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Docosahexaenoic acid (C22:6n − 3, DHA) and astaxanthin production by Thraustochytriidae sp. AS4-A1 a native strain with high similitude to Ulkenia sp.: Evaluation of liquid residues from food industry as nutrient sources

Paper ID Volume ID Publish Year Pages File Format Full-Text
17607 42683 2010 7 PDF Available
Title
Docosahexaenoic acid (C22:6n − 3, DHA) and astaxanthin production by Thraustochytriidae sp. AS4-A1 a native strain with high similitude to Ulkenia sp.: Evaluation of liquid residues from food industry as nutrient sources
Abstract

Thraustochytriidae sp. AS4-A1, a native strain with high similitude to Ulkenia sp., able to produce docosahexaenoic acid (C22:6n − 3, DHA) and astaxanthin (3,3′-dihydroxy-β,β-carotene-4,4′-dione, ASX) was cultivated in growth media based on liquid residues from potato chip processing, and residual mash recovered from a brewery by-product (RB). DHA productivity of these fermentations was compared to productivities of glucose, maltose and starch fermentations. The percentage of DHA in the total fatty acids was between 10.1% and 23.4% depending on growth media composition. RB, as the only source of nutrients, supported growth (8.1 ± 0.4 g/L dry weight biomass) and DHA production (576 ± 40 mg/L); however, its supplementing with yeast extract, monosodium glutamate and B-vitamins (thiamine, biotin and cobalamin) allowed significant increases in DHA productivity (540 mg/L/day), and concentrations of biomass (14.9 ± 0.4 g/L) and DHA (2698 ± 132 mg/L). In all the cases DHA production occurred during the growth period. ASX in the biomass was detected in the late growth rate phase; the highest ASX productivity (63 ± 3 mg/L/day) was obtained in the fermentation of RB as the only source of nutrients.

Keywords
Thraustochytrids; Polyunsaturated fatty acid; Docosahexaenoic acid; Carotenoids; Starch; B-vitamins
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Docosahexaenoic acid (C22:6n − 3, DHA) and astaxanthin production by Thraustochytriidae sp. AS4-A1 a native strain with high similitude to Ulkenia sp.: Evaluation of liquid residues from food industry as nutrient sources
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 47, Issues 1–2, 5 July 2010, Pages 24–30
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us