For the first time, methyl acetate (MeOAc), which can be formed from carbonylation of methanol with CO, was demonstrated to be an alternative carbon source for the cell growth of Corynebacterium glutamicum as a model microbial cell factory.
Analogously we suppose that, due to the positive inductive effect of three methyl groups, propionate is a weaker Lewis acid than acetate, which in turn is weaker than formate, figure 3a.
One of the primary flavor esters found in food fermentations is isoamyl acetate, which comes from the reaction of 3-methyl-1-butanol and acetyl-CoA.
Isoamyl acetate, which is the chemical that reminds people of Circus Peanuts".
However, the minimum boiling azeotrope, which has methyl acetate and methanol (0.82 and 0.18 wt fractions) as its constituents is being removed continuously, and the conversion is limited by methanol available for reaction when equimolar quantities of acetic acid and methanol are employed.
This is analysed in detail in this work using as a model system the synthesis of methyl acetate on sulphonic resins, for which extensive experimental data on the reaction and equilibrium parameters as a function of the acid capacity of the resins are available.
The peak response magnitude to methyl acetate was 0.67 (Fig. 3), which is approximately similar to the peak response index to propyl acetate of 0.68 (Fig. 1A), but lower than the peak response index to ethyl butyrate of 0.91 (Fig. 1B).
This work explores an alternative to convert methyl acetate back to acetic acid (raw materials of PVA plant), methyl acetate (MeAc) hydrolysis.
This bacterium formed methyl acetate from the latter with a BVMO, which was subsequently hydrolyzed to methanol and acetate.
