Dual-process of starch modification: Combining ozone and dry heating treatments to modify cassava starch structure and functionality.

This work evaluated for the first time the effect of dual modification of cassava starch by using ozone (O) and dry heating treatment (DHT). The dual modification was capable to promote fissures on the surface of the starch granule (DHT + O), affected the starch amorphous domains, presented greater degree of starch oxidation (DHT + O) and different profiles of starch molecular size distribution. These modifications resulted in starches with different properties.

Combining ozone and ultrasound technologies to modify maize starch.

In this work, maize starch was modified using ultrasound (US) and ozone (O) treatments, each one alone and also in combination. The starch molecular structure, granule characteristics and properties were evaluated. The US treatment alone did not show influence on the starch physical characteristics.