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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Torklagringstemperatur för gryn- och rundpipig ost : Att finna en gemensam torklagringstemperatur för gryn- och rundpipig ost

Dahlqvist, Zandra January 2016 (has links)
Cheese making is an old method that originally has been used as a means to preserve milk. More than hundred types of cheeses are produced around the world, varying in bacterial cultures, pressing and ripening conditions. Grevé-, Herrgård- and Prästcheese are all examples of Swedish semi-hard cheeses. Prästcheese is dried and stored at 17-19 °C, while Grevé and Herrgård are stored at 10-12 °C. The aim of this study was to find a common dry-storage temperature for such cheeses. Selected properties such as weight loss and nutritional content of the cheeses at reference temperature (17-19 °C and 10-12 °C) were compared to cheeses stored in a common storage room at the temperature 15.0 ± 0.5 °C. The nutritional content was analysed by infrared spectroscopy using a FOSS MilkoScan FT120. The results showed a significant difference between experimental and reference cheeses weight losses for Präst 31%, Grevé 28% and Herrgård 28% (P <0.05), whereas no significant difference in weight loss was observed for Präst 17% and Herrgård 17% (P> 0.05). There was a significant difference in diameter between the experimental and reference cheeses (P <0.05). The diameter was significantly greater for cheeses that were stored at a higher temperature. There was no significant difference in the nutrient content for Präst 31 %, Präst 17%, 28%, Grevé 28 % and Grevé 17% (P> 0.05). For Herrgård 28%, there was a significant difference in the lactic acid concentration (P <0.05), but no significant difference in other nutrient content (P> 0.05). A final assessment is required when the cheeses are matured, by a sensory panel to conclude if the experimental cheeses are of a quality than can be accepted by the customer with regard to e.g. appearance, texture and taste.

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