Decreasing acid value of fatty acid ethyl ester products using complex enzymes.

ABSTRACT: Recently, enzymatic method has been used to prepare biodiesel using various oils. But the high acid value of the biodiesel product using enzyme as a catalyst has been one issue. In this work, an attempt to reduce the acid value of fatty acid ethyl ester (FAEE) product to satisfy the specified requirement (AV ≤ 0.5 mgKOH/g), a complex enzyme-catalyzed method was used for the ethanolysis of Semen Abutili seed oil (SASO) (AV = 5.5 ± 0.3 mgKOH/g). The effects of various variables (constituents of complex enzyme, type and addition of water removal agent, time, temperature, enzyme addition load, substrate ratio) on the enzymatic reaction were investigated. The optimal reaction conditions were: 1% addition of liquid lipase Eversa^® Transform 2.0% and 0.8% of enzyme dry powder CALB, reac

SUBMITTER: Li Y 

PROVIDER: S-EPMC10882546 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature