BIOAKTIVITAS Ulva reticulata Forsskal. ASAL GILI KONDO LOMBOK TIMUR TERHADAP BAKTERI

Abstrak

The  bioactivity of Ulva reticulata Forsskal from Gili Kondo, East Lombok have done to Bacillus subtilis, Staphylococcus aureus, and Escherichia coli using Kirby Bauer paper disc method. The Completely Randomized Design using factorial form of 3 x 6  with four replication are selected in this experiment. The  data analysis used Analysis Varians and continued with Duncan’s test.  Parameters was measured to diversity of  Ulva  are total species were founded and diameter of  zona growth inhibition of bacterial test.

The Research result showed that the crude extract of U. reticulata and its fractions contain secondary metabolites which have an antibacterial activity to all tested bacteria.The highest activity of antibacterial was founded in methanol extract of U. reticulasta wich concentration of 25 % gives inhibitioin zone of 8,69 mm.

The 12.5 %  fractions of U. reticulata in  methanol showed inhibition zone growth bacterial is  8,40 mm and for 10 % of its in   n-hexane fraction gives growth  inhibition zone bacterial was  8,13 mm.