Why do microorganisms breed even in a clean room that should be kept clean?

byluxdarkmatter

Works that are not permitted by contamination of foreign matter and contamination by bacteria are performedClean room, The air is kept clean and high cleanliness is also required for goods brought into the space. In a clean room where humans can not enter without wearing dedicated cleanware, "Somehow microorganisms are discoveredThe mysterious phenomenon that has been confirmed from the past, and the researchers clarified the mechanism.

Team discover how microbes survive clean rooms and contaminate spacecraft
https://phys.org/news/2018-06-team-microbes-survive-rooms-contaminate.html

At NASA 's clean room facilities, various protection measures are implemented to minimize the biological contamination of the spacecraft. I do not know the fact that the living things on the planet are brought into other planets do not know what kind of result will be on the planet, and additionally I will not bring wrong results to the life search mission on the Earth type planet It is because it is not.

However, in reality, various archaebacteria and bacteria are present in the clean room, and among themAcinetobacterMany species of eubacteria are said to have been found in the spacecraft. I am a professor of biological sciences at California State University of Technology PomonaRakesh MogulOur team conducted experiments to clarify the question "why microbial contamination in a clean room can not be stopped?"

The research team is a Mars probeOdysseyWhenPhoenixSeveral Acinetobacter strains were collected from the isolated clean room and analyzed. As a result, it became clear that the Acinetobacter strain can breed most of the strains tested even under conditions where nutrition is extremely limited.

byUCL Mathematical & Physical Sciences

What Acinetobacter used as a breeding nutrient was the detergent used to wash parts of the spacecraft. Acinetobacter biodegrades the ethanol contained in the detergent as a sole carbon source, so it was possible to nutrition, there is a possibility that components of the detergent is nutrient also for other microorganisms.

Mogul said, "With this experiment we were able to bring a certain understanding to the question of why microbes remained in clean rooms such as planetary explorers." The results of this study suggest that it is necessary to take even more stringent cleaning steps in future planetary exploration aircraft cleaning.

byJeremy Brooks