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Efficiency of transfer of polyunsaturated fats into milk
Author(s) -
Bitman Joel,
Dryden L. P.,
Goering H. K.,
Wrenn T. R.,
Yoncoskie R. A.,
Edmondson L. F.
Publication year - 1973
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02671110
Subject(s) - polyunsaturated fatty acid , chemistry , food science , formaldehyde , cholesterol , milk fat , fatty acid , linseed oil , biochemistry
Polyunsaturated milk has been produced by feeding cows safflower oil enclosed in a casein coat protected with formaldehyde (SOC‐F) or formaldehyde‐treated soybean (SB) preparations. The efficiency of transfer of dietary 18∶2 ranged from 17 to 42% for various lots of SOC‐F and was only 2–8% for SB (per cent transfer=18.2 in milk fat per dietary 18∶2×100). The 18∶2 content of the milk fat increased from basal levels of 2–3% of total fatty acids to 35% with certain SOC‐F levels and 7% with SB. Major compensatory changes were noted in 14∶0 and 16∶0 fatty acids. Blood cholesterol, triglycerides and nonesterified fatty acids all increased markedly as cows were fed increasing amounts of SOC‐F. There was no increase in cholesterol in the milk.