Evaluation of Color Change and Biodeterioration Resistance of Gewang (Corypha utan Lamk.) Wood

Dodi Nandika,Imam Busyra Abdillah,Wayan Darmawan,Salim Hiziroglu,Yusuf Sudo Hadi,Lina Karlinasari

doi:10.3390/app10217501

Dodi Nandika, Imam Busyra Abdillah + Show 4 more

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https://doi.org/10.3390/app10217501

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Abstract

Gewang (Corypha utan Lamk.) is one of the endemic palm species which has been used as a building material for many years in Indonesia. The objective of this study was to enhance the overall resistance of gewang wood to biological deterioration by using smoke treatment. Samples taken from different parts of the trunks, namely bottom, middle, and upper parts in a longitudinal direction and outer and inner parts in a transversal direction, were exposed to the smoking process. Discoloration, dry-wood termite (Cryptotemes cynocephalus) and fungi (Schizophyllumcommune) resistance of smoked samples were determined according to the Indonesian standard. Based on the findings in this work, discoloration of smoked specimens was more prominent than that of the unsmoked samples. Overall termite and decay resistance of smoked samples were enhanced and higher than those of unsmoked samples without any influence of longitudinal and transversal orientations within the trunks. It appears that smoking can be considered as a potential method to improve decay and termite resistances of gewang wood.

Highlights

Log production for the Indonesian wood industry reached 47.9 million m3, with 85% of production being from plantation forests in 2018 [1]
Smoked were not significantly different, as indicated by the value changed was a small number. These findings revealed that smoke treatment for samples resulted in different colors
It is known that smoke has toxic or carcinogenic compounds such as the polycyclic aromatic hydrocarbons (PAH) group that can cause permanent damage to living organisms [31,32]

Summary

Introduction

Log production for the Indonesian wood industry reached 47.9 million m3 , with 85% of production being from plantation forests in 2018 [1]. The need for timber supply in the country significantly increased by 4 million m3 /year, causing a serious shortage of high-quality timber in the last four years This requires multiple approaches, including exploration of “new timber” resources, from endemic species. The inner part of the gewang trunk has significantly lower density, as well as modulus of elasticity (MOE) and modulus of rupture (MOR), compared to those of the middle and outer parts [5]. This leads to ineffective utilization of the inner part of gewang trunk as a building material. The inner part of gewang trunk is very susceptible to biodeterioration [6]

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