1.Use hemoglobin to make bioplastics
Teagasc (Agricultural and Food Development Agency) researchers Dr. Anne Maria Mullen and Dr. Carlos Alvarez have developed a method of using hemoglobin in the blood to produce bioplastics.
This invention can use hemoglobin as the main production raw material to produce biodegradable food-grade bioplastics, which can be used as packaging materials for food applications. We have an ongoing project aimed at improving the mechanical properties of hemoglobin films. In addition, we are studying how to expand this innovative film production process to transfer to the Irish food industry. "
2.Use crayfish to make bioplastics
In addition to using hemoglobin to make packaging materials, some companies have also extracted chitosan from crayfish to make bioplastics.
broken the shell of caryfish then ground and acid-base solution is added to promote separation of protein and minerals, thereby obtaining chitosan nanofibers.
Then add biological vinegar and stir the resulting solution. Pour the liquid plastic into the model plate and condense it with a freezing device. After the liquid plastic is completely condensed, it becomes a transparent plastic sheet. Finally, the two plastic sheets are glued together with an adhesive to do Become an environmentally friendly plastic bag.
3.Use mango leaves and nano cellulose to make cling film
The “Supercritical Fluid Process Analysis and Design” research group of the University of Cadiz (Spain) and the “Biopol4fun” research group of the University of Aveiro (Portugal) jointly developed a system made of nanocellulose and mango leaf extract. Compared with non-functionalized plastics, the finished functionalized plastics can preserve food for a longer period of time.
Researchers collected mango leaves from the Spanish Mara heating belt and the pruning residues of the Mediterranean Horticultural Research Institute farm, combined the mango leaf extract with the nanocellulose obtained after chemical and enzymatic treatment of waste products from the paper industry, and impregnated it with a supercritical solution Technology forms this new type of film.
The research team tested the antibacterial properties of this biologically active film against common pathogens in two foods: Staphylococcus aureus and Escherichia coli through in vitro experiments. The test results show that the mango polyphenols contained in the bioactive film have antibacterial effects, which can inhibit the spread of pathogenic bacteria and prevent food spoilage. In addition, the mango extract in the film also helps to form a UV "barrier", reducing the incidence of UV light and delaying food spoilage.
4.Use avocado to make bioplastics
The Biofase company from Mexico (a major country producing avocados) made various types of biodegradable tableware through special processes from the peels and pits of avocado processing in the country, which were exported to the United Kingdom and other European and American countries, which not only alleviated environmental pollution, but also realized Resource utilization.
