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Įvairių pasterizacijos režimų ir sausųjų baltyminių medžiagų įtaka kefyro kokybei / The influence of various pasteurization modes and albuminous milk products on the quality of kefirZinkutė, Vaida 15 April 2005 (has links)
The aim of this work is to research various pasteurization regimes and albuminous milk products influence on the quality of kefir. The research was made in the Food Institute of Kaunas Technology University, 8 aliquots of kefir were made and evaluated in laboratory conditions. These raw milk pasteurization regimes were applied- instantaneous pasteurization (in 87-90°C temperature), pasteurization maintaining to 30 min. (in 87-90°C temperature), pasteurization maintaining to 60 min. (in 87-90°C temperature). The raw milk of these aliquots was enriched with 1%, 2%, 3% fat-free milk powder and with 1%, 2%, 3% whey powder ripening the mixture to 60 min. in 87- 90°C pasteurization temperature. Physical and chemical, microbiological indicators and sensual qualities were determinated by standard methods.
It is determinated that the long-lasting milk pasteurization (maintaining to 30-60 min. in 87- 90° C pasteurization temperature), compared with the instantaneous pasteurization, increases viscosity of the product and enriches sensual qualities. Enriching of milk with whey powder in production of kefir stimulates the activity of milk acid bacteria. In comparison, aliquots enriched with 1%, 2%, 3% whey powder, it is determinated that the best is aliquot of kefir among which production it is interspersed 3% whey powder; physical-chemical and sensual qualities of the product signally better then. In comparison all the data of the experiment, the kefir characterized with the best... [to full text]
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