Competitive microflora:The reduction of the number of undesirable micro-organisms by lowering the pH, consumption of nutrients, and production of bacterial antimicrobial substances (such as nisin, other bacteriocins and hydrogen peroxide). Usually, this microbiological controlmeasure is applied by choice of starter cultures. The efficiency is determined by many factors, including the speed and level of pH reduction and variations in the pH level.“Cooking” of cheese curd:The application of heat to cheese curd, mainly for technical purposes. The heat treatment has a lower intensity than thermization but stresses micro-organisms to become moresusceptible to other microbiological control measures.
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