title: Preparation and characterization of octenylsuccinylated plantain starch.
abstract: Plantain starch was esterified with octenylsuccinic anhydride (OSA) at two concentrations (3 and 15% w/w) of OSA. The morphology, granule size distribution, pasting, gelatinization, swelling, and solubility of granules and structural features of the starch polymers were evaluated. Granules of the OSA-modified starches increased in size during cooking more than did the granules of the native starch, and the effect was greater at the higher OSA concentration. Pasting viscosities also increased, but gelatinization and pasting temperatures and enthalpy of gelatinization decreased in the OSA-modified starches. It was concluded that insertion of OS groups effected disorder in the granular structure. Solubility, weight average molar mass, Mw¯, and z-average radius of gyration, RGz, of the amylopectin decreased as the OSA concentration increased, indicating a decrease in molecular size.
authors.affiliation: Instituto Politécnico Nacional, CEPROBI, Yautepec, Morelos, Mexico.
authors.forename: Christopher A
authors.initials: CA
authors.lastname: Bello-Flores
authors.affiliation: Instituto Politécnico Nacional, CEPROBI, Yautepec, Morelos, Mexico.
authors.forename: Maria C
authors.initials: MC
authors.lastname: Nuñez-Santiago
authors.affiliation: Department of Food Science, Purdue University, West Lafayette, IN 47907, USA.
authors.forename: María F
authors.initials: MF
authors.lastname: San Martín-Gonzalez
authors.affiliation: Department of Food Science, Purdue University, West Lafayette, IN 47907, USA; Whistler Center for Carbohydrate Research, Purdue University, West Lafayette, IN 47907, USA.
authors.forename: James N
authors.initials: JN
authors.lastname: BeMiller
authors.affiliation: Instituto Politécnico Nacional, CEPROBI, Yautepec, Morelos, Mexico. Electronic address: labellop@ipn.mx.
authors.forename: Luis A
authors.initials: LA
authors.lastname: Bello-Pérez
mesh_terms: D008970:Molecular Weight; D010316:Particle Size; D010943:Plantago / Q000737:chemistry*; D012995:Solubility; D013213:Starch / Q000737:chemistry*; D013386:Succinates / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D013386:Succinates; C028480:octenyl succinate; D013213:Starch
keywords: OSA; Octenylsuccinate ester; Plantain; Starch