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Economical lipid production from Trichosporon oleaginosus via dissolved oxygen adjustment and crude glycerol addition.

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Zhang, Xiaolei; Chen, Jiaxin; Wu, Di; Li, Ji; Tyagi, Rajeshwar Dayal; Surampalli, Rao Y. (2019). Economical lipid production from Trichosporon oleaginosus via dissolved oxygen adjustment and crude glycerol addition. Bioresource Technology , vol. 273 . p. 288-296. DOI: 10.1016/j.biortech.2018.11.033.

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Résumé

The effect of dissolved oxygen concentration on lipid accumulation in Trichosporon oleaginosus has been investigated. The experiment was performed in 15 L fermenters. The dissolved oxygen concentration varied by adjusting the agitation and aeration. High dissolved oxygen level at 50%–60% enhanced cell growth. Maintaining low dissolved oxygen concentration at 20%–30% during lipogenesis phase led to high final lipid content (51%) in Trichosporon oleaginosus. The consumptions of energy and cost of the process were evaluated. The energy consumption in the dissolved oxygen level optimized process was 41% less than that with dissolved oxygen level at 50%–60%. In addition, the cost was also reduced around one time in the dissolved oxygen level optimized process compared to the one with dissolved oxygen level at 50%–60%. The study provided a feasible way of enhancing lipid accumulation in Trichosporon oleaginosus and reducing the consumption of energy and cost of lipid production from Trichosporon oleaginosus.

Type de document: Article
Mots-clés libres: lipid accumulation; lipid content; dissolved oxygen concentration; energy balance; cost
Centre: Centre Eau Terre Environnement
Date de dépôt: 04 mars 2019 16:38
Dernière modification: 04 mars 2019 16:38
URI: http://espace.inrs.ca/id/eprint/7855

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