Development of the strategy known as consolidated bioprocessing (CBP) involves the use of a single microorganism to convert pretreated lignocellulosic biomass to ethanol through the simultaneous production of saccharolytic enzymes and fermentation of the liberated monomeric sugars. In this report, the initial steps toward achieving this goal in the fermentation host Zymomonas mobilis were inves...

Fast growing E. coli cells, in glucose-aerobic conditions, excrete fermentation by-products such as acetate. This phenomenon is known overflow metabolism and has been observed a diverse range of microorganisms. In this paper, we study chemostat model subject to metabolism: if the substrate uptake rate (or specific growth rate) above threshold (different from zero), then secretion by-product hap...

Algae have long been used to augment plant productivity through their beneficial effects. Alginate oligosaccharide is believed to be one of the important components to enhance growth and crop yield. In this study, we isolated and characterized a Bacillus litoralis strain, named Bacillus M3, from decayed kelps. We further demonstrated that the M3 strain could secrete alginate lyase to degrade al...

Phaseolus vulgaris L. beans have been characterized as a nearly perfect food in all around the world. It is consider functional in terms of providing nutrients and energy to sustain daily life. Red bean contain high protein, mineral, fibres and chemically diverse micronutrient composition, which can be affected by processing. The main aim of this work is to investigate the effect of open and co...

Arachidonic acid is an essential fatty acid in human nutrition. In the present study, production of arachidonicacid by Mortierella alpina CBS 754.68 was evaluated in submerged fermentation. The fermentation variableswere selected in accordance with the Plackett-Burman (PB) design and further optimized via response surface methodology (RSM). Five significant variables, namely glucose...

In this work substrate feeding rate to a fermentation of lignocellulose hydrolysate for production of ethanol has been studied. During hydrolysis of lignocellulose inhibitors are formed that effect the microorganism (here Saccharomyces cerevisiae) that ferments the sugar to ethanol in a negative way. To make the hydrolysate fermentable the inhibitors are often removed by detoxification prior to...

High rosmarinic acid (RA) productivity has been achieved by applying jasmonic acid and yeast extract elicitors to the in vitro sprout culture of Orthosiphon aritatus (IOSC). The highest RA accumulation from three solvents was detected in IOSC after treatment with yeast extract (5 g/L). HPLC analysis clearly confirmed a drastic increase in RA subjected to yeast extract elicitation. Therefore, th...

As a clean and renewable source of energy, ethanol is a promising alternative to fossil fuels.1 Especially lignocelluloses, as raw material for ethanol production, have gained great interest during these years.2 Production of bio-ethanol will help to cope with the over-consumption of fossil fuels and further work for the reduction of carbon dioxide emissions. Lignocelluloses (crop residue, cell...

Polyphenolic compounds are a group of secondary metabolites in plants; these molecules widely distributed fruits, vegetables, and herbs can be found the vacuoles plant cells. The current trend is their extraction to study applications several areas, such as food, cosmetic, pharmacology industry. This review article presents critical analysis polyphenol using solid-state fermentation. parameters...