Esterification of Sesbania Gum Hydrolysate in Ionic Liquid, Optimization and Characterization of Its Derivatives
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The goal of this work focuses to optimize some parameters in esterification process of sesbania gum hydrolysate by response surface methodology, and to characterize sesbania gum and its derivatives. The experimental results indicated that degree of substitution (DS) of maleate enzymolysis sesbania gum (MESG) could reach a value of 0.768 when an ionic liquid, that is, 1-butyl-3-methylimidazolium chloride, was used as a solvent during the esterification. The obtained regression model could well evaluate the synthesis of MESG. The stretching vibration peak of C–H bonds in MESG was split into two peaks at the wave numbers of 3937 and 2886 cm−1 owing to high DS. The esterification almost changed the crystalline structure of MESG into an amorphous one, whereas the enzymatic hydrolysis less affected the crystalline structure of sesbania gum (SG). The structure of SG granules was severely destroyed by such an esterification with an ionic liquid. The esterification increased the thermal stability of SG. Adding MESG could obviously influence the potato starch pasting characteristics such as peak viscosity, trough viscosity, final viscosity, setback and breakdown.
KeywordsSesbania gum Enzymolysis Esterification Ionic liquid Optimization
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Authors are grateful to individuals who have supported their research.
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Authors declare that they have no conflict of interest.
- 2.Rekaby, M.M.; Elthalouth, I.A.; Rahman, A.A.H.; Elkhabery, E.S.: Technological evaluation of carboxymethyl sesbania galactomannan gum, derivatives as thickeners in reactive printing. BioResources 5, 1517–1529 (2010)Google Scholar
- 5.Liu, H.J.; Qi, R.L.; Gao, L.; Xue, M.; Shen, D.: Grafting modification of sesbania gum and sizing performance. Adv. Mater. Res. 424–425, 1211–1214 (2012)Google Scholar
- 8.Shen, D.; Xue, M.; Zhang, L.; Liu, H.; Gao, L.; Cui, Y.: Preparation and characterization of oxidized sesbania gum and evaluation of its warp sizing performance for fine cotton yarns. Polym. Degrad. Stab. 96, 2181–2818 (2011)Google Scholar
- 13.Fonseca-Florido, H.A.; Vázquez-García, H.G.; Méndez-Montealvo, G.; Basilio-Cortés, U.A.; Navarro-Cortés, R.; Rodríguez-Marín, M.L.; Gómez-Aldapa, C.A.: Effect of acid hydrolysis and OSA esterification of waxy cassava starch on emulsifying properties in Pickering-type emulsions. LWT Food Sci. Technol. 91, 258–264 (2018)CrossRefGoogle Scholar
- 15.Emeje, M.; Kalita, R.; Isimi, C.; Buragohain, A.; Kunle, O.; Ofoefule, S.: Synthesis, physicochemical characterization, and functional properties of an esterified starch from an underutilized source in Nigeria. Afr. J. Food Agric. Nutr. Dev. 12, 7001–7018 (2012)Google Scholar
- 24.Li, H.; Gao, L.; Xue, M.; Shen, D.; Cui, Y.: Grafting modification of sesbania gum and its application to textile sizing. J. Text. Res. 424, 1211–1214 (2012)Google Scholar