Work

Optimization of the Preparation of Aqueous Suspensions of Waxy Maize Starch Nanocrystals Using a Response Surface Methodology

Year: 2004

Type: article

Abstract: Response surface methodology was used to investigate the effect of five selected factors on the selective H(2)SO(4) hydrolysis of waxy maize starch granules. These predictors were temperature, acid concentration, starch concentration, hydrolysis duration, and stirring speed. The goal of this study was to optimize the preparation of aqueous suspensions of starch nanocrystals, i.e., to determine the operative conditions leading to the smallest size of insoluble hydrolyzed residue within the shortest time and with the highest yield. Therefore empirical models were elaborated for the hydrolysis yield and the size of the insoluble residues using a central composite face design involving 31 trials. They allowed us to show that it was possible to obtain starch nanocrystals after only 5 days of H(2)SO(4) hydrolysis with a yield of 15 wt % and having the same shape as those obtained from the classical procedure after 40 days of HCl treatment, with a yield of 0.5 wt %.

Source: Biomacromolecules

DOI: 10.1021/bm049914u

Authors: Hélène Angellier, Luc Choisnard, Sonia Molina-Boisseau, Patrick Ozil, Alain Dufresne

Institutions: Centre National de la Recherche Scientifique, Université Joseph Fourier, Centre de Recherches sur les Macromolécules Végétales, Laboratoire d’Electrochimie et de Physico-chimie des Matériaux et des Interfaces, Département de Pharmacochimie Moléculaire

Language: English

Topic: Food composition and properties

Subfield: Nutrition and Dietetics

Field: Nursing

Domain: Health Sciences

SDG: Zero hunger

Open Access status: green

OpenAlex ID: W2096986297

FWCI: 2.813

Cites: 21

Cited by: 472

Related to: 10