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KMID : 0352519840210010289
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Korea Univercity Medical Journal
1984 Volume.21 No. 1 p.289 ~ p.293
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Studies on Amylase Activity in Breast Milk
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吳東鮮/Oh, Dong-Seon
金舜謙/崔平和/Kim, Soon-Gyum/Choe, Pyung-Hwa
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Abstract
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It is well documented that human milk contains amylase but not in cow´s milk. Besides -the level of amylase activity in saliva and in pancreatic juice is very low at birth, but increases during the first month of life.
Present study was carried out to determined the amylase activity in breast milk from various stages of lactation and to compared with that of duodenal juice from infant. The -effect of low pH on human milk amylase activity and contribution of human milk amylase .activity to total amylase activity in duodenal juice were also studied.
Total 201 samples of milk were obtained from 109 mothers during the March to July 1983 .and results were as follows.
1) Amylase activity was high in colostrum and somewhat lower in milk from day 14 to -day 30 after delivery. In this period of lactation, breast milk contained higher amounts of .amylase than duodenal juice from infants aged 1 to 6 months.
2) Low amylase activity was found in milk from 4 month or more after delivery.
3) A pH of 5.3 does not inactivate the amylase and there was considerable breast milk .amylase activity in duodenal juice after a meal of breast milk.
Breast milk amylase could thus contribute to the breast-fed infant´s ability to digest :starch.
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