Efficient glucose-xylose co-utilization is critical for economical biofuel production from lignocellulosic biomass. To enable glucose-xylose co-utilization, a highly active xylose specific transporter without glucose inhibition is desirable. However, our understanding of the structure-activity/specificity relationship of sugar transporters in general is limited, which hinders our ability to eng...

What problem does it address? Biomass feedstocks are composed of hexose and pentose sugars locked into a higher-order structure. The most abundant of these sugars are glucose and xylose. Strains have been engineered to utilize xylose, but these strains do not grow well when xylose is the only sugar available. Xylose uptake into the cell is one of the limitations to efficient xylose utilization....

BACKGROUND Previous studies have reported that xylose selectively inhibited the activity of sucrase. Xylose supplementation may have a beneficial effect on the postprandial glycemic response. However, no studies have investigated patients with IFG or the effectivity of a dose of D-xylose less than 10 % (w/w). METHODS The present study determined the effect of xylose consumption on postprandia...

The production of acetone, butanol, and ethanol (ABE) by fermentation is a process that had been used by industries for decades. Two stage immobilized column reactor system integrated with liquid-liquid extraction was used with immobilized Clostridium acetobutylicum DSM 792, to enhance the ABE productivity and yield. The sugar mixture (glucose, mannose, galactose, arabinose, and xylose) represe...

AbstractWe investigate the solubility of guanine and uracil, two nucleic acid bases xylose, glucose, sucrose solutions in aqueous, It was discovered Guanine rises lockstep with glucose concentrations, However, this is not case for other reagents. increases below 1.5M reagent, it follows pattern: ribose(R)

A fungus capable of producing ethanol from various carbon substrates was screened for direct production lignocellulose. Fusarium moniliforme BIOTECH 3170 produced glucose, xylose, and cellobiose after three days with theoretical yields 86.4%, 68.6%, 45.4%, respectively. The coculture glucose xylose progressed sequentially at 79.2% the yield, both sugars completely consumed in five days. solid-s...

A number of previous studies determined dilute acid pretreatment conditions that maximize xylose yields from pretreatment or glucose yields from subsequent digestion of the pretreated cellulose, but our emphasis was on identifying conditions to realize the highest yields of both sugars from both stages. Thus, individual xylose and glucose yields are reported as a percentage of the total potenti...

BACKGROUND The heterotrophic and mixotrophic culture of oleaginous microalgae is a promising process to produce biofuel feedstock due to the advantage of fast growth. Various organic carbons have been explored for this application. However, despite being one of the most abundant and economical sugar resources in nature, D-xylose has never been demonstrated as a carbon source for wild-type micro...