Determination of potassium sorbate and sorbic acid in agricultural products using THz time-domain spectroscopy

doi:10.1088/1674-1056/ab9f25

中国物理B ›› 2020, Vol. 29 ›› Issue (9): 98705-098705.doi: 10.1088/1674-1056/ab9f25

所属专题： SPECIAL TOPIC —Terahertz physics

Determination of potassium sorbate and sorbic acid in agricultural products using THz time-domain spectroscopy

Yuying Jiang(蒋玉英), Guangming Li(李广明), Ming Lv(吕明), Hongyi Ge(葛宏义), Yuan Zhang(张元)

1 Key Laboratory of Grain Information Processing and Control(Henan University of Technology), Ministry of Education, Zhengzhou 450001, China;
2 Henan Provincial Key Laboratory of Grain Photoelectric Detection and Control, Zhengzhou 450001, China;
3 College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China

收稿日期:2020-03-31 修回日期:2020-06-02 接受日期:2020-06-23 出版日期:2020-09-05 发布日期:2020-09-05
通讯作者: Hongyi Ge, Yuan Zhang E-mail:gehongyi2004@163.com;zy-haut@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61705061 and 61975053), Key Science and Technology Program of Henan Province of China (Grant Nos. 182102110204 and 192102110047), Key Scientific and Research Project of Educational Committee of Henan Province of China (Grant No. 19B510001), and Open Fund Project of Key Laboratory of Grain Information Processing & Control, Ministry of Education, Henan University of Technology (Grant Nos. KFJJ2016108 and KFJJ2017107).

Determination of potassium sorbate and sorbic acid in agricultural products using THz time-domain spectroscopy

Yuying Jiang(蒋玉英)^1,2, Guangming Li(李广明)^1,2,3, Ming Lv(吕明)^1,2,3, Hongyi Ge(葛宏义)^1,2,3, Yuan Zhang(张元)^1,2

1 Key Laboratory of Grain Information Processing and Control(Henan University of Technology), Ministry of Education, Zhengzhou 450001, China;
2 Henan Provincial Key Laboratory of Grain Photoelectric Detection and Control, Zhengzhou 450001, China;
3 College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China

Received:2020-03-31 Revised:2020-06-02 Accepted:2020-06-23 Online:2020-09-05 Published:2020-09-05
Contact: Hongyi Ge, Yuan Zhang E-mail:gehongyi2004@163.com;zy-haut@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61705061 and 61975053), Key Science and Technology Program of Henan Province of China (Grant Nos. 182102110204 and 192102110047), Key Scientific and Research Project of Educational Committee of Henan Province of China (Grant No. 19B510001), and Open Fund Project of Key Laboratory of Grain Information Processing & Control, Ministry of Education, Henan University of Technology (Grant Nos. KFJJ2016108 and KFJJ2017107).

摘要/Abstract

摘要： The aim of this study was to investigate the feasibility of detecting potassium sorbate (PS) and sorbic acid (SA) in agricultural products using THz time-domain spectroscopy (THz-TDS). The absorption spectra of PS and SA were measured from 0.2 to 1.6 THz at room temperature. The main characteristic absorption peaks of PS and SA in polyethylene and powdered agricultural products with different weight ratios were detected and analyzed. Interval partial least squares (iPLS) combined with a particle swarm optimization and support vector classification (PSO-SVC) algorithm was proposed in this paper. iPLS was used for frequency optimization, and the PSO-SVC algorithm was used for spectrum analysis of the preservative content based on the optimal spectrum ranges. Optimized PSO-SVC models were obtained when the THz spectrum from the PS/SA mixture was divided into 11 or 12 subintervals. The optimal penalty parameter c and kernel parameter g were found to be 1.284 and 0.863 for PS (0.551-1.487 THz), 1.374 and 0.906 for SA (0.454-1.216 THz), respectively. The preliminary results indicate that THz-TDS can be an effective nondestructive analytical tool used for the quantitative detection of additives in agricultural products.

关键词: THz-TDS, preservative content, quantitative analysis, iPLS, PSO-SVC, nondestructive detection

Abstract: The aim of this study was to investigate the feasibility of detecting potassium sorbate (PS) and sorbic acid (SA) in agricultural products using THz time-domain spectroscopy (THz-TDS). The absorption spectra of PS and SA were measured from 0.2 to 1.6 THz at room temperature. The main characteristic absorption peaks of PS and SA in polyethylene and powdered agricultural products with different weight ratios were detected and analyzed. Interval partial least squares (iPLS) combined with a particle swarm optimization and support vector classification (PSO-SVC) algorithm was proposed in this paper. iPLS was used for frequency optimization, and the PSO-SVC algorithm was used for spectrum analysis of the preservative content based on the optimal spectrum ranges. Optimized PSO-SVC models were obtained when the THz spectrum from the PS/SA mixture was divided into 11 or 12 subintervals. The optimal penalty parameter c and kernel parameter g were found to be 1.284 and 0.863 for PS (0.551-1.487 THz), 1.374 and 0.906 for SA (0.454-1.216 THz), respectively. The preliminary results indicate that THz-TDS can be an effective nondestructive analytical tool used for the quantitative detection of additives in agricultural products.

Key words: THz-TDS, preservative content, quantitative analysis, iPLS, PSO-SVC, nondestructive detection

中图分类号:

87.50.U-

蒋玉英, 李广明, 吕明, 葛宏义, 张元. Determination of potassium sorbate and sorbic acid in agricultural products using THz time-domain spectroscopy[J]. 中国物理B, 2020, 29(9): 98705-098705.

Yuying Jiang(蒋玉英), Guangming Li(李广明), Ming Lv(吕明), Hongyi Ge(葛宏义), Yuan Zhang(张元). Determination of potassium sorbate and sorbic acid in agricultural products using THz time-domain spectroscopy[J]. Chin. Phys. B, 2020, 29(9): 98705-098705.

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Determination of potassium sorbate and sorbic acid in agricultural products using THz time-domain spectroscopy

Determination of potassium sorbate and sorbic acid in agricultural products using THz time-domain spectroscopy

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