Aurantiochytrium sp ATCC PRA-276 strain is known to produce lipid and docosahexaenoic acid (DHA) in bio-synthetic process. In this study, five different chemicals; 2-phenylacetic acid (PAA), humic acid, spermidine, 1 methylcyclopropene, and ferric were evaluated for their influences on Aurantiochytrium sp to increase it’s production of lipid and DHA. After 120 h of cultivation, the individual supplementation of PAA, HA, and FC, increased the biomass, total lipid and DHA production of Aurantiochytrium PRA-276 by 32%–76%, 23%-34%, and 53%–86% in comparison to the control, respectively. The highest biomass and DHA productivities were observed with the supplementation of PAA and FC achieving 76% and 67% and 86% and 66%, compared to the control, respectively. This study suggests that the introduction of aforementioned bio-stimulants can increase the productivity of Aurantiochytrium sp to obtain better yields of lipid and DHA which will lead to economic-feasibility for large scale production.

Increase in lipid and DHA production by Aurantiochytrium Sp. under the influence of chemical inducers

ACS Spring 2022

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