State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China.
Centre for Research and Development of Fine Chemicals, Guizhou University, Guiyang, China.
J Sci Food Agric. 2020 Feb;100(3):1230-1237. doi: 10.1002/jsfa.10134. Epub 2019 Nov 28.
Ensuring the yield, quality, and profitability of okra by preventing and controlling pests with the application of insecticides has increased in the last decade. Some insecticide residues might remain in edible parts of okra (fruits) and lead to several potential human health problems. Therefore, research on the residue behaviour, risk assessment and removal approach of insecticides on okra fruits is important for food safety, together with the proper application and residual elimination of insecticides in okra.
A simple liquid chromatography with tandem mass spectrometry (LC-MS/MS) method was established and validated for determining the tebufenozide residues in okra fruits. The recoveries of tebufenozide in okra fruits were >72% with relative standard deviations of 0.6 to 6.1%. The dissipation rates of tebufenozide were different in okra fruits cultivated under open land and glasshouse field conditions because of the discriminating humidity and temperature conditions. The dietary intake of the tebufenozide residues from okra fruit consumption for Chinese consumers was fairly low, with approximately no potential health risk. The processing factor values of washing, blanching, washing + blanching and soaking were all less than one, which indicated that these processes could effectively reduce the residual hydrazide in the okra fruit.
The developed method for analysing tebufenozide in okra fruits was applicable for field studies on this insecticide. The potential health risk of tebufenozide in okra fruits could be negligible to the health of different age groups of Chinese consumers. The soaking process effectively removed tebufenozide residues from okra fruits. The obtained data will help Chinese governments establish a maximum residue limit of tebufenozide in okra and provide data for the risk assessment and removal of tebufenozide in other crops. © 2019 Society of Chemical Industry.
在过去十年中，通过应用杀虫剂来预防和控制虫害，以确保秋葵的产量、质量和利润。一些杀虫剂残留可能会留在秋葵（果实）的可食用部分，导致一些潜在的人类健康问题。因此，研究杀虫剂在秋葵果实上的残留行为、风险评估和去除方法对于食品安全以及秋葵中杀虫剂的正确应用和残留消除非常重要。
建立并验证了一种简单的液相色谱-串联质谱（LC-MS/MS）法，用于测定秋葵果实中涕灭威砜的残留量。涕灭威砜在秋葵果实中的回收率>72%，相对标准偏差为 0.6 至 6.1%。由于湿度和温度条件的差异，露天和温室条件下种植的秋葵果实中涕灭威砜的消解率不同。中国消费者从食用秋葵果实中摄入涕灭威砜残留量较低，不存在潜在健康风险。洗涤、烫漂、洗涤+烫漂和浸泡的处理因子值均小于 1，表明这些过程可以有效降低秋葵果实中残留的肼。
所建立的分析秋葵果实中涕灭威砜的方法适用于该杀虫剂的田间研究。不同年龄组中国消费者食用秋葵果实中的涕灭威砜的潜在健康风险可以忽略不计。浸泡过程能有效去除秋葵果实中的涕灭威砜残留。所得数据将有助于中国政府制定涕灭威砜在秋葵中的最大残留限量，并为其他作物中涕灭威砜的风险评估和去除提供数据。© 2019 化学工业协会。
