Antitermitic activity of extractives from three Brazilian hardwoods against Nasutitermes corniger

Santana, Andréa Lopes Bandeira Delmiro; Maranhão, Claudia A.; Santos, Jefferson Cleriston Barros dos; Cunha, Franklin Magliano da; Conceição, Gonçalo Mendes da; Bieber, Lothar W.; Nascimento, Márcia Silva do

doi:10.1016/j.ibiod.2009.07.009

Cited by 40 publications

(24 citation statements)

References 31 publications

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“…After the dose increased to 20% w/w, the termite dead was increased to 100% after 4 days for both of extracts (Table-1). The above data suggested that both of the extracts contained antitermitic compounds, the results similarly with reported other tropical hardwood extracts [9][10][11] . On the statistical analysis, termiticidal activity both of methanol extracts are no significantly different at a doses of 5% w/w and 20% w/w after 8 and 4 days successively.…”

Section: Extraction and Fractionation Of Toona Sinensis Stem Bark Andsupporting

confidence: 89%

INSECTICIDAL ACTIVITY OF Toona sinensis AGAINST Coptotermes curvignathus Holmgren

2017

Rasayan J Chem

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Toona sinensis timbers are generally used in the furniture and building material in Indonesia, due to their reputed durability. The aim of this study was to identify the potential compounds responsible for the antitermite activity of T. sinensis against Coptotermes curvignathus. The methanol extracts of stem wood and stem bark of T. sinensis showed termiticidal activity. Our phytochemical investigated have been isolated two flavonoid compounds (+)-catechin (1) and its dimer procyanidin B3 (2) and one steroid compound β-sitosterol-D-glucoside (3) by bioassay-guided from Toona sinensis stem bark and tested them to antitermite activity by the no-choice test. In addition, we investigated the antitermite activity of (-)-epicatechin, (-)-epicatechin gallate and (-)-epigallocatechin gallate together with the isolated compounds in laboratory scale at a dose of 0.8% w/w. The results showed that (+)-catechin had the highest antifeedant and termiticidal activity after 21 days exposure to all other compounds tested, but no significant difference in mortality to its dimer procyanidin B3, diastereoisomer (-)-epicatechin and galloylated catechin (-)-epigallocatechin gallate on statistical analysis.

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Section: Extraction and Fractionation Of Toona Sinensis Stem Bark Andsupporting

confidence: 89%

INSECTICIDAL ACTIVITY OF Toona sinensis AGAINST Coptotermes curvignathus Holmgren

2017

Rasayan J Chem

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“…Both the low carbohydrate content (mainly derived from hemicelluloses) and the presence of low molecular weight phenolics in PB1000 (such as syringaldehyde, acetosyringone) were susceptible to alter the physiology of the termites and jeopardize their survival. Likely, the decrease in termite survival rates in the presence of PB1000 was due to the low molecular weight phenolics confirming the statements that these compounds are among the mainly low molecular weight extractives which are known to inhibit the biological activities of termites [30]. The lower termite survival rates could also be explained by the repulsive effect of PB1000 observed during experiments, keeping away termites from the substrate.…”

Section: Discussionsupporting

confidence: 72%

A technical soda lignin as sole carbon-diet for a higher termite species, Nasutitermes ephratae: insight into the changes in the gut bacterial community and in the lignin phenolic fraction

Miambi¹,

Jusselme²,

Cézard³

et al. 2020

Preprint

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BackgroundTermites account for natural biomass utilization systems (NBUS) that evolved the ability to overcome the overall recalcitrance of lignins towards lignocellulose transformation processes. With the objective of applying this capacity to the conversion of technical lignins produced by biorefineries, a higher wood-feeding termite species, Nasutitermes ephratae was fed with a commercial grass soda lignin (Protobind 1000, PB1000). The survival rates of Protobind 1000-fed termites were determined as well as changes in the structure of gut bacterial community and in the chemical composition of this technical lignin. ResultsThe ingestion of PB1000 by worker castes of N. ephratae was revealed by Pyrolysis-Gas Chromatography Mass Spectrometry (Py-GC/MS) analyses directly performed on termites. Survival rates were reduced by two –fold in the termites fed with PB1000 compared to controls. The relative abundance of Firmicutes and Bacteroidetes increased in the gut bacterial community of termites fed with PB1000. The digestion of PB1000 by termites triggered an increase in the syringyl-to-guaiacyl (S/G) ratios. These changes in the chemical composition of PB1000 in the gut of termites was marked by a decrease in relative content of free phenolic monomers.ConclusionThis work showed the abilities of digestive tract of a wood-feeding higher termite species, N. ephratae to metabolize the fraction of the volatile phenolic monomers of PB1000. Overall, our results provide insights into the bacterial lineage candidates for development of bacterial inoculum for pretreatment processes in valorization of technical lignin in biorefinery.

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“…The relationship between extractives and natural durability of wood was first reported by Hawley et al (1924). The natural durability of wood is often related with its toxic extractive components (Scheffer and Cowling 1966;Carter et al, 1978;Hillis 1987;McDaniel 1992;Taylor 2006;Santana et al, 2010).…”

Section: Extractives and Natural Resistance Of Woodmentioning

confidence: 99%

Phenolic Extractives and Natural Resistance of Wood

Nascimento¹,

Santana²,

Maranhão³

et al. 2013

Biodegradation - Life of Science

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Antitermitic activity of extractives from three Brazilian hardwoods against Nasutitermes corniger

Cited by 40 publications

References 31 publications

INSECTICIDAL ACTIVITY OF Toona sinensis AGAINST Coptotermes curvignathus Holmgren

INSECTICIDAL ACTIVITY OF Toona sinensis AGAINST Coptotermes curvignathus Holmgren

A technical soda lignin as sole carbon-diet for a higher termite species, Nasutitermes ephratae: insight into the changes in the gut bacterial community and in the lignin phenolic fraction

Phenolic Extractives and Natural Resistance of Wood

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