Enzymatic synthesis of short-chain flavor esters from natural sources using tailored magnetic biocatalysts

Add time:08/06/2019    Source:sciencedirect.com

Immobilized lipases are excellent biocatalysts for the enzymatic synthesis of short- and medium-chain fatty esters used as food flavor compounds. Herein a new approach for a magnetic core-shell biocatalyst by immobilization of Candida antarctica B lipase is reported, coating single-core magnetic nanoparticles with an organic shell, preferably poly(benzofurane-co-arylacetic acid), followed by the covalent attachment of the enzyme and embedment of the primary biocatalyst in a silica layer. Although covalent and sol-gel immobilization were efficient on their own, their combination can ensure additional operational stability through multi-point linkages. Moreover, silanes holding glycidoxy groups, which can also form covalent linkages, have been successfully used as precursors for the silica coating layer. The structural, magnetic and morphological characteristics were assessed by TEM, SEM-EDX, X-ray photoelectron spectroscopy and vibrating sample magnetometry. The new biocatalysts demonstrated high catalytic efficiency in the solventless synthesis of isoamyl esters of natural carboxylic acids, also in multiple reaction cycles.

We also recommend Trading Suppliers and Manufacturers of 5-AMINO-BENZOFURAN-2-CARBOXYLIC ACID METHYL ESTER (cas 1646-29-3). Pls Click Website Link as below: cas 1646-29-3 suppliers

Prev:Electrochemical synthesis of 5,6-dihydroxy-2-methyl-1-benzofuran-3-carboxylate derivatives
Next:GC/CI/MS studies of aldicarb and butocarboxime, two isomeric oxime carbamates)