Protoplasts of Aureobasidium pullulans are capable of producing pullulan. Biosynthesis of the polymer pullulan required induction with kinetics similar to those of whole cells. The protoplasts also produced a heteropolysaccharide component containing mannose, glucose, and galactose. The relative proportions of the pullulan and heteropolysaccharide fractions were a function of glucose concentrat...

The presence of yeasts in milk may cause physical and chemical changes limiting the durability and compromising the quality of the product. Moreover, milk and dairy products contaminated by yeasts may be a potential means of transmission of these microorganisms to man and animals causing several kinds of infections. This study aimed to determine whether different species of yeasts isolated from...

although more than 3000 antibiotics have been reported from actinomycetes/ higher fungi; biotechnological potential of yeasts and yeast-like fungi with respect to production of antimicrobial compounds has not been sufficiently investigated. we examined the antimicrobial activity of 11 strains of aureobasidium pullulans (two new isolates and nine standard strains). all the strains of aureobasidi...

Wild yeasts on the surface of various fruits including grapes were surveyed to obtain yeast strains suitable for fermenting a novel wine with higher alcohol content and supplemented with rice starch. We considered selected characteristics, such as tolerance to alcohol and osmotic pressure, capability of utilizing maltose, and starch hydrolysis. Among 637 putative yeast isolates, 115 strains exh...

In order to determine the fungi causing kernel rot on chestnut, 150 chestnut kernels were collected from forests of Düzce province. Ninety-eight showed necrosis at various sizes, while rest 52 healthy in appearance. Twelve recovered necrotic kernels, four kernels. The most frequently isolated fungus was Gnomoniopsis smithogilvyi, obtained 24 It also 5 and produced when inoculated intact Besides...

During the growth of the yeastlike fungus Pullularia pullulans on glucose as sole carbon source, the cell-mass does not increase concomitantly with the elaboration of the extracellular polysaccharide pullulan, but precedes it. The conditions generated in the culture medium which activate the secretion of polysaccharide have been sought for, and, in particular, the roles of extracellular pH and ...

BACKGROUND Polymalic acid (PMA) has many applications in food and medical industries. However, so far it has not been commercially produced by fermentation. Therefore, it is very important how to develop an economical process for a large scale production of PMA by one step fermentation. RESULTS After over 200 strains of Aureobasidium spp. isolated from the mangrove systems in the South of Chi...

Aureobasidium pullulans, popularly known as black yeast, is one of the most widespread saprophytic fungus associated with wide range of terrestrial and aquatic habitats. The fungus has widely been employed in production of an economically important polysaccharide pullulan. Total 50 isolates of Aureobasidium pullulans were isolated from different flowers and leaves samples, out of which 10 therm...

Although more than 3000 antibiotics have been reported from Actinomycetes/ higher fungi; biotechnological potential of yeasts and yeast-like fungi with respect to production of antimicrobial compounds has not been sufficiently investigated. We examined the antimicrobial activity of 11 strains of Aureobasidium pullulans (two new isolates and nine standard strains). All the strains of Aureobasidi...

Department of Botany and Microbiology, St. Aloysius College (Autonomous), Jabalpur, M.P., India Department of Microbiology (DST-FIST Supported, Center of Excellence), Dr. R. M. L. Avadh University, Faizabad, U.P., India Department of Biochemistry, Dr. R. M. L. Avadh University, Faizabad, U.P., India D.G.M. Environment (ETP and Biocompost), Balrampur Distillery, Bhabhanan, Basti, U.P., India *Co...