Provided is a method for safely and selectively producing a substrate culture product including a large amount of a desired degrading enzyme. A method for producing a substrate culture product used for feedstuff includes inoculating filamentous fungi bred so that a target degrading enzyme is produced by self-cloning in high productivity on a substrate, and producing the substrate culture product having functionality by ventilating the substrate to carry out solid culture.

The present invention relates to a synthetic phytase which is a shuffling product comprising biobricks of at least two reference phytases of Obesumbacterium and/or Hafnia.

Disclosed herein is a method for expressing phytase in a filamentous fungus by using an optimized Escherichia coli phytase gene having a nucleotide sequence as shown in SEQ ID NO. 7 and a signal peptide having a nucleotide sequence as shown in SEQ ID NO. 12.

Disclosed is a thermostable phytase, in which at least one pair of introduced disulfide bonds is included in the amino acid sequence of wild-type Escherichia coli phytase or mutant Escherichia coli phytase, and after the introduction, the properties of the phytase can be improved, especially the heat stability, steam stability and granulation stability, which are superior to those of the existing wild-type or mutant phytase; compared to the engineered phytase in which disulfide bonds are introduced, the heat stability is also significantly improved.

The present invention relates to processes for producing fermentation products from starch-containing material, wherein an alpha-amylase and a thermostable hemicellulase is present and/or added during liquefaction. The invention also relates to compositions suitable for use in processes of the invention.

To provide a method for efficiently utilizing bacterial cells and unused raw materials for culture in the manufacture of fermentation products.

A method for manufacturing a fermentation product by culturing a microorganism, the method comprising steps (A) to (D): step (A) of culturing the microorganism with a first culture medium; step (B) of passing a culture solution containing cultured bacterial cells, raw materials for culture, and the fermentation product through an adsorption tower packed with an adsorbent capable of adsorbing the fermentation product to adsorb the fermentation product from the culture solution to the adsorbent, and then collecting an effluent containing the bacterial cells and the raw materials for culture flowing out from the adsorption tower, wherein a relationship among a size (short diameter) d of the bacterial cell, a pore size D1 of the adsorbent, and a minimum void size D2 between adsorbent particles, D1<d<D2 is satisfied; step (C) of bringing an eluent into contact with the adsorbent to elute the fermentation product; and step (D) of culturing the microorganism with a second culture medium using the collected effluent containing the bacterial cells and the raw materials for culture.

Provided are mutants PHY1, PHY4 and PHY5 of a wild-type phytase APPA. After being treated for 10 min at 80 C., the residual enzyme activities of the mutants PHY1, PHY4 and PHY5 are respectively higher by 33.85%, 53.11% and 75.86% compared with that of APPA-M; after being treated for 5 min at 85 C., the residual enzyme activities of the mutants PHY1, PHY4 and PHY5 are respectively higher by 14.89%, 28.45% and 44.94% compared with that of APPA-M, and the heat resistance of these mutants is significantly higher than that of APPA-M.

The present disclosure relates to methods for using one or more polypeptides with phytase activity in grain processing, ethanol, and biofuel production.

The present invention relates to a method of producing a recombinant polypeptide a filamentous fungus which is genetically modified to decrease or eliminate the activity of cellulase regulator 2 (CLR2) and to express said recombinant polypeptide. The method further relates to a filamentous fungus Myceliophthora thermophila, which is genetically modified to decrease or eliminate the activity of CLR2 and the use of this filamentous fungus in the production of a recombinant polypeptide.

The present invention relates to variant phytase enzymes and their use thereof.