Comparative study on structure and properties of oxidized starch under combined treatments of ultrasound and enzyme.

The present study has developed a novel, eco-friendly method for the modification of potato starch by incorporating ultrasonic pretreatment, enzymatic hydrolysis, and oxidation with hydrogen peroxide. The technical parameters of the modification were optimized through response surface methodology to give optimum conditions. The results showed that the combination of ultrasound and enzyme disrupted the microstructure and crystalline structure of the starch granules, thus allowing for easier penetration of modifying agents and increasing the reactivity of the starch.

A Portable, Label-Free, Reproducible Quartz Crystal Microbalance Immunochip for the Detection of Zearalenone in Food Samples.

This research reports a portable immunochip, based on quartz crystal microbalance (QCM) for label-free, low-cost qualitative detection of zearalenone (ZEN) in food samples. The experimental parameters in the functionalization and working process were evaluated in detail, in order to achieve a high accuracy and sensitivity. Under optimal conditions, the ZEN concentration at an inhibition ratio of 50% and 15% of the proposed QCM immunochip achieved 3.