Related Experiment Video
Updated: Feb 4, 2026

Preparation of Keratin Hydrolysate from Chicken Feathers and Its Application in Cosmetics
Published on: November 27, 2017
The preparation and physiochemical characterization of rapeseed protein hydrolysate-chitosan composite films
Cheng Zhang1, Zhigao Wang2, Yang Li1
1College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China.
Abstract:
The composite films were prepared by mixing rapeseed protein hydrolysate with chitosan. Upon increasing the degree of hydrolysis, rapeseed protein enhanced its compatibility with chitosan, thus making composite films denser. The tensile strength of films was increased from 16.04 to 23.46 MPa with increasing the degree of hydrolysis from 0% to 12%. Moreover, addition of chitosan enhances the mechanical properties of the rapeseed protein films, the α-helix content in the secondary structure of the rapeseed protein from 15.4% to 25.0%. And it is hydrogen bonding, the main force between two components that contributed to good compatibility, which supported by analyses of Fourier transform infrared spectroscopy and scanning electron microscopy. The results of the antibacterial properties of the composite film with 12% degree of hydrolysis were better compared with the chitosan film. Taken together, our results provide insights for the further application of rapeseed protein in making edible films.
Related Concept Videos
Classifying Matter by Composition
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
Composite Bodies
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...
Composition of Blood
Formed elements constitute the remaining 45% of the blood volume. These...
Composition of Body Fluids
Moments of Inertia for Composite Areas
The second moment of area, also known as the moment of inertia, measures a structure's resistance to bending. It is calculated by...
Composition of Blood Plasma

