Ad
related to: dimethyl sulfide and methanethiol free
Search results
Results From The WOW.Com Content Network
Methanomethylovorans hollandica is a species of methylotrophic methanogen able to grow on dimethyl sulfide and methanethiol. It is the type species of its genus. It is obligately anaerobic. [1] It was the first strictly anaerobic archeaon isolated from freshwater sediments in which dimethyl sulfide is the sole source of carbon. It is not a ...
Bacteria in environments both with and without oxygen can also convert methanethiol to dimethyl sulfide (DMS), although most DMS in surface seawater is produced by a separate pathway. [6] Both DMS and methanethiol can be used by certain microbes as substrates for methanogenesis in some anaerobic soils.
Dimethyl sulfide has a characteristic odor commonly described as cabbage-like.It becomes highly disagreeable at even quite low concentrations. Some reports claim that DMS has a low olfactory threshold that varies from 0.02 to 0.1 ppm [clarification needed] between different persons, but it has been suggested that the odor attributed to dimethyl sulfide may in fact be due to disulfides ...
One of its breakdown products is methanethiol (CH 3 SH), which is assimilated by bacteria into protein sulfur. Another volatile breakdown product is dimethyl sulfide (CH 3 SCH 3 ; DMS). There is evidence that DMS in seawater can be produced by cleavage of dissolved (extracellular) DMSP [ 7 ] [ 8 ] by the enzyme DMSP-lyase , although many non ...
However, depending on pH and temperature, methanogenesis has been shown to use carbon from other small organic compounds, such as formic acid (formate), methanol, methylamines, tetramethylammonium, dimethyl sulfide, and methanethiol. The catabolism of the methyl compounds is mediated by methyl transferases to give methyl coenzyme M. [4]
The bond dissociation energies for dimethyl sulfide and dimethyl ether are respectively 73 and 77 kcal/mol (305 and 322 kJ/mol). Sulfides are typically prepared by alkylation of thiols. Alkylating agents include not only alkyl halides, but also epoxides, aziridines, and Michael acceptors. [6] They can also be prepared via the Pummerer ...
In industry, methanethiol is prepared by the reaction of hydrogen sulfide with methanol. This method is employed for the industrial synthesis of methanethiol: CH 3 OH + H 2 S → CH 3 SH + H 2 O. Such reactions are conducted in the presence of acidic catalysts. The other principal route to thiols involves the addition of hydrogen sulfide to ...
Dimethyl-sulfide monooxygenase (EC 1.14.13.131, dimethylsulfide monooxygenase) is an enzyme with systematic name dimethyl sulfide,NADH:oxygen oxidoreductase. [1] This enzyme catalyses the following chemical reaction. dimethyl sulfide + O 2 + NADH + H + methanethiol + formaldehyde + NAD + + H 2 O