Abstract
Many previous studies have investigated the water-soluble vitamin content of Japanese breast milk. However, regular measurement is necessary because these components appear to change as a result of alterations in dietary habits. This paper reports the distribution of the water-soluble vitamin content of Japanese breast milk and the respective mean values ±SD. These were as follows: vitamin B1 0.12±0.06 mg/L as thiamine hydrochloride; vitamin B2 0.39±0.13 mg/L as riboflavin; vitamin B6 0.10±0.04 mg/L as pyridoxine; vitamin B12 0.68±0.26 μg/L as cyanocobalamin; niacin 1.4±0.47 mg/L as nicotinamide; pantothenic acid 7.0±2.5 mg/L; folic acid 4.6±2.6 μg/L as pteroylmonoglutamic acid; biotin 46±22 μg/L; vitamin C 46±11 mg/L as ascorbic acid.
