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Synthetic gelatin-like material mimics lobster underbelly s stretch and strength | MIT News
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A safer way to deploy bacteria as environmental sensors
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Credits: Image: Christine Daniloff, MIT
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In recent years, scientists have developed many strains of engineered bacteria that can be used as sensors to detect environmental contaminants such as heavy metals. If deployed in the natural environment, these sensors could help scientists track how pollutant levels change over time, over a wide geographic area.
MIT engineers have now devised a way to make this kind of deployment safer, by encasing bacterial sensors in a tough hydrogel shell that prevents them from escaping into the environment and potentially spreading modified genes to other organisms.
“Right now there are a lot of whole-cell biosensors being developed, but applying them in the real world is a challenge because we don’t want any genetically modified organisms to be able to exchange genetic material with wild-type microbes,” says MIT graduate student Tzu-Chieh Tang, one of the lead authors of the new stu
By J.P. LAWRENCE | STARS AND STRIPES Published: February 3, 2021 Kombucha tea has inspired new Army-funded technology that may help troops carry out potentially life-saving tasks, such as detecting chemicals and other pollutants in the environment or purifying water in the field. Engineers at the Massachusetts Institute of Technology and Imperial College London used SCOBY which stands for Symbiotic Culture Of Bacteria and Yeast and is a byproduct of the fermentation process used to make the fizzy, often tart beverage to produce cellulose that can perform numerous functions. By modifying the yeast in the SCOBY, the researchers found they could create materials that glow in the dark, purify water or change color when sensing dangerous substances.
U S Army Turns to Kombucha Tea for Research and Development – MeriTalk
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