Fast detection and visualization of minced lamb meat adulteration using NIR hyperspectral imaging and multivariate image analysis

被引:163
作者
Kamruzzaman, Mohammed [1 ]
Sun, Da-Wen [1 ]
ElMasry, Gamal [1 ]
Allen, Paul [2 ]
机构
[1] Natl Univ Ireland Univ Coll Dublin, Sch Biosyst Engn, Agr & Food Sci Ctr, Dublin 4, Ireland
[2] TEAGASC, AFRC, Dublin 15, Ireland
关键词
NIR hyperspectral imaging; Adulteration; Authentication; Minced lamb meat; PLSR and MLR; NEAR-INFRARED REFLECTANCE; VACUUM COOLING PROCESS; COMPUTER VISION; COOKED MEAT; REFRIGERATION CYCLE; QUALITY EVALUATION; PORK SAUSAGES; PART; BEEF; SPECTROSCOPY;
D O I
10.1016/j.talanta.2012.10.020
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Many studies have been carried out in developing non-destructive technologies for predicting meat adulteration, but there is still no endeavor for non-destructive detection and quantification of adulteration in minced lamb meat. The main goal of this study was to develop and optimize a rapid analytical technique based on near-infrared (NIR) hyperspectral imaging to detect the level of adulteration in minced lamb. Initial investigation was carried out using principal component analysis (PCA) to identify the most potential adulterate in minced lamb. Minced lamb meat samples were then adulterated with minced pork in the range 2-40% (w/w) at approximately 2% increments. Spectral data were used to develop a partial least squares regression (PLSR) model to predict the level of adulteration in minced Iamb. Good prediction model was obtained using the whole spectral range (910-1700 nm) with a coefficient of determination (R-cv(2)) of 0.99 and root-mean-square errors estimated by cross validation (RMSECV) of 1.37%. Four important wavelengths (940, 1067, 1144 and 1217 nm) were selected using weighted regression coefficients (Bw) and a multiple linear regression (MLR) model was then established using these important wavelengths to predict adulteration. The MLR model resulted in a coefficient of determination (R-cv(2)) of 0.98 and RMSECV of 1.45%. The developed MLR model was then applied to each pixel in the image to obtain prediction maps to visualize the distribution of adulteration of the tested samples. The results demonstrated that the laborious and time-consuming tradition analytical techniques could be replaced by spectral data in order to provide rapid, low cost and non-destructive testing technique for adulterate detection in minced lamb meat. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:130 / 136
页数:7
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