Ex-situ performance of extracts from naturally durable heartwood species and their potential as wood preservatives

Hassan, Babar; Mankowski, Mark E.; Kirker, Grant T.; Ahmed, Sohail; Bishell, Amy B.

doi:10.1007/s00107-019-01443-6

Cited by 17 publications

(6 citation statements)

References 33 publications

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“…Brocco et al [66] found that ethanol extracts of Tectona grandis heartwood increased the resistance and mortality against Nasutitermes corniger in both choice and no-choice tests. Similar results were reported by Hassan et al [67] , who showed that Tectona grandis and Cedrus deodara extracts imparted termite resistance to non-durable wood species.…”

Section: Discussionsupporting

confidence: 90%

Evaluation of Tung Oil (Vernicia fordii (Hemsl.)) for Controlling Termites

Li¹,

Li²,

Liu

et al. 2022

j. of bot. res.

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In worldwide, the use of chemical pesticides to protect wood has been greatly restricted. In recent years, a large number of researchers devoted to the search for natural, safe and non-polluting bioactive chemical compounds from plants as an alternative to synthetic organic chemical preservative. In Chinese folk, tung oil can be used as paint for wooden furniture to protect them from pests. This study aimed to evaluate the chemical compositions of raw and heated tung oil and their activity against termite. In choice bioassays, weight loss of wood treated with 5% raw or heated tung oil after 4 weeks was significantly less than that of the control group. In no-choice bioassays, there was a significant difference in termite survival and wood weight loss on raw and heated tung oil-treated wood. When tung oil-treatment concentrations increased to 5%, wood weight loss was less than 10%. There was no significant difference in termite survival and wood weight loss between raw and heated tung oil-treated wood. Survival of termites in both tung oil wood treatments was significantly lower than that in the starvation control after 4 weeks. Raw and heated tung oil significantly improved the resistance of pine wood to termites, and have the potential for the development of natural wood preservatives.

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Section: Discussionsupporting

confidence: 90%

Evaluation of Tung Oil (Vernicia fordii (Hemsl.)) for Controlling Termites

Li¹,

Li²,

Liu

et al. 2022

j. of bot. res.

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“…Similarly, sesquiterpenes are antifeedant, repellant, and illicit behavioral responses in subterranean termites. Our previous laboratory tests showed that non-durable wood species treated with heartwood extracts of these species were protected against Reticulitermes flavipes and Heterotermes indicola (Wasmann) at 10 mg mL −1 concentration [ 10 , 32 , 33 ]. These extracts are repellant, antifeedant, free radical scavengers, and found to be toxic to the symbiotic protozoa of these two termite species in laboratory tests [ 7 , 32 ].…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies also showed that T. grandis extracts were effective against decay fungi [ 34 ]. Antifungal properties derived from extracts of C. deodara have been reported to be effective against Trametes versicolor (L.) Lloyd, Aspergillus fumigatus Fresen, and Candida albicans Berkh [ 33 , 35 ]. Similarly, extracts from D. sissoo showed antifungal activities against Alternaria and Fusarium species [ 36 ].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Heartwood Extracts Combined with Linseed Oil as Wood Preservatives in Field Tests in Southern Mississippi, USA

Hassan

Mankowski

Kirker

2021

Insects

Self Cite

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Heartwood extracts of naturally durable wood species are often evaluated as alternatives to chemical wood preservatives, but field data from long-term performance testing are lacking. The current study evaluated the long-term (five-year) performance of two non-durable wood species treated with heartwood extracts of either Tectona grandis, Dalbergia sissoo, Cedrus deodara, or Pinus roxburghii alone or combined with linseed oil. Stakes (45.7 × 1.9 × 1.9 cm) and blocks (12.5 × 3.75 × 2.5 cm) cut from the sapwood of cottonwood and southern pine were vacuum-pressure impregnated with the individual heartwood species extract, linseed oil, or a mixture of each individual wood extract and linseed oil. For comparison, solid heartwood stakes and blocks of the wood species used to obtain extracts were also included in the tests. All samples were exposed for five years to decay and termites at a test site in southern Mississippi using ground contact (AWPA E7) and ground proximity (AWPA E26) tests. Results showed that extract-oil mixtures imparted higher termite and decay resistance in cottonwood and southern pine than linseed oil only or the individual heartwood species extract in both tests. However, these treatments were as not effective as to commercially used wood preservatives, copper naphthenate (CuN) or disodium octaborate tetrahydrate (DOT) in either test. Moreover, solid heartwood P. roxburghii stakes were completely decayed and attacked by termites after five years in the ground contact test. In contrast, C. deodara stakes were slightly attacked by termites and moderately attacked by decay fungi. However, T. grandis and D. sissoo stakes showed slight to superficial attack by termites and decay fungi in ground contact test. In contrast, T. grandis and D. sissoo blocks showed slight decay fungi attack in above-ground tests. However, termites did not attack T. grandis, D. sissoo, and C. deodara blocks. However, decay fungi moderately attacked C. deodara blocks, and P. roxburghii blocks were severely attacked by decay fungi and termites in the above-ground test.

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“…Inspired by the field of wood bionics, the effective fractions (alkaloids, phenols, aldehydes, etc. ) in plants that have bacteriostatic effects have been extracted and further developed into preservatives (Hassan et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Isolation and identification of the antibacterial compounds in Coptis chinensis for the preservation of wood

Wang

Zhao

et al. 2021

BioRes

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Wood is a biomass material that is easily eroded by wood-rotting fungi. Coptis chinensis is a natural green plant, which has an inhibitory effect on most microorganisms. Based on the highly toxic effects of the currently used wood chemical preservatives on humans, animals, and the environment, Coptis chinensis was selected to perform decay resistance experiments of wood in this paper. The active ingredients with bacteriostatic properties in Coptis chinensis were separated and screened via chemical treatment, and their structure was identified via nuclear magnetic resonance spectroscopy. The primary bacteriostatic components in Coptis chinensis were berberine hydrochloride, palmatine, and jatrorrhizine. The bacteriostatic zone experiment with a single component and different compounds for white-rot and brown-rot fungus were tested by the disc agar diffusion method. The bacteriostatic effect of berberine hydrochloride in a single active fraction was better. The three-fraction compound had the best bacteriostatic effect and was equivalent to alkaline copper quaternary. The natural active bacteriostatic fractions in Coptis chinensis had noticeable inhibitory effects on white-rot fungus (Trametes versicolor (L.) Lloyd) and brown-rot fungus (Gloeophyllum trabeum (Pers.) Murrill). The minimum bacteriostatic concentration was 0.01 g/mL. The results showed that Coptis extracts had potential as a wood protectant.

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Ex-situ performance of extracts from naturally durable heartwood species and their potential as wood preservatives

Cited by 17 publications

References 33 publications

Evaluation of Tung Oil (Vernicia fordii (Hemsl.)) for Controlling Termites

Evaluation of Tung Oil (Vernicia fordii (Hemsl.)) for Controlling Termites

Evaluation of Heartwood Extracts Combined with Linseed Oil as Wood Preservatives in Field Tests in Southern Mississippi, USA

Isolation and identification of the antibacterial compounds in Coptis chinensis for the preservation of wood

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