香蕉中咪鲜胺的消解动态及安全性评价  

Degradation dynamics and safety evaluation of prochloraz in banana

作　　者：袁小雅 彭梓[1] 周慧平[1] 刘琛 

机构地区：[1]湖南出入境检验检疫局检验检疫技术中心,国家食品安全检测重点实验室,食品安全科学技术湖南省重点实验室,长沙410004 [2]韶山出入境检验检疫局,湘潭411202

出　　处：《食品安全质量检测学报》2016年第1期209-214,共6页Journal of Food Safety and Quality

摘　　要：目的建立基质分散固相萃取-液相色谱-串联质谱法快速检测香蕉中咪鲜胺及其代谢产物2,4,6-三氯苯酚残留量的方法,检测香蕉果皮和果肉里的残留量。方法用浓度为50 mg/L咪鲜胺溶液处理香蕉5 min,置于15℃下贮藏后,用基质分散固相萃取-液相色谱-串联质谱法检测残留量后进行消解动态分析。结果果皮中咪鲜胺消解动态方程式为C=35.492e^(-0.0648t),r2=0.9505,残留半衰期T1/2为10.7 d。果肉中咪鲜胺消解动态方程式为C=20.212e^(-0.0711t),r^2=0.9922,残留半衰期T_(1/2)为9.7 d。结论香蕉中咪鲜胺残留尽管符合我国国家规定的限量标准,但对幼儿存在不安全隐患。Objective To establish a method for the rapid determination of prochloraz and its metabolites 2,4,6-trichlorophenol in banana by matrix dispersion solid phase extraction-liquid chromatography-tandem mass spectrometry. Methods The bananas were treated by 50 mg/L prochloraz and dipped 5 min, then storage at 15℃. Degradation dynamic was analyzed after the determination of residue by matrix dispersion solid phase extraction-liquid chromatography-tandem mass spectrometry. Results The degradation dynamics equation of prochloraz in banana peel and pulp were C=35.492e^-0.0648t and C=-20.212e^-0.0711t. The linear correlation coefficients were r2=0.9509, r^2=0.9922. Half-life residues （T1/2） were 10.7 d and 9.7 d. Conclusion Although the prochloraz residues in banana can meet the restrictions imposed by our national standards, there are also potential risk for children.

关 键 词：香蕉 咪鲜胺 2 4 6-三氯苯酚 消解动态 安全性评价 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程] TS201.6[轻工技术与工程—食品科学与工程]