A Georgia State University professor has developed an innovative new way to keep produce and flowers fresh for longer periods of time. Microbiologist George Pierce's method uses a naturally occurring microorganism — no larger than the width of a human hair — to induce enzymes that extend the ripening time of fruits and vegetables, and keeps the blooms of flowers fresh.
The process does not involve genetic engineering or pathogens, but involves microorganisms known to be associated with plants, and are considered to be helpful and beneficial to them.
"These beneficial soil microorganisms serve essentially the same function as eating yogurt as a probiotic to have beneficial organisms living in the gastrointestinal system," Pierce said.
The process works by manipulating the organism's diet so that it will over express certain enzymes and activities that work in the ripening process and keeping the flower blooms fresh. Pierce analogizes this to using diet and exercise to improve the performance of an athlete.
"We change the diet of the organism, and we can change its performance," Pierce said. "It's no different than taking a good athlete and putting them on a diet and exercise regime, and turning him or her into a world-class athlete."
In a very simple sense, climacteric plants — such as apples, bananas, peaches and tomatoes —respond to climactic change, and when they do, they produce increased levels of signal compounds like ethylene. For fruit such as peaches, ethylene causes the peach to ripen, increases aroma chemicals, but unfortunately, makes the peach very fragile.
"If you've seen ripe peaches, they will simply fall apart," Pierce said. "It will lose 90 percent of its ability to resist pressure, which means that if a peach responds normally to ethylene, it is subject to bruising when you ship it."
The enzymes produced from Pierce's new method reduce the response to signal compounds so that it takes a longer period of time for fruits to ripen, doubling the time it takes for ripening.
The catalyst in this process can be distributed through various formulations and configurations. These include being incorporated into shipping boxes, packing materials or used to treat the air of shipping containers. It could be used either with individual fruits or vegetables or for larger, bulk quantities.
This new process could have a big impact on preventing waste, improving the consumption of healthy fruits and vegetables, allowing companies to ship produce longer distances.
"Who hasn't bought fruit or vegetables and then thrown them away?" Pierce said. "Most people will buy more, and consume more, if they know that they could have a better quality of produce for longer." Pierce said.
The method also will allow for the storage of fruits, vegetables and flowers at room temperatures rather than refrigeration, thus helping to save energy, Pierce said.
The U.S. patents related to this invention are owned by the Georgia State University Research Foundation, Inc.
Jeremy Craig | EurekAlert!
Immune Defense Without Collateral Damage
23.01.2017 | Universität Basel
The interactome of infected neural cells reveals new therapeutic targets for Zika
23.01.2017 | D'Or Institute for Research and Education
For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.
According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
23.01.2017 | Health and Medicine
23.01.2017 | Physics and Astronomy
23.01.2017 | Process Engineering