Microbiological and biochemical characteristics of Kashkaval cheese produced using pasteurised or raw milk
2019
Pappa, Eleni C. | Kondyli, Efthymia | Samelis, John
Microbiological quality and biochemical changes of Kashkaval cheese manufactured using sheep's raw milk without starter addition or pasteurised milk with an added commercial starter were studied. Mature cheeses had pH values 5.0–5.3, salt content 2.1–2.7%, protein content 23.3–25.1%, moisture content 36.8–39.5%, fat content 28.0–32.2%, and ash content around 5.0%. In raw milk cheeses, mesophilic non-starter lactobacilli prevailed followed by enterococci. In pasteurised milk cheeses Lactococcus lactis starter prevailed. All cheeses were safe according to the criteria in Regulation (EC) 1441/2007. The proteolysis index was around 20%. Butyric, myristic, palmitic, stearic and oleic were the principal free fatty acids in both cheeses. Ketones were abundant in pasteurised milk cheeses and esters in mature raw milk cheeses. Pasteurisation did not affect (P > 0.05) the physicochemical composition and the proteolysis of cheeses. Raw milk cheeses showed higher levels (P < 0.05) of lipolysis than pasteurised milk cheeses.
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