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为了考察敌百虫、毒死蜱、氯氰菊酯和多菌灵4种农药在莼菜加工过程中的加工因子,从而优化莼菜的加工过程,分别模拟莼菜加工的清洗、杀青、护绿和储藏4个步骤,考察4种农药的加工因子,并分析每个步骤的相关因素对加工因子的影响。采用气相色谱-火焰光度检测器(GC-FPD)检测敌百虫和毒死蜱的含量,气相色谱-电子捕获检测器(GC-ECD)检测氯氰菊酯的含量,液相色谱-二极管阵列检测器(LC-DAD)检测多菌灵的含量。结果表明:随着清洗时间的增加,4种农药的加工因子逐渐变小,并在一定时间后趋于稳定;在供试的10 min内,杀青时间越长,4种农药的加工因子越小;护绿和储藏条件的改变对加工因子均无显著影响。综合考虑莼菜品质和农药残留两方面因素,建议莼菜清洗时间为30 min,在不影响莼菜品质的前提下尽量延长杀青时间。
In order to investigate the processing factors of trichlorfon, chlorpyriphos, cypermethrin and carbendazim in the processing of ragweed, we optimized the processing of ragweed. The four steps of cleaning, fixing, 4 kinds of pesticides processing factors, and analysis of each step of the factors related to the processing factor. The contents of trichlorfon and chlorpyrifos were determined by gas chromatography-flame photometric detector (GC-FPD), the content of cypermethrin by gas chromatography-electron capture detector (GC-ECD) DAD) to detect carbendazim content. The results showed that with the increase of cleaning time, the processing factors of four kinds of pesticides gradually became smaller and tended to be stable after a certain period of time. During the test period of 10 min, the longer the fixing time, the smaller the processing factors of the four pesticides ; Greening and storage conditions have no significant effect on the processing factors. Taking into account both the quality and pesticide residues of Brasenia schreberkus, it is suggested that Brasenia schreberi wash time should be 30 min, and the rapeseed time should be prolonged as long as the rapeseed quality is not affected.