The combined use of ultrasound and molecular sieves improves the synthesis of ethyl butyrate catalyzed by immobilized Thermomyces lanuginosus lipase

•Ultrasound energy was used as mixing system in the esterification reaction of flavor esters.•Enzyme stability in butyric acid was improved under ultrasound-assisted reaction.•The use of molecular sieves improved the yield 1.5-times.•The combined use of molecular sieves and ultrasound increased the...

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