Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
605919 | Food Hydrocolloids | 2006 | 8 Pages |
Abstract
Acetate, succinate and octenylsuccinate derivatives of galactomannans were prepared in anhydrous reaction conditions carried out at slightly elevated temperature (40–60 °C) using solid NaHCO3 as a mild base catalyst. Prior surface wetting of the reactants with ∼5% absolute ethyl alcohol gave derivatives with a higher degree of substitution, although it decreased the slurry viscosity. Use of NaHCO3 significantly minimized high pH-induced degradative reactions, and its quantitative removal later was easily accomplished by repeated washings with aqueous ethyl alcohol. FT-IR, 13C-NMR, HPSEC and SEM data provided additional structural information. These derivatives are useful as functional food ingredients.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
M.R. Savitha Prashanth, K.S. Parvathy, N.S. Susheelamma, K.V. Harish Prashanth, R.N. Tharanathan, A. Cha, G. Anilkumar,