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Food Chem

Title:		Discrimination of rice varieties using smartphone-based colorimetric sensor arrays and gas chromatography techniques
Author(s):		Arslan M; Zareef M; Tahir HE; Guo Z; Rakha A; Xuetao H; Shi J; Zhihua L; Xiaobo Z; Khan MR;
Address:		"School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China. National Institute of Food Science and Technology, University of Agriculture, Faisalabad 38000, Pakistan. School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China. Electronic address: zou_xiaobo@ujs.edu.cn"
Journal Title:		Food Chem
Year:		2022
Volume:		20210806
Issue:
Page Number:		130783 -
DOI:		10.1016/j.foodchem.2021.130783
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"A smartphone-based colorimetric sensor array system was established for discrimination of rice varieties having different geographical origins. Purposely, aroma profiling of nine rice varieties was performed using solid-phase microextraction gas chromatography-mass spectrometry. Alcohols, aldehydes, alkanes, ketones, heterocyclic compounds, and organic acids represent the abundant compounds. Colorimetric sensor array system produced a characteristic color difference map upon its exposure to volatile compounds of rice. Discrimination of rice varieties was subsequently achieved using principal component analysis, hierarchical clustering analysis, and k-nearest neighbors. Rice varieties from same geographical source were clustered together in the scatter plot of principal component analysis and hierarchical clustering analysis dendrogram. The k-nearest neighbors algorithm delivered optimal results with discrimination rate of 100% for both calibration and prediction sets using sensor array system. The smartphone-based colorimetric sensor array system and gas chromatography technique were able to effectively differentiate rice varieties with the advantage of being simple, rapid, and low-cost"
Keywords:		Colorimetry Gas Chromatography-Mass Spectrometry Odorants/analysis *Oryza Smartphone Solid Phase Microextraction *Volatile Organic Compounds/analysis Colorimetric sensor array Multivariate analysis Rice Spme-gc-ms;
Notes:		"MedlineArslan, Muhammad Zareef, Muhammad Tahir, Haroon Elrasheid Guo, Ziang Rakha, Allah Xuetao, Hu Shi, Jiyong Zhihua, Li Xiaobo, Zou Khan, Moazzam Rafiq eng England 2021/08/17 Food Chem. 2022 Jan 30; 368:130783. doi: 10.1016/j.foodchem.2021.130783. Epub 2021 Aug 6"