Enzymatic glicerolysis of CPO using immobilized lipase for production of diacyl- and monoacyl glycerol

• Main Authors: Tri_Panji, Firda Dimawarnita, Irma Kresnawaty, Susy Saadah, Tri Aminingsih, Mira Miranti
• Format: Article
• Language: English
• Published: indonesian research institute for biotechnology and bioindustry 2019-04-01
• Series: Menara Perkebunan
• Subjects: enzymatic glycerolysis; lipase; dag; mag; enzyme immobilization
• Online Access: http://mp.iribb.org/index.php/mpjurnal/article/view/321
• ISSN: 0125-9318; 1858-3768

CPO is one of the largest plantation commodities that has a lot of derrivative products, among others are DiAcyl Glycerol (DAG) and MonoAcyl Glycerol (MAG). These derivative products have much higher added value because these can serve as healthy oil that able to prevent fat accumulation in human body.The industry of the derivative products is not yet developed in Indonesia, among others are caused by underdeveloped technology of specific lipase enzyme for the production of DAG 1.3- glycerides, the stability and the activity of lipase enzyme need to be improved. This research was conducted with the aim to develop the production technology for 1.3-glycerides, develop the technology forlipase immobilization, develop the technology for CPO glycerolysis with immobilized lipase, and obtain the data composition of glycerolysis products. Lipase-producing fungi were isolated from tempeh, then cultured in a growth medium containing CPO. Lipase was then immobilized on several solid support. Glycerolysis product composition was analyzed by Thin Layer Chromatography. The research results showed that the immobilization of lipases from Rhyzopus oryzae with adsorption techniques can be performed using zeolite, CaCO3, silica gel, and cow bones. The highest activity of immobilized lipase is on CaCO3as much as 99.46%, then on cow bones (91.56%), on zeolite (90.69%), andsilica gel (59.63%). The optimum condition of non immobillized lipase is pH 7 and temperature 30 °C, while immobilized lipase on CaCO3 is at pH 8 and temperature35 ° C. Lipase immobilized on zeolite is at pH 8 and temperature of 30 ° C, on cow bone is at pH 7 and temperature of 30° C, andon silica gel is at pH 8 and temperature of 30° C. The all immobilized lipases are more stable than the free enzyme since the first week of storage. The optimum time of DAG production by immobilized lipase on CaCO3 is 18 hours to produce DAG level of 34.49% of the substrate.