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Australian thraustochytrids: potential production of dietary long-chain omega-3 oils using crude glycerol
Citation
Chang, KJL and Paul, H and Nichols, PD and Koutoulis, A and Blackburn, SI, Australian thraustochytrids: potential production of dietary long-chain omega-3 oils using crude glycerol, Journal of Functional Foods, 19, (Part B) pp. 810-820. ISSN 1756-4646 (2015) [Refereed Article]
Copyright Statement
Copyright 2015 Elsevier Ltd.
DOI: doi:10.1016/j.jff.2015.01.039
Abstract
Thraustochytrids can produce high amounts of docosahexaenoic acid (DHA, 22:6ω3). Glycerol, a by-product of biodiesel production from vegetable oil and animal fats, is becoming increasingly available. We investigated the potential of Australian thraustochytrids to use crude glycerol as the main carbon source for production of long-chain (LC, ≥C20) omega 3-oils. Crude glycerol content was analysed, and the growth kinetics of eight thraustochytrid strains was examined with crude glycerol. Aurantiochytrium sp. strains achieved higher biomass (20 g/L dry cell weight; DCW) and lipid yield (389 mg/g total fatty acids; TFA) compared to Schizochytrium, Thraustochytrium and Ulkenia spp. Impurities in the crude glycerol hindered growth of thraustochytrids, with maximum yield of 9 g/L DCW and 48% DHA TFA at 4-days. Our research shows the potential of heterotrophic thraustochytrids to provide the growing global population with a secure, environmentally sustainable alternative source of health-benefitting LC omega-3 oils for use in feeds and foods.
Item Details
Item Type: | Refereed Article |
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Keywords: | Thraustochytrids, docosahexanoic acid, glycerol, polyunsaturated fatty acids |
Research Division: | Biological Sciences |
Research Group: | Plant biology |
Research Field: | Phycology (incl. marine grasses) |
Objective Division: | Plant Production and Plant Primary Products |
Objective Group: | Industrial crops |
Objective Field: | Industrial crops not elsewhere classified |
UTAS Author: | Paul, H (Miss Helen Paul) |
UTAS Author: | Koutoulis, A (Professor Anthony Koutoulis) |
ID Code: | 106446 |
Year Published: | 2015 |
Web of Science® Times Cited: | 15 |
Deposited By: | Plant Science |
Deposited On: | 2016-02-10 |
Last Modified: | 2017-11-06 |
Downloads: | 0 |
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