A Chemical Research on Three Red Algae Gracilaria bursa-pastoris, Phyllophora crispa and Laurencia obtusa var. pyramidata
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چکیده
منابع مشابه
Chemical Composition of Laurencia obtusa Extract and Isolation of a New C15-Acetogenin.
A new C15-acetogenin, sagonenyne (20), exhibiting an unusual single tetrahydropyran ring was isolated from an ethyl acetate extract of Laurencia obtusa collected on the Corsican coastline. Its structure was established by detailed NMR spectroscopic analysis, mass spectrometry, and comparison with literature data. Twenty-three known compounds were identified in the same extract by means of colum...
متن کاملIsolaurenidificin and Bromlaurenidificin, Two New C15-Acetogenins from the Red Alga Laurencia obtusa.
Chromatographic fractionation of the CH₂Cl₂/MeOH extract of the Red Sea red alga Laurencia obtusa gave two new hexahydrofuro[3,2-b]furan-based C15-acetogenins, namely, isolaurenidificin (1) and bromlaurenidificin (2). The chemical structures were elucidated based on extensive analyses of their spectral data. Compounds 1 and 2 showed no toxicity (LC50 > 12 mM) using Artemia salina as test organi...
متن کاملPerspective Research Progress in Cold Responses of Capsella bursa-pastoris
Plants respond to cold stress by modulating biochemical pathways and array of molecular events. Plant morphology is also affected by the onset of cold conditions culminating at repression in growth as well as yield reduction. As a preventive measure, cascades of complex signal transduction pathways are employed that permit plants to endure freezing or chilling periods. The signaling pathways an...
متن کاملEcological roles of natural products of the Brazilian red seaweed Laurencia obtusa.
Laboratory and field experiments were performed to assess the ecological roles of natural products produced by the Brazilian red seaweed Laurencia obtusa. Laboratory assays revealed that the natural concentration of the crude organic extract of L. obtusa significantly inhibited feeding by two herbivores: the crab Pachygrapsus transversus and the sea urchin Lytechinus variegatus. It was verified...
متن کاملBiosorption of Zinc on to Gracilaria Corticata (Red Algae) Powder and Optimization using Central Composite Design
This paper presents the biosorption of zinc from aqueous solutions using Gracilaria corticata (red algae) powder as a biosorbent. The equilibrium studies on biosorption of Zinc are carried out in batch process. The extent of removal depends on initial concentration of Zinc ion, pH, dosage, temperature etc. The optimum dosage is 15 g/L at the equilibrium agitation time of 60 min. The % biosorpti...
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ژورنال
عنوان ژورنال: Asian Journal of Chemistry
سال: 2014
ISSN: 0970-7077,0975-427X
DOI: 10.14233/ajchem.2014.16793