propanediols การใช้

• Some bacteria can use 1, 2-propanediol as a carbon source.
• This method has been used for 1, 3-propanediol from ethylene oxide.
• They include 1, 2-propanediol, acetic acid, triethanolamine and lignosulfonates.
• Higher concentrations of acetic acid are produced rather than 1, 2-propanediol.
• 1, 3-Propanediol can be formulated into a variety of industrial products including aliphatic polyesters, copolyesters.
• Lactic acid is converted to two most common products which are acetic acid and 1, 2-propanediol.
• The two monomer units used in producing this polymer are : 1, 3-propanediol and terephthalic acid or dimethyl terephthalate.
• Subsequently, transmission electron micrographs of " Salmonella " cells grown on propanediol or ethanolamine showed the presence of polyhedral bodies similar to carboxysomes.
• In the PDU microcompartment, mutagenesis experiments have shown that the pore of the PduA shell protein is the route for entry of the propanediol substrate.
• DuPont subsequently commercialized a biological process for making 1, 3-propanediol from corn syrup, imparting significant renewable content on the corresponding Sorona polyester carpet fibers.
• PDU BMCs in " Salmonella enterica " are induced by the presence of propanediol or glycerol under anaerobic conditions, and only propanediol under aerobic conditions.
• PDU BMCs in " Salmonella enterica " are induced by the presence of propanediol or glycerol under anaerobic conditions, and only propanediol under aerobic conditions.
• In 2004, it established a joint venture with DuPont to manufacture a renewable 1, 3-Propanediol that can be used to make Sorona ( a substitute for nylon ).
• Sorona is a co-polymer of 1, 3-propanediol ( obtained by fermentation ) and petroleum-derived terephthalic acid ( TPA ) or dimethyl terephthalate ( DMT ).
• Similar structures are known to harbor the coenzyme B12-containing glycerol dehydratase, the key enzyme of glycerol fermentation to 1, 3-propanediol, in some Enterobacteriaceae ( e . g.
• Although the carboxysome, propanediol utilizing ( PDU ), and ethanolamine utilizing ( EUT ) BMCs encapsulate different enzymes and therefore have different functions, the genes encoding for the shell proteins are very similar.
• But then genes coding for proteins homologous to those of the carboxysome shell were identified in the " pdu " ( propanediol utilization ) and " eut " ( ethanolamine utilization ) operons.
• 1, 3-propanediol is reacting with dibutyltin oxide to 2, 2-dibutyl-1, 3, 2-dioxastannane and carbon disulfide to the cyclic sulfite of 1, 3-propanediol.
• 1, 3-propanediol is reacting with dibutyltin oxide to 2, 2-dibutyl-1, 3, 2-dioxastannane and carbon disulfide to the cyclic sulfite of 1, 3-propanediol.
• This is an example of bioengineering that likewise provides evidence in support of the selfish operon hypothesis . 1, 2-propanediol is dehydrated to propionaldehyde by propanediol dehydratase, which requires vitamin B12 as a cofactor.