Home
Resources
Publications
Influence of Amylose Content and Oxidation Level of Potato Starch on Acetylation, Granule Structure and Radicals' Formation

Influence of Amylose Content and Oxidation Level of Potato Starch on Acetylation, Granule Structure and Radicals' Formation

Sławomir Pietrzyk, Teresa Fortuna, Lesław Juszczak, Dorota Gałkowska, Małgorzata Bączkowicz, Maria Łabanowska, Magdalena Kurdziel

Int J Biol Macromol. 2018 Jan;106:57-67.

PMID: 28803974

Abstract:

This study was aimed at determining the effect of the amylose content of starch and oxidation level of potato starch on the structure of starch granules, and susceptibility to chemical modification (acetylation) and subsequent generation of radicals. Potato starch and waxy potato starch were oxidised with sodium hypochlorite applied in doses corresponding to 10, 20, and 30gCl/kg starch, and then acetylated with acetic acid anhydride. The carboxyl, carbonyl, acetyl groups were determined in modified starches. Structural properties of starch granules were evaluated based on gelatinisation, crystallinity, specific surface, intrinsic viscosity, and microphotographs by SEM microscope. The electron paramagnetic resonance (EPR) measurements were carried out to establish starch susceptibility to radical creation upon chemical modification and UV radiation. The amount of formed radicals was treated as a measure of the starch structure stability. The higher amount of amylose and the highest level of oxidation led to strong starch structure destruction and consequently facilitated radical generation. Study results showed also that amylose content as well as the degree of starch oxidation modified consecutive acetylation process. The different effectiveness of the acetylation processes influenced the morphology and structure of starch granules.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP9037223	Amylopectin from potato starch		9037-22-3	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: