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  • Title: Structural, functional, and biological properties of potato peel oligosaccharides.
    Author: Jeddou KB, Bouaziz F, Helbert CB, Nouri-Ellouz O, Maktouf S, Ellouz-Chaabouni S, Ellouz-Ghorbel R.
    Journal: Int J Biol Macromol; 2018 Jun; 112():1146-1155. PubMed ID: 29408417.
    Abstract:
    Enzymatic hydrolysis of water-soluble polysaccharides from potato peel waste (PPPW) generates low molecular weight oligosaccharides with a yield of 63%. The oligosaccharides generated from potato peel polysaccharides (OPPP) were purified by Superdex-30 column. The results showed the presence of 8 peaks (OPPP1-OPPP8). The identification of all the fractions by chromatography analysis (GC-FID) illustrated that the most prominent residues were glucose with traces of galactose, arabinose and rhamnose. Finally, mass spectrometry (MALDI-ToF-ToF) analysis showed that the generated oligosaccharides were heterogeneous and contained different degree of polymerization (DP). Indeed, the obtained oligosaccharides fractions OPPP3, OPPP4, OPPP5, OPPP6 and OPPP7 were compose of the following degree of polymerization DP5; DP4; DP2; DP1 and DP1, respectively. Potato peel oligosaccharides (OPPP) efficiency were tested using different concentrations in functional properties. The results showed good foaming and emulsion properties. This study also aimed to investigate the antioxidant activity of OPPP. The items explored included the DPPH radical-scavenging capacity (IC50 OPPP=2.5mg/mL), reducing power (OD: 0.622±0.032 at a concentration of 20mg/mL), β-carotene bleaching inhibition activity (45.335±3.653%), and also the ABTS radical scavenging activity (14.835±0.1%).These findings indicate that potato peel oligosaccharides have potent antioxidant activities. Hence, one can suggest that these oligosaccharides might contribute as additives in food, pharmaceutical and cosmetic preparations.
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