The relatively novel acaricide cyenopyrafen has a good application prospect in the citrus industry, but there is a certain residual risk. In order to clarify the residual behavior of cyenopyrafen in commercial processing of orange juice, a modified QuEChERS samples preparation method combined with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was applied to analyze the residues of cyenopyrafen in citrus processing samples. After sprayed with five times the concentration of the maximum recommended dosage solutions, the fruits were collected on the 15 days after spraying and were commercially processed immediately. The results showed that the concentration of cyenopyrafen in squeezed juice, filtrated juice, NFC juice and concentrated juice were significantly lower than those in fresh fruits and the processing factor were all less than 1. But for wet pomace and essential oil, the processing factor of cyenopyrafen was greater than 1 which indicated the concentration of cyenopyrafen increased. In addition, the enrichment time of cyenopyrafen in essential oil was relatively high. Therefore, the use of essential oils should pay attention to the risk of cyenopyrafen residues. This work could provide reference for improving the database of pesticide residue processing factors in citrus and contribute to a more accurate dietary risk assessment of cyenopyrafen. This study helps the application of this compound in citrus plantations.
HAN Ke
,
WANG Yemei
,
ZHOU Huyi
,
LIANG Daowei
,
ZHAO Qiyang
,
JIAO Bining
. Residual behavior of cyenopyrafen in the process of orange juice[J]. Food and Fermentation Industries, 2022
, 48(12)
: 24
-29
.
DOI: 10.13995/j.cnki.11-1802/ts.028355
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