| Literature DB >> 26492855 |
Khalef Lefsih1, Cédric Delattre2, Guillaume Pierre2, Philippe Michaud2, Tejraj M Aminabhavi3, Farid Dahmoune4, Khodir Madani4.
Abstract
Total Pectins Fraction (TPF) was extracted at room temperature from dried cladodes of Opuntia ficus indica. TPF is constituted of three pectic fractions WSP, CSP and ASP, which are made up of 66.6%, 44.3% and 81.1% (w/w) of galacturonic acid, respectively. The antioxidant ability of TPF increased with the concentration increasing. It scavenged hydroxyl radical by 90% and chelated 90% of ferrous ions at 5 g/L. FTIR study was carried out. Strong characteristic absorption peaks at 1,618 cm(-1) assigned to the vibration of COO(-) group of galacturonic acid. In the fingerprint region, we noticed three well-defined peaks at 1054, 1085, and 1,154 cm(-1) characteristic of pectic polysaccharides. TPF are non-gelling pectins. The co-crosslinking of TPF with carrageenan was carried out and the gelling behavior was successfully improved. Thermo-sensitive hydrogel was obtained with 82% of TPF and 18% of carrageenan (w/w).Entities:
Keywords: Antioxidant; Carrageenan; Co-crosslinking; FTIR; Gelling behavior; Opuntia ficus indica; Pectin; Viscosity
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Year: 2015 PMID： 26492855 DOI： 10.1016/j.ijbiomac.2015.10.046
Source DB: PubMed Journal: Int J Biol Macromol ISSN： 0141-8130 Impact factor: 6.953