Journal article
Cross-Linked Amylose Bio-Plastic: A Transgenic-Based Compostable Plastic Alternative
Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark;1
Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark;2
Department of Chemical Science, University of Naples, 80126 Napoli, Italy;3
Department of Food Science, University of Copenhagen, 1958 Frederiksberg, Denmark;4
Department of Molecular Biology and Genetics, Aarhus University, 4200 Slagelse, Denmark;5
College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China;6
Center for Bioresources and Biorefinery, Danish Technological Institute, Gregersenvej 7, 2630 Taatsrup, Denmark;7
Bio-plastics and bio-materials are composed of natural or biomass derived polymers, offering solutions to solve immediate environmental issues. Polysaccharide-based bio-plastics represent important alternatives to conventional plastic because of their intrinsic biodegradable nature. Amylose-only (AO), an engineered barley starch with 99% amylose, was tested to produce cross-linked all-natural bioplastic using normal barley starch as a control.
Glycerol was used as plasticizer and citrate cross-linking was used to improve the mechanical properties of cross-linked AO starch extrudates. Extrusion converted the control starch from A-type to Vh- and B-type crystals, showing a complete melting of the starch crystals in the raw starch granules. The cross-linked AO and control starch specimens displayed an additional wide-angle diffraction reflection.
Phospholipids complexed with Vh-type single helices constituted an integrated part of the AO starch specimens. Gas permeability tests of selected starch-based prototypes demonstrated properties comparable to that of commercial Mater-Bi© plastic. The cross-linked AO prototypes had composting characteristics not different from the control, indicating that the modified starch behaves the same as normal starch.
The data shows the feasibility of producing all-natural bioplastic using designer starch as raw material.
| Language: | Undetermined |
|---|---|
| Publisher: | MDPI |
| Year: | 2017 |
| Pages: | 2075 |
| ISSN: | 14220067 and 16616596 |
| Types: | Journal article |
| DOI: | 10.3390/ijms18102075 |
| ORCIDs: | Hooshmand, Kourosh , Kirkensgaard, Jacob J. K. , Mortensen, Kell , Giosafatto, Concetta Valeria L. , 0000-0002-4686-5531 , 0000-0003-0371-0043 and 0000-0001-6476-9546 |
Amylose Biodegradable Plastics Biology (General) Chemistry Citric Acid Cross-Linking Reagents Crystallization Glycerol Hordeum Permeability Phase Transition Plants, Genetically Modified Plasticizers QD1-999 QH301-705.5 Starch amylose amylose permeability bioplastic citric acid cross-link assay cross-linker starch
