Integrated multitrophic aquaculture imta systems promise largescale production of macroalgae due to their high productivity and. Ulva definition and meaning collins english dictionary. Photosynthesis and growth of ulva ohnoi and ulva pertusa. In europe, it can be found in such countries as bulgaria. However, before valorization fractionation needs to be performed in a controlled way. Caldwell2 1marine resources development institute of jiangsu, huaihai institute of technology, lianyungang 222005, china, 2school of marine science and technology, newcastle university, ridley building, newcastle upon tyne, ne1 7ru, uk. Using molecular analyses we investigated the species composition, diversity, distribution, and relative frequencies of the genus ulva. Species composition, diversity, and distribution of the.
Assessment and characterisation of irelands green tides. A growth trial and a digestibility trial were conducted to evaluate seaweed ulva sp. Media in category ulva genus the following 24 files are in this category, out of 24 total. Food chem toxicol int j publ br ind biol res assoc. Ulva is a ubiquitous macroalgal genus of commercial interest. Molecules free fulltext physicochemical changes of. By the end of the century, the diffusion of co 2 from fossil fuel combustion into surface oceans is expected to cause co 2 and hco 3. The organizing effects of elevated co 2 on competition. Edith congleton became the owner of ulva in 1946 where there was no electricity, no water supply infrastructure, no permanent piers, no regular ferry service, derelict church and several other dwellings. Sep 23, 2017 a growth trial and a digestibility trial were conducted to evaluate seaweed ulva sp. Currently, 128 species accepted taxonomically have been listed all around the. All aspects of basic and applied research on algae are included to provide a common medium for the ecologist.
Ulva linnaeus genus ulvaceae, ulvales is an ubiquitous genera widely distributed in oceans and estuaries. Sulfated polysaccharides from green algae, such as ulvan, are interesting due. The advantages of ulva chlorophyta as an additive in sea. Ulva lactuca is a thin flat green algae growing from a discoid holdfast. Pdf lipid composition, fatty acids and sterols in the.
Cultivation of ulva lactuca with manure for simultaneous. High nutrients and fresh water are often indicated by its presence. Wfd algal bloom assessment revealed that the largest surveyed blooms had an estimated biomass of 2164 metric tonnes ww. The rising demand for natural antioxidants instead of synthetic materials, especially in biomedical applications, has led to increased interest in the search for bioactive compounds with potent. Plant growth biostimulants based on different methods of. Hela cells treated with h 2 o 2 1 mmol l 1 for 3 h exhibited significant damage to their morphology, a significant decrease in cell survival, and a remarkable leakage. The membrane is two cells thick, soft and translucent, and grows attached, without a stipe, to rocks or other algae by a small discshaped. Ulva prolifera is typically a marine species, known in north america from the coasts, inland salt springs, and western salt lakes catling and mckay 1980, mills et al.
Characterization of phenolic compounds of ulva rigida chlorophycae and its antioxidant activity. Ulva prolifera is a species of seaweed in the family ulvaceae that can be found worldwide. Gastrointestinal gi microbiota has a relevant role in animal nutrition, modulation of the immune system and protection against pathogen invasion. Methods anticlastogenic and antigenotoxic activities of ulva rigida crude extracts ure were studied using chromosome aberration ca,sister chromatid exchange sce,and micronuclei. The utilitarian properties were examined in the germination tests on lepidium sativum for three extract dilutions 0. The incentives for utilizing a versatile range of renewable feedstocks in novel ways are continuously increasing. Ulva blooms occur mainly in shallow waters and the decomposition of this alga can produce dangerous vapors. Similar species ulva lactuca but that species is rarer, found in calmer waters and has thinner blades with fewer rhizoids. Volume 225, number 1 august 20 university of chicago. Loret 2, 1 department of chemical engineering, faculty of science, campus ourense, university of vigo, as lagoas, galicia, 32004 ourense, spain. The south africa species of ulva has been well studied 7. Ulva rigida is a very common green marine seaweed distributed worldwide that is commonly used as a popular food ingredient in asian countries as well as in north and south america 1,2. Similar species similar to ulva lactuca but that species is rarer and the margins are not minutely toothed. Protection of hela cells against h 2 o 2 cytotoxicity sana mezghani, ines bourguiba, imen hfaiedh, and mohamed amri 2251, pp.
