公开(公告)号：US20230151288A1

公开(公告)日：2023-05-18

申请号：US17932160

申请日：2022-09-14

Applicant: Novozymes A/S

Inventor： Anders Rancke Madsen ,  Per Munk Nielsen ,  Hon Seng Yee ,  Hans Christian Holm

IPC: C10L1/18 ,  C12P7/649

CPC classification number: C10L1/1802 ,  C12P7/649 ,  C12Y301/01003 ,  C10L2290/543 ,  C10L2290/544 ,  C10L2200/0476

Abstract: The present invention provides a method for reducing the level of free fatty acids in biodiesel/fatty acid alkyl esters. The method comprises providing a composition comprising fatty acid alkyl esters, free fatty acids and/or a fatty acid feedstock, reacting said free fatty acids and/or said fatty acid feedstock with alcohol in the presence of one or more liquid lipolytic enzymes to produce fatty acid alkyl esters; and/or reacting the free fatty acids and/or said fatty acid feedstock with alcohol in the presence of one or more non-enzymatic catalysts to produce fatty acid alkyl esters.