According to a recent report by the British Broadcasting Corporation (BBC), British scientists wrote in the latest issue of the Proceedings of the National Academy of Sciences of the United States that they have modified the cellular mechanism of an E. coli strain so that it can convert absorbed sugars. As a synthetic fuel molecule, the oil produced by this bacteria has almost exactly the same composition and chemical properties as conventional diesel. If this process can be carried out on a large scale, this synthetic fuel is expected to replace fossil fuels. The world is currently vigorously promoting the use of biofuels. The European Union stipulates that by 2020, the use of biofuels made from crops by the transportation sector will reach 10%. However, most of the biodiesel and bioethanol used today are not fully compatible with modern engines and need to be mixed with petroleum before being used in most engines. But this genetically modified E. coli produces fuel different from biofuels. The leader of the study, John Rover, a synthetic biologist at the University of Exeter, explained: “The fuels we manufacture have the long chains and components that modern engines use. We call them fossil fuels for biology. ." To make this fuel, the team used a strain of E. coli (which normally takes sugar and converts it into fat) and then uses synthetic biotechnology to modify its cellular machinery so that it will absorb The sugar is converted to synthetic fuel molecules. As a result, the bacteria has become a "fuel production plant", but at present it can not produce large quantities of alkane fuels. Laffer said that it takes 100 liters of bacteria to make a teaspoon of fuel. Laffer said: “The challenge we are now facing is that we can significantly increase the production of this kind of bacteria-producing fuel before any form of industrial production. We hope to increase production within 3 to 5 years, and then see if the study is It's worth continuing.†The research team is also carrying out other studies and hopes to clarify whether the bacteria can convert other materials such as human or animal waste into fuel. Biofuels are considered a more environmentally friendly alternative to fossil fuels. It is generally believed that biofuels are carbon-neutral because they emit as much carbon dioxide into the air as the plants that make them absorb it. But in fact, the energy consumed for growing and processing the crops needed to make biofuels should also be included because it will also increase the “carbon footprintâ€. According to Gerald Evans, a biofuel consulting expert from the National Non-Food Crops Centre (NNFCC) in the United Kingdom, these problems need to be taken into account when the bacteria produce fuel. This kind of bacteria is also a matter of the ground. Is this method sustainable? Need to consider.
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