Abstract: A method for producing vitamin K2 comprising: culturing Bacillus natto in a liquid medium to obtain a Bacillus natto culture or culture supernatant thereof, wherein the culture or culture supernatant contains vitamin K2; treating the culture or culture supernatant with at least one coagulant selected from the group consisting of an inorganic coagulant and a cationic polymer coagulant, with the proviso that the coagulant excludes chitosan, so as to obtain a treated coagulant to which vitamin K2 is absorbed or aggregated; separating the treated coagulant from the treated culture or culture supernatant, and obtaining an oily product that contains vitamin K2 from the separated coagulant.
Type:
Grant
Filed:
June 28, 2007
Date of Patent:
February 14, 2012
Assignees:
Japan Bio Science Laboratory Co., Ltd., Daiwa Kasei K. K.
Abstract: A method for producing vitamin K2 comprising: culturing Bacillus natto in a liquid medium to obtain a Bacillus natto culture or culture supernatant thereof, wherein the culture or culture supernatant contains vitamin K2; treating the culture or culture supernatant with at least one coagulant selected from the group consisting of an inorganic coagulant and a cationic polymer coagulant, with the proviso that the coagulant excludes chitosan, so as to obtain a treated coagulant to which vitamin K2 is absorbed or aggregated; separating the treated coagulant from the treated culture or culture supernatant, and obtaining an oily product that contains vitamin K2 from the separated coagulant.
Type:
Application
Filed:
June 28, 2007
Publication date:
November 1, 2007
Applicants:
Japan Bio Science Laboratory Co, Ltd., DAIWA KASEI K.K.
Abstract: The present invention provides a method for producing a food product containing nattokinase but containing little or none vitamin K2, comprising treating a Bacillus natto culture or culture supernatant with at least one coagulant selected from the group consisting of an inorganic coagulant and a cationic polymer coagulant (excluding chitosan). As the inorganic coagulant, calcium chloride or poly aluminum chloride is preferable, and their mixtures with a phosphorus coagulant are also preferably used. As the cationic polymer coagulant, cationic polysaccharides, hexamethylenediamine/epichlorohydrin polycondensates or dimethylamine/epichlorohydrin polycondensates are preferably used, and their mixtures with a polyacrylate are also preferably used.
Type:
Application
Filed:
December 8, 2005
Publication date:
June 29, 2006
Applicants:
Japan Bio Science Laboratory Co., Ltd., Daiwa Kasei K.K.
Abstract: The invention provides an enzymatic unhairing agent for use in an unhairing step in tanning for producing leather comprising an alkaline protease as an active component; a treatment solution comprising a pH-adjusting agent and the enzymatic unhairing agent; a method for enzymatic unhairing treatment in tanning for producing leather comprising contacting the treatment solution with a raw hide or skin; and a leather thus produced. According to the invention, it is attained markedly reduction of the pollution load in the unhairing waste water and leather and recovered hairs both of good quality can be obtained.