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Journals and Conferences
Distilled water and 0.02 molar citrate buffer pH 7.0, are suitable autolysing systems for the red yeast P. rhodozyma. Autolysis renders astaxanthin extractable from the yeast. Of six strains of the yeast tested, 67–484 was most susceptible to autolysis.
Alfalfa residual juice (ARJ) supported good growth of the yeast Phaffia rhodozyma but formation of astaxanthin was inhibited. Supplementary nutrients did not reverse the inhibition, indicating that the the juice probably contained some inhibitor of astaxanthin biosynthesis. Six strains of P. rhodozyma were tested and found to be susceptible to the… (More)
A total of sixty samples of bottled water processed in Zimbabwe by three companies, were analysed microbiologically, to assess the relative safety of locally processed bottled water. The samples were from different batches and from different storage conditions and the analyses were for total viable counts and coliforms. Four (6.7%) and seven (11.7%) samples… (More)
Twenty-fiveBacillus isolates comprising eight species fromdaddawa, daddawansoya, oglrl, okplhe andugba (all Nigerian fermented plant proteins) all produced glutamic acid in varying concentrations when grown in a basal medium. Glutamic acid release during the course of termentation indaddawa showed a corresponding release pattern by the fermentingBacillus… (More)
Production of cell mass and astaxanthin by the yeast Phaffia rhodozyma was inhibited by saponin. The inhibition was partially reversed by oleic and linoleic acids and by ergosterol and cholesterol, thereby suggesting a possible interference of saponin with the yeast cell membrane.
Starter cultures consisting ofStreptococcus diacetilactis, Strept. cremoris, Lactobacillus brevis andSaccharomyces cerevisiae were tested singly and in mixtures for ability to ferment milk to producenono with organoleptically acceptable qualities. Only mixed cultures containing eitherStrept. diacetilactis orStrept. cremoris andL. brevis were suitable.… (More)
Lytic enzyme production byBacillus circulans WL-12 and modification of the red yeastPhaffia rhodozyma in mixed culture, is feasible on some simple sugars other than glucose. Advantages of the mixed culture are discussed.