Structural characterization and rheological behavior of a heteroxylan extracted from Plantago notata Lagasca (Plantaginaceae) seeds

Abstract : Plantago notata (Plantaginaceae) is a spontaneous plant from Septentrional Algerian Sahara currently used by traditional healers to treat stomach disorders, inflammations or wound healing. A water-soluble polysaccharide, called PSPN (PolySaccharide fraction from Plantago Notata), was extracted and purified from the seeds of this semi-arid plant. The structural features of this mucilage were evaluated by colorimetric assays, Fourier transformed infrared spectroscopy (FT-IR), gas chromatography coupled to mass spectrometry (GC/MS) and 1H/13C Nuclear Magnetic Resonance (NMR) spectroscopy. PSPN is a heteroxylan with a backbone composed of β-(1,3)-d-Xylp and β-(1,4)-d-Xylp highly branched, through (O)-2 and (O)-3 positions of β-(1,4)-d-Xylp by various side chains and terminal monosaccharides such as α-l-Araf-(1,3)-β-d-Xylp, β-d-Xylp-(1,2)-β-d-Xylp, terminal Xylp or terminal Araf. The physico-chemical and rheological analysis of this polysaccharide in dilute and semi diluted regimes showed that PSPN exhibites a molecular weight of 2.3 × 106 g/mol and a pseudoplastic behavior.
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Carbohydrate Polymers, Elsevier, 2017, 175, pp.96 - 104. 〈10.1016/j.carbpol.2017.07.056〉
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https://hal-clermont-univ.archives-ouvertes.fr/hal-01658292
Contributeur : Guillaume Pierre <>
Soumis le : jeudi 7 décembre 2017 - 15:06:17
Dernière modification le : mardi 13 février 2018 - 16:10:06

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Fatima Benaoun, Cédric Delattre, Zakaria Boual, Alina-Violeta Ursu, Christine Gardarin, et al.. Structural characterization and rheological behavior of a heteroxylan extracted from Plantago notata Lagasca (Plantaginaceae) seeds. Carbohydrate Polymers, Elsevier, 2017, 175, pp.96 - 104. 〈10.1016/j.carbpol.2017.07.056〉. 〈hal-01658292〉

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