The Marine Macroalgae of the Genus Ulva: Chemistry, Biological Activities and Potential Applications

Silva, Madalena Pereira da; Vieira, Luís; Almeida, Ana Paula de; Kijjoa, Anake

doi:10.4172/2332-2632.1000101

Cited by 15 publications

(9 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several authors have reported antibacterial activity against E. coli strains in extracts of Ulva spp. (Chiheb et al, 2009; Silva et al, 2013). This characteristic could be associated to the lower abundance of this genus in the microbiota of S. senegalensis specimens receiving the Ulva diet compared to those fed with the control diet.…”

Section: Discussionmentioning

confidence: 99%

“…are responsible for fish disease (Småge et al, 2016a,b) and species such as T. discolor and T. soleae have been isolated from diseased Senegalese sole (Piñeiro-Vidal et al, 2008a,b; Morais et al, 2016). Presence of inhibitory compounds against some bacterial species has been reported in Ulva extracts (Silva et al, 2013; Reverter et al, 2014). However, this alga does not show high antibacterial activities in their extracts compared to other seaweed species, and inhibition on Tenacibaculum spp.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Modulation of Intestinal Microbiota in Solea senegalensis Fed Low Dietary Level of Ulva ohnoi

et al. 2019

View full text Add to dashboard Cite

Gastrointestinal (GI) microbiota has a relevant role in animal nutrition, modulation of the immune system and protection against pathogen invasion. Interest in algae as source of nutrients and functional ingredients for aquafeeds is increasing in order to substitute conventional feedstuffs by more sustainable resources. The diet is an important factor in the modulation of the microbiota composition, and functional ingredients have been proposed to shape the microbiota and contribute benefits to the host. However, fish microbiome research is still limited compared to other hosts. Solea senegalensis is a flat fish with high potential for aquaculture in South Europe. In this study, a characterization of the microbiome of S. senegalensis (GI) tract and the effects of feeding Ulva ohnoi supplemented diet has been carried out. Differences in the composition of the microbiota of anterior and posterior sections of S. senegalensis GI tract have been observed, Pseudomonas being more abundant in the anterior sections and Mycoplasmataceae the dominant taxa in the posterior GI tract sections. In addition, modulation of the GI microbiota of juvenile Senegalese sole fed for 45 days a diet containing low percentage of U. ohnoi has been observed in the present study. Microbiota of the anterior regions of the intestinal tract was mainly modulated, with higher abundance of Vibrio spp. in the GI tract of fish fed dietary U. ohnoi.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Modulation of Intestinal Microbiota in Solea senegalensis Fed Low Dietary Level of Ulva ohnoi

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Ulvan is a water-soluble complex anionic sulfated polysaccharide, representing a major constituent of the cell walls of green seaweeds of the order Ulvales (Chlorophyta) [13,14]. Ulvan's physical properties and pharmacological activity have been thoroughly investigated [15][16][17][18][19][20][21][22], with biological activities, such as antibacterial [23,24], antiviral [25,26], anticoagulant [27], antioxidant [28,29], and antihyperlipidemic [30], being frequently reported. Additionally, the intrinsic cytocompatibility of ulvan [31,32] highlights its suitability for the development of novel scaffolds.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Sponge-Like Scaffolds Based on Ulvan and Gelatin: Design, Characterization and Evaluation of Their Potential Use in Bone Tissue Engineering

et al. 2020

View full text Add to dashboard Cite

Ulvan, a bioactive natural sulfated polysaccharide, and gelatin, a collagen-derived biopolymer, have attracted interest for the preparation of biomaterials for different biomedical applications, due to their demonstrated compatibility for cell attachment and proliferation. Both ulvan and gelatin have exhibited osteoinductive potential, either alone or in combination with other materials. In the current work, a series of novel hybrid scaffolds based on crosslinked ulvan and gelatin was designed, prepared and characterized. Their mechanical performance, thermal stability, porosity, water-uptake and in vitro degradation ability were assessed, while their morphology was analyzed through scanning electron microscopy. The prepared hybrid ulvan/gelatin scaffolds were characterized by a highly porous and interconnected structure. Human adipose-derived mesenchymal stem cells (hADMSCs) were seeded in selected ulvan/gelatin hybrid scaffolds and their adhesion, survival, proliferation, and osteogenic differentiation efficiency was evaluated. Overall, it was found that the prepared hybrid sponge-like scaffolds could efficiently support mesenchymal stem cells’ adhesion and proliferation, suggesting that such scaffolds could have potential uses in bone tissue engineering.

show abstract

“…Seaweeds already have huge economic relevance, their worldwide production volume being approximately 32.4 million tonnes, of which 97.1% is provided by aquaculture (FAO, 2020). Specimens of the genus Ulva, for instance, can be cultivated for human and aquatic animal consumption (Fleurence et al, 2012), or for the extraction of biologically active substances, such as ulvan (Silva et al, 2013). Earlier works evaluating their cultivation in a biofloc system environment, or employing biofloc-rich water as fertilizer, are scarce, and some are not focused on assessing the production performance of the macroalgae per se (Brito et al, 2014;Peña-Rodríguez et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

CULTIVATION OF THE SEAWEED <i>Ulva</i> spp. WITH EFFLUENT FROM A SHRIMP BIOFLOC REARING SYSTEM: DIFFERENT SPECIES AND STOCKING DENSITY

Martins¹,

Silva²,

Tarapuez³

et al. 2020

Bol. Inst. Pesca

View full text Add to dashboard Cite

This work evaluated the use of effluent from a marine shrimp biofloc rearing system to cultivate the green seaweed Ulva. First, the growth of two Ulva species, U. ohnoi and U. fasciata, was evaluated. Second, the best-performing species was cultivated under two different stocking densities (2 g L-1 and 4 g L-1) to evaluate both growth and nutrient uptake rates, considering total ammonia nitrogen, nitrate, and orthophosphate. In both cases, environmental variables were monitored, and the cultivation medium, consisting of 25% biofloc water and 75% seawater, was exchanged weekly. U. ohnoi grew significantly better, considering all variables evaluated (p<0.05). The smaller stocking density produced a higher specific growth rate (p<0.05). Yield, however, was unaffected (p≥0.05). No significant differences in the nutrient uptake rates were observed (p≥0.05). Overall, this work highlights the importance of species selection for seaweed destined for aquaculture. Additionally, it also optimizes the cultivation of seaweeds, specifically U. ohnoi, using effluent from biofloc systems.

show abstract

The Marine Macroalgae of the Genus Ulva: Chemistry, Biological Activities and Potential Applications

Cited by 15 publications

References 67 publications

Modulation of Intestinal Microbiota in Solea senegalensis Fed Low Dietary Level of Ulva ohnoi

Modulation of Intestinal Microbiota in Solea senegalensis Fed Low Dietary Level of Ulva ohnoi

Hybrid Sponge-Like Scaffolds Based on Ulvan and Gelatin: Design, Characterization and Evaluation of Their Potential Use in Bone Tissue Engineering

CULTIVATION OF THE SEAWEED <i>Ulva</i> spp. WITH EFFLUENT FROM A SHRIMP BIOFLOC REARING SYSTEM: DIFFERENT SPECIES AND STOCKING DENSITY

Contact Info

Product

Resources

About