Nikko Bio Technica Co., Ltd.

Shoji Sakurai

Tadayuki Imanaka

A novel biosurfactant having a high surface activity, as well as a microorganism producing the surfactant is disclosed. The biosurfactant according to the present invention is represented by the formula [I]. ##STR1## The present invention also provides Arthrobacter sp. No. 38 (FERM BP-4435) which produces the biosurfactant of the formula [I].

Biosurfactant cyclopeptide compound produced by culturing a specific

Disclosed is a method of super precision devices such as semiconductor devices. In the method of the present invention, the devices are washed with an aqueous solution containing a purified proteolytic enzyme, poly(oligo)saccharide-decomposing enzyme, or a lipid or oil-decomposing enzyme.

Method of washing super precision devices, semiconductors, with enzymes

A novel strain belonging to Bacillus stearothermophilus. The strain of the present invention has a protoplast-forming ratio of not less than 99% and has a ration of regeneration of cell wall of not less than 50%, and is transformable with a plasmid.

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Shizuoka, Japan

Shoji Sakurai