4. Conclusions
Enzymatic transesterification of triglycerides offers an environmentally more attractive option to the conventional physiochemical process. The key step in enzymatic processes lies in successful immobilization of the enzyme which will allow for its recovery and reuse. In this study the immobilized enzyme transesterification of soybean oil with methanol and ethanol was investigated. Lipase Candida Rugosa was immobilized by entrapment within a activated carbon which was prepared by activation physical. The immobilized lipase so prepared was consistently more active than the free lipase toward the transesterification of palm oil. The immobilized lipase also proved to be stable and lost little activity when was subjected to repeated uses. The flow microcalorimetry is a technical novel for followed of transesterification of oil palm process.