Field Optimation of Durio zibethinus as Macro-Antifouling at PT Dok and Shipping, Surabaya, Indonesia

Abstract

The use of TBT (Tributyltin) as a mixture of antifouling compounds in ship paint has been banned since 2001, and the use of Natural Product Antifoulant (NPA) as a substitute continues to be made by utilizing many resources. Durio zibethinus is one of the plants suspected of having antifouling compounds, so it needs to be explored its potential as an NPA with field test mechanism on ship plates for 28 days. The result of phytochemical screening test showed that extract of the skin of D. zibethinus positive contains secondary metabolite compound Alkaloid, Terpenoid, Tannin, Flavonoid, and Saponin. Field test results show that D. zibethinus extract has an effect on the area of adhesion and biomass biofouling. In the fourth week of the experiment, the biofouling attachment was recorded at concentrations of 0, 25, 50, 75, and 100 ppm respectively 66.1%, 62.1%, 60.9%, 54.2%, and 47.8 %. As for biomass biofouling recorded 36.6 g, 30.3 g, 20.4 g, 9.6 g and 8.9 g. The identified species of biofouling are only one species of Balanus amphitrite.