Abstract
The present study aimed to characterize the surface properties of Nile tilapia (Oreochromis niloticus) fillets and evaluate the wettability properties of edible coatings based on chitosan and gelatin from fish scales on its surface using varying concentrations of biopolymers and plasticizer. The surface of Nile tilapia fillet was characterized as low-energy with a surface tension of 63.80 mN/m, whose polar and dispersive components were 49.98 mN/m and 13.82 mN/m, respectively. From the 32 experimental design it was observed that the increase of the chitosan concentration leads to higher values of the adhesion coefficient but results on a decrease of the spreading coefficient. For gelatin coatings, the biopolymer concentration was found to both decrease the adhesion and spreading coefficients. However, the use of higher plasticizer concentrations decreased the values of adhesion and spreading coefficients for the chitosan coatings while increases the values for the gelatin coatings. Preliminary characterization revealed that the best experimental spreadability coefficients (Ws) were −13.565 mN/m for the chitosan coatings and −10.762 mN/m for gelatin coatings.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
