We use various plastic products every day, which bring great convenience to human life and was once considered "one of the greatest creations of the 20th century."
However, with the widespread application of plastics, some negative effects came unexpectedly. The biggest problem is that plastics are not easy to degrade. This was originally the advantage of plastic, but it also made waste plastic a big problem in the world.
In fact, plastic once polluted the entire earth, from Arctic glacier to alpine soil, to the abyss of the sea, and even in the bodies of marine animals , scientists have found discarded plastic products. These plastics that cannot be degraded for hundreds of years will have a long-term impact on the ecosystem.
Since realizing the harm of plastics, people have been trying to consume biodegradable plastics. For example, using raw materials such as corn, cellulose or wood to consume alternatives to plastics, but these products are not as durable as plastic products and their cost remains high. Therefore, the most effective way to deal with plastic problems is to find a way to quickly degrade plastic.
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1 There has been a study that ruminants like cows will consume some natural polymer , so scientists believe that the cattle stomach may have the ability to degrade plastics. Inspired by these discussions, Doris Ribitsch of the University of Natural Resources and Life Sciences in Vienna led a research team to try to crack the secrets of the degradation of polymers in the cattle stomach.
They obtained the gastric juice of the cattle from a slaughterhouse in Aotianshi and extracted microorganisms from it. Subsequently, they cultivated three common polymers in powder and film form with extracted microorganisms, mixtures of microorganisms and gastric juice to study the synthesis efficiency of these microorganisms.
results found that these three common plastic samples can be synthesized by microorganisms in the cattle stomach, and they are more efficient in synthesizing plastic powders. In addition, the mixture of microorganisms and gastric juice can synthesize plastics faster than a single microorganism. This means that the microorganisms in the cattle stomach may have a synergistic effect with some enzymes, so that some polymers can be synthesized quickly.
Libizi believes that after clearly deciphering the microorganisms in the cattle stomach, it may be used to synthesize plastic residues on a large scale to reduce the impact of the ecological environment.
