Quantitative detection of pepper powder adulterated with rice powder using Fourier-transform near infrared spectroscopy

12th TSAE International Conference

Lapcharoensuk, R.^1^2 ; Chalachai, S.^3 ; Sinjaru, S.^3 ; Singsriand, P.^4 ; Hongwiangjan, J.^1 ; Yaemphochai, N.^1

Department of Agricultural Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand^1

Post Harvest Innovation Research and Development Laboratory, Department of Agricultural Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand^2

Department of Agricultural Engineering and Technology, Faculty of Agriculture and Natural Resources, Rajamangala University of Technology Tawan-ok, Chonburi, Thailand^3

Department of Computer Science, Faculty of Science and Technology, Rajamangala University of Technology Tawan-ok, Chonburi, Thailand^4

关键词: Fourier transform near infrared spectroscopy;    Fourier transform near-infrared spectrometers;    NIR spectroscopy;    Optimum model;    Partial least squares regression;    Powder samples;    Quantitative detection;    Quantitative modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/301/1/012068/pdf
DOI  :  10.1088/1755-1315/301/1/012068

来源: IOP

【 摘 要 】

Near infrared (NIR) spectroscopy model was developed for detecting pepper powder adulterated with rice powder. The adulterated pepper powder samples were prepared by mixing rice powders with pure pepper powder to 19 levels of concentrations (w/w) from 5-95%w/w. Two hundred ten NIR spectra of pure and adulterant pepper powders were recorded using Fourier-transform near infrared spectrometer. The NIRs quantitative model for detecting adulterant pepper were established using partial least squares regression (PLS). The optimum model was established from NIR spectra treated by constant offset elimination with the of 0.99. These results show that the NIR spectroscopy could be a modern method for monitoring adulteration of pepper powder with rice powder.