background l-tryptophan is an important ingredient in medicines, especially in neuromedicines such as antidepressants. many commercial processes employ various microorganisms with high tryptophan synthase activity to produce l-tryptophan from indole and l-serine, but these processes are very costly due to the costs of precursors, especially l-serine. objectives for this reason, we studied the a...

The aim of this study was to evaluate the effect of replacing corn grain for sugar cane molasses (MO) or glucose syrup (GS) in the starter concentrate on performance and metabolism of dairy calves. Thirty-six individually housed Holstein male calves were blocked according to weight and date of birth and assigned to one of the starter feed treatments, during an 8 week study: i) starter containin...

The development of appreciable brine acidity in cucumber salt stock is necessary for curing the cucumbers and maintaining a desirable color during subsequent storage of stock. Several investigators (Le Fevre, 1920,1922; Joslyn, 1929; Fabian et al., 1932; Fellers et al., 1937; Fellers, 1939) recommended the addition of sugar to cucumber fermentations with the object of stimulating the acid formi...

optimum uses of water and nitrogen resources are the most important factors in agricultural systems due to limitations of agricultural inputs especially water. in order to investigate the effect of different levels of nitrogen fertilizer and irrigation on efficiency and productivity of water consumption in three crop (sugar beet, corn and sesame) an experiment was carried out as strip split plo...

BACKGROUND The expression of biomass-degrading enzymes (such as cellobiohydrolases) in transgenic plants has the potential to reduce the costs of biomass saccharification by providing a source of enzymes to supplement commercial cellulase mixtures. Cellobiohydrolases are the main enzymes in commercial cellulase mixtures. In the present study, a cellobiohydrolase was expressed in transgenic corn...

Story in Brief Corn steep liquor (CSL) and fermented ammoniated condensed whey (FACW) were compared to cottonseed meal (CS1\I) as protein sources f())' wintering 6 I lactating first-calf Hereford heifers and 32 yearling HerefOl'd heifers on nati\'e range. Cattle were allotted by weight and individually fed 6 days per week fill' 12 weeks one of four protein treatments: negative control (I\C). po...

During the production of grape wine, the formation of thick leathery pellicle/bacterial cellulose (BC) at the airliquid interface was due to the bacterium, which was isolated and identified as Gluconacetobacter hansenii UAC09. Cultural conditions for bacterial cellulose production from G. hansenii UAC09 were optimized by central composite rotatable experimental design. To economize the BC produ...