A brief period of darkness induces changes in fatty acid biosynthesis towards accumulation of saturated fatty acids in Chlorella vulgaris UMT-M1 at stationary growth phase.
Biotechnol Lett
; 43(4): 803-812, 2021 Apr.
Article
em En
| MEDLINE
| ID: mdl-33438120
ABSTRACT
OBJECTIVE:
The effects of a brief (3 days) and prolonged (6 days) period of incubation in darkness and light on the biomass content, lipid content and fatty acid profile in Chlorella vulgaris UMT-M1 were determined.RESULTS:
Three days of incubation in darkness increased saturated fatty acid (SFA) content from 34.0 to 41.4% but decreased monounsaturated fatty acid (MUFA) content from 36.7 to 29.8%. Palmitic acid (C160) content was increased from 23.2 to 28.9%, whereas oleic acid (C181) content was reduced from 35.4 to 28.8%. Total oil content was slightly decreased from 20.4 to 18.7% after 3 days of darkness, without a significant reduction in biomass compared to 3 days of incubation in light. Biomass and oil content was highest in cultures incubated for 6 days in light, however the stimulatory and inhibitory effects of darkness (or light) on SFA and MUFA content was no longer present at 6 days of incubation.CONCLUSIONS:
Findings from this study suggests that fatty acid composition in C. vulgaris could be modulated to favor either C160 or C181 by a brief period of either darkness or light incubation, prior to harvesting.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ácidos Graxos Monoinsaturados
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Chlorella vulgaris
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Ácidos Graxos
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article