Encapsulation of indole-3-carbinol in Pickering emulsions stabilized by OSA-modified high amylose corn starch: Preparation, characterization and storage stability properties

Wenxiu Zheng; Lin Ren; Wenzhuo Hao; Lei Wang; Changhong Liu; Lei Zheng

doi:10.1016/j.foodchem.2022.132846

Encapsulation of indole-3-carbinol in Pickering emulsions stabilized by OSA-modified high amylose corn starch: Preparation, characterization and storage stability properties

Food Chem. 2022 Aug 30:386:132846. doi: 10.1016/j.foodchem.2022.132846. Epub 2022 Apr 2.

Authors

Wenxiu Zheng¹, Lin Ren¹, Wenzhuo Hao¹, Lei Wang¹, Changhong Liu², Lei Zheng³

Affiliations

¹ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China.
² School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-Process, Ministry of Education, Hefei University of Technology, Hefei 230009, China. Electronic address: changhong22@hfut.edu.cn.
³ School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-Process, Ministry of Education, Hefei University of Technology, Hefei 230009, China. Electronic address: lzheng@hfut.edu.cn.

PMID: 35381538
DOI: 10.1016/j.foodchem.2022.132846

Abstract

The stability of hydrophobic bioactive compound indole-3-carbinol (I3C) is a challenge for application. In this work, Pickering emulsions were prepared to encapsulate I3C. As the emulsifier, high amylose corn starch was pretreated by acid hydrolysis, afterwards modified by different concentrations of octenyl succinic anhydride (OSA), and their emulsions were evaluated. The XRD, SEM and FTIR results indicated the successful modification. ζ-potential, mean droplet size and emulsification index (EI) of the emulsions confirmed that modified starch with a higher degree of substitution (DS) was more effective for enhancing the storage stability. The results of encapsulation efficiency (EE) and retention degree of I3C after 14 d also proved the assumption. Moreover, the Pickering emulsions protected I3C against ultraviolet light and achieved controlled release in vitro. The food-grade Pickering emulsion loading I3C is promising to be used as a nutrient or dietary supplement for food applications.

Keywords: Encapsulation; High amylose corn starch; Indole-3-carbinol; Pickering emulsions; Stability.

MeSH terms

Amylose*
Emulsions / chemistry
Indoles
Starch / chemistry
Zea mays*

Substances

Emulsions
Indoles
Starch
Amylose
indole-3-carbinol