期刊
FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE
卷 11, 期 1, 页码 15-19出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/19393210.2017.1389993
关键词
Melamine; milk powder; HPLC
资金
- UBA (Universidad de Buenos Aires) [20020120100157]
- CONICET (Consejo Nacional de Investigaciones Cientificas y Tecnicas) [4883]
- CIC (Comision de Investigaciones Cientificas de la Provincia de Buenos Aires) [048/2016]
- FICTB (Fundacion de Investigaciones Cientificas Teresa Benedicta de la Cruz) [FICTBC 029/15]
Forty samples of milk powder purchased in Uruguay were analysed to assess melamine (MEL) levels. Trichloroacetic acid and acetonitrile were used to extract and precipitate milk proteins previously to clean up of the samples by solid-phase extraction and then were determined by liquid chromatography coupled to ultraviolet detection. The limit of detection (LOD) and limit of quantification (LOQ)of MEL were 0.006 and 0.019mg kg(-1), respectively. Milk was fortified with MEL at three levels, producing average recoveries higher than 83.8%. The values for positive samples ranged from 0.017 to 0.082mg kg(-1). Nine samples were positive. Three of them had concentrations between LOD and LOQ. The mean MEL contamination was 0.028mg kg(-1). Consumption of milk powder containing these levels of MEL does not constitute a health risk for consumers.
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