Jx Nippon Oil Energy Corporation

Eneos Corporation

Jxtg Nippon Oil & Energy Corporation

Hidetada Nagai

Toshiyuki Takahashi

Wataru Sato

Harumi Sato

Yuki Kawashima

Michihisa Ikarashi

A mutant carotenoidogenic bacterium, comprising any of genes (a)-(c) below: (a) a gene encoding a protein comprising a mutant amino acid sequence in which at least the 225th amino acid residue in the amino acid sequence of 1-deoxy-D-xylulose 5-phosphate synthase of a carotenoidogenic bacterium has been substituted with other amino acid residue; (b) a gene encoding a protein comprising a mutant amino acid sequence in which at least the 305th amino acid residue in the amino acid sequence of decaprenyl diphosphate synthase of a carotenoidogenic bacterium has been substituted with other amino acid residue; and (c) both of the genes (a) and (b) above.

Carotenoid production method

An object of the present invention is to provide zeaxanthin-enriched poultry eggs containing zeaxanthin at high concentrations. The present invention specifically relates to zeaxanthin-enriched poultry eggs obtained by feeding poultry with a poultry feedstuff containing zeaxanthin-producing bacteria.

Method for producing a zeaxanthin-enriched chicken egg

Growing community of inventors

Tokyo, Japan

Hidetada Nagai