Structural characterization and rheological behavior of a heteroxylan extracted from Plantago notata Lagasca (Plantaginaceae) seeds.
Carbohydr Polym
; 175: 96-104, 2017 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-28917930
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 ß-(1,3)-d-Xylp and ß-(1,4)-d-Xylp highly branched, through (O)-2 and (O)-3 positions of ß-(1,4)-d-Xylp by various side chains and terminal monosaccharides such as α-l-Araf-(1,3)-ß-d-Xylp, ß-d-Xylp-(1,2)-ß-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 2.3×106g/mol and a pseudoplastic behavior.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Plantago
/
Sementes
/
Xilanos
Idioma:
En
Revista:
Carbohydr Polym
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Argélia