The influence of low and high oxygen concentration on the yield and spectrum of fatty acids in Porphyridium cruentum

Rogova, N.; Springer, Mónika; Tsoglin, L. N.; Franke, H.; Pulz, Otto

doi:10.1016/s0176-1617(96)80115-5

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…Coward et al (2016) reported that green light could improve the content phycobiliproteins [ 19 ]. Rogova et al (1996) showed that the content of EPA and ARA was enhanced by the high oxygen concentration [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Growth and Biochemical Composition of Porphyridium purpureum SCS-02 under Different Nitrogen Concentrations

et al. 2019

Marine Drugs

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Microalgae of the genus Porphyridium show great potential for large-scale commercial cultivation, as they accumulate large quantities of B-phycoerythrin (B-PE), long chain polyunsaturated fatty acids (LC-PUFAs) and exopolysaccharide (EPS). The present study aimed to adjust culture nitrogen concentrations to produce Porphyridium biomass rich in B-PE, LC-PUFAs and EPS. Porphyridium purpureum SCS-02 was cultured in ASW culture medium with low nitrogen supply (LN, 3.5 mM), medium nitrogen supply (MN, 5.9 mM) or high nitrogen supply (HN, 17.6 mM). HN significantly enhanced the accumulation of biomass, intracellular protein, B-PE and eicosapentaenoic acid. LN increased the intracellular carbohydrate and arachidonic acid content, and promoted the secretion of EPS. The total lipids content was almost unaffected by nitrogen concentration. Based on these results, a semi-continuous two-step process was proposed, which included the production of biomass rich in B-PE and LC-PUFAs with sufficient nitrogen, and induced EPS excretion with limited nitrogen and strong light.

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Section: Introductionmentioning

confidence: 99%

Growth and Biochemical Composition of Porphyridium purpureum SCS-02 under Different Nitrogen Concentrations

et al. 2019

Marine Drugs

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Effects of nitrogen and phosphorous stress on the formation of high value LC-PUFAs in Porphyridium cruentum

Wang

et al. 2018

Appl Microbiol Biotechnol

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This study systematically examined the effect of nitrogen and phosphorous stress on the formation of linoleic acid (LA), arachidonic acid (ARA), and eicosapentaenoic acid (EPA) in Porphyridium cruentum gy-h56. P. cruentum was cultivated in six different media conferring different conditions of nitrogen (N) sufficiency/deprivation and phosphorous (P) sufficiency/limitation/deprivation. Over a 16-day cultivation process, the dry-weight content, proportion of total fatty acids (TFAs), and the concentration in the medium of linoleic acid (LA) were greatly improved by a maximum of 2.5-, 1.6-, and 1.1-fold, respectively, under conditions of N or P deprivation compared with N and P sufficiency. In contrast, levels of EPA or ARA were not enhanced under N or P stress conditions. Additionally, the results showed that N deprivation weakened the impact of P deficiency on the content and proportions of LA and EPA, while P deprivation enhanced the impact of N starvation on the content and proportions of LA and EPA. The conditions of N sufficiency and P deprivation (N+P-) were the optimal conditions for the production of LA, while the optimal conditions for EPA, ARA, and TFAs production were N sufficiency and P limitation (N+P-lim). This study suggests the potential application of combining N removal from saline wastewater with the production of LA, ARA, EPA, and biodiesel.

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Advances in the production of bioactive substances from marine unicellular microalgae Porphyridium spp.

Shi

et al. 2019

Bioresource Technology

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The influence of low and high oxygen concentration on the yield and spectrum of fatty acids in Porphyridium cruentum

Cited by 3 publications

References 6 publications

Growth and Biochemical Composition of Porphyridium purpureum SCS-02 under Different Nitrogen Concentrations

Growth and Biochemical Composition of Porphyridium purpureum SCS-02 under Different Nitrogen Concentrations

Effects of nitrogen and phosphorous stress on the formation of high value LC-PUFAs in Porphyridium cruentum

Advances in the production of bioactive substances from marine unicellular microalgae Porphyridium spp.

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