Ultrasonic treatment regulates the properties of gelatin emulsion to obtain high-quality gelatin film

Xin Li; Xiao-Mei Sha; Hong-Shun Yang; Zhong-Yang Ren; Zong-Cai Tu

doi:10.1016/j.fochx.2023.100673

Ultrasonic treatment regulates the properties of gelatin emulsion to obtain high-quality gelatin film

Food Chem X. 2023 Apr 3:18:100673. doi: 10.1016/j.fochx.2023.100673. eCollection 2023 Jun 30.

Authors

Xin Li^{1

2}, Xiao-Mei Sha², Hong-Shun Yang³, Zhong-Yang Ren⁴, Zong-Cai Tu²

Affiliations

¹ School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China.
² National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
³ Department of Food Science & Technology, National University of Singapore, Singapore 117542, Singapore.
⁴ College of Ocean Food and Biological Engineering, Jimei University, 361000, China.

Abstract

Gelatin emulsion was an important process for preparing gelatin films. A gelatin film with water resistance and ductility could be prepared using gelatin emulsion, whereas the prepared gelatin film has several defects (e.g., low tensile strength and poor thermal stability). This study aimed to modify gelatin emulsion through ultrasonic treatment, then gelatin film was prepared by the modified gelatin emulsion. The results showed that: under the condition of ultrasonic treatment for 12 min at 400 w, zeta potential and viscosity of gelatin emulsion were the largest; thickness, water vapor permeability (WVP) and water solubility (WS) of corresponding gelatin film were the lowest, and the tensile strength (TS), elongation at break (EAB), denaturation temperature (T_m) and enthalpy value (ΔH) of corresponding gelatin film were the highest. The above result suggested that ultrasonic treatment can be used to prepare a gelatin film with better quality by regulating the properties of gelatin emulsion, and a certain correlation was found between the properties of gelatin emulsion and the properties of gelatin film.

Keywords: Correlation analysis; Gelatin emulsion; Gelatin film; Regulation; Ultrasonic treatment.