| post-coital contraceptive activity of crude extracts of sri lankan marine red algae. | this study investigates the potential of marine red algae as a source for post-coital contraceptive agents using three varieties: gracilaria corticata, gelidiella acerosa and jania sp. methanol: methylene chloride (1:1) extracts of these red algae were made and were orally administered (500 or 1000 mg/kg/day) to female rats from day 1 to day 7 of pregnancy. the higher dose of gracilaria corticata and both doses of gelidiella acerosa extracts produced significant post-coital contraceptive activit ... | 1994 | 7805379 |
| isolation, chemical investigation and antiviral activity of polysaccharides from gracilaria corticata (gracilariaceae, rhodophyta). | polysaccharides were sequentially extracted from the agarophyte gracilaria corticata. chemical analysis combined with infrared spectroscopy showed that the cold water extracted material consists mainly of a high molecular weight sulfated galactan. most of the sulfate groups are alkali labile and are located at c-4 of the 1,3-linked d-galactose units and c-6 of the 1,4-linked l-galactose residues. the autoclaved extracts contain agar type polysaccharide having a high pyruvate content and a variab ... | 2002 | 12559431 |
| polysaccharides from gracilaria corticata: sulfation, chemical characterization and anti-hsv activities. | in this study, we have analyzed water-extracted polysaccharides of gracilaria corticata. the water extract (we), a galactan-containing sub-fraction (f3) and their hyper sulfated derivatives (wes1, wes2, f3s1 and f3s2) had anti-hsv activity with inhibitory concentration 50% (ic50) from 1.1 to 27.4 microg/ml. sub-fraction f3, which has a molecular mass of 30 kda, consists of a backbone of beta-(1-->3) and alpha-(1-->4)-linked-galactopyranosyl residues. this linear galactan contained gal2xyl1, gal2 ... | 2008 | 18694781 |
| characterization of microbulbifer strain cmc-5, a new biochemical variant of microbulbifer elongatus type strain dsm6810t isolated from decomposing seaweeds. | a gram-negative, rod-shaped, non-spore forming, non-motile and moderate halophilic bacteria designated as strain cmc-5 was isolated from decomposing seaweeds by enrichment culture. the growth of strain cmc-5 was assessed in synthetic seawater-based medium containing polysaccharide. the bacterium degraded and utilized agar, alginate, carrageenan, xylan, carboxymethyl cellulose and chitin. the strain was characterized using a polyphasic approach for taxonomic identification. cellular fatty acid an ... | 2009 | 19701665 |
| seaweeds as a source of lead compounds for the development of new antiplasmodial drugs from south east coast of india. | the problems of resistant lines of plasmodium falciparum are escalating. twelve seaweeds species belong to five different families (sargassaceae, gracilariaceae, hypneaceae, corallinaceae and halimedaceae) were collected from mandapam coastal area, and the seaweeds extracts were tested for in vitro antiplasmodial activity against p. falciparum. among the tested seaweeds, gracilaria verrucosa (ic(50) 5.55 μg.ml(-1)) and hypnea espera (ic(50) 8.94 μg.ml(-1)) showed good antiplasmodial activity, an ... | 2010 | 21188600 |
| evaluation of in vitro anti-leishmanial activity of some brown, green and red algae from the persian gulf. | leishmaniasis is a protozoan parasitic disease which is transmitted by the female phlebotomus sand fly and is prevalent in four continents.the first-choice treatment for the leishmaniasis is pentavalent antimonials, which are potentially toxic and often ineffective and use of them exhibit therapeutic failure. these pharmaceutical problems point towards the need to develop novel chemotherapeutic agents. seaweeds are considered as source of bioactive metabolites characterized by a broad spectrum o ... | 2011 | 21796865 |
| antiviral activity against dengue virus of diverse classes of algal sulfated polysaccharides. | diverse classes of sulfated polysaccharides obtained from the red seaweeds (rhodophyta) grateloupia indica, scinaia hatei and gracilaria corticata, the brown seaweeds (phaeophyta) stoechospermum marginatum and cystoseira indica and the green seaweed (chlorophyta) caulerpa racemosa were assayed for antiviral activity against the four serotypes of dengue virus (denv). denv-2 was the most susceptible serotype to all polysulfates, with inhibitory concentration 50% values in the range 0.12-20 μg/ml. ... | 2012 | 22652218 |
| immunity enhancement with administration of gracilaria corticata and saccharomyces cerevisiae compared to gamma irradiation in expose to wssv in shrimp, in juvenile litopenaeus vannamei: a comparative study. | this paper investigates the efficacy of gracilaria corticata, saccharomyces cerevisiae and gamma irradiation wssv as immunostimulants to white shrimp litopenaeus vannamei. seven hundred and twenty healthy shrimp spf l. vannamei subadult with average weight of 10 ± 1.02 g were collected and divided into 8 groups. the first group (t1) was fed with commercial pellet, the second group (t2) fed with s. cerevisiae (2 g/kg), the third group (t3) fed with g. corticata powder mixed with shrimp feed (2 g/ ... | 2016 | 27377028 |
