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Sulfated polysaccharides from Loligo vulgaris skin: Potential biological activities and partial purification

AuthorsAbdelmalek, Baha Eddine; Sila, Assaâd; Krichen, Fatma; Karoud, Wafa; Martínez Álvarez, Óscar ; Ellouz-Chaabouni, Semia; Ayadi, Mohamed Ali; Bougatef, Ali
KeywordsAntihypertensive properties
Antimicrobial activity
Antioxidant activity
Sulfated polysaccharides
Squid skin
Issue Date2015
CitationInternational Journal of Biological Macromolecules 72: 1143-1151 (2015)
AbstractThe characteristics, biological properties, and purification of sulfated polysaccharides extracted from squid (Loligo vulgaris) skin were investigated. Their chemical and physical characteristics were determined using X-ray diffraction and infrared spectroscopic analysis. Sulfated polysaccharides from squid skin (SPSS) contained 85.06% sugar, 2.54% protein, 1.87% ash, 8.07% sulfate, and 1.72% uronic acid. The antioxidant properties of SPSS were investigated based on DPPH radical-scavenging capacity (IC50=19.42mgmL-1), hydrogen peroxide-scavenging activity (IC50=0.91mgmL-1), and β-carotene bleaching inhibition (IC50=2.79mgmL-1) assays. ACE-inhibitory activity of SPSS was also investigated (IC50=0.14mgmL-1). Further antimicrobial activity assays indicated that SPSS exhibited marked inhibitory activity against the bacterial and fungal strains tested. Those polysaccharides did not display hemolytic activity towards bovine erythrocytes. Fractionation by DEAE-cellulose column chromatography showed three major absorbance peaks. Results of this study suggest that sulfated polysaccharides from squid skin are attractive sources of polysaccharides and promising candidates for future application as dietary ingredients.
Publisher version (URL)https://doi.org/10.1016/j.ijbiomac.2014.09.041
Identifiersdoi: 10.1016/j.ijbiomac.2014.09.041
issn: 1879-0003
Appears in Collections:(ICTAN) Artículos
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