The inhibition of growth by octanoic or decanoic acids, two subproducts of ethanolic fermentation, was evaluated in Saccharomyces cerevisiae and Kluyveromyces marxianus in association with ethanol, the main product of fermentation. In both strains, octanoic and decanoic acids, at concentrations up to 16 and 8 mg/liter, respectively, decreased the maximum specific growth rate and the biomass yie...

Fermentation characteristics of four strains of brewer's yeast (Saccharomyces cerevisiae strain 70424, S. rouxii strain 2535, S. rouxii strain 2531 and Saccharomyces ludwigii strain 3447) in Yeast Moldbroth containing four different fermentable sugars (glucose, fructose, maltose, or sucrose) were studied. The aim was to consider the suitability of different strain/sugar treatments for the produ...

Thermoanaerobacterium sp. strain RBIITD was isolated from contaminated rich growth medium at 55°C in an anaerobic chamber. It primarily produces butyrate as a fermentation product from plant biomass-derived sugars. The whole-genome sequence of the strain is 3.4 Mbp, with 3,444 genes and 32.48% GC content.

BACKGROUND Hydrolytic enzymes, such as cellulases and proteases, have various applications, including bioethanol production, extraction of fruit and vegetable juice, detergent formulation, and leather processing. Solid-substrate fermentation has been an emerging method to utilize low-cost agricultural residues for the production of these enzymes. Although the production of carboxy methyl cellul...

This study determined the effects of selenium on the growth of Fusarium strains and the effects of products extracted from the fungal cultures on relevant indicators of chondrocytes injury. The results showed that selenium supplementation resulted in differential effects on the mycelial growth of the strains. Levels of the chondrocyte injury indicators, including cell viability, proteoglycan an...

Two novel antifungal antibiotics, PF1163A and B, were isolated from the fermentation broth of Penicillium sp. They were purified from the solid cultures of rice media using ethyl acetate extraction, silica gel and Sephadex LH-20 column chromatographies. PF1163A and B showed potent growth inhibitory activity against pathogenic fungal strain Candida albicans but did not show cytotoxic activity ag...

Enzymes are considered as nature’s catalysts and the most enzymes are produced by the fermentation of bio based material. Lipases are unique in catalyzing the hydrolysis of fats into fatty acids and glycerol at the water-lipid interface and reversing the reaction in non-aqueous media. Lipolytic enzymes are involved in the breakdown and thus in the mobilization of lipids within the cells of indi...

In the present study E. coli was used for the production of alkaline protease in eight different fermentation media. This bacterium was isolated from soil sample and screened for protease production. The enzyme production from E. coli was estimated using casein as substrate and its molecular weight was determined by SDS-PAGE. The enzyme activity was also studied at different parameters like pH,...

The value of identification of suspicious organisms when cultures are employed in the diagnosis of gonorrhea is still being debated by many. Some believe that fermentation tests are essential; others consider them necessary only in doubtful cases. The latter consider the source of infection, the fact that colonies are oxydase-positive and consist of bean-shaped gram-negative diplococci as suffi...

Kinetic parameters of growth and laccase activity of five ATCC strains of Pleurotus ostreatus in submerged fermentation were evaluated. The best strain for laccase production and the time of maximum laccase activity were also determined. The greatest laccase activity (37490 U/L), laccase productivity (78 U/L h), specific growth rate (0.026/h), and specific rate of laccase production (119 U/gX h...