Seguiment del pH durant la maduració dels formatges i elaboració d'un nou formatge

Ripening cheese is one of the most important stages in the development due to the transformations that it undergoes. Microorganisms are involved in biochemical reactions caused by enzymes as well as chemical reactions. Lately from the veterinary inspection of Catalonia, it is discussed the possible...

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Zusammenfassung:Ripening cheese is one of the most important stages in the development due to the transformations that it undergoes. Microorganisms are involved in biochemical reactions caused by enzymes as well as chemical reactions. Lately from the veterinary inspection of Catalonia, it is discussed the possible sanitary risk of cheese made from raw milk, endangering the health of consumers. The aim of this paper is double, on the one hand, to monitor the pH during the maturation of the 12 types of cheese produced in the Mas d'Eroles dairy farm, since this is the main parameter that regulates the survival of microorganisms. These types of cheese make use of most technologies employed in the production of artisan cheese in Catalonia. On the other hand, the other objective is to develop a new cheese with the rind treated with beer, in order to increase the offer of the cheese factory and find a better position in the market. After obtaining the results we can conclude that the level of security is at least as high as those of pasteurized milk, as optimum levels of pH are achieved so that there is no presence of 0pathogenic microorganisms, taking into account, at the same time, other aspects of the preparation of cheese that have an impact on the survival of microorganisms. As for the new cheese, the result is not yet final; it is necessary to do some tests and changes in processing technology before having the final product well defined, although the cheese at this stage is very acceptable. One aspect worth improving is to have better control of the draining process for a cheese with the desired sensory characteristics. Keywords: cheese ripening, hygiene, pH, whey drain. La maduració dels formatges és una de les etapes més importants de la seva elaboració degut a les transformacions que aquests pateixen. Els microorganismes intervenen en les reaccions bioquímiques ocasionades pels enzims així com en les reaccions químiques. Darrerament des de la inspecció veterinària de Catalunya es discuteix el possible risc sanitari dels formatges elaborats amb llet crua, posant en risc la salut dels consumidors. L'objectiu d'aquest treball és doble, d'una banda fer el seguiment del pH durant la maduració dels 12 formatges que s'elaboren a la formatgeria Mas d'Eroles, ja que aquest és el principal paràmetre que regula la supervivència dels microorganismes. Aquests formatges recullen la majoria de tecnologies emprades en la elaboració de formatges artesans a Catalunya. Per l'altra banda