Exploring the mechanism of high hydrostatic pressure on the chemical activity of starch based on its structure and properties changes

Food Chem. 2023 Aug 30:418:136058. doi: 10.1016/j.foodchem.2023.136058. Epub 2023 Mar 28.

Abstract

High hydrostatic pressure (HHP) could induce changes in the structure and properties of starch. Native corn starch was treated and octenyl succinic anhydride (OSA)-modified corn starch was prepared under different pressures (200, 350, 500 and 600 MPa) at 40℃ for 20 min. The mechanism of HHP on the chemical activity of starch was elucidated by analyzing the relationship between the changes of native starch structure and properties and the quality of OSA-modified starch. Results showed that HHP not only helped water and OSA to penetrate the starch granules but also made the structure of starch granules undergone three changes similar to mechanochemical effects. The starch granules treated by 200 MPa were in the stress stage, and the starch granules treated by 500 MPa were in the transition stage from aggregation to agglomeration. Proper pressure treatment could significantly improve chemical activity of starch and quality of OSA-modified starch.

Keywords: Corn starch; Influence mechanism; Mechanochemical effects; OSA-modified starch.

MeSH terms

  • Hydrostatic Pressure
  • Starch* / chemistry
  • Succinic Anhydrides* / chemistry

Substances

  • Starch
  • Succinic Anhydrides