thermotolerant phytase is produced by Rhizopus microsporus var. microsporus biofilm on an inert support using sugarcane bagasse as carbon source. The enzyme production is strictly regulated by the phosphorus content with optimal production at 0.5 mM of sodium phytate and KH2PO4
barley plants constitutively express HvPAPhy_a, high preformed phytase levels in the mature dry vegetative material of the 35S:PAPhy_a-plant. Expression analysis in different plant tissues, overview. Positive correlation between phytase activity and plants being heterozygous or homozygous for the HvPAPhy_a cisgene (the genomic clone of HvPAPhy_a including the native promoter and terminator of the gene)
fermentation is optimized by a response surface methodology based on the Box-Behnken design, production leads to maximum activity of phytase of 205.45 U/ml
fermentation is optimized by a response surface methodology based on the Box-Behnken design, production leads to maximum activity of phytase of 205.45 U/ml
solid-state fermentation, optimization of enzyme phytase production by Sporotrichum thermophile, method, detailed overview. Maximum phytase production (1881.26 U/g dry mouldy residue) in 2.5% Tween 80, 1.0% yeast extract, and 48 h of incubation period. Phytase production in the mixed substrate (sugarcane bagasse and wheat bran) fermentation enhances 11.6fold over the initial production as a consequence of optimization. Phytase titres are sustainable in flasks, trays and column bioreactor (1796 to 2095 U/g dry mouldy residue), thus validating the model and the process for large-scale phytase production. When the yeast extract is replaced with corn steep liquor (2% w/v), a sustained enzyme titre (1890 U/g dry mouldy residue) is attained, making the process cost-effective. Among all the detergents, Tween 80 supports a higher phytase production than others. The enzyme efficiently liberates nutritional components from poultry feed (inorganic phosphate, soluble protein and reducing sugars) in a time-dependent manner
solid-state fermentation, optimization of enzyme phytase production by Sporotrichum thermophile, method, detailed overview. Maximum phytase production (1881.26 U/g dry mouldy residue) in 2.5% Tween 80, 1.0% yeast extract, and 48 h of incubation period. Phytase production in the mixed substrate (sugarcane bagasse and wheat bran) fermentation enhances 11.6fold over the initial production as a consequence of optimization. Phytase titres are sustainable in flasks, trays and column bioreactor (1796 to 2095 U/g dry mouldy residue), thus validating the model and the process for large-scale phytase production. When the yeast extract is replaced with corn steep liquor (2% w/v), a sustained enzyme titre (1890 U/g dry mouldy residue) is attained, making the process cost-effective. Among all the detergents, Tween 80 supports a higher phytase production than others. The enzyme efficiently liberates nutritional components from poultry feed (inorganic phosphate, soluble protein and reducing sugars) in a time-dependent manner
both phytase and acid phosphatase enzyme activities in the root increase substantially in response to phosphorus-sufficient condition. The lowest enzyme activity is observed in the absence of any phosphorus source in the media. The level of acid phosphatase and phytase activities is more or less the same under various growth conditions
enrichment cultivation using minimum medium containing phytic acid as the sole phosphorus source. Phytase production by strain a13 is induced by the presence of phytic acid and repressed by the addition of glucose
enrichment cultivation using minimum medium containing phytic acid as the sole phosphorus source. Phytase production by strain a13 is induced by the presence of phytic acid and repressed by the addition of glucose
optimization of process parameters for phytase production by Enterobacter sp. ACSS leads to a 4.6fold improvement in submerged fermentation, which is enhanced further in fed-batch fermentation
ability of the Pantoea sp. 3.5.1 isolate to grow with insoluble Ca-phytate as the sole source of phosphorus, not due to the secretion of an extracellular phytase. Growth dynamics and extracellular and intracellular phytate-hydrolyzing activities of Pantoea sp. 3.5.1 culture, overview