期刊
FOOD CHEMISTRY
卷 72, 期 3, 页码 385-388出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0308-8146(00)00242-9
关键词
capillary electrophoresis; electrochemical detection; lactose; sugar free; milk powder
Lactose in three sugar-free milk powder samples were satisfactorily determined by capillary electrophoresis with electrochemical detection using a 300 mum copper disk electrode as the working electrode in 0.1 mol/l NaOH medium. There was acceptable linearity (0.9969) between the peak current and concentration of lactose in the range from 5.0x10(-6) to 5.0x10(-3) g/ml with the detection limit (S/N = 3) of 1x10(-7)g/ml. The proposed method was successfully applied to analyze the actual milk powder samples. (C) 2001 Elsevier Science Ltd. All rights reserved.
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