The viability and biological activity of Absidia coerulea in compressed or supercritical CO2 and C2H4 were studied. The specific activity of Absidia coerulea in 7.5MPa CO2 and C2H4 at 306K can reach to 23% and 75% r...The viability and biological activity of Absidia coerulea in compressed or supercritical CO2 and C2H4 were studied. The specific activity of Absidia coerulea in 7.5MPa CO2 and C2H4 at 306K can reach to 23% and 75% respectively, leading to the feasibility of using supercritical C2H4 as an alternative to the organic solvent in the hydroxylation of Reichsterin’s substance acetate.展开更多
The influence of compression and decompression rates of carbon dioxide on the physiology of Absidia coerufea and Saccharomyces cerevisiae was investigated. Besides parameters such as pressure, temperature, exposure ti...The influence of compression and decompression rates of carbon dioxide on the physiology of Absidia coerufea and Saccharomyces cerevisiae was investigated. Besides parameters such as pressure, temperature, exposure time, water content, and initial pH, the influence of either compression or decompression rate on the biological behavior of microorganisms was quite essential. For both microorganisms studied, an optimal rate for either compression or decompression process exists due to the integrated effect of pressure, exposure time as well as compression or decompression speed. The decompression rate has no significant effect on cell's viability after 180 min exposure in compressed CO_2 because almost all the microorganisms were died before decompression.展开更多
基金support from the NNSFC(No.20076033,20176041)is greatly acknowledged
文摘The viability and biological activity of Absidia coerulea in compressed or supercritical CO2 and C2H4 were studied. The specific activity of Absidia coerulea in 7.5MPa CO2 and C2H4 at 306K can reach to 23% and 75% respectively, leading to the feasibility of using supercritical C2H4 as an alternative to the organic solvent in the hydroxylation of Reichsterin’s substance acetate.
基金Supported by the National Natural Science Foundation of China (No.20476076).
文摘The influence of compression and decompression rates of carbon dioxide on the physiology of Absidia coerufea and Saccharomyces cerevisiae was investigated. Besides parameters such as pressure, temperature, exposure time, water content, and initial pH, the influence of either compression or decompression rate on the biological behavior of microorganisms was quite essential. For both microorganisms studied, an optimal rate for either compression or decompression process exists due to the integrated effect of pressure, exposure time as well as compression or decompression speed. The decompression rate has no significant effect on cell's viability after 180 min exposure in compressed CO_2 because almost all the microorganisms were died before decompression.
