Kaneka Corporation

Masaru Hirano

Yoshikazu Kawai

Tatsuya Honda

Takahiro Okubo

Fuminori Konoike

Keiichi Karasugi

Koichi Kinoshita

Kento Kanaya

Yasuyuki Suzuki

Takafumi Igari

Kenichiro Morio

Shogo Hirota

Kaoru Nishiumi

Fumiya Sako

Kana Watanabe

In one or more embodiments, the present invention relates to a method for producing a polyhydroxybutyrate-based resin. The method includes (a) disrupting or solubilizing microbial cells containing a polyhydroxybutyrate-based resin, and (b) separating the polyhydroxybutyrate-based resin from a composition obtained by the process (a). The process (a) and the process (b) use water with a calcium ion concentration of 4.5 mg/L or less. The water used in the process (a) and the process (b) is preferably obtained by subjecting wastewater that is discharged from the production process of the polyhydroxybutyrate-based resin to microbial anaerobic and aerobic treatments, subsequently pre-filtration by a membrane bioreactor process, and further filtration with a calcium ion removal membrane. This method provides the polyhydroxybutyrate-based resin with good color tone and high thermal stability.

Method for production polyhydroxybutyric acid resin

The object of an aspect of the present invention is to provide a method for producing a long-chain fatty acid, the method making it possible to prevent a coloring component from being contained in the long-chain fatty acid and recover the long-chain fatty acid at a high yield. The above problem is solved by providing a method for producing a long-chain fatty acid, the method including the steps of: (a) with use of an enzyme, decomposing, into fatty acids, triglyceride contained in a raw vegetable oil which is derived from a vegetable-derived oil-containing waste; (b) removing, by distillation, a short-chain fatty acid contained in the raw vegetable oil which has been subjected to the step (a); and (c) recovering, by short-path distillation, a long-chain fatty acid contained in the raw vegetable oil which has been subjected to the step (b).

Production method for long-chain fatty acids and use thereof

A carrier for ligand immobilization obtained by shrinking polysaccharide porous beads not less than 10% by a shrinkage rate defined by the following formula, and crosslinking the polysaccharide porous beads: Shrinkage rate (%)=(1&#x2212;V/V)&#xd7;100 (wherein, Vindicates the gel volume of polysaccharide porous beads before shrinkage, and Vindicates the gel volume of polysaccharide porous beads after shrinkage).

Carrier for ligand immobilization

A process for producing porous cellulose beads of the present invention is characterized by comprising the steps of: A carrier for ligand immobilization of the present invention is characterized by being by shrinking polysaccharide porous beads not less than 10% by a shrinkage rate defined by the following formula, and crosslinking the polysaccharide porous beads:Shrinkage rate (%)=(1&#x2212;)&#xd7;100(wherein, Vindicates the gel volume of polysaccharide porous beads before shrinkage, and Vindicates the gel volume of polysaccharide porous beads after shrinkage).

Process for producing porous cellulose beads using alkali aqueous solution

The objective of the present invention is to provide a convenient method for producing porous cellulose beads having high mechanical strength without using an auxiliary material which is highly toxic and corrosive and without a cumbersome and industrially adverse step. The method for producing porous cellulose beads according to the present invention is characterized in comprising the steps of mixing a cold alkaline aqueous solution and cellulose to prepare a cellulose dispersion and bringing the cellulose dispersion into contact with a coagulating solvent.

Method for producing porous cellulose beads

The present invention provides an efficient method for industrially producing a naturally-derived carotenoid composition with a large amount of a carotenoid such as astaxanthin from a culture of a yeast of the genuswithout requiring any special extraction equipment and any complicated refinement process and without any need for organic solvents harmful to humans. Provided is a method for producing a carotenoid composition, including the steps of washing a carotenoid-containing yeast of the genuswith an organic solvent (A) at 30&#xb0; C. or lower, and extracting a carotenoid from the washed yeast with an organic solvent (B) at 10&#xb0; C. to 70&#xb0; C.

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Takasago, Japan

Masaru Hirano