Article Per Year (5 Year)
p-Index From 2019 - 2024
0
P-Index
This Author published in this journals
All Journal Jurnal Ilmu dan Teknologi Kayu Tropis
Helmi Gracia
Unknown Affiliation
Agriculture, Biological Sciences & Forestry

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Efikasi Ekstrak Daun Tuba sebagai Anti Rayap Alami (Efficacy of Tuba Leaves Extract as a Natural Antitermite) Syarif Hidayatullah; Andi A Rizaldy; Helmi Gracia; Syahidah Syahidah
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 15, No 2 (2017): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (312.587 KB) | DOI: 10.51850/jitkt.v15i2.395

Abstract

Wood preservation is one way to enhance the durability of wood, especially for low grade natural durable woods. The aim of this research was to evaluate the efficacy of tuba (Derris elliptica)leaves extract against the subterranean termite, Coptotermes sp. The leaves was milled and extracted with ethanol solvent to give it’s extracts. There were two kinds of antitermite test which were conducted in this study, namely direct test (stomach toxic test) and indirect test (respiratory toxic test). The mortality of termites and the weight loss of the paper discs were used to determine antitermite activity of the extract. The result showed that the higher concentration of the extract, the higher mortality of termites for both of the test. The concentration of the extract were 2, 4, and 6% with the mortality 40.0, 69.1 and 93.3%, respectively for direct test and 71.5, 75.8 and 89.7%, respectively for indirect test. Moreover, the weight losses of paper discs of direct test were 5.29, 3.07 and 1.94%, respectively.Keywords: Derris elliptica, natural antitermite, preservative, tuba leaves ekstract
Co-Authors Andi A Rizaldy Syahidah Syahidah Yayi Suryo Prabandari