Impact of growth medium salinity on galactoxylan exopolysaccharides of Porphyridium purpureum

Ferreira, Andreia S.; Mendonça, Inés de; Inês, Póvoa; Carvalho, Hélia; Correia, Alexandra; Vilanova, Manuel; Silva, Tiago H.; Coimbra, Manuel A.; Nunes, Cláudia

doi:10.1016/j.algal.2021.102439

Cited by 13 publications

(3 citation statements)

References 61 publications

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“…These results also reveal that SP from members of the Hydrocharitaeae was also positively correlated with a saline environment. For the red marine microalga, Porphyridium purpureum (Bory), Drew and Ross, Ferreira et al, [19] also found that higher amounts of SP were found at 32‰ than at 18‰. Bunson and Prathep [20] reported that salinity was the most relevant factor positively correlated to SP production in the red algae Gracilaria tenuistipitata Chang & Xia.…”

Section: Discussionmentioning

confidence: 98%

Effect of environmental parameters on the content and sugar composition of sulfated polysaccharides in some tropical seagrass

Nguyen,

Nguyen Nhat,

Nguyen

et al. 2023

VJMST

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Seagrasses are a paraphyletic group of marine angiosperms that evolved three to four times from land plants and returned to the sea. Halophila ovalis, Thalassia hemprichii and Enhalus acoroides (Hydrocharitaceae) are species that can occur in wide salinity ranges. Sulfated polysaccharides (SPs) comprise a complex group of macromolecules with many critical biological functions. We assume that SP may play a role in salt tolerance in seagrass. In this study, three seagrass species collected in both rainy and dry seasons from the fields were analyzed to determine the total SP contents and different functional groups of SP. Quantification of total SP was done by photometric assays. High-performance anion-exchange chromatography with Pulsed Electrochemical Detection (HPAEC) determined different functional groups of SPs. The results indicated higher total SP contents in seagrass are present in plants at higher salinities and environmental temperatures. The percent of functional groups of SPs are present in the following order: glucose > galactose > arabinose > mannose > rhamnose > fucose. The order is not different between the two seasons.

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Section: Discussionmentioning

confidence: 98%

Effect of environmental parameters on the content and sugar composition of sulfated polysaccharides in some tropical seagrass

Nguyen,

Nguyen Nhat,

Nguyen

et al. 2023

VJMST

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“…On the other hand, the levels of Rha and Xyl increased by a factor of 2 and 7. The study of [ 177 ] on P. purpureum has shown that EPS production increased by 32 g L −1 , as compared to 18 and 50 g L −1 . However, the EPS composition was not found significantly different, except for a change in the sulfation pattern, with sulfate groups at the O -6 position on glucose residues at low salinity, whereas high salinity induced sulfation on the O -4 position.…”

Section: Culture Strategies For Eps Production and Impact On Compositionmentioning

confidence: 99%

Exopolysaccharides from Microalgae and Cyanobacteria: Diversity of Strains, Production Strategies, and Applications

Laroche

2022

Marine Drugs

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Microalgae and cyanobacteria are photosynthetic organisms that can produce/accumulate biomolecules with industrial interest. Among these molecules, EPSs are macromolecular polysaccharidic compounds that present biological activities and physico-chemical properties, allowing to consider their valorization in diverse commercial markets, such as cosmetic, therapeutic, nutraceutic, or hydrocolloids areas. The number of microalgae and cyanobacteria strains described to produce such EPSs has increased in recent years as, among the 256 producing strains gathered in this review, 86 were published in the last 10 years (~33%). Moreover, with the rise of research on microalgae EPSs, a variety of monosaccharides compositions have been discovered, highlighting the versatility of these organisms. If some production strategies can be applied to increase EPS production yields, it appears that case by case studies are needed to promote EPS synthesis by a strain, as many responses exist. This paper proposes an up-to-date state of the art of the diversity of microalgae and cyanobacteria EPS-producing strains, associated to the variability of compositions. The strategies for the production and extraction of the polymers are also discussed. Finally, an overview of the biological activities and physico-chemical properties allow one to consider their use on several commercial markets.

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“…While these exopolysaccharides play a protective role during cell growth, their production rates and, in some cases, their composition change in response to variations in the environmental factors, such as the nutrient composition, light intensity, temperature, etc. Porphyridium-derived exopolysaccharides have been shown to have immunostimulatory effects, finding applications in cosmetics, growth promoters in agriculture and the health food market [13]. Phycoerythrin, the main photosynthetic pigment that is present in this species of microalgae, has found a commercial application as a fluorescent dye in pigments and health care products, exhibiting activity as an anti-oxidant and for immunity enhancement.…”

Section: Introductionmentioning

confidence: 99%

Microalgae Strain Porphyridium purpureum for Nutrient Reduction in Dairy Wastewaters

et al. 2022

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This paper has approached the study of dairy wastewater treatment and the simultaneous biocompound production by Porphyridium purpureum under continuous light and under a day–night cycle. The main goals were to achieve a reduction in the lactose content of the cheese wastewater that was tested and, at the same time, to obtain added value from the produced compounds, so as to increase the economic value of the process. The results show that biomass production increases proportionally with the concentration of lactose for both of the illumination options. The lactose concentration in the waste stream was reduced over 90% in just 7 days. The exopolysaccharide concentration in the growth medium increased with lactose availability. For the samples that were under constant light stress, the concentration of phycobiliproteins was highest when there was small amounts of lactose in the medium. The content of pigments was higher in the case of the day–night cycle of illumination; these being affected by stress factors such as continuous light and high lactose concentration. The results that were obtained prove that dairy wastewaters that are rich in lactose can be used efficiently for the growth of Porphyridium purpureum, achieving an increase in the biomass concentration and a large reduction of the lactose from this waste stream while obtaining a microalgae biomass that is rich in valuable compounds.

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Impact of growth medium salinity on galactoxylan exopolysaccharides of Porphyridium purpureum

Cited by 13 publications

References 61 publications

Effect of environmental parameters on the content and sugar composition of sulfated polysaccharides in some tropical seagrass

Effect of environmental parameters on the content and sugar composition of sulfated polysaccharides in some tropical seagrass

Exopolysaccharides from Microalgae and Cyanobacteria: Diversity of Strains, Production Strategies, and Applications

Microalgae Strain Porphyridium purpureum for Nutrient Reduction in Dairy Wastewaters

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