Richard N. Okagbue

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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)
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)
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