微量元素組成による調製粉乳の製造地判別

抄録

A method to determinate the origin of the manufacturing of infant formula by using inductively coupled plasma mass spectrometry (ICP-MS) was developed. Fifty one Japanese and 19 Chinese samples were digested by a microwave digestion system. We decided to measure the Ba and Ce concentrations in infant formula in order to determinate the origin of the manufacturing because the origins of two elements involved the water of the manufacture. The concentrations of two elements showed obviously different tendencies between Japan and China. However, this method could not show any differences between Tokyo and Nagano in Japan. Deflection the kind of infant formula and the date of manufacture could also not be done. All samples were determinated based on a linear discriminant function to correct the origin. Because China is a large country, we need to establish a method to determinate the origin of the infant formula in various regions of China.