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EVALUATION OF FRESH HUMAN MILK SAMPLES AND EFFECTS OF FREEZING AND FROZEN STORAGE.

Author(s) : FRIEND B. A.

Type of article: Article

Summary

HUMAN MILK SAMPLES COLLECTED FROM DONORS WERE ANALYSED INDIVIDUALLY AS RAW MILK OR POOLED FOR FREEZING STUDIES. POOLED SAMPLES WERE FROZEN IN A FREEZER AT 253 K (-20 DEG C) (SLOW FREEZE) OR IN A DRY ICE/ACETONE/ALCOHOL BATH (QUICK FREEZE) AND HELD AT 248 K (-25 DEG C) FOR UP TO 3 MONTHS. IN RAW MILK, THERE WAS CONSIDERABLE SAMPLE-TO-SAMPLE VARIATION IN CONTENTS OF ENZYMES, B VITAMINS AND LIPIDS. FREEZING AND FROZEN STORAGE HAD LITTLE EFFECT ON MILK LYSOZYME OR PROTEINASE ACTIVITIES, LIPASE ACTIVITY INCREASED SLIGHTLY AND LACTOPEROXIDASE ACTIVITY DECREASED. MILK BIOTIN, NIACIN, PANTOTHENIC ACID AND TOTAL LIPID CONTENTS AND FATTY ACID WERE NOT AFFECTED, BUT UNESTERIFIED FATTY ACID CONTENT INCREASED SLIGHTLY. SLOW FREEZING IS CONSIDERED A USEFUL METHOD. (DAIRY SCI. ABSTR., GB., 45, N.7, 1983, 5205.

Details

  • Original title: EVALUATION OF FRESH HUMAN MILK SAMPLES AND EFFECTS OF FREEZING AND FROZEN STORAGE.
  • Record ID : 1984-2363
  • Languages: English
  • Source: Pediatr. Res. - vol. 17 - n. 1
  • Publication date: 1983
  • Document available for consultation in the library of the IIR headquarters only.

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