Impact of genetic variants of milk proteins on chymosin-induced gelation properties of milk from individual cows of Swedish Red dairy cattle

Summary, in English

Chymosin-induced gelation properties of the milk of around 400 Swedish Red dairy cows was investigated with the aim of identifying genetic protein variants that influence chymosin-induced gelation for optimisation of cheese milk through breeding practices. The variation in chymosin-induced gelation properties was shown to be large in the milk of Swedish Red and there was a high frequency of cows producing non-coagulating milk, 18%. The present study showed that the common composite beta-kappa-casein genotypes A(1)A(2)/AE and A(2)A(2)/AA were associated with both poor gelation properties and non-coagulation in the milk of Swedish Red. The present study suggests that if the frequencies of composite genotypes A(1)A(2)/AE and A(2)A(2)/AA were decreased in the Swedish Red population in favour for A(1)A(1)/AA and A(1)A(1)/AE, this could have a positive effect on the rennetability of the milk. (C) 2014 Elsevier Ltd. All rights reserved.

• Author: Frida Gustavsson; A. J. Buitenhuis; Maria Glantz; H. Stalhammar; Helena Lindmark Månsson; N. A. Poulsen; L. B. Larsen; A. Andren; Marie Paulsson
• Department/s: Department of Food Technology, Engineering and Nutrition
• Publishing year: 2014
• Language: English
• Pages: 102-107
• Publication/Series: International Dairy Journal
• Volume: 39
• Issue: 1
• Links: http://dx.doi.org/10.1016/j.idairyj.2014.05.007
• Document type: Journal article
• Publisher: Elsevier
• Topic: Food Engineering
• Status: Published
• ISBN/ISSN/Other: ISSN: 0958-6946