Approximately thirty studies of the ascorbic acid concentration in human milk have been made in various parts of the world, including the United States, England, India, China, Japan and the Philippines. The vitamin C concentration in human milk for peoples of these countries, living in different environments and consuming many different types of diets, ranges from less than 1 to 9 mg. per hundred cubic centimeters (table).
Only two studies have been made in the United States: Selleg and King1 reported the vitamin C concentration in human milk, obtained from the mothers three to ten days post partum. Ingalls, Draper and Teel2 reported analyses made of the milk of mothers four to five, seven to eight and fourteen days post partum, also a total of nine vitamin C determinations made after the women had been lactating for one to eight months. Selleg and King obtained their milk samples
MUNKS B, ROBINSON A, WILLIAMS HH, MACY IG, LESHER M, HARMON ME, BRODY JK, ANDERSON J, RUST R. XXV. ASCORBIC ACID AND DEHYDROASCORBIC ACID IN COLOSTRUM AND MATURE HUMAN MILK. Am J Dis Child. 1945;70(3):176-181. doi:10.1001/archpedi.1945.02020210043007