The study of acetone and isoprene

1. The study of acetone and isoprene According to a new study, a newly discovered bacterium will consume an organic compound, which usually exists in solvents such as paint remover. Scientists said that the discovery of SAR11 bacteria using acetone further proved that when studying the marine carbon cycle and its ability to buffer climate change, all aspects of the marine carbon cycle were not considered, that is, carbon in the atmosphere was absorbed into the ocean. Scientists said that the discovery of SAR11 bacteria using acetone further proved that when studying the marine carbon cycle and its ability to buffer climate change, all aspects of the marine carbon cycle were not considered, that is, carbon in the atmosphere was absorbed into the ocean. The study led by microbiologist Kimberly Halsey of Oregon State University and doctoral student Eric Moore of Oregon State University found that this bacterium not only consumes acetone, but also consumes isoprene, another volatile organic compound. Isoprene, chemically expressed as C5H8, is a key component of natural rubber and a gaseous product of plant metabolism. Isoprene and acetone (C3H6O) are produced by phytoplankton and microalgae, and are abundant on the ocean surface. These gases can enter the atmosphere from them and affect the climate. "Isoprene is usually associated with the famous haze in the Blue Ridge Mountains," said Halsey, an outstanding microbiologist at the School of Science of Oregon State University "It is not clear how acetone is produced biologically, but isoprene and acetone have attracted the interest of atmospheric scientists, because if they escape from the ocean surface, they will react with other compounds in the atmosphere and may form aerosol particles, which may lead to the formation of rain, ice and snow." SAR11 was discovered by Stephen Giovanoni of Oregon State University in 1990. It is the smallest free living cell known and the smallest genome of all independent cells. But bacteria thrive in places where most other cells die - the total weight of SAR11 exceeds the weight of all fish in the ocean - and play a huge role in the carbon cycle through their numbers. Giovanoni, a famous microbiology professor, said that a milliliter of seawater may contain 500000 SAR11 cells, and 25% of the plankton in the sea are SAR11. "SAR11 cells can use isoprene, which further confirms a new theory that some plankton cells use

2. molecules with very low molecular weight, which are ignored by the conventional methods of studying carbon cycle in most cases," said Giovannoni, who participated in the study of acetone and isoprene. "SAR11 has amazing metabolic capacity, can oxidize and produce various volatile organic compounds (VOCs), which can diffuse into the atmosphere." Volatile organic compounds (VOCs) are carbon-containing chemicals with high vapor pressure and low water solubility, some of which may cause adverse effects on human health. Halsey said: "We haven't got a clear understanding of the cycle of acetone and isoprene, but we know that the hidden aspects of the carbon cycle need further study before we fully understand the movement of carbon in the marine biological system The scientists said that the next steps include analyzing the biochemical mechanism behind the volatile organic compound cycle and trying to link the marine microbial process with gas emissions and the transport of chemicals in the atmosphere. "On the ocean surface, the phenomenon of plankton exchanging gas is much more common than previously thought," Halsey said