National Institute of Advanced Industrial Science and Technology

Kaneka Corporation

Toyobo Co., Ltd.

Toyo Boseki Kabushiki Kaisha

Dai Kitamoto

Atsushi Sogabe

Shuhei Yamamoto

Tomotake Morita

Tomohiro Imura

Satohiro Yanagisawa

Masashi Izumida

Azusa Saika

Takuto Nagano

Tokuma Fukuoka

Tomohiro Sugahara

Toshiaki Taira

Koji Noda

Masaru Kitagawa

Michiko Suzuki

Hideaki Koike

Tohru Nakashima

Provided is a method for efficiently producing a monoacyl MEL. The method comprises culturing a monoacyl-MEL-producing microorganism in the presence of a surfactant.

Production of monoacyl MEL

Provided is a means for increasing mannosylerythritol lipid (MEL) production efficiency. The present invention is a mannosylerythritol-lipid-producing microorganism transformed with an expression vector having a gene that encodes a lipase under the control of E5Pgap promoter or E5Ptef promoter.

Biosurfactant-producing recombinant microorganism

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 present invention includes as an active ingredient at least one biosurfactant, in particular mannosyl alditol lipid (such as MEL and MML) or triacylated mannosyl alditol lipid. This allows providing an activator and anti-aging agent that is excellent in activating and anti-aging effects on cells and that is safe enough to be used for a long time, and also providing cosmetics, quasi-drugs, drugs, and drinks and foods including the activator and the anti-aging agent as active ingredients. Further, the present invention provides MEL whose mannosyl erythritol skeleton in a molecular structure is 1-O-&#x3b2;-D-mannopyranosyl-meso-erythritol and a method for producing the MEL with use of a microorganism.

Activator including biosurfactant as active ingredient, mannosyl erythritol lipid, and production method thereof

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Tsukuba, Japan

Dai Kitamoto