摘要:
A method of stabilizing a useful protein by mixing a useful protein and an aqueous solution of a compound having the basic structure of arabic acid, and a stabilizied useful protein compositon containing a useful protein and a compound having the basic structure of arabic acid; gum arabic is preferred as a compound having the basic structure of arabic acid, and examples of a useful protein include cytokine and interferon; and a production method for canine interferon-&ggr; and stabilization thereof.
摘要:
Higher amount of L-threonine can be accumulated by the cultivation of certain microorganism belonging to the genus Providencia, having a resistance to methionine antagonist and having capabilities of producing L-threonine.
摘要:
A method of producing a sugar liquid includes hydrolyzing with a filamentous fungus-derived cellulase a product obtained by adding a water-soluble inorganic salt(s) to a pretreated product of cellulose to a final concentration of 5 to 35 g/L; and subjecting the hydrolysate to solid-liquid separation and filtering the obtained solution component through an ultrafiltration membrane to recover the filamentous fungus-derived cellulase as a non-permeate and to obtain a sugar liquid as a permeate.
摘要:
A method of producing a sugar liquid, includes filtering a cellulose-derived sugar liquid through one or more separation membranes selected from the group consisting of ultrafiltration membranes, nanofiltration membranes and reverse osmosis membranes, and washing the separation membrane(s) after filtration with warm water at a temperature of not less than 50° C.
摘要:
The invention provides a method of producing a chemical product through continuous fermentation which includes filtering a culture of a microorganism or cultured cells with a separation membrane to recover a product from a filtrate and simultaneously retaining a nonfiltered fluid in, or refluxing it to, the culture, and adding fermentation materials to the culture, wherein a porous membrane having an average pore size of 0.01 μm or more to less than 1 μm is used as the separation membrane and the filtration is conducted with a transmembrane pressure difference in the range of 0.1 to 20 kPa. According to this method, the fermentation productivity of the chemical product can be largely elevated at high stability and a low cost.
摘要:
A method of producing a filter aid includes: (A) obtaining a pretreated biomass by pulverization treatment and/or thermochemical treatment of a cellulose-containing biomass; (B) treating the pretreated biomass obtained in (A) with cellulase to obtain a cellulase-treated product; and (C) obtaining a solid content of the cellulase-treated product of (B).
摘要:
A method produces a sugar liquid by adding a filamentous fungus-derived cellulase to a pretreated product of cellulose to obtain a hydrolysate; adding waste molasses to said hydrolysate to obtain a mixed sugar liquid; and subjecting said mixed sugar liquid to solid-liquid separation and filtering the obtained solution component through an ultrafiltration membrane, to recover the filamentous fungus-derived cellulase as a non-permeate and to obtain a sugar liquid as a permeate.
摘要:
A method produces a sugar liquid by repeating a sugar liquid production process including (1) to (3): (1) adding a filamentous fungus-derived cellulase to cellulose to perform primary hydrolysis; (2) adding a fresh filamentous fungus-derived cellulase to the hydrolysate in Step (1) to perform secondary hydrolysis; and (3) subjecting the hydrolysate in Step (2) to solid-liquid separation to obtain a sugar liquid, from which a recovered enzyme is obtained; wherein the recovered enzyme obtained in Step (3) is used for Step (1) of the next and later sugar liquid production processes.
摘要:
Highly productive D-lactic acid fermentation uses a transformant obtained by introducing into a host cell a polynucleotide encoding a polypeptide according to any one of the following (A) to (C) in such a manner that the polypeptide is expressed, which polypeptide has a D-lactate dehydrogenase activity higher than those of conventional polypeptides: (A) a polypeptide having the amino acid sequence shown in SEQ ID NO:1 or 2; (B) a polypeptide having the same amino acid sequence as shown in SEQ ID NO:1 or 2 except that one or several amino acids are substituted, deleted, inserted and/or added, which polypeptide has a D-lactate dehydrogenase activity; and (C) a polypeptide having an amino acid sequence which has a sequence identity of not less than 80% to the amino acid sequence shown in SEQ ID NO:1 or 2, which polypeptide has a D-lactate dehydrogenase activity.
摘要翻译:高生产率D-乳酸发酵使用通过向宿主细胞中引入编码根据下列(A)至(C)中任一项所述的多肽的多核苷酸而获得的转化体,使得多肽表达, D-乳酸脱氢酶活性高于常规多肽的活性:(A)具有SEQ ID NO:1或2所示氨基酸序列的多肽; (B)具有与SEQ ID NO:1或2所示相同氨基酸序列的多肽,不同之处在于一个或几个氨基酸被取代,缺失,插入和/或添加,该多肽具有D-乳酸脱氢酶活性; 和(C)具有与SEQ ID NO:1或2所示的氨基酸序列具有不小于80%的序列同一性的氨基酸序列的多肽,该多肽具有D-乳酸脱氢酶活性。
摘要:
A method of producing lactic acid continuous fermentation including filtering a culture of polyploid yeast having a capacity to produce lactic acid through a porous membrane having an average pore size of not less than 0.01 μm and less than 1 μm, and recovering the product from the filtrate while the unfiltered liquid is retained in or returned to the culture and a fermentation feedstock is added to the culture.