Isolation and characterisation of some antifouling agents from the brown alga <i>Sargassum</i> <i>confusum</i>

Ganti, Viswanadh Sarma; Kim, K. H.; Bhattarai, Hari Datta; Shin, Hyun Woung

doi:10.1080/10286020500034980

Cited by 20 publications

(14 citation statements)

References 22 publications

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“…Isolation and characterization of some antifouling agents from Sargassum confusum were characterized by GC-MS studies by exhibiting the compounds like hexadecane, hexadecanoicacid, cis -9 -octadecanol, 1 -eicosanol, octadecanoic acid [4]. The results of the present study also showed similar findings (Table. 2).…”

Section: Pseudomonas Aeruginosasupporting

confidence: 81%

Synthesis of Silver Nanoparticles and the Antibacterial and Anticancer Activities of the Crude Extract of Sargassum Polycystum C. Agardh

Nallamuthu¹,

Venkatalakshmi²,

Chinnasamy³

et al. 2012

Nano BioMed ENG

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ArticleSynthesis of silver nanoparticles and the antibacterial and anticancer activities of the crude extract of sargassum polycystum C. Agardh AbstractThe potential of the methanolic extract of the seaweed, Sargassum polycystum in the synthesis of silver nanoparticles was investigated. The extract synthesized appreciable quantities of silver nanoparticles of the size 5-7 nm, in 24 hrs. The particles were characterized by UV-Vis, FT-IR spectroscopy, HRTEM and XRD analysis. The results indicated that the algal extract can be utilized as an eco-friendly system for the synthesis of silver nanoparticles for various applications in the field of medicine. The methanolic extract of the alga, silver nitrate solution and their combination were tested for their antimicrobial activities against Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli and Staphylococcus aureus. Anticancer activity of the extract and the silver nanoparticles were evaluated against the breast cancer line MCF-7. Active compounds in the crude extract of the alga were separated and identified as fatty acids by GC-MS analysis. These fatty acids together with the silver nanoparticles exhibited anticancer activity against the breast cancer cell line MCF-7. Results are presented and discussed in detail. Citation: N. Thangaraju, et al. Synthesis of silver nanoparticles and the antibacterial and anticancer activities of the crude extract of sargassum polycystum c.

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Section: Pseudomonas Aeruginosasupporting

confidence: 81%

Synthesis of Silver Nanoparticles and the Antibacterial and Anticancer Activities of the Crude Extract of Sargassum Polycystum C. Agardh

Nallamuthu¹,

Venkatalakshmi²,

Chinnasamy³

et al. 2012

Nano BioMed ENG

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“…In algae, di-(2-ethylhexyl)-phthalate has been isolated from Ceramium rubrum, but the origin of this phthalate had not been elucidated (Noguchi et al 1979). Dioctyl phthalate has also been isolated from the brown algae S. wightii (Sastry and Rao 1995), Ishige okamurae (Cho et al 2005) and S. confusum (Ganti et al 2006). The dioctyl phthalate isolated from S. wightii has shown antibacterial activity against Staphylococcus aureus, Proteus vulgaris, E. coli, Salmonella typhi, S. paratyphi A, S. typhiridium and Pseudomonas aeruginosa (Sastry and Rao 1995).…”

Section: Discussionmentioning

confidence: 99%

“…Total repulsion of the mussel feet was induced by 0.3 mM of DNOP, and 1 mM of DNOP showed a reduction of 7.5% in spore fixation compared to a seawater control. Dioctyl phthalate also has been isolated from S. confusum and tested on spore attachment of U. pertusa (Ganti et al 2006). Concentrations of 1 to 100 µg mL −1 inhibited 53-86% of spore attachment.…”

Section: Discussionmentioning

confidence: 99%

“…Fatty acids can be produced from triglycerides by action of lipases and have to be included in chemical ecology studies (Noguchi et al 1979). The fats and fatty acids from marine organisms can play an important role due to the wide diversity of their biological characteristics and their oxidative enzymes leading to the formation of many other bioactive secondary metabolites (Ganti et al 2006). Indeed, some fatty acids have shown antibacterial or bacteriostatic activities (C8-C12), while C4-C12 fatty acids have antifungal activities and C7-C12 fatty acids inhibit the growth of Chlorella sp.…”

Section: Discussionmentioning

confidence: 99%

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Investigation of the antifouling constituents from the brown alga Sargassum muticum (Yendo) Fensholt

et al. 2008

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One of the most promising alternatives to toxic heavy metal-based paints is offered by the development of antifouling coatings in which the active ingredients are compounds naturally occurring in marine organisms and operating as natural antisettlement agents. Sessile marine macroalgae are remarkably free from settlement by fouling organisms. They produce a wide variety of chemically active metabolites in their surroundings, potentially as an aid to protect themselves against other settling organisms. In this study, a dichloromethane extract from the brown seaweed Sargassum muticum was tested in situ and, after 2 months of immersion, showed less fouling organisms on paints in which the extract was included, compared to paints containing only copper after 2 months of immersion. No barnacles or mussels have been observed on the test rack. Identification by NMR and GC/MS of the effective compound revealed the abundance of palmitic acid, a commonly found fatty acid. Pure palmitic acid showed antibacterial activity at 44 µg mL −1, and also inhibited the growth of the diatom Cylindrotheca closterium at low concentration (EC 50 =45.5 µg mL −1 ), and the germination of Ulva lactuca spores at 3 µg mL −1 . No cytotoxicity was highlighted, which is promising in the aim of the development of an environmentally friendly antifouling paint.

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“…Finally, we can also find reports on the antifouling activity of fats and phthalic acid derivatives from S. confusum [83] and the isolation of farnesylacetones from S.micracanthum [84,85], from S. sagamianum with moderate anticholinesterase activity [86], and from S. siliquastrum with a moderate vasodilatation effect on the basilar arteries of rabbits [87]. Three linear bisnorditerpenes were also isolated from unidentified Sargassum sp.…”

Section: Structural Characterization and Biological Activitymentioning

confidence: 86%

Secondary Metabolites and Biological Activity of Invasive Macroalgae of Southern Europe

et al. 2018

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In this review a brief description of the invasive phenomena associated with algae and its consequences on the ecosystem are presented. Three examples of invasive algae of Southern Europe, belonging to Rodophyta, Chlorophyta, and Phaeophyta, were selected, and a brief description of each genus is presented. A full description of their secondary metabolites and biological activity is given and a summary of the biological activity of extracts is also included. In Asparagopsis we encounter mainly halogenated compounds. From Caulerpa, several terpenoids and alkaloids were isolated, while in Sargassum, meroterpenoids prevail.

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Isolation and characterisation of some antifouling agents from the brown alga Sargassum confusum

Cited by 20 publications

References 22 publications

Synthesis of Silver Nanoparticles and the Antibacterial and Anticancer Activities of the Crude Extract of Sargassum Polycystum C. Agardh

Synthesis of Silver Nanoparticles and the Antibacterial and Anticancer Activities of the Crude Extract of Sargassum Polycystum C. Agardh

Investigation of the antifouling constituents from the brown alga Sargassum muticum (Yendo) Fensholt

Secondary Metabolites and Biological Activity of Invasive Macroalgae of Southern Europe

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