期刊
INTERNATIONAL DAIRY JOURNAL
卷 41, 期 -, 页码 16-22出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.idairyj.2014.09.003
关键词
-
资金
- TEKES (Finnish Funding Agency for Technology and Innovation, project acronym MILKFAT) [40169/07]
Milk fat was treated with the sn-2 specific PAN-2 lipase from Pseudozyma antarctica with the aim of achieving selective removal of saturated fatty acids with chain lengths between C12 and C16, which are abundant at the sn-2 position. Hydrolysis was also carried out using the non-specific CRU-NS from Candida rugosa and the 1,3-specific TLA-1,3 from Thermomyces lanuginosus. PAN-2 treatment decreased the proportion of the target fatty acids considerably (content of 28%, w/w) and increased the proportion of unsaturated ones (content of 52%, w/w) at the degree of hydrolysis of 48% (mol/mol) in relation to the unhydrolysed substrate (47%, w/w, C12: 0-C14: 0 and 32%, w/w, unsaturated). The fatty acid distributions of the TLA-1,3 and CRU-NS treated samples were similar to untreated milk fat. The proportion of crystalline fat was smaller and the firmness lower in the PAN-2 treated milk fat samples than in the untreated milk fat at 5 degrees C. (C) 2014 Published by Elsevier Ltd.
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