Degradation of pesticides in wheat flour during noodle production and storage

被引:1
|
作者
Liang, Ying [1 ]
Duan, Jinmiao [2 ]
Gao, Qingchao [1 ]
Zhang, Zhiyong [1 ]
机构
[1] Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, Key Lab Food Qual & Safety Jiangsu Prov, Nanjing, Jiangsu, Peoples R China
[2] Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang, Jiangsu, Peoples R China
关键词
Wheat flour; noodle; pesticide; degradation; processing factor; ORGANOPHOSPHORUS PESTICIDES; RESIDUES; FOOD; FENITROTHION; SAMPLES;
D O I
10.1080/19440049.2022.2077459
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The fate of five pesticides comprising triadimefon, imidacloprid, fenitrothion, chlorpyrifos-methyl, and chlorpyrifos in wheat flour during noodle production and accelerated storage was systematically investigated. Pesticide residues were determined by high-performance liquid chromatography with diode array detection (HPLC-DAD) after each processing step and accelerated storage. The results indicated that dough mixing reduced the concentration of five pesticide residues by 23-42%, mainly owing to the increase of moisture content. Dough resting had little effect on the residues of triadimefon, imidacloprid, and fenitrothion, but decreased chlorpyrifos-methyl and chlorpyrifos significantly by 24% and 15%, respectively. The pesticide residues increased by 3% to 69% during the drying step, attributed to the different role played by thermal evaporation or thermal degradation and concentration of the different pesticides. Boiling lowered the pesticide residues significantly by 56% to 74% in both fresh noodles and dried noodles. All the pesticide residues decreased during accelerated storage, especially for fenitrothion, chlorpyrifos-methyl, and chlorpyrifos. The processing factors (PFs) of the five pesticides in the drying step were greater than 1, while the others were all less than 1. The whole process for noodle production was beneficial to reduce the pesticide residues with PFs ranging from 0.15 to 0.35. The PFs of five pesticides in accelerated storage were all below 1.
引用
收藏
页码:1239 / 1247
页数:9
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