：奥林达夏橙 可见/近红外光谱 偏最小二乘法 可溶性固形物 

分 类 号：S666.4[农业科学—果树学]