Journal of Food Science 2009-08-01

Characterization of gum ghatti (Anogeissus latifolia): a structural and rheological approach.

Lovedeep Kaur, Jaspreet Singh, Harjinder Singh

Index: J. Food Sci. 74(6) , E328-32, (2009)

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Abstract

Gatifolia, a commercial gum ghatti (Anogeissus latifolia) product was studied for its structural, thermal, and rheological characteristics. This study may prove helpful for the use of gum ghatti in a diverse range of food applications. The molecular weight (M(W)) and R(g) (radius of gyration) for gum ghatti were calculated to be approximately 8.94 x 10(7) g/mol and 140 nm, respectively, using high-performance size exclusion chromatography (HPSEC) system combined with multi-angle laser light scattering (MALLS). Gum ghatti solutions exhibited pseudoplastic behavior (as determined by flow experiments), which became more prevalent with increasing concentrations. Gum ghatti also displayed time-dependent shear-thickening behavior and showed negative hysteresis during up-down flow measurements. Under the measurement conditions at the range of frequencies and temperatures studied, the gum did not behave as a typical viscoelastic gel.

Related Compounds

  • Ghatti gum

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