Bioplastics show promise in search for antibacterial packaging
Bioplastics made from protein sources such as albumin and whey have shown significant antibacterial properties, findings that could eventually lead to their use in plastics used in medical applications such as wound healing dressings, sutures, catheter tubes and drug delivery, according to a recent study by the University of Georgia College of Family and Consumer Sciences.
The bioplastic materials could also be used for food packaging.
Researchers tested three nontraditional bioplastic materials--albumin, whey and soy proteins--as alternatives to conventional petroleum-based plastics that pose risks of contamination.
In particular, albumin, a protein found in egg whites, demonstrated tremendous antibacterial properties when blended with a traditional plasticizer such as glycerol.
"It was found that it had complete inhibition, as in no bacteria would grow on the plastic once applied," said Alex Jones, a doctoral student in the department of textiles, merchandising and interiors. "The bacteria wouldn't be able to live on it."
The study appears in the online version of the Journal of Applied Polymer Science.
One of the researchers' aims is to find ways to reduce the amount of petroleum used in traditional plastic production; another is to find a fully biodegradable bioplastic.
The albumin-glycerol blended bioplastic met both standards, Jones said.
"If you put it in a landfill, this being pure protein, it will break down," he said. "If you put it in soil for a month--at most two months--these plastics will disappear."
The next step in the research involves a deeper analysis of the albumin-based bioplastic's potential for use in the biomedical and food packaging fields.
As noted in the study, 4.5 hospital admissions out of every 100 in the U.S. in 2002 resulted in a hospital-acquired infection. In addition to the risk of contamination in hospitals, food contamination as a result of traditional plastics is a notable risk.
Researchers are encouraged by the antimicrobial properties of albumin-based bioplastics that could potentially reduce these risks through drug elution--loading the bioplastic with either drugs or food preservatives that can kill bacteria or prevent it from spreading.
Study co-authors are Suraj Sharma in the department of textiles, merchandising and interiors and Abhyuday Mandal in the department of statistics, who aided in the statistical analysis and discussion.
The study, "Protein-based bioplastics and their antibacterial potential," is available online at http://onlinelibrary.
Cal Powell | EurekAlert!
Scientist invents way to trigger artificial photosynthesis to clean air
26.04.2017 | University of Central Florida
Researchers invent process to make sustainable rubber, plastics
25.04.2017 | University of Delaware
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
26.04.2017 | Materials Sciences
26.04.2017 | Agricultural and Forestry Science
26.04.2017 | Physics and Astronomy