Decay inhibition of maple wood with nano-zinc oxide used in combination with essential oils
2016
Reinprecht Ladislav | Vidholdová Zuzana | Gašpar František
This work investigates the anti-decay efficiency of nano-zinc oxide (ZnO-Nano: 0.1, 0.33, 1 or 3% ethanol dispersions), three essential oils (clove, oregano and thyme: 1 or 3% ethanol solutions), as well as their mixtures – introduced into samples 25×25×3 mm (L×R×T) of maple wood (Acer pseudoplatanus) by dipping at 20°C/1h our. The anti-decay efficiency of all treating substances was valued against the white-rot fungus Trametes versicolor, based on a drop of mass losses of treated samples in relation to untreated ones during their 6 week’s exposure in fungal mycelia in petri dishes. The best decay inhibition of maple wood was achieved after its treatment with the 3% nano-zinc oxide (retention of ca 5 kg·m-3) when the mass losses of wood decreased from 20.4% (untreated wood) to 5% (treated wood). On contrary, the anti-decay efficiency of essential oils against the T.versicolor was either poor (using clove and thyme oils) or even none (using oregano oil). Individual essential oils did not have synergetic/promoting effect for increasing the anti-decay efficacy of nano-zinc oxide.
显示更多 [+] 显示较少 [-]