The invention relates to a fast detection method for pesticide residues, in particular to a fast detection method for organophosphorus and carbamate pesticide residues in chestnut mushroom. According to the sampling specification for pesticide residues in vegetables NY / t762 \u2011 2004, chestnut mushroom was sampled and tested by the method of cholinesterase inhibition rate. Sample processing and analysis included: the samples were cut from different parts of each chestnut mushroom, dried chestnut mushroom was cut from different trees, soaked in the centrifuge tube of phosphate buffer solution, and kept still for 15 minutes; the positive samples were added according to the concentration of detection limit Standard substance: according to GB / t5009.199.2003 standard, the inhibition rate of chestnut mushroom test sample is lower than the normal value range of 50%, and lower than the average value of the positive control detection range, so it is determined as negative, otherwise it is determined as positive. The invention can ensure the production quality and safety of chestnut mushroom, and is conducive to accelerating the circulation of chestnut mushroom in the market.
【技术实现步骤摘要】
栗蘑中有机磷和氨基甲酸酯类农药残留的快速检测方法
本专利技术涉及农药残留快速检测方法,具体是一种栗蘑中有机磷和氨基甲酸酯类农药残留的快速检测方法。
技术介绍
栗蘑(又名灰树花)是食、药兼用蕈菌,属担子菌亚门层菌纲目多孔菌科树花菌属。原限于野生,产量低;现经人工驯化后,产量大大提高。栗蘑含有丰富的氨基酸、蛋白质等多种微量元素。栗蘑种植户一般是将鲜栗蘑人工撕成丝状,在天气晴好时期,自然晾干;在阴雨天,需要烘干设备烘干,保留物质水分11-13%。夏季栗蘑干极易吸湿回潮,保管不妥,易吸湿变黄,进而发霉虫蛀等,影响品质。因此,在栗蘑生产过程中,部分种植户喷洒敌百虫、低毒性辛硫磷、速灭杀丁等农药进行防治虫害,可能造成农药残留超标。为保证栗蘑质量安全、食用安全,需要对栗蘑农药残留进行快速筛查。现有的农产品质量安全检测农药残留技术,主要是测得蔬菜总有机磷和氨基甲酸酯类农药,采用标准是GB/T5009.199.2003,标准说明对蘑菇有如下叙述:含有对酶有影响的植物次生物质,容易产生假阳性。并未给出蘑菇类检测的具体方法,而针对 ...
【技术保护点】
1.一种栗蘑中有机磷和氨基甲酸酯类农药残留的快速检测方法,按蔬菜农药残留检测抽样规范NY/T762-2004进行栗蘑抽样,按酶抑制率法进行检测;其特征在于,样品处理与分析按下述方法进行:/n(1)鲜栗蘑按每株不同部位选取5个点位,剪成1cm的小块,混均,称取2g样本3份,浸泡于5毫升、PH8.0的磷酸盐缓冲溶液离心管中,静止15min;/n(2)栗蘑干来自不同株混合,对每批次均匀分布5个点位,每个点位为一份样品,剪成0.5-1cm碎块,混均,称取0.4g样本3份,浸泡于10毫升、PH8.0的磷酸盐缓冲溶液离心管中,静止15min;/n(3)在96孔酶标板上,第一列作为空白对 ...
【技术特征摘要】
1.一种栗蘑中有机磷和氨基甲酸酯类农药残留的快速检测方法,按蔬菜农药残留检测抽样规范NY/T762-2004进行栗蘑抽样,按酶抑制率法进行检测;其特征在于,样品处理与分析按下述方法进行:
(1)鲜栗蘑按每株不同部位选取5个点位,剪成1cm的小块,混均,称取2g样本3份,浸泡于5毫升、PH8.0的磷酸盐缓冲溶液离心管中,静止15min;
(2)栗蘑干来自不同株混合,对每批次均匀分布5个点位,每个点位为一份样品,剪成0.5-1cm碎块,混均,称取0.4g...
【专利技术属性】
技术研发人员:李孝艳,蒋原媛,周宁,刘振鹏,徐志钢,付兴忠,李秀敏,王宝印,赵小静,高伟茹,王蕾,刘新妍,徐淑艳,张立军,姚鑫,康俊杰,
申请(专利权)人:李孝艳,
类型:发明
国别省市:河北;13
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