Article (Scientific journals)
Physicochemical properties of water-soluble polysaccharides from black cumin seeds
Trigui, I.; Yaich, H.; Sila, A. et al.
2018In International Journal of Biological Macromolecules, 117, p. 937-946
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Keywords :
Antioxidant properties; Black cumin seeds; Functional properties; Structural characteristics; Water-soluble polysaccharides
Abstract :
[en] In the present work, water-soluble polysaccharides were isolated from black cumin seeds. Polysaccharides were characterized by their carbohydrate composition, molecular weight, thermal stability and by FTIR, NMR spectroscopy and X-ray diffraction. The surface, the functional and the antioxidant properties of black cumin water-soluble polysaccharides (BCWSP) were also investigated. BCWSP consisted mainly of galacturonic acid (30.20%), glucuronic acid (17.66%) and neutral sugar (22.99%). BCWSP was composed of high peak molecular weight. The FTIR spectrum obtained for BCWSP showed two most important absorptions, at 1659 and 1085 cm−1, which corresponded to COO– of uronic acids and pyranose form, respectively. NMR spectroscopy data suggested that the BCWSP is probably a rhamnogalacturonan backbone with galactan and arabinan side chains. X-ray pattern revealed the semi-crystalline behavior of BCWSP. WHC and OHC of BCWSP were relatively high and varied with temperatures. The polysaccharide zeta potential was greatly affected by pH. Results indicated that the decrease of surface tension has influenced foaming and emulsifying capacities. The DPPH radical scavenging activity of the BCWSP was 63.25% at 1 mg/mL. The BCWSP displayed moderate reductive, β carotene bleaching and chelating abilities. Overall, our results suggested that BCWSP could be used as alternative additives in food and non-food products. © 2018 Elsevier B.V.
Disciplines :
Food science
Author, co-author :
Trigui, I.;  Laboratoire de Valorisation, Analyses et Sécurité des Aliments, Université de Sfax, École Nationale d'Ingénieurs de Sfax, Route de Soukra, Sfax, Tunisia
Yaich, H.;  Laboratoire de Valorisation, Analyses et Sécurité des Aliments, Université de Sfax, École Nationale d'Ingénieurs de Sfax, Route de Soukra, Sfax, Tunisia
Sila, A.;  Laboratoire d'Amélioration des Plantes et Valorisation des Agroressources, Université de Sfax, Ecole Nationale d'Ingénieurs de Sfax, Route de Soukra, Sfax, Tunisia
Cheikh-Rouhou, S.;  Laboratoire de Valorisation, Analyses et Sécurité des Aliments, Université de Sfax, École Nationale d'Ingénieurs de Sfax, Route de Soukra, Sfax, Tunisia
Bougatef, A.;  Laboratoire d'Amélioration des Plantes et Valorisation des Agroressources, Université de Sfax, Ecole Nationale d'Ingénieurs de Sfax, Route de Soukra, Sfax, Tunisia
Blecker, Christophe ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > SMARTECH
Attia, H.;  Laboratoire de Valorisation, Analyses et Sécurité des Aliments, Université de Sfax, École Nationale d'Ingénieurs de Sfax, Route de Soukra, Sfax, Tunisia
Ayadi, M. A.;  Laboratoire de Valorisation, Analyses et Sécurité des Aliments, Université de Sfax, École Nationale d'Ingénieurs de Sfax, Route de Soukra, Sfax, Tunisia
Language :
English
Title :
Physicochemical properties of water-soluble polysaccharides from black cumin seeds
Publication date :
2018
Journal title :
International Journal of Biological Macromolecules
ISSN :
0141-8130
eISSN :
1879-0003
Publisher :
Elsevier
Volume :
117
Pages :
937-946
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
MHESR - Ministry of Higher Education and Scientific Research
Available on ORBi :
since 01 March 2019

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