首页   按字顺浏览 期刊浏览 卷期浏览 Digestive Enzymes in Human Milk: Stability at Suboptimal Storage Temperatures
Digestive Enzymes in Human Milk: Stability at Suboptimal Storage Temperatures

 

作者: Hamosh,   Margit Henderson,   Theresa Ellis,   Lorie Mao,   Jee-In Hamosh*,  

 

期刊: Journal of Pediatric Gastroenterology and Nutrition  (OVID Available online 1997)
卷期: Volume 24, issue 1  

页码: 38-43

 

ISSN:0277-2116

 

年代: 1997

 

出版商: OVID

 

关键词: Amylase;Bile-salt-dependent lipase;Lipoprotein lipase;pH;Human milk

 

数据来源: OVID

 

摘要:

Background:Women who return to work outside of the home while still breastfeeding must often store the expressed milk at less than optimal temperatures. Human milk provides digestive enzymes (amylase and lipase) that compensate in the newborn for immature pancreatic function.Methods:We have assessed the stability of amylase and bile salt-dependent lipase after storage for 1-24 h at 15, 25, and 38°C.Results:Both enzymes were stable at 15 and 25°C for 24 h, whereas at 38°C there was a 15 and 20% decrease in lipase and amylase activity, respectively. The stability of milk lipoprotein lipase was also tested. This very labile enzyme was more stable in milk than previously reported for blood and tissues, i.e., 20 and 50% decrease in activity after storage at 15 or 25°C for 24 h, respectively. A two-unit drop in milk pH by 24 h of storage would not affect the activity of digestive enzymes, which are stable at pH >3.5.Conclusions:We conclude that milk provides the same compensatory digestive activity after short-term storage, even at relatively high temperature, as when fed fresh to the infant.

 



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