LeHavreV1, France, Analysis, bibRecord, 001001

Prickly pear nopals pectin from Opuntia ficus-indica physico-chemical study in dilute and semi-dilute solutions

Identifieur interne : 001001 ( France/Analysis ); précédent : 001000; suivant : 001002

Prickly pear nopals pectin from Opuntia ficus-indica physico-chemical study in dilute and semi-dilute solutions

Auteurs : H. Majdoub [Tunisie] ; S. Roudesli [Tunisie] ; L. Picton [France] ; D. Le Cerf [France] ; G. Muller [France] ; M. Grisel [France]

Source :

Carbohydrate Polymers [ 0144-8617 ] ; 2001.

RBID : ISTEX:25C3E4177472CBCB54317CF06DC86A5108F00B03

English descriptors

KwdEn :
- Calcium complexes, Opuntia ficus-indica, Pectin, Polysaccharide, Rheology, SEC/MALLS, Salt effect.

Abstract

The water soluble fraction of peeled prickly pear nopals called native sample (NS) has been characterised mainly by SEC/MALLS analysis. Two main components have been identified: one with high average molar mass (Mw of 13×106gmol−1) called the high weight sample (HWS), the other being a low Mw fraction (LWS). After extensive ultra filtration of NS, isolated HWS and LWS are obtained. From sugar composition analysis, HWS has been found to be a pure polysaccharide, without protein of the pectin family. Moreover, HWS contains a low amount of charged sugar. The conformation of HWS has been discussed using molar masses, gyration radii and viscometry results and LWS has been evidenced as a protein. Rheological behaviour is reported to give an initial understanding of the system's behaviour. The effect of the degree and purification and added monovalent and divalent salts were investigated, The low charge density of the polymer backbone resulted in interesting viscosity stability even in the presence of salts.

Url:

https://api.istex.fr/document/25C3E4177472CBCB54317CF06DC86A5108F00B03/fulltext/pdf

DOI: 10.1016/S0144-8617(00)00284-8

Affiliations:

Links toward previous steps (curation, corpus...)

to stream Istex, to step Corpus: 000D25
to stream Istex, to step Curation: 000D25
to stream Istex, to step Checkpoint: 000850
to stream Main, to step Merge: 001813
to stream Main, to step Curation: 001770
to stream Main, to step Exploration: 001770
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Links to Exploration step

ISTEX:25C3E4177472CBCB54317CF06DC86A5108F00B03

Le document en format XML

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<front><div type="abstract" xml:lang="en">The water soluble fraction of peeled prickly pear nopals called native sample (NS) has been characterised mainly by SEC/MALLS analysis. Two main components have been identified: one with high average molar mass (Mw of 13×106gmol−1) called the high weight sample (HWS), the other being a low Mw fraction (LWS). After extensive ultra filtration of NS, isolated HWS and LWS are obtained. From sugar composition analysis, HWS has been found to be a pure polysaccharide, without protein of the pectin family. Moreover, HWS contains a low amount of charged sugar. The conformation of HWS has been discussed using molar masses, gyration radii and viscometry results and LWS has been evidenced as a protein. Rheological behaviour is reported to give an initial understanding of the system's behaviour. The effect of the degree and purification and added monovalent and divalent salts were investigated, The low charge density of the polymer backbone resulted in interesting viscosity stability even in the presence of salts.</div>
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Prickly pear nopals pectin from Opuntia ficus-indica physico-chemical study in dilute and semi-dilute solutions

Prickly pear nopals pectin from Opuntia ficus-indica physico-chemical study in dilute and semi-dilute solutions

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri