【摘要】 目的了解福建省餐饮环节淡水鱼孔雀石绿(MG)及其代谢物无色孔雀石绿(LMG)的残留情况。方法 207份样品来自福建省6个市有关餐饮场所,共28个品种,制作为鱼肉浆,经前处理后,采用高效液相色谱/荧光法对鱼肉浆中孔雀石绿及其代谢物的残留总量进行检测,阳性样品再用高效液相色谱/质谱法确证。结果 15个品种的48份样品检出孔雀石绿及其代谢物,检出率为23.2%,总MG含量在0.54～8 099μg/kg之间。桂花鱼检出率最高,达到92.9%(26/28),草鱼检出率较低,为2.38%(2/84)。结论餐饮环节销售的淡水鱼孔雀石绿及其代谢物的检出率相对较高,在某些品种淡水鱼供应链中滥用MG的现象较为突出,需要有关监管部门加大打击滥用MG的力度,确保淡水鱼的消费安全。更多还原

【Abstract】 Objective To monitor and assess the residues of malachite green(MG)and its metabolites leucomalachite green(LMG) in freshwater fish.Methods Twenty eight kinds of 207 fish samples were collected from retailers in six cities of Fujian Province.After samples being homogenized and pre-treated,the concentration of total MG in samples was quantified by high performance liquid chromatography(HPLC) coupled with fluorescence detector.The positive samples analyzed by HPLC were confirmed by HPLC-mass spectrometer(LC/MS/MS).Results The detection rate of MG was 23.2%(48/207) with levels ranged from 0.54 to 8 099 μg/kg in samples.MG was detected in 92.9%(26/28) of Chinese perch and in 2.38% of grass carp.Conclusion The detection rate of MG in freshwater fish sold in Fujian markets was relatively high,especially in Chinese perch.It is indicated that the illegal application of MG in supply chains for freshwater fish may be relatively serious.Strengthening surveillance and regulation for attacking illegal application of MG should be promoted to ensure the safety of consuming freshwater fish.更多还原