Addition of OA can increase the production of 1,3-propanediol per cell:adding 0.2~0.5 g/L OA,1,3-propanediol concentration/OD is 3.8%~17.5% higher than reference point.
NMR(~1H NMR,~(13)C NMR,DEPT,HSQC,HMBC) methods were used to elucidate the structure of a new immunosuppressant FTY720(2-amino-_1,3 propanediol hydrochloride). The ~1H and ~(13)C chemical shifts of the compound were assigned.
The optimal conditions were:TiO_2 loading amount(mass fraction)10%,catalyst calcination temperature 500℃,mass fraction of catalyst in total feedstock 5.5%,n(acetophenone) ∶n(1,3-propandiol)=1 ∶1.2,toluene(entrainer)20mL and refluxing time 1.5h.
The separation of 1,3-propanediol from the glycerol-based fermentation broth of Klebsiella pneumoniae plays an important role during the microbial production of 1,3-propanediol.
In this paper, the separation of 1,3-propanediol from fermentative broth by a combination of ultrafiltration and alcohol dilution crystallization was investigated.
The experimental results indicated that alcohol precipitation and dilution crystallization was feasible and effective for the separation of 1,3-propanediol from actual fermentation broth.
Besides 1,3-butanediol, other organic compounds such as 1,3-propanediol, ethylene glycol, and citric acid also resulted in an enhancement in catalytic activity, while propanol did not.
The additional identification of 2-(o-methoxyphenoxy)-1,3 propanediol IX as a metabolic product indicates that cleavage of the alkyl-phenyl bond of these dimers or their metabolites also occurs.
2-(o-Methoxyphenoxy)-1,3 propanediol (XII) and 3-hydroxy, 2-(o-methoxy-phenyxy) propionic acid (XIV) were identified as products of the metabolism of (IV).
2-(o-Methoxyphenoxy) ethanol (X) and 2-(o-methoxyphenoxy)-1,3 propanediol (XII) were identified as products of the metabolism of VI and VII respectively indicating α hydroxylation of those substrates with subsequent alkyl-phenyl bond cleavage.
In anaerobic batch cultures of Lactobacillus reuteri, glucose/glycerol cofermentation resulted in production of reuterin (β-hydroxypropionaldehyde) and 1,3 propanediol at the expense of ethanol and lactate.
The first representatives of phospholipids of new types were synthesized on the basis of dipentaerythritol, 2,2'-[oxybis(methylen)]bis(hydroxymethyl))-1,3-propandiol.
PET was synthesized using homogeneous catalysts of 4 wt.% Sb2O3 solution dissolved in glycol[EG, 2,2-bis(4-(2-hydroxyethoxy)phenol)propane(BHPP), neopentyl glycol(NPG), and 1,3-propandiol(PD)].
Die durch Tetrachlorkohlenstoff hervorgerufene Lebersch?digung beeintr?chtigt diese Leistung oder hebt sie auf.3.,3-Propandiol und 1,3-Butandiol bilden unter den gew?hlten Bedingungen weder Glucose noch Glykogen.
In this article we introduce a mild aerobic fermentation process using a strain screened from Klebsiella pneumoniae ATCC 25955, which is insensitive to oxygen, to produce 1,3-PD.