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Background 2: Abstract: Background 2,5-Furandicarboxylic acid is a renewable building block for the production of polyfurandicarboxylates, which are biodegradable polyesters that are expected to substitute classical polyesters derived from fossil resources. 5-methoxymethylfurfural and its partially deoxidized derivatives, yielding 2,5-furfural and its partially oxidized derivatives, as well as methanol as a by-product, are listed in the Aryl-alcohol oxidase and unspecific peroxygenase act, as well as methanol as a by-product. Methanol oxidase reacts well with the methanol that has been developed for in situ manufacturing H2O2 that, as well as that produced by aryl-alcohol oxidase, fuels the peroxygenase reactions. The addition of some exogenous methanol to the reaction improves the yield, resulting in a nearly complete conversion of 5-methoxymethylfurfural into 2,5-furandicarboxylic acid. Conclusions The synergistic action of aryl-alcohol oxidase and unspecific peroxygenase in the presence of 5-methoxymethylfurfural and O2 is sufficient for the manufacture of 2,5-furandicarboxylic acid. The addition of methanol oxidase to the enzymatic cascade raises the 2,5-furandicarboxylic acid yields by increasing the 2,5-furandicarboxylic acid yields by oxidizing a by-product reaction to fuel the peroxygenase reactions.
Source link: https://doi.org/10.1186/s13068-018-1091-2
The majority of the chemical methods used for FDCA manufacturing require harsh environments, so an environmentally friendly alternative, an enzymatic conversion process can be used. The effect of substrate concentration was only assessed in AO, where 20 mM HMF produced 19. 5% DFF and 5 mM HMF in 39. 9% DFF, with a K m value of 14 mM. Conclusions Our research sought to find out how bio-based HMF converts to FDCA by various enzymes. We'll be able to better optimize this process and achieve the highest product yields in the future by knowing the reaction pathway as well as substrate specificity and the effect of substrate concentration.
Source link: https://doi.org/10.1186/s13068-020-01705-z
Abstract in the HOAc buffer that used a Pd-40-catalyzed bromine acid synthesis with a yield of 57 percent was achieved for the first time. The involved Xantphosu205modified Pdu2010catalyst and the buffer solution, according to Experiments, play important supporting roles for each individual's reaction, although Br2 had a negative effect on the second bromination step, although CO was deleterious for the first bromination step.
Source link: https://doi.org/10.1002/open.202100301
We've created an eco-friendly way to produce a renewable dicarboxylic acid 2,5-furandicarboxylic acid from biomass-based 5-hydroxymethylfrufural synthesis. We optimized our published method, which used phosphate buffer and Fe 3 as the stabilizer to increase the potassium ferrate's stability, then created a purified FDCA under mild conditions, which was then converted into a purified FDCA in high yield under mild conditions. The experimental findings revealed that the furan-aromatic polyesters manufactured from biomass-based HMF are viable alternatives to the petrochemical benzene-aromatic polyesters, as low-melting heat bondable fabric, high-barrier packaging material, and engineering application fabric.
Source link: https://doi.org/10.3390/polym11020197
By cutinase 1 from Thermobifida cellulosilytica, a series of copolyesters based on furanic acid and sulfonated isophthalic acid with various polyols were synthetized and their susceptibility to enzymatic hydrolysis was investigated. The hydrolytic stability of the alkyl diol unit increased with increasing chain length, although it was still higher for the ether diol units. Thc_Cut1 was able to hydrolyze all of the copolyesters containing alkyl diols ranging from two to eight carbon chain lengths with a value of 13. 6 mM FDCA, after 72 h of incubation at 50°C. When replacing an alkyl diol with ether diols, a fivefold rise in FDCA for triethylene glycol was recorded, as compared to 1,8-octanediol.
Source link: https://doi.org/10.3390/polym9090403
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