Toxic effects of three selected Malaysian timbers plant extracts against subterranean termites

Kadir, Roszaini

doi:10.4067/s0718-221x2017005000201

Cited by 10 publications

(8 citation statements)

References 40 publications

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“…Ragon et al (2008), Rowell (2005), and Miller (1999) stated that extractive substances in wood affect termite attack. Some types of extractive substances are toxic and can cause an increase in the mortality of termites that feed on the wood (Kadir 2017). This is in line with the statement from Syofuna et al (2012) who stated that the extractive substances contained in wood have an important role in resistance to termite or fungal attack.…”

Section: Mass Losssupporting

confidence: 75%

Short Communication: The resistance of Styrax sumatrana wood of varying growth sites and stem axial positions to subterranean termite (Coptotermes curvignathus) attack

et al. 2021

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Abstract. Iswanto AH, Tambunan J, Susilowati A, Hartono R, Darwis A. 2021. Short Communication: The resistance of Styrax sumatrana wood of varying growth sites and stem axial positions to subterranean termite (Coptotermes curvignathus) attack. Biodiversitas 22: 3192-3198. As mega-biodiversity country, Indonesia consists of a large number of flora and fauna, including wood-destroying organisms such as termites. One of the native trees known as a resin producer is Tobanese incense (Styrax sumatrana). The existence of this species has been studied for several wood properties such as physical, mechanical, and chemical properties, while its natural durability against termite attack has not been studied. As a country known as a haven for termites, the study on incense wood durability is very important for further utilization. The objective of this research was to analyze the natural durability of S. sumatrana wood from two growing locations and different stem positions using a graveyard test. The Graveyard test method was used to investigate the mass loss and percentage of damage of the sampled woods. The test sample used is 2x2x20 cm3 in size. The sample is buried as deep as 15 cm and leaving 5 cm of the part that is above the soil surface. The distance between the samples is 60 cm. The results obtained from this study indicated that the incense wood originating from Pakpak Bharat and North Tapanuli districts can be classified as durable class V (Vulnerable category) and severely damaged (E category) with the respective mass loss percentages ranging from 22.03-31.70% and 18.46-20.79% and damage percentages ranging from 86.55-96.27% and 78.02-86.32%. In conclusion, the positions of the stem and the sites where it grows caused a difference in the natural durability value of Styrax sumatrana wood. The incense wood originating from North Tapanuli District had slightly better durability against subterranean termite attacks than that from Pakpak Bharat District, although overall the samples from these two sites fell into the same durability class.

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Section: Mass Losssupporting

confidence: 75%

Short Communication: The resistance of Styrax sumatrana wood of varying growth sites and stem axial positions to subterranean termite (Coptotermes curvignathus) attack

et al. 2021

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“…Phenolic is a main class of secondary metabolites found in plants with broad compounds and known for its bioactivity (Valette et al 2017;Kadir 2017;Al-Huqail et al 2019) with the ability to remove the color of a material (Burtin et al 1998;Kelebek et al 2010). Therefore, the outer bark is often associated with a high amount of phenolic compounds, including flavonoid and flavanol with protective function against pathogens (Popa 2015).…”

Section: Extractive Contentmentioning

confidence: 99%

Extractives Contributing to the Color of Swietenia macrophylla King Bark

et al. 2020

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The bark of Swietenia machrophylla is colored dark red, and it is correlated with the extractives constituents such as phenolic compounds. This study, therefore, aims to investigate extractives from the inner and outer bark of S. machrophylla and their effects to color properties. The results showed that the extractive content in the inner bark was higher than the outer except for hot water solubles. In addition, the polyphenols and sugar levels from inner to outer bark were increased, except in the soluble-sugar of hot water extractive. The highest correlation between the absorbance of methanol, hot water-soluble extracts, and total polyphenols were observed using the visual spectrophotometer. The extractives that contributed to the bark's color were indicated from flavonoids with a precursor such as monophenol of catechol and resorcinol.

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“…The latter values are similar to those obtained in the present study for the non-durable timbers species. High durability is attributed to the effect of extractives Hillis (1972), Tsoumis (1991), Taylor (2004), Syofuna et al (2012), Kadir (2017), as well as to the high density that causes reduction of microbial growth due to lack of oxygen (Tsoumis 1991). The T. donell-smithii, S. humillis and H. polyandra samples were of moderate durability (Table 3), with mass loss values ranging from 6,2% to 9,9% ( Table 6).…”

Section: Durability Of Timbermentioning

confidence: 99%

Assessing the natural durability of different tropical timbers in soil-bed tests

Colín-Urieta

Carrillo-Parra

Rutiaga-Quiñones

et al. 2019

Maderas, Cienc. tecnol.

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Ground contact speeds up timber decay because of the large number of microorganisms in soil. This study, we assessed the natural durability of seven tropical species using the European standard EN-807 (2001). We embedded samples of Dalbergia granadillo, Cordia elaeagnoides, Swietenia humillis, Tabebuia donell-smithii, Hura polyandra, Enterolobium cyclocarpum and Tabebuia rosea and temperate species Fagus sylvatica (as a control) in sandy, clay-sandy-loam and clay-loam for 8, 16, 24 and 32 weeks. We evaluated durability of the samples by determining the mass loss and modulus of elasticity (MOE) loss. The results varied significantly (p < 0,001) depending on timber species and soil type considered. The D. granadillo and C. elaeagnoides were the most durable, with mass losses of 4,5%; 6,5% and MOE losses of 4,5%; 20,5%; respectively. F. sylvatica, T. rosea and E. cyclocarpum samples were the least durable, with mass losses of 22,3-25% and MOE losses of 35,8-59,8% respectively. Decay was most aggressive in sandy-clay-loam soil followed by the clay-loam soil and finally the sandy soil.

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Toxic effects of three selected Malaysian timbers plant extracts against subterranean termites

Cited by 10 publications

References 40 publications

Short Communication: The resistance of Styrax sumatrana wood of varying growth sites and stem axial positions to subterranean termite (Coptotermes curvignathus) attack

Short Communication: The resistance of Styrax sumatrana wood of varying growth sites and stem axial positions to subterranean termite (Coptotermes curvignathus) attack

Extractives Contributing to the Color of Swietenia macrophylla King Bark

Assessing the natural durability of different tropical timbers in soil-bed tests

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