DK137577C

A process for the preparation of zeaxanthin which comprises culturing a microorganism of the genus Flavobacter producing this pigment, in a nutrient medium containing at least one carbohydrate as assimilable carbon source, at least one source of assimilable amino nitrogen containing free amino acids...

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Bibliographic Details
Main Authors SHEPHERD D, DASEK J
Format Patent
LanguageEnglish
Published 11.09.1978
Subjects
BEER
BIOCHEMISTRY
CHEMISTRY
ENZYMOLOGY
FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE
FODDER
FOODS OR FOODSTUFFS
HUMAN NECESSITIES
METALLURGY
MICROBIOLOGY
MUTATION OR GENETIC ENGINEERING
PROCESSES USING MICROORGANISMS
SPIRITS
THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
VINEGAR
WINE
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Summary:A process for the preparation of zeaxanthin which comprises culturing a microorganism of the genus Flavobacter producing this pigment, in a nutrient medium containing at least one carbohydrate as assimilable carbon source, at least one source of assimilable amino nitrogen containing free amino acids, mineral salts, oligoelements and vitamins, the spectrum of amino acids of the medium being modified by increasing the content in the medium of at least one of the sulphur-containing amino acids methionine, cystine and cysteine, in relation to the content in the medium of other amino acids, whilst limiting the quantity of the sulphur-containing amino acid added to the medium to a value not exceeding 1 mg/ml, and continuing culturing until a substantial quantity of intracellular zeaxanthin has been obtained.
Bibliography:Application Number: DK19740003887