TY - JOUR
T1 - Preparation and characterization of octenylsuccinylated plantain starch
AU - Bello-Flores, Christopher A.
AU - Nuñez-Santiago, Maria C.
AU - Martín-Gonzalez, María F.San
AU - BeMiller, James N.
AU - Bello-Pérez, Luis A.
N1 - Funding Information:
We appreciate the financial support from SIP-IPN , COFAA-IPN , EDI-IPN . CABF also acknowledges the scholarship from CONACYT-Mexico.
PY - 2014/9
Y1 - 2014/9
N2 - 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.
AB - 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.
KW - OSA
KW - Octenylsuccinate ester
KW - Plantain
KW - Starch
UR - http://www.scopus.com/inward/record.url?scp=84904899122&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2014.06.061
DO - 10.1016/j.ijbiomac.2014.06.061
M3 - Artículo
C2 - 25036604
SN - 0141-8130
VL - 70
SP - 334
EP - 339
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -