Evaluation of antitermitic activity of different extracts obtained from Indonesian teakwood (Tectona grandis L.f)
Rudia,b, Bhat I.H.b, Abdul Khalil H.P.S.b, Naif A., Hermawan D.d
a School of Life Sciences and Technology, Institute of Technology Bandung, Indonesia
b School of Industrial Technology, Universiti Sains Malaysia, Malaysia
c Department of Botany and Microbiology, College of Science, King Saud University, Saudi Arabia
d Department of Forest Product, Faculty of Forestry, Kampus IPB, Darmaga, Bogor Agricultural University, Indonesia
Abstract
The antitermitic activity of different extracts obtained from Tectona grandis L.f was investigated against Coptotermes curvignathus (Holmgren). The main objective of this work was to determine the mortality rate of termites by the teak wood extracts. Different extracts exhibited different degree of antitermitic activity. A teak wood with age of 39-59 years and 59-79 years were selected from Purwakata and Cepu regions of Indonesia, respectively. As per earlier reports, quinones are considered as toxic to termites, and these quinones are found in abundance in teak wood. Among the extracts of petroleum ether, acetone/water (9:1), and ethanol/water (8:2), the acetone/water (9:1) extracts exhibited strong activity. The surface morphology of extracted wood samples was observed by scanning electron microscopy in order to reveal evidence of change.
Author keywords
Indonesia,Mortality rate,Petroleum ether,Scaning electron microscopy (SEM),Teak age,Tectona grandis,Termites,Wood extracts,Wood samples
Indexed keywords
Scaning electron microscopy (SEM),Teak age,Tectona grandis L.f,Termites