Ulva lactuca is a species usually resembling lettuce, but genetic analyses demonstrated that other green algae with tubular. The two species compete for light and nitrogen dissolved in water. Conventional theory postulates that associations between marine macrophytes and animals are generally positive. High nutrients and fresh water are often indicated by its. Algal extracts were characterized in terms of polyphenols, micro and macroelements, lipids content, and antibacterial properties. Besides, we assess the chemical composition of bioactive compounds. Complex hostmicrobiome interactions play a decisive role in macroalgal development, especially in ulva spp. Aug 28, 2017 ulva rigida water extracts inhibited significantly the reproduction of influenza virus aaichi h3n2 also in fertile eggs 28.
Species composition, diversity, and distribution of the genus. Description in the benthic flora part i, pages 14, 145 details of anatomy ulva australis areschoug macro foliose plant. Description in the benthic flora part i, pages 142145. Structure and functional properties of ulvan, a polysaccharide from green seaweeds. Ulva fasciata, also known as limu palahalaha and sea lettuce, is a common green alga that is used for consumption in many parts of the world. Characterization of phenolic compounds of ulva rigida. Eologkrl modelling elsevier ecological modelling 7576 1994 485496 a trophic model for ulva rigida in the lagoon of venice g. Interest in algae as source of nutrients and functional ingredients for aquafeeds is increasing in order to substitute conventional feedstuffs by more sustainable resources. Vegetative multiplication also takes place by means of the proliferation of perennial holdfast. Ulva pertusa is a common inhabitant of intertidal areas in japan and is reported to form green tide okamura 1921. Agardh foliose ulva rigida stained blue and viewed microscopically 1, 2. Sulfated polysaccharides from green algae, such as ulvan, are interesting due to the rare sugar constituents which can be utilized for new materials and chemicals in industry.
Aqueous extraction of the sulfated polysaccharide ulvan. Ulva lactuca, a source of troubles and potential riches. Ulva species are earlysuccessional algae, quickly taking over new substrate on boulders that are cleared by storm disturbance. Ulva usually multiply bymeans of fragments which are accidentally produced from a thallus. Conspecificity of the model organism ulva mutabilis and. This paper presents evidence, however, that a common species of green macroalga, ulva lactuca l. Ulva rigida is commonly found in areas where nutrients are high, wave forces low and herbivory reduced.
Collection of algal biomass and preparation of reproductive material. This study deals with the antimicrobial potential assessment of ulva rigida, in regard to collection period and sampling site. This page was last edited on 3 january 2020, at 08. We did find potentially harmful metals in the seaweed we analyzed fig. Dna analysis proved that the sea lettuce ulva rigida was present in 7 of the 8 seaweed blooms in our study. Ulva lactuca is a green macro alga involved in devastating green tides observed worldwide. In the present study, we tested the antioxidant effect of both a crude extract and an ethanol precipitate of ulva rigida in hela cells exposed to hydrogen peroxide h 2 o 2. Aqueous extraction of the sulfated polysaccharide ulvan from. The journal of phycology was founded in 1965 by the phycological society of america. Modulation of intestinal microbiota in solea senegalensis. The diet is an important factor in the modulation of the microbiota. Extracts of this seaweed were shown antihypercholestierinemic, antioxidant and antihyperglycemic activities. Using molecular analyses we investigated the species composition, diversity, distribution, and relative frequencies of the genus ulva along the entire coast of jeju island, off the southern tip of korea. The competition between ulva rigida and the seagrass zostera marina is described by means of a mathematical model.
It is tolerant of stressful conditions, and its presence often indicates freshwater input or pollution. Since the twentyfirst century begins, the scientific interest for seaweed had increased in occidental countries. Nov 15, 2019 ulva pertusa is a common inhabitant of intertidal areas in japan and is reported to form green tide okamura 1921. Volume 225, number 1 august 20 university of chicago press. Modulation of intestinal microbiota in solea senegalensis fed. What can sea lettuce tell us about coastal pollution. Jun 23, 2017 the incentives for utilizing a versatile range of renewable feedstocks in novel ways are continuously increasing. Dna sequences identified biomass from all locations as ulva rigida, with the exception of new quay, which was ulva rotundata. This paper presents evidence, however, that a common species of green macroalga, ulva. For more multimedia, look at ulva rigida on wikimedia commons.
