Patent application number | Description | Published |
20110004018 | PROCESS FOR PRODUCING DIAMINE AND POLYAMIDE - A method for producing a diamine includes purifying a diamine from an aqueous solution containing a diamine salt by adding an alkaline substance to the aqueous solution and then filtering the resulting solution by allowing the solution to pass through a nanofiltration membrane to remove the salt, thereby obtaining an aqueous diamine solution. | 01-06-2011 |
20110177551 | METHOD FOR PRODUCING A CHEMICAL PRODUCT AND CONTINUOUS FERMENTATION APPARATUS - To control flow velocity of a culture liquid inside a membrane separation tank without giving influences to culture conditions in the fermentation tank, and also suppress precipitation of microorganisms or culture cells so that the production efficiency of the chemical product can be improved, in a method for producing a chemical product including the steps of: cultivating microorganisms or culture cells in a fermentation tank; transferring a culture liquid from the fermentation tank to a membrane separation tank so as to filter the culture liquid through a separation membrane; and collecting a fermentation product from a filtration liquid as the chemical product while refluxing an unfiltered culture liquid that has not been filtered so as to be joined to the culture liquid on an upstream side of the membrane separation tank, one portion of the culture liquid to be transferred from the fermentation tank is allowed to bypass the membrane separation tank depending on a pressure at the culture liquid flow-in side of the membrane separation tank. | 07-21-2011 |
20110263811 | METHOD FOR PRODUCING LACTIC ACID AND METHOD FOR PRODUCING POLYLACTIC ACID - Lactic acid is obtained by a method including (A) a step of continuous fermentation wherein a fermentation culture medium of a microorganism having an ability of lactic acid fermentation is filtered through a porous membrane having an average pore size of not less than 0.01 μm and less than 1 μm with a transmembrane pressure difference within the range of 0.1 to 20 kPa, and the permeate is collected, while retaining the non-permeated liquid in or returning the non-permeated liquid to the culture, and adding a fermentation feedstock to the culture; (B) a step of filtering the permeate obtained in Step (A) through a nanofiltration membrane; and (C) a step of distilling the permeate obtained in Step (B) under a pressure of not less than 1 Pa and not more than atmospheric pressure, at 25° C. to 200° C. to recover lactic acid. | 10-27-2011 |
20120070871 | POLYPEPTIDE HAVING D-LACTATE DEHYDROGENASE ACTIVITY, POLYNUCLEOTIDE ENCODING THE POLYPEPTIDE, AND PROCESS FOR PRODUCTION OF D-LACTIC ACID - 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. | 03-22-2012 |
20130059345 | MANUFACTURING METHOD FOR SUGAR SOLUTION AND DEVICE FOR SAME - A method of hydrolysis of cellulose uses a filamentous fungus-derived cellulase as a carbohydrase and includes adding the carbohydrase to cellulose to perform primary hydrolysis and then subjecting the primary hydrolysate to solid-liquid separation into a primary sugar liquid and solids; adding water to the solids and performing secondary hydrolysis, followed by subjecting the secondary hydrolysate to solid-liquid separation into a secondary sugar liquid and a residue; and filtering the primary sugar liquid and/or secondary sugar liquid through an ultrafiltration membrane, and recovering the carbohydrase from the feed side and recovering a sugar solution from the permeate side. | 03-07-2013 |
20130095539 | LACTIC ACID PRODUCTION METHOD - A method of producing lactic acid by separating lactic acid produced in a culture solution by microbial fermentation, comprising: a step (A) of filtering the culture solution through a nano-filtration membrane; and a step (B) of distilling a lactic-acid-containing solution produced in step (A) under a pressure of 1 Pa to atmospheric pressure (inclusive) at a temperature of 25 to 200° C. (inclusive) to recover lactic acid. | 04-18-2013 |
20130203117 | MANUFACTURING METHOD FOR SUGAR SOLUTION AND DEVICE FOR SAME - 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. | 08-08-2013 |
20130312738 | METHOD FOR PRODUCING SUGAR SOLUTION - 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. | 11-28-2013 |
20140012041 | METHOD FOR PRODUCING LACTATE - A method produces a lactic acid salt and includes subjecting an aqueous lactic acid salt solution comprising a formic acid salt in an amount of not less than 7.0% by weight with respect to the lactic acid salt to crystallization, and recovering the lactic acid salt. By subjecting the aqueous lactic acid salt solution including a formic acid salt in an amount of not less than 7.0% by weight with respect to the lactic acid salt to crystallization, supersaturation of the lactic acid salt can be stabilized, and the recovery of the lactic acid salt can be increased. | 01-09-2014 |
20140296471 | DIOL COMPOSITION AND POLYESTER - A diol composition includes a diol as a major component and has an electrical conductivity of 0.6 to 30 mS/m. | 10-02-2014 |