Nippon Oil Company

Jx Nippon Oil Energy Corporation

Nippon Mitsubishi Oil Corporation

Nippon Oil Corporation

Jxtg Nippon Oil & Energy Corporation

Akira Tsubokura

Hisashi Yoneda

Takashi Kiyota

Kazuaki Hirasawa

Mikihiro Takaki

Haruyoshi Mizuta

Satoru Ishikawa

Tetsuhisa Yata

Hiroshi Satou

Tomoyuki Ishizaki

Mikihiro Takai

Motomitsu Kitaoka

Hirasawa Kazuaki

The present invention provides a salmon flesh color improving method and a salmon flesh color improving feed which are usable for producing a salmon having a mild reddish orange flesh color close to the flesh color of wild fish, and a salmon and fish flesh thereof produced by such a flesh color improving method. The present invention also provides a method for producing a salmon having a mild reddish orange flesh color, comprising cultivating the salmon with a feed comprising a carotenoid colorant mixed therein, the carotenoid colorant comprising at least astaxanthin, phoenicoxanthin, canthaxanthin and adonixanthin.

Method of improving salmon meat color

The present invention provides a method for producing a carotenoid, which comprises culturing a carotenoid-producing bacterium in an amino acid-supplemented medium, and collecting the carotenoid from the resulting cultured product, wherein the amino acid is at least one selected, from the group consisting of glutamic acid, aspartic acid, glutamine, asparagine, alanine, glycine, serine, threonine, arginine, tyrosine, proline, phenylalanine and leucine, and salts thereof.

Carotenoid fermentation method

The present invention provides a method for collecting a carotenoid from a culture of a carotenoid-producing bacterium at high yield. Specifically, the present invention provides a method for separating a carotenoid comprising a step of precipitating a concentrate containing the carotenoid from a culture of a carotenoid-producing bacterium under acidic conditions; and a method for producing a carotenoid comprising the steps of precipitating a concentrate containing the carotenoid from a culture of a carotenoid-producing bacterium under acidic conditions and collecting the carotenoid from the obtained precipitate.

Method for separating carotenoid

A method for producing a composition containing carotenoid at a content of 80% or greater, characterized in performing extraction on a culture of a microorganism, a concentrate of the culture, or a dried substance thereof with at least one selected from the group consisting of lower alcohols, water-containing lower alcohols, lower dialkylketones and ethers; and then washing a precipitate, obtained by concentrating the extract solution, with at least one selected from the group consisting of lower alcohols, water-containing lower alcohols, hydrocarbon-based solvents and lower dialkylketones; and food, a pharmaceutical composition or a cosmetic substance comprising the carotenoid-containing composition.

Process for production of carotenoid

The present invention relates to a process for producing zeaxanthin, &#x3b2;-carotene, or lycopene, comprising inducing mutation in a carotenoid-producing microorganism in which the base sequence of DNA corresponding to 16S ribosomal RNA is substantially homologous to the base sequence described in SEQ ID NO: 1; screening for a mutant strain having a high product proportion of zeaxanthin, &#x3b2;-carotene, or lycopene to the whole production amount of carotenoids to provide a microorganism producing zeaxanthin, &#x3b2;-carotene, or lycopene; culturing the mutant microorganism; and harvesting zeaxanthin, &#x3b2;-carotene, lycopene or a carotenoid mixture containing the same from the resultant culture.

Process for producing carotenoid compound

The present invention provides a method for changing production ratios of carotenoid compounds in a process of microbiological production of a plurality of carotenoid compounds. By controlling the concentration of dissolved oxygen in the culture during cultivation, production ratios of carotenoid compounds such as astaxanthin, adonixanthin, &bgr;-carotene, echinenone, canthaxanthin, zeaxanthin, &bgr;-cryptoxanthin, 3-hydroxyechinenone, asteroidenone and adonirubin, are changed.

Process for producing carotenoid pigments

This invention provides a pigment-containing substance for feed additives consisting of a microorganism culture precipitate which contains a high concentration of carotenoid compounds. This pigment-containing substance for feed additives is resistant to oxygen, light and so on, and can be stably conserved for a long time period.

Pigment- containing materials to be added to feeds

Bacterium belonging to a new genus, and a process for production of carotenoid pigment selected from the group consisting of astaxanthin, adonixanthin, .beta.-carotene, echinenone, canthaxanthin and zeaxanthin, comprising the steps of culturing a bacterium capable of producing at least one of the carotenoid pigments, and recovering an individual carotenoid pigments. The producer bacterium belongs to new genus. According to the present process various carotenoids can be produced in an industrial scale. By the present process (3S, 3'S)-astaxanthin can be produced in an almost 100% purity.

Bacteria for production of carotenoids

Bacteria belonging to new genus process for production of carotenoids

A process for extraction of a carotenoid compound from bacterial cells containing the carotenoid compound comprising the step of bringing the bacterial cells into contact with supercritical fluid so as to extract the carotenoid compound from the cells. The process provides carotenoid compounds which can be safely used as feed additives and food additives.

Process for extraction of carotenoids from bacterial cells

A process for production of canthaxanthin comprising the steps of culturing a microorganism capable of producing canthaxanthin and belonging to the genus Corynebacterium, such as Corynebacterium sp. SQH 348 (FERM BP-4284), and recovering canthaxanthin from the culture.

Process for production of canthaxanthin

A process for the production of an optically active 3-methyladipic acid represented by the formula (I): ##STR1## wherein the symbol * represents an asymmetric carbon atom, comprising the steps of culturing a microorganism belonging to the genus Candida and capable of producing the optically active 3-methyladipic acid in a medium containing squalene, to produce an optically active 3-methyladipic acid; and recovering the optically active 3-methyladipic acid from the cultured product.

Process for production of optically active 3-methyladipic acid from

A process for the production of methylsuccinic acid represented by the formula (I): ##STR1## wherein the symbol * represents an asymmetric carbon atom, comprising the steps of culturing Candida in a medium containing squalene and producing methylsuccinic acid.

Growing community of inventors

Yokohama, Japan

Akira Tsubokura