- 247 views
- 385 downloads
Proteins Derived Bionanocomposites from Poultry By-Product for Food Packaging Applications
-
- Author / Creator
- Zubair, Muhammad
-
Spent hens, a poultry by-product, have little marketplace and their disposal methods are infeasible so to find alternative uses which are environmentally safe is prudent. In this study, proteins were extracted from spent hen by alkali aided extraction method with high recovery (74%) and purity (96%). For the preparation of proteins derived bionancomposite films, the types and ratio of different plasticizers (glycerol, sorbitol, ethylene glycol, poly(ethylene) glycol, butanediol), and chitosan as a cross linker were optimized. Glycerol was found a compatible plasticizer with 3% chitosan. Further, three nanoparticles (bentonite, glycidyl POSS and cellulose nanocrystals) with different concentration were used to evaluate the mechanical strength of the prepared bionancomposite films. The bentonite (5%) with 40% glycerol gave better results among all nanoparticles with mechanical strength of 11.37 MPa. While CNCs (5%) and glycidyl POSS (3%) provided the maximum mechanical strength of 6.86 MPa, and 6.47 MPa respectively. All protein derived bionancomposite films were characterized by the transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and attenuated total reflectance- fourier transform infrared spectroscopy (ATR- FTIR). The results show that a good intercalation and/or exfoliation of the protein biopolymers into clay interlayer galleries was observed leading to improved thermal, mechanical and barrier properties. These observations provided an important basis in the experimental design of high performance bionancomposite films for food packaging applications.
-
- Subjects / Keywords
-
- Graduation date
- Spring 2017
-
- Type of Item
- Thesis
-
- Degree
- Master of Science
-
- License
- This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.