%0 Journal Article
%T Antimicrobial effect of a crude sulfated polysaccharide from the red seaweed Gracilaria ornata
%A Amorim
%A Rodrigo das Neves dos Santos
%A Rodrigues
%A Jos¨¦ Ari¨¦vilo Gurgel
%A Holanda
%A M¨¢rjory Lima
%A Quinder¨¦
%A Ana Lu¨ªza Gomes
%A Paula
%A Regina C¨¦lia Monteiro de
%A Melo
%A Vania Maria Maciel
%A Benevides
%A Norma Maria Barros
%J Brazilian Archives of Biology and Technology
%D 2012
%I Tecpar
%R 10.1590/S1516-89132012000200001
%X the aim of this study was to determine the yield, chemical composition, specific rotation (sr), infrared (ir) spectroscopy and the effect on bacterial growth of a crude sulfated polysaccharide (sp) from the red marine alga g. ornata (go). go-1 (25¡ãc), go-2 (80¡ãc), and go-3 (80¡ãc) were sequentially extracted and yielded 9.2%. the contents of sulfate (5.88-10.3%) and proteins (0.1-3.7%) were small. the values of sr were [¦Ì]d20¡ãf -19.0, -51.0, and -56.5, respectively. ir spectrums showed the presence of galactose-4 sulfate and absence of 3,6-anydrogalactose-2 sulfate, galactose-6 sulfate and galactose-2 sulfate. sr and ir techniques confirmed sps. go-3 was tested on the growth of bacteria (bacillus subtilis, staphylococcus aureus, enterobacter aerogens, escherichia coli, pseudomonas aeruginosa, salmonela choleraesuis and salmonela typhi), but only e. coli was inhibited.
%K rhodophyta
%K sulfated macromolecules
%K chemical analysis
%K antimicrobial.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-89132012000200001&lng=en&nrm=iso&tlng=en