| evaluation of the proximate, fatty acid and mineral composition of representative green, brown and red seaweeds from the persian gulf of iran as potential food and feed resources. | the proximate, fatty acid and mineral composition were determined for green (ulva lactuca and enteromorpha intestinalis), brown (sargassum ilicifolium and colpomenia sinuosa) and red (hypnea valentiae and gracilaria corticata) seaweeds collected from the persian gulf of iran. results showed that the seaweeds were high in carbohydrate (31.8-59.1%, dry weight) and ash (12.4-29.9%) but low in lipid content (1.5-3.6%). the protein content of red or green seaweeds was significantly higher (p < 0.05) ... | 2012 | 24293698 |
| bioactive potential and structural chracterization of sulfated polysaccharide from seaweed (gracilaria corticata). | the sulfated polysaccharide was purified through anion-exchange and gel permeation column chromatography. the isolated sulfated polysaccharide from c. corticata contains 84% of carbohydrate, 0% of protein, 19.7% of ash and 29.4% of moisture was found. the carbon, hydrogen, nitrogen and sulfur content as 33.19%, 5.91%, 7.21% and 3.75%. the molecular weight of sulfated polysaccharide was found to be 43kda. the sugar was composed of (90.11%), glucose (5.47%), xylose (2.30%) and mannose (2.12%). the ... | 2017 | 27702543 |
| cytotoxic, antioxidant and phytochemical analysis of gracilaria species from persian gulf. | marine algae, also called seaweeds, are abundantly present in the coastal area of iran, especially in persian gulf. these plants contain important phytochemical constituents and have potential biological activities. the present study investigated the presence of phytochemical constituents and total phenolic quantification of the seaweeds gracilaria salicornia and gracilaria corticata. cytotoxicity of seaweeds was tested against ht-29, hela, and mcf-7 cell lines. antioxidant potential of these tw ... | 2016 | 27656608 |
| a simple process for recovery of a stream of products from marine macroalgal biomass. | the present study describes a simple process for recovering a stream of products sequentially including bioethanol from the fresh biomass of the red seaweed gracilaria corticata. from processing of 100g fresh biomass (∼12.2 g dry), 166 ± 3 μg/g r-phycoerythrin, 126±4μg/g r-phycocyanin can be realized on fresh weight basis, and 1.41 ± 0.03% crude lipid, 22.45 ± 0.53% agar, 12.39 ± 0.85% soil conditioner, 2.89 ± 0.04% bioethanol on dry weight basis along with 318 ± 3 ml of mineral rich liquid with ... | 2016 | 26722815 |
| in vitro analysis of antioxidant, antimicrobial and antiproliferative activity of enteromorpha antenna, enteromorpha linza and gracilaria corticata extracts. | seaweeds are taxonomically diverse benthic algae, which are rich in bioactive compounds. these compounds have a potential application in medicine. | 2013 | 24624206 |
| retraction. the occurrence of bleaching stripe disease in gracilaria corticata and controlling of the disease using quorum quenching approach. | | 2013 | 24167831 |
| quantification of selected endogenous hydroxy-oxylipins from tropical marine macroalgae. | the present study investigated the contents of hydroxy-oxylipins hydroxyoctadecadienoic acids (hodes), hydroxyoctadecatrienoic acids (hotres), and hydroxyeicosatetraenoic acids (hetes) in 40 macroalgae belonging to the chlorophyceae, rhodophyceae and, phaeophyceae. the hydroxy-oxylipin content was low and ranged from 0.14 ± 0.012 ng/g (codium dwarkense) to 8,161.9 ± 253 ng/g (chaetomorpha linum) among the chlorophyceae, 345.4 ± 56.8 ng/g (scytosiphon lomentaria) to 2,574.5 ± 155.5 ng/g (stoechos ... | 2014 | 24052492 |
| screening for antimalarial and acetylcholinesterase inhibitory activities of some iranian seaweeds. | alcoholic extracts of 8 different types of seaweeds from iran's persian gulf were tested for their antimalarial and acetylcholinesterase enzyme (ache) inhibitory activities for the first time. a modified ellman and ingkaninan method was used for measuring ache inhibitory activity in which galanthamine was used as the reference. the antimalarial assay was performed using microculture radioisotope technique. mefloquine and dihydroartemisinin were uased as the standards. the extract of sargassum bo ... | 2013 | 24019820 |
| preparation and characterization of mucilage polysaccharide for biomedical applications. | in the present investigation, the polysaccharide/mucilage from waste of abelmoscus esculentus by modification in hot extraction using two different solvents (acetone, methanol) were extracted, characterized and further compared with seaweed polysaccharide for their potential applications. the percentage yield, emulsifying capacity and swelling index of this mucilage were determined. the macro algae and okra waste, gave high % yield (22.2% and 8.6% respectively) and good emulsifying capacity (ec% ... | 2013 | 23987320 |
