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LED turns vegetables into medicinal plants

14.07.2018

LEDs allow you to change the idea of ​​​​growing vegetables and other plants.

Nichia, Japan's largest LED manufacturer, has set up a laboratory facility in Shanghai to investigate how different LED light sources can change the chemical composition of plants. The task of researchers is to learn how to give vegetables a healing effect with the help of specially selected lighting.

More precisely, to enhance the corresponding potential already inherent in plants. The fact is that the properties of vegetables can be influenced by changing the spectrum of LEDs. For example, Nichia is already able to grow low-sugar vegetables, which could be beneficial for diabetic patients.

Nichia partners with local supermarkets and supplies some products to the Netherlands.

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Bee moth against polyethylene 25.12.2017

Scientists from the Cantabrian Institute of Biomedicine and Biotechnology, Spain have found that the larvae of the moth bee (Galleria mellonella) are able to efficiently degrade polyethylene, which accounts for 40% of all plastic produced. When examining the damaged polyethylene film during the experiment, the group found traces of ethylene glycol, a degradation product of polyethylene, which confirms the fact of biodegradation.

Mankind annually creates more than 300 million tons of plastics. About half of them end up in landfills, and up to 12 million tons in the ocean. There is no reliable way to get rid of them yet, but the results of a new study suggest that such a method lies in the stomachs of some hungry larvae.

To test the ability of Galleria mellonella, scientists placed 100 of these larvae on a regular plastic shopping bag. For 12 hours, these larvae ate about 12 mg of polyethylene, i.e., about 3% of its mass. To make sure that chewing on the polyethylene was not the only cause of its destruction, the scientists crushed several larvae to a paste and applied this paste to the plastic film. In 14 hours, the film lost 13% of its weight, presumably as a result of the destruction of polyethylene by enzymes from the stomachs of the larvae.

According to the authors of the work, the ability of the larvae to destroy plastic is due to the same reason as their ability to destroy their main food product - beeswax. "Wax is a complex mixture of molecules, but the main type of bond in these molecules is the same as in polyethylene, this is a carbon-carbon bond. And in the process of evolution, the larvae have developed the ability to break it down," she said.

In itself, the development of the body's ability to destroy polyethylene is quite natural, and there is nothing surprising in this, but the speed of this biodegradation is admirable. The next step should be to identify the cause of this biodegradation. If this is an enzyme, then what produces it is the larvae themselves, or the microorganisms in their intestines. One way or another, scientists expressed the hope that their discovery will help find a way to use this enzyme to break down plastics lying in landfills and scattered in the oceans.

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