Caffeine Interactions with Wood Polymers

Kobetičová, Klára; Ďurišová, Kristýna; Nábělková, Jana

doi:10.3390/f12050533

Cited by 10 publications

(27 citation statements)

References 29 publications

(44 reference statements)

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“…Then 100 ± 50 mg of each wooden sample was used for leaching in distilled water. The concentrations of studied substances in wooden layers were analyzed by spectrophotometer Libra SX 22 at an optimal wavelength 287 nm (Kobetičová et al 2021). b) An aqueous stock solution of theophylline (1 g.L -1 ) was prepared for the experiment.…”

Section: Chemical Analysismentioning

confidence: 99%

“…Determination of all solutions with or without theophylline (5 mL) was performed by UV-VIS spectrometry (spectrophotometer Biochrom Libra S22) at the optimal wavelength of theophylline (287 nm). The same experiment with caffeine was performed in a study of Kobetičová et al (2021), and for this reason the test with caffeine was not repeated again. The caffeine concentration was 1 g.L -1 (Kobetičová et al 2021) Test species Serpula lacrymans (Schumacher ex Fries) Karsten (strain BAM Ebw.…”

Section: Chemical Analysismentioning

confidence: 99%

“…The same experiment with caffeine was performed in a study of Kobetičová et al (2021), and for this reason the test with caffeine was not repeated again. The caffeine concentration was 1 g.L -1 (Kobetičová et al 2021) Test species Serpula lacrymans (Schumacher ex Fries) Karsten (strain BAM Ebw. 315) and Coniophora puteana (Schumacher ex Fries) Karsten (strain BAM Ebw.…”

Section: Chemical Analysismentioning

confidence: 99%

“…After incubation, the growth of mycelium on the top side of the samples was visually observed at 10× magnification and rated individually using the degree scale according to ISO EN 846 (1997), where 0 indicated no growth, 5 indicated heavy organismal growth. Surface fungal and mold mycelium was removed from each sample PEER-REVIEWED ARTICLE bioresources.com Kobetičová et al (2021). "Caffeine & wood protection," BioResources 16(3), 6231-6243.…”

Section: Biological Testsmentioning

confidence: 99%

“…PEER-REVIEWED ARTICLE bioresources.com Kobetičová et al (2021). "Caffeine & wood protection," BioResources 16(3), 6231-6243.…”

Section: Introductionmentioning

confidence: 99%

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Influence of selected storage temperatures on wood properties and its biological resistance after the use of methylxanthines

Kobetičová

Böhm

Nábělková

et al. 2021

BioRes

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Methylxanthine’s fungicidal properties were investigated, with attention to the temperature of treatment. Caffeine and theophylline treatments of beech and spruce woods were applied for three months in the temperature range of -20 to 40 °C, simulating potential weather conditions in the European region and temperatures specific for various wood applications (cellars, wine cellars, room indoor temperatures, interior trusses). Effects of the selected temperatures were considered without the influence of the other possible factors, which have been considered in previous studies (e.g. effects of temperature in combination with other factors such as UV radiation, humidity, and chemical or biological degradation). Then, the specimens were exposed to a mix of molds and fungi for three months under controlled laboratory conditions in order to analyze a possible subsequent biological attack. The results did not show any effect of temperature of the methylxanthine treatment within the studied range on the organismal activity. Caffeine exhibited a better protective potential than theophylline and was more effective for spruce than for beech. The results indicated the suitability of caffeine for protection of spruce and spruce-based materials in interior applications at a stable temperature without significant effects of UV and humidity.

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Section: Chemical Analysismentioning

confidence: 99%

Section: Chemical Analysismentioning

confidence: 99%

Section: Chemical Analysismentioning

confidence: 99%

Section: Biological Testsmentioning

confidence: 99%

“…PEER-REVIEWED ARTICLE bioresources.com Kobetičová et al (2021). "Caffeine & wood protection," BioResources 16(3), 6231-6243.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of selected storage temperatures on wood properties and its biological resistance after the use of methylxanthines

Kobetičová

Böhm

Nábělková

et al. 2021

BioRes

Self Cite

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Chitosan–caffeine formulation as an ecological preservative in wood protection

et al. 2022

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Nowadays, taking into account environmental degradation, climate changes, as well as, environmentally friendly regulations and increasing ecological awareness of consumers, methods of wood protection without negative impact on the environment are being intensively developed. In this study, a mixture of chitosan and caffeine was proposed as ecological wood preservative. The aim of the research was to evaluate the application of chitosan (medium and high molecular weight) as an agent limiting the leaching of caffeine from the structure of treated wood. The resistance of pine wood treated with chitosan–caffeine preparations and ingredients of these preparations (caffeine and chitosan) to brown rot fungus—Coniophora puteana was assessed. The degree of caffeine leaching from the treated wood was determined by chromatographic analysis (caffeine concentration) and elemental analysis (nitrogen concentration). The results showed that chitosan limited caffeine leaching from wood, which was confirmed by chromatographic analysis and changes in the wood structure observed in FTIR spectra. Moreover, wood treated with chitosan–caffeine preparations showed resistance against C. puteana (mass loss about 0.5%); however, antifungal activity was reduced when treated wood was subjected to leaching with water (mass loss about 10%). The obtained results suggest that the chitosan–caffeine preparations can be promising ecological preservatives for the wood treatment.

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