Preparation of Pickering emulsions based on soy protein isolate-tannic acid for protecting aroma compounds and their application in beverages

Autor: Kaiwen, Wu, Zeyu, Shi, Chuanxiang, Liu, Chang, Su, SongXing, Zhang, Fengping, Yi
Rok vydání: 2022
Předmět:
Zdroj: Food Chemistry. 390:133182
ISSN: 0308-8146
DOI: 10.1016/j.foodchem.2022.133182
Popis: In the present study, soy protein isolate was modified by tannic acid and used as a stabilizer for Pickering emulsions loaded with aroma compounds. The nanoparticles with tannic acid concentrations above 2 mg/mL were found to show great antioxidant properties. Essential oils, aroma compounds, and flavours can be stabilized by nanoparticles to form Pickering emulsions with a droplet diameter of600 nm. E-nose analysis shows that nanoparticles provide outstanding protective functionalities for the 6 essential oils at 37 °C for 30 days. Further study of limonene and citral indicates that the nanoparticles afford nearly 60% protection against loss with a tannic acid concentration of 10 mg/mL. Furthermore, the nanoparticles also maintain the aroma of the beverages and lengthen the five-day shelf life. Overall, this research provides a sustainable, low-cost, and quickly prepared stabilizer for aroma compounds in foods.
Databáze: OpenAIRE