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A classical chemical mutagenesis protocol was evaluated for increasing ß-galactosidase production by probiotic bacteria to improve their potential to treat symptoms of lactose malabsorption in h...
Fifteen media were evaluated to determine their suitability for selective enumeration of Streptococcus thermophilus, Lactobacillus delbrueckii ssp. bulgaricus, Lactobacillus acidophilus, and bifidobac...
The objective of this research was to clone and characterize the galactokinase gene (galK) from Streptococcus thermophilus F410. Partially digested genomic DNA was cloned into pBR322 and transformed i...
The effects were studied of agitation and addition of C02 and NaHCO3 on growth of two morphological variants of Streptococcus thermophilus CNRZ 368 that differed in their cell morphology and chain len...
Aminopeptidases from Lactobacillus delbrueckii ssp. bulgaricus and Streptococcus thermophilus were isolated. Enzymes were purified by chromatography on DEAE-cellulose and Sephadex G-150. The enzymes h...
The proteolysis degree in ewes' milk by 5 Streptococcus thermophilus and 4 Lactobacillus delbrueckii subsp. bulgaricus strains, as well as by their 20 combinations in ewes' milk yoghurt, was determine...

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