Nippon Paint Compnay, Ltd.

Yoshikazu Yamamoto

Ryuzo Mizuguchi

Yasutaka Miura

Yasuhiro Kinoshita

Masako Higuchi

Yasuyuki Yamada

Takashi Yoshii

Toshiko Shibata

Koichi Koshimizu

Kunio Takahashi

Yoshiyuki Kamio

Junichi Matsumoto

Keisuke Tashiro

Kaoru Takatori

Hajime Ohigashi

Kiyotaka Koyama

Yasuhiro Knoshita

Kazuo Izaki

A gene encoding a hydrogen peroxide-generating NADH oxidase and a method for preparing a large amount of the NADH oxidase with the use of the gene and gene recombinant techniques are disclosed.

DNA fragment encoding a hydrogen peroxide-generating NADH oxidase

Disclosed is a superoxide eliminating agent comprising a component extracted from natural lichens or lichen cultures, and a process for producing the same. Cosmetics containing the superoxide eliminating agent are also disclosed.

Superoxide eliminating agent

Stable and safe cosmetic compositions comprising melanin production inhibitors wherein the melanin production inhibitors have been extracted lichens cell cultures.

Cosmetics

Disclosed is a chemically stable tyrosinase activity inhibitor having high tyrosinase activity inhibition effect and low toxicity. The tyrosinase activity inhibitor has a structure of the formula: ##STR1## wherein R.sub.1, R.sub.3 and R.sub.4 are a hydrogen atom or an alkyl or alkenyl group having 1 to 9 carbon atoms, and R.sub.2 is an alkyl or alkenyl group having 2 to 9 carbon atoms.

Tyrosinase activity inhibitor

The present invention provides a dye other than red and purple which is obtained from cultured cells of Euphorbia milli. The present invention also provides cultured cells containing quercetin glucuronide in a large amount, derived from tissues or cells of Euphorbia milli.

Production of quercetin glucuronide

Disclosed is cultured plant cell derived from tissues or cells of a plant belonging to Hydrocotyle genus (water-pennyworts) and Centella genus, a culture method therefor, and a blood coagulation component and an therapeutic agent for mental disease obtained the cultured plant cells.

Plant culture cell and use thereof

An undifferentiated symbiotic combination of lichen flora induced from a tissue of lichen flora and having a capability of producing any lichenous substance.

Tissue culture of lichens

An undifferentiated symbiotic combination of alga and fungus cells, obtained directly from a lichen explant, are cultured in a media under appropriate conditions to produce aromatic lichenous substances and these substances are recovered.

Growing community of inventors

Neyagawa, Japan

Yoshikazu Yamamoto