Abstract:
The study of lipase enzyme has received vast attention because of its significance for
efficient bioconversion of lipase residues into useful products in industries. At the
moment, there are very few studies focusing on lipid-degrading enzymatic activities
of marine bacteria. In this study, the ability to produce this enzyme by marine bacteria
MDO 18, which was isolated from the mucus of Aeropora cervicornis coral at Bi dong
Island, Terengganu was investigated was confirmed the identification of the bacteria
by several biochemical tests based on their morphological and phenotypic
characteristics were carried out. The results suggested that the bacteria is Citrobacter
sp. Three different inedia have been tested to determine the best culture medium for
induction: Nutrient Broth in distilled water; Nutrient Broth in sea water and ZoBell's
Modified Broth medium. ZoBell's Modified Broth medium was found to promote the
highest bacterial growth. The induction of lipase was carried out using olive oil as
substrate. Several reaction parameters on lipase activity such as incubation time,
temperature and amount of substrate were investigated.