PMID- 37308777 OWN - NLM STAT- MEDLINE DCOM- 20231023 LR - 20231023 IS - 1097-0010 (Electronic) IS - 0022-5142 (Linking) VI - 103 IP - 14 DP - 2023 Nov TI - Application of colorimetric sensor array coupled with machine-learning approaches for the discrimination of grains based on freshness. PG - 6790-6799 LID - 10.1002/jsfa.12777 [doi] AB - BACKGROUND: Volatile organic compounds (VOCs) in grain fluctuate depending on the degree of grain freshness. A new colorimetric sensor array (CSA) was developed as capture probes for the quantification of VOCs in grains in this work, and it was designed to monitor the variation of grain VOCs. CSA spectral data acquisition using visible-near-infrared spectroscopy and image processing of CSA's image imformation by computer were used comparatively. Then, machine-learning-based models - for example, synergistic interval partial least squares, genetic algorithm, competitive adaptive reweighted sampling (CARS) algorithm, and ant colony optimization (ACO) algorithm - were introduced to optimize variables. Moreover, principal component analysis, and linear discriminant analysis (LDA), and K-nearest neighbors (KNN) were used for the classification. Ultimately, quantitative models for detecting grain freshness are developed using various variable selection strategies. RESULTS: Compared with the pattern recognition results of image processing, visible-near-infrared spectroscopy could better separate the grains with different freshness from principal component analysis, and the prediction set of LDA models could correctly identify 100% of rice, 96.88% of paddy, and 97.9% of soybeans. In addition, compared with CARS and ACO, the LDA model and KNN model based on genetic algorithms show the best prediction performance. The prediction set could correctly identify 100% of rice and paddy samples and 95.83% of soybean samples. CONCLUSION: The method developed could be used for non-destructive detection of grain freshness. (c) 2023 Society of Chemical Industry. CI - (c) 2023 Society of Chemical Industry. FAU - Liang, Yue AU - Liang Y AD - School of Food and Biological Engineering, Jiangsu University, Jiangsu, China. FAU - Lin, Hao AU - Lin H AD - School of Food and Biological Engineering, Jiangsu University, Jiangsu, China. FAU - Kang, Wencui AU - Kang W AD - School of Food and Biological Engineering, Jiangsu University, Jiangsu, China. FAU - Shao, Xiaokang AU - Shao X AD - School of Food and Biological Engineering, Jiangsu University, Jiangsu, China. FAU - Cai, Jianrong AU - Cai J AUID- ORCID: 0000-0002-7509-3067 AD - School of Food and Biological Engineering, Jiangsu University, Jiangsu, China. FAU - Li, Huanhuan AU - Li H AD - School of Food and Biological Engineering, Jiangsu University, Jiangsu, China. FAU - Chen, Quansheng AU - Chen Q AUID- ORCID: 0000-0003-2498-3278 AD - School of Food and Biological Engineering, Jiangsu University, Jiangsu, China. AD - College of Food and Biological Engineering, Jimei University, Xiamen, China. LA - eng GR - SCX 203321/Jiangsu Agricultural independent innovation fund/ GR - BE2021343/Key R&D program of Jiangsu Province/ GR - 51975259/National Natural Science Foundation of China/ PT - Journal Article DEP - 20230628 PL - England TA - J Sci Food Agric JT - Journal of the science of food and agriculture JID - 0376334 RN - 0 (Volatile Organic Compounds) SB - IM MH - Colorimetry MH - Least-Squares Analysis MH - Algorithms MH - Spectroscopy, Near-Infrared/methods MH - Discriminant Analysis MH - *Volatile Organic Compounds/analysis MH - *Oryza OTO - NOTNLM OT - colorimetric sensor array OT - freshness degree OT - grain OT - image processing OT - visible-near-infrared spectroscopy EDAT- 2023/06/13 01:14 MHDA- 2023/10/23 00:43 CRDT- 2023/06/12 23:29 PHST- 2023/05/28 00:00 [revised] PHST- 2022/08/05 00:00 [received] PHST- 2023/06/13 00:00 [accepted] PHST- 2023/10/23 00:43 [medline] PHST- 2023/06/13 01:14 [pubmed] PHST- 2023/06/12 23:29 [entrez] AID - 10.1002/jsfa.12777 [doi] PST - ppublish SO - J Sci Food Agric. 2023 Nov;103(14):6790-6799. doi: 10.1002/jsfa.12777. Epub 2023 Jun 28.