Zeaxanthin Production by an Antarctic sp.: Effect of Dissolved Oxygen Concentration and Modeling Kinetics in Batch and Fed-Batch Fermentation.

Zeaxanthin is a high-value carotenoid, found naturally in fruits and vegetables, flowers, and microorganisms. genus is widely known for the production of zeaxanthin in its free form. Nowadays, the production of zeaxanthin from bacteria is still noncompetitive with traditional methods.

Lactic acid production by sp. isolated from a maritime Antarctic lake using eucalyptus enzymatic hydrolysate.

sp., a lactic acid bacterium isolated from a maritime Antarctic lake, was evaluated for lactic acid production from a lignocellulosic hydrolysate. Eucalyptus sawdust, a residue from pulp and paper industries, was subjected to alkaline pretreatment to enhance its enzymatic hydrolysis.

Biotechnological production of zeaxanthin by an Antarctic Flavobacterium: Evaluation of culture conditions.

Statistical experimental designs were used to formulate a culture medium for zeaxanthin production by an Antarctic Flavobacterium sp. P8 strain. Eleven nutritional factors were assayed in shaken flasks.

Carotenoids from heterotrophic bacteria isolated from Fildes Peninsula, King George Island, Antarctica.

Carotenoids are isoprenoid pigments used by pharmaceutical, cosmetic, food and feed industry as antioxidants and colorants. Although traditional sources of carotenoids are fruits, vegetables and chemical synthesis, prospecting for alternative sinks of common and/or unusual carotenoids is important for the development of natural carotenoid industry. In this work, 30 pigmented bacterial strains from Fildes Peninsula in King George Island, Antarctica, were isolated and identified by 16S rRNA gene sequencing and classified in three phyla, Bacteroidetes, Firmicutes and Actinobacteria.