食品科学 ›› 2013, Vol. 34 ›› Issue (11): 41-44.doi: 10.7506/spkx1002-6630-201311010

• 基础研究 • 上一篇    下一篇

平菇及其培养料中5种拟除虫菊酯类农药的残留消解动态

樊中臣,唐 俊,操海群,吴祥为,花日茂,汤 锋,岳永德   

  1. 1.安徽农业大学植物保护学院,安徽省农产品安全重点实验室,安徽 合肥 230036;
    2.安徽农业大学资源与环境学院,安徽省农产品安全重点实验室,安徽 合肥 230036;3.国际竹藤中心,北京 100080
  • 收稿日期:2012-03-12 修回日期:2013-03-15 出版日期:2013-06-15 发布日期:2013-06-03
  • 通讯作者: 操海群 E-mail:caohq@vip.163.com
  • 基金资助:

    国家林业公益性行业科研专项;安徽省优秀青年科技基金资助项目

Degradation Kinetics of 5 Pyrethroid Pesticide Residues in Pleurotus ostreatus and Growing Medium

FAN Zhong-chen,TANG Jun,CAO Hai-qun,WU Xiang-wei,HUA Ri-mao,TANG Feng,YUE Yong-de   

  1. 1. Key Laboratory of Agri-food Safety of Anhui Province, College of Plant Protection, Anhui Agricultural University, Hefei 230036, China;2. Key Laboratory of Agri-food Safety of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China;3. International Centre for Bamboo and Rattan, Beijing 100080, China
  • Received:2012-03-12 Revised:2013-03-15 Online:2013-06-15 Published:2013-06-03
  • Contact: Hai-Qun CAO E-mail:caohq@vip.163.com

摘要:

在确证平菇培养料中联苯菊酯、甲氰菊酯、高效氟氯氰菊酯、高效氯氰菊酯和溴氰菊酯5种拟除虫菊酯类农药多残留分析方法的基础上,研究供试拟除虫菊酯类农药在平菇和培养料中的消解动态规律。结果表明:5种供试拟除虫菊酯类农药在平菇和培养料中的消解半衰期分别为3.01~5.06、25.48~54.59d。平菇培养料的灭菌会显著减少其中拟除虫菊酯类农药的残留量,降解率达18.80%~61.16%。平菇在含有联苯菊酯等5种拟除虫菊酯类农药的培养料中栽培42、62、83、103d后,培养料中供试农药残留量仍较高,分别为1.29~7.40、1.55~6.81、0.32~1.78、0.14~1.76mg/kg,同步采集的平菇子实体中均未检测到供试农药的残留量。因此,平菇培养料中供试拟除虫菊酯类农药残留不会向平菇子实体转移,对食用菌产品质量安全的影响较小。

关键词: 平菇, 培养料, 拟除虫菊酯类农药, 消解动态, 半衰期

Abstract:

The degradation kinetics of 5 pyrethroid pesticides in Pleurotus ostreatus and growing medium was studied by
using the validated analytical methods. The results indicated that the half-lives of five pyrethroids in Pleurotus ostreatus
and growing medium were 3.01-5.06 d and 25.48-54.59 d, respectively. Sterilization remarkably reduced pyrethroid
pesticide residues in the growing medium with degradation rate ranging from 18.80% to 61.16%. Pyrethroid pesticide
residues in the growing medium remained high after the mushroom was cultivated for 42, 62, 83 d and 103 d, which
were 1.29-7.40, 1.55-6.8, 0.32-1.78 mg/kg and 0.14-1.76 mg/kg, respectively. In contrast, no pyrethroid pesticide
residues were detected in Pleurotus ostreatus harvested at the same time points. Consequently, our findings suggest that
potential pyrethroid pesticide residues cannot be transferred to Pleurotus ostreatus fruitbodies, and thus have little impact
on the quality and safety of the edible fungus.

Key words: Pleurotus ostreatus, growing medium, pyrethroids, degradation kinetics, half-life

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