Khan_2015_Ultrason.Sonochem_27_522

Reference

Title : Lipase catalysed synthesis of cetyl oleate using ultrasound: Optimisation and kinetic studies - Khan_2015_Ultrason.Sonochem_27_522
Author(s) : Khan NR , Jadhav SV , Rathod VK
Ref : Ultrason Sonochem , 27 :522 , 2015
Abstract :

The current paper exemplifies the application of ultrasound technology to enzymatic synthesis of a cosmetic emollient ester, cetyl oleate. Fermase CALB10000, a commercial Candida antarctica lipase B was used as a catalyst to accomplish the ultrasound supported synthesis. Multiple process parameters like reaction time, temperature, enzyme dose, alcohol to acid molar ratio, ultrasound power, frequency and speed of agitation were optimised. Maximum conversion of approximately 95.96% was discerned at optimum conditions, i.e., 60 degrees C temperature, 5% enzyme dose, 2:1 alcohol:acid ratio, 60W ultrasound power, 25kHz ultrasound frequency, 80% duty cycle and 80rpm speed of agitation after purification steps. It was observed that the reaction reached equilibrium in a short duration of 30min under the optimised conditions. This was considerably lesser than the time required for attaining equilibrium in conventional mechanical stirring method which was over 2h. Bisubstrate kinetic models like random bi-bi, ping pong bi-bi and ordered bi-bi were applied to the experimental data to determine initial rates and other kinetic parameters. Ordered bi-bi model showed the best fit with kinetic parameters, Vmax=0.029M/min/gcatalyst, KA=0.00001M, KB=4.8002M, KiA=0.00014M, KiB=3.7914M & SSE=0.00022 for enzymatic cetyl oleate synthesis under ultrasound irradiation with inhibition by both acid and alcohol at high concentrations.

PubMedSearch : Khan_2015_Ultrason.Sonochem_27_522
PubMedID: 25913878

Related information

Citations formats

Khan NR, Jadhav SV, Rathod VK (2015)
Lipase catalysed synthesis of cetyl oleate using ultrasound: Optimisation and kinetic studies
Ultrason Sonochem 27 :522

Khan NR, Jadhav SV, Rathod VK (2015)
Ultrason Sonochem 27 :522