Volume 12, Oct. 1953, No. 4, page 354, "Total Amino Acid Composition in Mature Human Milk" by Mung W. Cheung, M.D., Edward L. Pratt, M.D., and Dorothy I. Fowler, B.Sc.
The value for methionine in our original paper does not include its oxidized product, methionine sulfoxide. In our chromatograms, this compound appears as a skewed peak, suggesting that it contains more than a single substance. However, if this possibility is disregarded and the methionine sulfoxide calculated as methionine, Pool A would have a value for methionine of 19.4 instead of 15.4 mg./100 cc. milk; and Pool B a value of 18.1 instead of 14.3 mg./100 cc. milk. The average total value for methionine of 18.8 mg./100 cc. milk is thus closer to those reported by P. Soupart, Stanford Moore, and E. J. Bigwood, J. Biol. Chem. 206:699, 1954, for human milk analyzed by the ion exchange technic which we employed. [SEE TABLE I IN SOURCE PDF].
- Copyright © 1954 by the American Academy of Pediatrics