Document Detail

Effects of sheep alpha s1-casein CC, CD and DD genotypes on milk composition and cheesemaking properties.
MedLine Citation:
PMID:  10480079     Owner:  NLM     Status:  MEDLINE    
The effects of sheep alpha s1-casein CC, CD and DD genotypes on milk composition and cheese yield were studied. Processed bulk milk was collected from three groups of 15 ewes, carrying alpha s1-casein CC, CD and DD genotypes. CC milk was higher in casein content than CD or DD milk (+3.5 and +8.6% respectively), and had a higher protein: fat ratio and a smaller casein micelle diameter. In addition, DD milk had a significantly lower alpha s1-casein content. The main differences were in curd formation: CC milk had better renneting properties. Cheesemaking trials, carried out in a pilot plant, showed that CC milk had better cheesemaking characteristics than DD milk, while CD milk was intermediate. Both 1 d old and fully ripened cheeses had different fat: dry matter ratios and alpha s1-I-casein electrophoretic mobilities: these were lower for DD cheese. As a consequence, these genotypes could be considered as markers of milk and/or cheese quality.
A Pirisi; G Piredda; C M Papoff; R Di Salvo; S Pintus; G Garro; P Ferranti; L Chianese
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of dairy research     Volume:  66     ISSN:  0022-0299     ISO Abbreviation:  J. Dairy Res.     Publication Date:  1999 Aug 
Date Detail:
Created Date:  1999-10-04     Completed Date:  1999-10-04     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  2985125R     Medline TA:  J Dairy Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  409-19     Citation Subset:  IM    
Istituto Zootecnico e Caseario per la Sardegna, Olmedo, Italia.
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MeSH Terms
Caseins / chemistry,  genetics*
Cheese* / analysis
Chemistry, Physical
Electrophoresis, Polyacrylamide Gel
Isoelectric Focusing
Mass Spectrometry
Milk / chemistry*
Particle Size
Physicochemical Phenomena
Reg. No./Substance:
0/Caseins; 0/Micelles

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