کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1384121 | 982390 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Rheological investigation of synergistic interactions between galactomannans and non-pectic polysaccharide fraction from water soluble yellow mustard mucilage Rheological investigation of synergistic interactions between galactomannans and non-pectic polysaccharide fraction from water soluble yellow mustard mucilage](/preview/png/1384121.png)
Synergistic interactions between galactomannans (GMs) and non-pectic polysaccharides (NPP) from yellow mustard mucilage were investigated in the present study. Structural analysis revealed that NPP was mainly composed of β-1,4-d glucosidic linkage. Four types of GMs, namely fenugreek gum (FG), guar gum (GG), tara gum (TG) and locust bean gum (LBG) with mannose to galactose ratios (M/G) of 1.2, 1.7, 3.0 and 3.7, respectively, were blended with NPP at various ratios. The viscoelastic properties of the mixtures were measured in order to evaluate the effects of GM/NPP blending ratio, M/G ratio, total polysaccharide concentration and pH on the synergistic interactions. Results revealed that at a total polysaccharide concentration of 0.5% (w/w), the highest synergism occurred at the GM/NPP blending ratio of 3/7 for all four types of GMs. The interaction between TG and NPP showed the highest synergy, followed by LBG/NPP, FG/NPP and GG/NPP. At a higher total polysaccharide concentration (1.0% w/w), the mixture of TG and NPP still exhibited the highest synergy, however, the order of synergy between NPP and other GMs was changed as FG/NPP, LBG/NPP and GG/NPP. At the total polysaccharide concentration of 0.5% and GM/NPP blending ratio of 3/7, neutral pH (pH 6.5) showed the strongest synergy compared to that at pH 2.0 and pH 12.0. The mechanism of the synergistic effects could be explained by a combination of segregative association model and junction zone model.
Journal: Carbohydrate Polymers - Volume 78, Issue 1, 4 August 2009, Pages 112–116