Abstract :
Sand sea cucumber (Holothuria scabra) is one type of marine invertebrates
with family Holothuriidae and is a member of Enchinodermata animals. Types of
animals have been used as raw materials in traditional medicine. The aims of this
reseach are to isolate the bioactive compounds contained in the ethanol extract of
sand sea cucumbers and to know its major bioactivity. This research conducted in
several methods namely extraction, fractionation, identification using thin layer
chromatography (TLC) and qualitative test to determine secondary metabolites, as
well as the characterization by FTIR. Results obtained from the isolation is a pure
isolate by weight of 0.0203 grams of yellowish white paste. Purification was
performed using three systems eluent as well as FTIR spectroscopy. The results
showed that the compounds in pure isolates are alkaloids. Viscous extract and pure
isolates subsequently tested its antibacterial test disc diffusion method using bacteria
Salmonella thypi and Staphylococcus aureus. The results showed that the extract
activity of the bacteria Salmonella thypi and Staphylococcus aureus into the strong
category with optimum diameter of clear zone respectively 11.50 mm and 12.30 mm.
Keyword: Disc Diffusion, Isolation, Bioaktive Compound, Sand Sea Cucumber
(Holothuria scabra).