Reference : Rheological and physical properties of date juice palm by-product (phoenix dactylifer...
Scientific journals : Article
Life sciences : Food science
http://hdl.handle.net/2268/36960
Rheological and physical properties of date juice palm by-product (phoenix dactylifera L.) and commercial xanthan gums.
English
Ben Salah, Riadh [> > > >]
Besbes, Souhail [> > > >]
Chaari, Kacem [> > > >]
Rhouma, Ali [> > > >]
Attia, Hammadi [> > > >]
Deroanne, Claude [> > > >]
Blecker, Christophe mailto [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
2010
Journal of Texture Studies
Blackwell Publishing
41
2
125-138
Yes (verified by ORBi)
International
0022-4901
1745-4603
[en] Rheological and thermal properties of xanthan produced by Xanthomonas campestris from date by-products (DBP-xanthan) and commercial xanthan were determined. DBP-xanthan gave solutions with lower apparent viscosity than commercial xanthan. However, DBP-xanthan solutions were more stable to temperature changes and ionic strength than commercial xanthan. Gradual increase of storage modulus (G') as function of frequency was observed for the two polysaccharides. On the other hand, loss modulus (G ') remained constant for DBP-xanthan and an increase was observed for commercial xanthan. Granulometric profile indicates that DPB-xanthan particle size was lower than commercial xanthan. Differential scanning calorimetry showed that the melting temperatures (T-m) and enthalpy (Delta H-m) of DBP-xanthan were higher than those of commercial xanthan. These properties of DBP-xanthan are quite rare among xanthan described in the literature and give this new gum great potential for use in the field of bioindustries as thickening and stabilizing agents. PRACTICAL APPLICATIONS Xanthan gum from date by-products (DBP-xanthan) was recently produced in our laboratory. No work has been undertaken to study the rheological properties of this polysaccharide to date. Rheological and some physicals properties were compared to those of commercial xanthan. This could promote industrial use of DBPs as low-cost natural source for xanthan gum production.
http://hdl.handle.net/2268/36960

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