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Showing 1 to 4 of 4 for “"1003 Industrial Biotechnology"”.
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Characterisation of stress responses in Lactobacillus paracasei and Bifidobacterium animalis (syn. lactis)
This thesis describes a study of the nature of the responses to stress, particularly acid stress, in Lactobacillus paracasei and Bifidobacterium anitnalis (syn. lactis). The aims of the study were validate the identification of the bacteria being studied, to determine the nature of their stress …
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The influence of bacteriocin-producing probiotic starter cultures on fermentation time and post-acidification in yoghurt
The main objective of this study was to use bacteriocin producing Lactobacillus acidophilus strain LA-5 for the in situ lysis of Lactobacillus delbrueckii subsp. bulgaricus for reducing fermentation time, enhancing viability and survival of probiotic bacteria in fermented dairy foods, and for …
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The improvement of physical properties of yoghurts by varying casein/whey protein ratio and EPS-producing starter cultures
The overall objective of this study was to investigate effects of variation in casein to whey protein ratios and types of exopolysaccharide producing starter cultures on physical properties of yoghurts made at 9% and 14% total solids during 28 days of storage at 4°C. There are three main parts of …
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Parameters influencing yeast-mediated reactions in an organic solvent
The yeast-mediated reduction of a series of 3-oxobutanoate esters (methyl, ethyl, isopropyl, butyl, sec-hutyl, tert-hutyl and benzyl) was performed in petroleum ether at room temperature over a 24h period. The procedure was shown to be a simple and effective method for the stereoselective …