The Composition of Human Milk with Special Reference to the Relation between Phosphorus partition and Phosphatase and to the Partition of Certain Vitamins

The partition of phosphorus and aneurin in relation to phosphatase in the colostrum and milk of the cow

“…2) in which the quadratic curve was fitted by the method of least squares. This close but negative curvilinear correlation between phosphatase and ester-P was noted previously for human milk (Chanda, Owen & Cramond, 1951), and also for the milk of cows treated with thyroxine and thiouracil . The correlation between inorganic-P and phosphatase was positive It can be seen from Table 3 that the amounts of ester-P in the first post-partum secretion and in that of the day following were large even though the phosphatase titres were also large.…”

“…Phosphatase is closely correlated negatively with cocarboxylase and positively with free aneurin. Recently Chanda, Owen & Cramond (1951) showed that in human colostrum and transitional milk in which the phosphatase concentration at comparable stages of lactation is much smaller than in cows' milk, the proportion of phosphorus present in the esterified form is much larger than in cows' milk, but that nevertheless the negative correlations between phosphatase and the various phosphoric esters still obtain. The object of the present work Journ.…”

The Effect of Different Factors on the Composition of Human Milk. II. The Composition of Human Milk During Lactation

“…From the 28th day on 27 mg% of phospho lipids were found in full-term milk. This value approaches the lotvest phospholipid value of Chanda et al (2) and agrees with th a t found by other investigators in cow's milk. In his book Morisson (20) indicated considerably higher values -170-499 mg% -having been established in 1900.…”

“…Concerning the variations in the fat content of breast milk during lactation the data presented in the literature do not agree. While according to Hytten (10) corresponding to own results, the lowest fat content is found in the first days, increasing slowly to the second m onth, Chanda et al (2) found a higher fat content in the beginning, and Gunasechara et al (7) established no relation between the fat content of the milk and the time of lactation.…”

The effect of mastitis on the carotenoids, vitamin A and phosphorus compounds of milk

“…For the determination of the partition of carotenoids and vitamin A in milk, the fat was extracted by the method of Olson, Hegsted & Peterson (1939). The chromatographic separation of $-carotene from other carotenoids and of vitamin A alcohol from vitamin A ester were made in the extracted fat by a modification (Chanda, Owen & Cramond, 1951;Chanda & Owen, 1952a) of Ganguly, modification of Miller's (1944) method. Both the total carotenoids and the $-carotene were determined by measuring their extinctions at 451 miy.…”