The correlations between the yield of intracellular polysaccharide (LIP), the yield of extracellular polysaccharide (LEP) and the biomass of a Lachnum YM281 in submerged fermentation were studied. Results showed that there was a significant linear relationship between the yield of LIP (Y) and the biomass (Z): Z=12.561Y-0.0148 (R=0.985). The yield of LIP (Y) and yield of LEP (X) were positively ...

The Present work reports an economic and higher yield production of Citric acid by aerobic submerged fermentation of sucrose using Aspergillus Niger-NCIM 705. Regression analysis was carried out for the Univariate search experimental data using DATAFIT software to evaluate the degree of effect of each of the variables: Initial sucrose Concentration, Fermentation Temperature, Stirrer speed, oxyg...

Proteases hydrolyze the peptide bonds of proteins into peptides and amino acids, being found in all living organisms, and are essential for cell growth and differentiation. Proteolytic enzymes have potential application in a wide number of industrial processes such as food, laundry detergent and pharmaceutical. Proteases from microbial sources have dominated applications in industrial sectors. ...

Amylases are one of the main enzymes used in industry. Such enzymes hydrolyze the starch molecules into polymers composed of glucose units. Amylases have potential application in a wide number of industrial processes such as food, fermentation and pharmaceutical industries. α-Amylases can be obtained from plants, animals and microorganisms. However, enzymes from fungal and bacterial sources hav...

Amylase is an enzyme that catalyzes the breakdown of starch into sugars and plays a pivotal role in a variety of areas like use as digestives, for the production of ethanol and high fructose corn syrup, detergents, desiring of textiles, modified starches, hydrolysis of oil-field drilling fluids, and paper recycling. In the present work, solid state fermentation (SSF) for α -amylase production h...

Modified solid-state fermentation (MSSF) of tannin-rich substrates for production of tannase and gallic acid was carried out using fungal co-cultures. Tannin acyl hydrolase or tannase is an enzyme produced extracellularly in solid state fermentation by various fungi. The solid-state fermentation offers a number of advantages over submerged and liquid conventional fermentation for the enzyme pro...

Corn stover was pretreated with lime and shock, a mechanical process that uses a shockwave to alter the biomass structure. Two pretreatments (lime-only and lime + shock) were evaluated using enzymatic hydrolysis, batch mixed-culture fermentations, and continuous countercurrent mixed-culture fermentation. In a 120-h enzymatic hydrolysis, shock pretreatment increased the glucan digestibility of s...

Penicillium spp. are known to harbor a wide array of secondary metabolites with cryptic bioactivities. However, the metabolomics of these species is not well-understood in terms of different fermentation models and conditions. The present study involved metabolomics profiling and transcriptomic analysis of Penicillium expansum 40815 under solid-state fermentation (SSF) and submerged fermentatio...

The production of lipids by oleaginous yeast and fungi becomes more important because these lipids can be used for biodiesel production. To understand the process of lipid production better, we developed a model for growth, lipid production and lipid turnover in submerged batch fermentation. This model describes three subsequent phases: exponential growth when both a C-source and an N-source ar...

Brewer's spent grain and corn steep liquor or yeast extract were used as the sole organic forms for proteinase production by Streptomyces malaysiensis in submerged fermentation. The influence of the C and N concentrations, as well as the incubation periods, were assessed. Eight proteolytic bands were detected through gelatin-gel-electrophoresis in the various extracts obtained from the differen...