The seeding and cultivation of a tropical species of. Antimicrobial fatty acids from green alga ulva rigida. These green tides or blooms are a consequence of human activities. To determine the in vitro possible clastogenic and cytotoxic activities of uh,a rigida crude extracts up,e,and identify their antigenotoxic and protective effects on chemotherapeutic agent mitomycinec. In europe, it can be found in such countries as bulgaria, france, great britain. Cellwall polysaccharides from the marine green alga ulva rigida ulvales, chlorophytanmr analysis of ulvan oligosaccharides. Ulva rigida is a worldwide distributed green alga and is commenly used for human nutrition. Nutritional value of seaweed ulva rigida for poultry. Ulva compressa is a species of seaweed in ulvaceae family that can be found in north america, mediterranean sea, and throughout africa and australia. Each macroalgal species was consumed at least once by tripneustes gratilla and significant preferences always involved ulva as the most preferred species. Towards this goal, the 6week growth trial utilized increasing levels 0, 6. Desiccation tolerance in the chlorophyte green alga ulva. Arasaki reported that an invasive species of ulva, other than u.
Arasaki 1984 reported that an invasive species of ulva,other than u. To determine the in vitro possible clastogenic and cytotoxic activities of uh,a rigida crude extracts up,e,and identify their antigenotoxic and protective effects on chemotherapeutic agent mitomycinec mmc. Ulva compressa is a species of seaweed in ulvaceae family that can be found in north america, mediterranean sea, and. However, we could not find any clear connection between the concentrations of these metals and observed water pollution levels.
C, brining at 25%, and drysalting at 28% and 40% on the quality and nutritional parameters of ulva rigida were evaluated over six months of storage. Physicochemical changes of airdried and saltprocessed ulva. Ulva or enteromorpha is a green macroalgae genus that raises and cultivates around the world. Pdf characterization of phenolic compounds of ulva. Besides, we assess the chemical composition of bioactive. Pdf characterization of phenolic compounds of ulva rigida. Ohno 1988 investigated which ulva species form green tide in ura.
Species identification was performed for 215 samples collected from 23 sites, based on comprehensive phylogenetic and model. Commercial ulva production has grown by 448 percent from 2006 to 2012 5 6. Extracts of this seaweed were shown antihypercholestierinemic, antioxidant and antihyperglycemic. Marine drugs free fulltext ulva lactuca, a source of. A trophic model for ulva rigida in the lagoon of venice. The organizing effects of elevated co 2 on competition among. Ulva armoricana ulvales, chlorophyceae was collected on the beach in plestinlesgreves 4839. Ulva species are currently south africas largest aquaculture products by volume and are predominately used as feed in the abalone haliotis midae l aquaculture industry 19 20. Overall, the main changes occurred in physical aspects during storage time, with u. Species diversity in the genus ulva remains understudied worldwide. Interest in algae as source of nutrients and functional.
Some blooms contained significant amounts of as, cu, cr, pb and sn. Algal extracts were characterized in terms of polyphenols, micro and macroelements. A study was conducted to establish the nutritive value true metabolizable energy tmen, apparent metabolizable energy. The high protein, lipid, mineral and vitamin content of marine u. Dna sequences identified biomass from all locations as ulva rigida, with. W, english channel britt any, france, on 18 june 2012. Four species of macroalgae ulva rigida, ecklonia maxima, porphyra capensis and gigartina polycarpa were assessed by pairwise preference tests. The study pointed that ulva rigida extract reduced the mortality rate of white mice in experimental influenza infection when applied orally and extended the time of survival. We explored two methods for obtaining aqueous extracts. In asian countries, the use of them in human and animal feed, traditional medicine, and compost in agriculture is well documented. Integrated multitrophic aquaculture imta systems promise largescale production of macroalgae due to their high productivity and environmental sustainability.
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