Abstract
The effect of the inoculation of a starter culture and vacuum packaging (during the resting stage) on dry-cured ham appearance, microbiological and physicochemical parameters was studied. Half of the 36 processed hams were inoculated, after salting, with a commercial starter culture containing lactic-acid bacteria, Gram-positive catalase-positive cocci and yeasts. 18 hams per group (inoculated and non-inoculated) remained vacuum packaged during resting. Microbiological analyses were carried out on the lean surface during processing, on subcutaneous fat tissue at the drying stage and on lean tissue in the finished product. Appearance was evaluated during processing. Physicochemical analyses (NaCl, H 2O, proteolysis index, a w) were done on Semimembranosus and Biceps femoris in the final product. Inoculation caused a reduction of mould growth and oil drip. Vacuum packaging induced increased proteolysis and increases in all microbial counts and a reduction of oil drip, mould growth and weight loss during processing.
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