Kaneka Corporation

National Institute of Advanced Industrial Science and Technology

Sabo S.p.a.

Satohiro Yanagisawa

Masashi Izumida

Hirokazu Nanba

Makoto Ueda

Koji Noda

Dai Kitamoto

Takuto Nagano

Tomohiro Imura

Toshiaki Taira

Kenji Inoue

Yasuyoshi Ueda

Yoshihiko Yasohara

Shigeru Kawano

Nobuo Nagashima

Tatsuya Honda

Takahiro Ohishi

Masanobu Sugawara

Kohei Mori

Kenichi Nishi

Ryohei Ishimaru

Tohru Nakashima

Naoto Noro

Callot Ori

Costantini Enrico

The objective of the present invention is to provide a cleaning agent composition which can be used in the open air without any problems since the cleaning agent is environmentally friendly and which is effective for removing a low-molecular-weight and poorly-water-soluble cyclic silicone compound that causes a stain of a silicone sealing. The cleaning agent for washing out a silicone stain according to the present invention is characterized in comprising a cyclic lipopeptide biosurfactant, wherein the specific silicone stain compound such as D4 compound is the objective compound to be removed.

Cleaning agent for washing out silicone stain

The objective of the present invention is to provide a method for remarkably reducing a critical micelle concentration of an anionic surfactant, which is used in a large amount currently, to reduce the amount to be used. Also, the objective of the present invention is to provide a surfactant composition of which whole critical micelle concentration is remarkably reduced and in which an amount of an anionic surfactant is reduced in comparison with the case of using an anionic surfactant only as a surfactant. The method for reducing a critical micelle concentration of an anionic surfactant according to the present invention is characterized in using a cyclic lipopeptide biosurfactant in combination with the anionic surfactant.

Method for reducing critical micelle concentration, and surfactant composition

The objective of the present invention is to provide an extinguishing agent which has excellent fire-extinguishing property and which exhibits high safety to the environment and human body. The fire extinguishing agent of the present invention is characterized in comprising a biosurfactant.

Fire extinguishing agent and fire extinguishing method using same

The objective of the present invention is to provide a method for producing a polymer of a monomer having a vinyl group while reducing a residual amount of a surfactant within the polymer as the target compound and waste water. The method for producing a polymer according to the present invention is characterized in comprising the step of polymerizing a monomer having a vinyl group in an aqueous medium in the presence of a surfactin salt, which is a natural peptide surfactant, and a polymerization initiator, wherein a ratio of the surfactin salt (I) to 100 parts by mass of the monomer is not less than 0.0005 parts by mass and less than 0.1 parts by mass.

Polymer production method

The present invention provides a simple industrial process for producing an L- or D-optically active &#x3b1;-methylcysteine derivative or its salt, which is a useful pharmaceutical intermediate, from readily available, inexpensive raw materials. In a process for producing an L- or D-optically active &#x3b1;-methylcysteine derivative or its salt, a racemic N-carbamoyl-&#x3b1;-methylcysteine derivative or its salt is D-selectively cyclized with hydantoinase to produce a D-5-methyl-5-thiomethylhydantoin derivative or its salt and an N-carbamoyl-&#x3b1;-methyl-L-cysteine derivative or its salt, which are then subjected to deprotection of the amino group and the sulfur atom, and hydrolysis.

Process for producing optically active &#x3b1;-methylcysteine derivative

The present invention provides a low-cost, efficient method for producing a glycolipid biosurfactant, in particular, lactonic sophorose lipids. This method is characterized by culturing a microorganism capable of producing the biosurfactant under limited oxygen supply. The present invention enables preferential production of lactonic sophorose lipids and facilitates recovery of the lactonic sophorose lipids in a solid form. Further, the present invention enables production of high purity acidic sophorose lipids by hydrolyzing high purity lactonic sophorose lipids produced by the above method. The present invention also provides lactonic sophorose lipids that possess strong antibacterial and antifungal activities, and an antibacterial and/or antifungal agent containing the sophorose lipids.

Method for producing sophorose lipid

Disclosed are a novel hydantoin racemase and a process for producing an optically active N-carbamylamino acid or an optically active amino acid using the hydantoin racemase. A novel hydantoin racemase isolated and purified fromsp. Strain KNK519HR; a gene encoding the hydantoin racemase; a recombinant plasmid having the gene introduced therein; a transformant having the hydantoin racemase gene introduced therein; and a process for producing an optically active N-carbamylamino acid or an optically active amino acid characterized in that a 5-substituted hydantoin compound is treated in the presence of hydantoinase and N-carbamylamino acid amidohydrolase as well as the hydantoin racemase.

5-Substituted hydantoin racemase, DNA encoding the same, recombinant DNA, transformed cell, and process for production of optically active N-carbamylamino acid or optically active amino acid

It is an object of the present invention to provide a novel amidase that is useful for production of an optically active amino acid, and in particular, a D-amino acid, and a production method thereof. The present invention relates to a novel D-amidase isolated and purified from thesp. KNK1101J, a gene encoding the above amidase, a recombinant plasmid comprising the above gene, and a transformant into which the above amidase gene has been introduced. In addition, the present invention also relates to a method for producing the amidase, comprising culturing thesp. KNK1101J or the above transformant, and collecting the above amidase.

Polypeptide having amidase activity and gene thereof

Growing community of inventors

Tokyo, Japan

Satohiro Yanagisawa