Novel carotenoid-producing bacterial species and process for...

C - Chemistry – Metallurgy – 12 – P

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C12P 23/00 (2006.01) C12N 1/20 (2006.01)

Patent

CA 2299050

A novel Paracoccus species type strain DSM 11574 which produces and secretes carotenoids such as .beta.-carotene, echinenone, .beta.-cryptoxanthin, canthaxanthin, adonirubin, cis-adonixanthin, adonixanthin, astaxanthin and zeaxanthin in vesicles; carotenoid containing vesicles; and a process for production of carotenoids including the steps of (a) culturing a bacterial species in a nutrient medium including sources of carbon, nitrogen and inorganic substances; and (b) recovering an individual carotenoid pigment or a mixture of carotenoid pigments from cells, vesicles secreted therefrom and/or medium.

L'invention concerne une nouvelle souche DSM 11574 appartenant à l'espèce Paracoccus qui va produire et sécréter des caroténoïdes comme le bêta-carotène, l'échinénone, la bêta-cryptoxanthine, la cantaxanthine, l'adonirubine, la cis-adonixanthine, l'adonixanthine, l'astaxanthine, et la zéaxanthine dans des vésicules. L'invention concerne également des vésicules renfermant des caroténoïdes, et un procédé de production de caroténoïdes, ce procédé consistant: a) à mettre en culture une espèce bactérienne dans un milieu nutritionnel renfermant des sources de carbone et d'azote ainsi que des substances inorganiques; et b) à extraire un pigment de caroténoïde individuel ou un mélange de pigments de caroténoïdes à partir de cellules, des vésicules sécrétées par ces cellules, et/ou d'un milieu.

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