期刊
FOOD CHEMISTRY
卷 282, 期 -, 页码 95-100出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.01.008
关键词
Ochratoxin A; Unprocessed wheat; FT-NIR/MIR spectroscopy; Screening method; Principal component analysis; Linear discriminant analysis
资金
- Italian Ministry of Education, University and Research (P.O.N. 2007-2013), project S.I.Mi.S.A
- New Strategies for Improvement of Food Safety: Prevention, Control, Correction [CTN01 00230CL]
The use of infrared spectroscopy for the screening of 229 unprocessed durum wheat samples naturally contaminated with OTA has been investigated. Samples were analysed by both Fourier Transform near-and midinfrared spectroscopy (FT-NIR, FT-MIR). Partial-Least Squares-Discriminant Analysis (PLS-DA) and Principal Component-Linear Discriminant Analysis (PC-LDA) classification models were used to differentiate highly contaminated durum wheat samples from low contaminated ones and the performances of the resulting models were compared. The overall discrimination rates were higher than 94% for both FT-NIR and FT-MIR range by using a cut-off limit set at 2 mu g/kg OTA, independently from the classification model used thus confirming the reliability of the two statistical approaches used. False compliant rates of 6% were obtained for both spectral ranges and both classification models. These findings indicate that FT-NIR, as well as FT-MIR analysis, might be a promising, inexpensive and easyto- use screening tool to rapidly discriminate unprocessed wheat samples for OTA content.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据