Bioadhesive hydrocaffeic acid modified chitosan colloidal particles using as particulate emulsifiers

Abstract

A kind of bioadhesive hydrocaffeic acid modified chitosan colloidal particles (HCA-CS/TPP CPs) containing synthetic catecholamine groups was prepared via amidation reaction and ionic gelation. The formation process and property of the HCA-CS/TPP CPs were characterized by ultraviolet visible spectrophotometry and Zeta PALS instruments. The prepared HCA-CS/TPP CPs were then used as particulate emulsifier to stabilize Pickering emulsions. The stability of the Pickering emulsion droplet was characterized by digital camera and optical microscope. The results revealed that HCA-CS/TPP CPs exhibited good emulsifying property at a wide pH value range, which will endow the potential application of the Pickering emulsions stabilized by HCA-CS/TPP CPs in various fields.

Graphical Abstract

Keywords:

• Hydrocaffeic acid
• chitosan
• colloidal particles
• Pickering emulsion

Acknowledgments

This work was supported by the National Natural Science Foundation of China under Grant 21504001, 51703001 and 51572004, and the foundation of Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University under Grant JDSJ2015-02.

Disclosure statement

No potential conflict of interest was reported by the authors.