|Title||Comparison of the sustainability metrics of the petrochemical and biomass-based routes to methionine|
|Author(s)||Sanders, J.P.M.; Sheldon, R.A.|
|Source||Catalysis today 239 (2015). - ISSN 0920-5861 - p. 44 - 49.|
|Publication type||Refereed Article in a scientific journal|
|Keyword(s)||Biomass - Economic evaluation - Green metrics - Land use - Methionine|
Sustainability metrics, based on material efficiency, energy input, land use and costs, of three processesfor the manufacture of methionine are compared. The petrochemical process affords dl-methionine whilethe two biomass-based routes afford the l-enantiomer. From the point of view of the major application,in animal feed, either can be used. The first bio-based route, developed by CJ Cheil-Jedang, involves theproduction of an l-methionine precursor, O-succinyl homoserine by fermentation followed by enzymaticreaction of the latter with methyl mercaptan.The second bio-based route involves the isolation of l-methionine from grass protein. Based on thisconcise evaluation of the sustainability metrics we conclude that both bio-based processe are potentiallyattractive sustainable routes for the manufacture of methionine.