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1 Northeast Dairy Foods Research Center, Department of Food Science, Cornell University, Ithaca, NY 14853
The effects of fortifying milk with low heat NDM on the composition, proteolysis, and functional properties of Mozzarella cheese during 50 d of storage at 4°C were determined. Three vats (180 kg of milk per vat) of cheese fortified at 0, 1.5, and 3% of NDM were made using a stirred-curd, no-brine method. The ratio of casein to fat was held constant by adjusting the fat content of the milk. The cheese making was replicated on 3 different d using a 3 x 3 Latin square design. Total N content in whey and stretching water increased as NDM fortification increased. The calcium content of the cheese increased as NDM fortification increased, and cheese moisture tended to decrease as fortification increased. Nitrogen that was soluble in 12% TCA and acetate buffer at pH 4.6 increased during storage for all cheeses. Fortification with 3% NDM decreased the rate of increase in both types of soluble N during refrigerated storage. Cheese made with 3% NDM fortification had a tendency toward firmer texture of unmelted cheese and higher apparent viscosity of melted cheese. Meltability and free oil formation were not affected by the fortification. As NDM fortification increased, cheese tended to show a slight increase in browning.
Key Words: Mozzarella cheese • nonfat dry milk fortification • composition • functional properties
Submitted on June 10, 1996
Accepted on July 9, 1997
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  A. Conte, C. Scrocco, M. Sinigaglia, and M. A. Del Nobile Innovative Active Packaging Systems to Prolong the Shelf Life of Mozzarella Cheese J Dairy Sci, May 1, 2007; 90(5): 2126 - 2131. [Abstract] [Full Text] [PDF]
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