| the occurrence of bleaching stripe disease in gracilaria corticata and controlling of the disease using quorum quenching approach. | in the present study, the gram-negative bacteria vibrio and pseudoalteromonas species associated with gracilaria corticata found to be opportunistic pathogens that caused bleaching stripe disease on its host. consortium of these pathogens induced maximum disease symptoms with 27.3 mm long bleaching stripe. presence of gram-positive bacteria bacillus reduced the disease appearances in the co-culture of gram-negative bacteria. each gram-negative bacteria had capability to produce two different typ ... | 2013 | 23651322 |
| estimation of lipid hydroperoxide levels in tropical marine macroalgae. | the incipient levels of lipid hydroperoxides (lhpos) were determined in selected green, brown, and red macroalgae by the fox assay using hydroperoxy hplc mix. the lhpos contents varied between the investigated species and showed relatively low values in this study. among the greens, it varied from 12 ± 6.2 μg · g(-1) (codium sursum) to 31.5 ± 2.8 μg · g(-1) (ulva lactuca), whereas in reds, from 5.7 ± 1.6 μg · g(-1) (gracilaria corticata) to 46.2 ± 6 μg · g(-1) (sarconema filiforme), and in brown ... | 2012 | 27009988 |
| equilibrium, kinetic and thermodynamic studies on the biosorption of reactive acid dye on enteromorpha flexuosa and gracilaria corticata. | biosorption is an emerging, eco-friendly and economical method for treating the wastewater effluents. compared to many other biological materials, algae biomass proved to be the better biosorbent due to the presence of cell wall polymers in them. | 2012 | 22161297 |
| comparative evaluation and selection of a method for lipid and fatty acid extraction from macroalgae. | a comparative evaluation of bligh and dyer, folch, and cequier-sánchez methods for quantitative determination of total lipids (tls) and fatty acids (fas) was accomplished in selective green (ulva fasciata), red (gracilaria corticata), and brown algae (sargassum tenerrimum) using a full factorial categorical design. applications of sonication and buffer individually on lipid extraction solvent systems were also evaluated. the fa recoveries obtained from the aforementioned methods were compared wi ... | 2011 | 21539805 |
| genetic analysis and marker assisted identification of life phases of red alga gracilaria corticata (j. agardh). | the present study firstly reports the cytological and molecular marker assisted differentiation of isomorphic population of gracilaria corticata (j. agardh) with inter and intra-phasic genetic diversity analysis using issr markers. the genetic diversity of inbreeding population of g. corticata as determined in terms of percentage of polymorphic loci (ppl), average heterozygosity (he) and shannon's weaver index (i) were 59.80, 0.59 and 1.21, respectively. the inter-phasic pair-wise average polymo ... | 2011 | 21116855 |
| radical scavenging and singlet oxygen quenching activity of extracts from indian seaweeds. | free radicals and singlet oxygen are responsible for oxidative stress related diseases and many natural compounds are known to have antioxidant properties. in this study, extracts from brown and red seaweeds of indian origin were evaluated for their ability to scavenge different radicals and quench singlet oxygen. the crude extract in methanol and its fractions in different solvents were evaluated for their activity. the methanol extract and its fractions from brown seaweed exhibited higher 2,2' ... | 2010 | 23572608 |
| effect of soda ash industry effluent on agarophytes, alginophytes and carrageenophyte of west coast of india. | this paper presents the results of a study on the impact of the effluent released by the soda ash industry on important red and brown macro algal species gelidiella acerosa, gracilaria corticata, soleria robusta, sargassum tenerrimum, padina tetrastromatica in the tidal zone around veraval, on the west coast of india, in the lowest low water tide of december 2003. the study examined the effect of effluent discharge on availability of biomass and percentage of phyco-colloids extraction such as ag ... | 2009 | 18583039 |
| effect of soda ash industry effluent on bioaccumulation of metals by seaweeds of coastal region of gujarat, india. | the bioaccumulation ability of five species of seaweeds to 15 metals was studied in the seawater polluted by the effluent of soda ash industry. the bioaccumulation of al, mn and fe in these seaweeds increased continuously as distance increased from outfall. however, padina tetrastromatica showed reverse trend. quite a number of metals like au, co, hg, ni, pb, pt and sn were not recorded from any species of seaweeds from all sampling stations. cr was recorded in gracillaria acerosa from control s ... | 2007 | 17258393 |