Effects of sheep alpha s1-casein CC, CD and DD genotypes on milk composition and cheesemaking properties.
J Dairy Res
; 66(3): 409-19, 1999 Aug.
Article
em En
| MEDLINE
| ID: mdl-10480079
ABSTRACT
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.
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Base de dados:
MEDLINE
Assunto principal:
Ovinos
/
Caseínas
/
Queijo
/
Leite
/
Genótipo
Idioma:
En
Ano de publicação:
1999
Tipo de documento:
Article