Effect of molecular weight on the synergistic interaction of xanthan/galactomannan

Makoto Takemasa; Reika Matsuda; Katsuyoshi Nishinari; Rheo Takahashi

Effect of molecular weight on the synergistic interaction of xanthan/galactomannan

Makoto Takemasa^*, Reika Matsuda, Katsuyoshi Nishinari, Rheo Takahashi

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Effect of molar mass of two polysaccharides, xanthan and galactomannan on the synergistic interaction of them was investigated by dynamic shear modulus and differential scanning calorimetry (DSC). Totally 8 samples were prepared. All the combinations of three xanthan whose molar mass is ranging from 2.5×10⁵ to 7.5×10⁶ and five galactomannan (locust bean gum) ranging from 2.8×10³ to 5.8×10 ⁵ were measured. The transition temperatures decreases with decreasing molar mass of locust bean gum, but are almost independent on that of xanthan. For the lowest molar mass locust bean gum, no DSC peak and no large increase of shear modulus were found, indicating no synergistic interaction. These effects were discussed based on the commonly accepted model of the crosslinking mechanism for this system, the binding site of the locust bean gum is consecutive unsubstituted mannose backbone.

Original language	English
Title of host publication	Polymer Preprints, Japan
Pages	870
Number of pages	1
Volume	54
Edition	1
Publication status	Published - 2005
Externally published	Yes
Event	54th SPSJ Annual Meeting 2005 - Yokohama Duration: 2005 May 25 → 2005 May 27

Other

Other	54th SPSJ Annual Meeting 2005
City	Yokohama
Period	05/5/25 → 05/5/27

Keywords

DSC
Galactomannan
Molecular weight
Rheology
Synergistic interaction
Xanthan

ASJC Scopus subject areas

Engineering(all)

Cite this

@inproceedings{1337e89653bd4024bd3191b29f6ebc71,

title = "Effect of molecular weight on the synergistic interaction of xanthan/galactomannan",

abstract = "Effect of molar mass of two polysaccharides, xanthan and galactomannan on the synergistic interaction of them was investigated by dynamic shear modulus and differential scanning calorimetry (DSC). Totally 8 samples were prepared. All the combinations of three xanthan whose molar mass is ranging from 2.5×105 to 7.5×106 and five galactomannan (locust bean gum) ranging from 2.8×103 to 5.8×10 5 were measured. The transition temperatures decreases with decreasing molar mass of locust bean gum, but are almost independent on that of xanthan. For the lowest molar mass locust bean gum, no DSC peak and no large increase of shear modulus were found, indicating no synergistic interaction. These effects were discussed based on the commonly accepted model of the crosslinking mechanism for this system, the binding site of the locust bean gum is consecutive unsubstituted mannose backbone.",

keywords = "DSC, Galactomannan, Molecular weight, Rheology, Synergistic interaction, Xanthan",

author = "Makoto Takemasa and Reika Matsuda and Katsuyoshi Nishinari and Rheo Takahashi",

year = "2005",

language = "English",

volume = "54",

pages = "870",

booktitle = "Polymer Preprints, Japan",

edition = "1",

note = "54th SPSJ Annual Meeting 2005 ; Conference date: 25-05-2005 Through 27-05-2005",

}

TY - GEN

T1 - Effect of molecular weight on the synergistic interaction of xanthan/galactomannan

AU - Takemasa, Makoto

AU - Matsuda, Reika

AU - Nishinari, Katsuyoshi

AU - Takahashi, Rheo

PY - 2005

Y1 - 2005

N2 - Effect of molar mass of two polysaccharides, xanthan and galactomannan on the synergistic interaction of them was investigated by dynamic shear modulus and differential scanning calorimetry (DSC). Totally 8 samples were prepared. All the combinations of three xanthan whose molar mass is ranging from 2.5×105 to 7.5×106 and five galactomannan (locust bean gum) ranging from 2.8×103 to 5.8×10 5 were measured. The transition temperatures decreases with decreasing molar mass of locust bean gum, but are almost independent on that of xanthan. For the lowest molar mass locust bean gum, no DSC peak and no large increase of shear modulus were found, indicating no synergistic interaction. These effects were discussed based on the commonly accepted model of the crosslinking mechanism for this system, the binding site of the locust bean gum is consecutive unsubstituted mannose backbone.

AB - Effect of molar mass of two polysaccharides, xanthan and galactomannan on the synergistic interaction of them was investigated by dynamic shear modulus and differential scanning calorimetry (DSC). Totally 8 samples were prepared. All the combinations of three xanthan whose molar mass is ranging from 2.5×105 to 7.5×106 and five galactomannan (locust bean gum) ranging from 2.8×103 to 5.8×10 5 were measured. The transition temperatures decreases with decreasing molar mass of locust bean gum, but are almost independent on that of xanthan. For the lowest molar mass locust bean gum, no DSC peak and no large increase of shear modulus were found, indicating no synergistic interaction. These effects were discussed based on the commonly accepted model of the crosslinking mechanism for this system, the binding site of the locust bean gum is consecutive unsubstituted mannose backbone.

KW - DSC

KW - Galactomannan

KW - Molecular weight

KW - Rheology

KW - Synergistic interaction

KW - Xanthan

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M3 - Conference contribution

AN - SCOPUS:33645568475

VL - 54

SP - 870

BT - Polymer Preprints, Japan

T2 - 54th SPSJ Annual Meeting 2005

Y2 - 25 May 2005 through 27 May 2005

ER -

Effect of molecular weight on the synergistic interaction of xanthan/galactomannan

Abstract

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Keywords

ASJC Scopus subject areas

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