Microbial polysaccharides are of great biotechnological and commercial interest have wide application in the food, cosmetic medicine industries. Exopolysaccharide (EPS) production by yeast Cryptococcus laurentii SD7, isolated from fresh water molluscs, was studied using agro-industrial byproducts as substrates submerged fermentation. The Central Composite Design (CCD) 23 used to study influence...

Production of fermented functional foods containing micronutrients is required for their health beneficial properties. The impact of 11 process variables on vitamin B12 production in a dairy beverage containing propionic acid was investigated. Propionibacterium freudenreichii ssp. shermanii was applied in a 3-l fermentor in the fed-batch fermentation system. The most suitable conditions for...

A practical method for the production of calcium 2-keto-l-gulonate (an intermediate in the Reichstein synthesis of l-ascorbic acid) from d-glucose has been established by using a two-stage fermentation system. d-Glucose was first converted to calcium 2,5-diketo-d-gluconate by a mutant strain of Erwinia sp. in a medium containing d-glucose, corn steep liquor, (NH(4))(2)HPO(4), and CaCO(3). After...

Strain HIL Y-9031725 was isolated from a soil sample collected in India. The strain was identified as belonging to the genus Streptomyces using the methods described by Shirling and Gottlieb.2) A loopful of mature slant culture of Streptomyces Y-9031725 was inoculated into Erlenmeyer flasks (500 ml capacity) containing 100 ml of seed medium consisting of glucose 1.5%, soyabean meal 1.5%, corn s...

BACKGROUND The Rapid Bioconversion with Integrated recycle Technology (RaBIT) process reduces capital costs, processing times, and biocatalyst cost for biochemical conversion of cellulosic biomass to biofuels by reducing total bioprocessing time (enzymatic hydrolysis plus fermentation) to 48 h, increasing biofuel productivity (g/L/h) twofold, and recycling biocatalysts (enzymes and microbes) to...