Use of Raw, Thermized and Pasteurized Cow’s Milk for Making Siirt Herbed Tulum Cheese.

Abstract

In this study, Siirt herby tulum cheese was produced using raw, thermalized and pasteurized forms of cow milk taken from a farm. Production and packaging were completed within 24 hours. The pasteurization was made at 72˚C for 1 min, and the termization at 68˚C for 1 min. Cloth formation was made at 32˚C for 90 min. The clot was broken into a 1x1x1 cm pieces, left for 45 min, and then filtered for 15 min. First pressure was applied to the strained curd, to which 1% salt was added, under half the weight of milk for 12 hours. Sirmo (Allium sp.) was added to the curd and a second pressure was applied for 12 hours under a weight equal to the weight of the milk used. Chickpea-sized cheese samples were tightly pressed in a plastic screw cap package, and then ripened at 4 °C for 120 d. The curd efficiency was calculated using the ratio of the amount of curd to the milk. The % yield of raw, thermized and pasteurized milk curds was determined as 26.7, 38.6 and 21.1, respectively. Similar dry matter levels (average 45%) were detected in all three cheeses. It was observed that pasteurized milk cheeses reached appropriate microbiological quality on the first d, pureed milk cheeses on the 60th d, and raw milk cheeses on the 90th d. During the process, the pH of raw milk cheeses increased from 5.4 on the first d to 7.1 on the 120th d. In pasteurized milk, these values were measured as 6.1 and 5.9. Adequate acidity and pH improvement was observed by using pasteurized cow's milk. It was seen that Siirt herby tulum cheese can be produced using pasteurized cow's milk, with a minimum of 20% fat, 20% protein, 45% dry matter and a maximum of 2% salt. The proposed method may be useful for more standard, hygienic and economical production. Further research on the subject and development of the ideal industrial production process can be achieved.