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Phylogenetic diversity, polyamine pattern and DNA base composition of members of the order Planctomycetales.
The distribution of PUT, HSPD and spermidine reflects the phylogenetically diversity within the Planctomycetales as closely related representatives of the phylogenetic groups defined by described species and novel isolates exhibit similar polyamine patterns. Expand
Chemical Structure and Antiviral Activity of Water-soluble Sulfated Polysaccharides from Surgassum latifolium
Crude water-soluble s ulfated po lysaccharides (SP) have been isolated f rom brown algae Surgassium latifolium by hot water extraction f ollowed by ethanol precipitation. The polysaccharide wasExpand
Antiviral Sulphated Polysaccharide from Brown Algae Padina pavonia Characterization and Structure Elucidation
The hot water extract of brown alga Padina pavonia was fractionated into a neutral fraction P1 and a sulphated heteropolysaccharaide P2. Based on the antiviral activity P2 was fractionated by sizeExpand
Isolation, characterization and biological activities of exopolysaccharide produced by Bacillus marinus
The biological activities of crude EPS and BMEPS as antiviral against MDCK and H1N1 virus and antioxidant were done and F-6 could be considered as an effective natural antiviral, antioxidant and antitumor sources. Expand
Synthesis and characterization of poly(acrylic acid)-g-sodium alginate hydrogel initiated by gamma irradiation for controlled release of chlortetracycline HCl
AbstractpH-Sensitive hydrogel was synthesized by gamma radiation crosslinking for sodium alginate extracted from the marine brown alga Turbinaria decurrens and acrylic acid. Preparation of theExpand
Removal Of Lead Ions From Aqueous Solution Using (Sodium Alginate / Itaconic Acid) Hydrogel Prepared By Gamma Radiation
In the present investigation a sodium alginate, extracted from the brown marine alga Turbinaria decurrens -based hydrogel, grafted polymerized with poly(itaconic acid), NaAlg/IA, was employed inExpand
Ribonucleotide reductase in Bacillus subtilis — evidence for a Mn‐dependent enzyme
A reversible impairment of DNA formation and ribonucleotide reduction upon manganese depletion in Bacillus subtilis demonstrated through in vivo labeling with nucleic acid precursors and enzyme assays with ether‐permeabilized cells is reported. Expand
Removal of methylene blue dye using biodegradable hydrogel and reusing in a secondary adsorption process
AbstractSodium alginate poly itaconic acid (NaAlg/IA) hydrogel was prepared by free radical polymerization using gamma radiation. Characterization of the hydrogel was done by thermogravimetric andExpand
Polysaccharides from Padina pavonia: Chemical structural and antioxidant activity
The exopolysaccharide was obtained from Padina pavonia by extraction. The polysaccharides were purified by gel permeation chromatography on Sephacryl S-200 column, when three polysaccharide fractionsExpand
6-Amino-2-thio- and 6-Aminouracils as Precursors for the Synthesis of Antiviral and Antimicrobial Methylenebis(2-thiouracils), Tricyclic Pyrimidines, and 6-Alkylthiopurine-2-ones
Summary.Several derivatives of 5-arylmethylenebis(1-methyl-6-amino-2-thiouracils) and 5-aryldipyrimidopyridines were prepared by stirring of 6-amino-1-methyl-2-thiouracil and 6-amino-1-benzyluracilExpand