title: Detection of meat-borne trimethylamine based on nanoporous colorimetric sensor arrays.
abstract: Trimethylamine (TMA) is a key measurement indicator for meat spoilage. In order to develop simple, cheap, and sensitive sensors for TMA detection, a nanoporous colorimetric sensor array (NCSA) was developed. A sol-gel method has been used to obtain TiO2 nanoporous film as substrate material to improve the sensitivity and stability of the CSA. The sensor enabled the visual detection of TMA gas from the permissible exposure limits (PEL) 10 ppm to 60 ppb concentrations with significant response. Principal component analysis (PCA) was used to characterize the functional relationship between the color difference data and TMA concentrations. Furthermore, the NCSA was used to predict the presence of TMA in Yao-meat. A partial least square (PLS) prediction model was obtained with the correlation coefficients of 0.896 and 0.837 in calibration and prediction sets, respectively. This research suggested that the NCSA offers a useful technology for quality evaluation of TMA in meat.
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China.
authors.forename: Huang
authors.initials: H
authors.lastname: Xiao-wei
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China.
authors.forename: Li
authors.initials: L
authors.lastname: Zhi-hua
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China. Electronic address: zou_xiaobo@ujs.edu.cn.
authors.forename: Zou
authors.initials: Z
authors.lastname: Xiao-bo
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China.
authors.forename: Shi
authors.initials: S
authors.lastname: Ji-yong
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China.
authors.forename: Mao
authors.initials: M
authors.lastname: Han-ping
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Jie-wen
authors.affiliation: The Research Center of China Hemp Materials, Beijing, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Li-min
authors.affiliation: School of Food Science and Nutrition, The University of Leeds, Leeds LS2 9JT, United Kingdom.
authors.forename: Holmes
authors.initials: H
authors.lastname: Mel
mesh_terms: D003124:Colorimetry / Q000379:methods*; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D016018:Least-Squares Analysis; D057230:Limit of Detection; D008460:Meat / Q000032:analysis*; D008744:Methylamines / Q000032:analysis*; D008962:Models, Theoretical; D058608:Nanopores; D025341:Principal Component Analysis; D014025:Titanium / Q000737:chemistry*
chemical_list: D008744:Methylamines; C009495:titanium dioxide; D014025:Titanium; C023336:trimethylamine
keywords: Chinese traditional salted pork in jelly; Nanoporous colorimetric sensor array; Sol–gel; TiO(2); Trimethylamine