Lignin als biologische Barriere gegen Schimmelpilze in Innenräumen

• Published in: Gesunde Pflanzen Vol. 65; no. 1; pp. 15 - 20
• Main Authors: Hörmann, Vanessa, Goßmann, Monika, Büttner, Carmen, Ulrichs, Christian
• Format: Journal Article
• Language: German
• Published: Springer-Verlag 2013
• Subjects: agar; Alternaria alternata; biological resistance; Botrytis cinerea; building construction; buildings; Cladosporium herbarum; color; construction materials; cracking; Fusarium culmorum; Fusarium verticillioides; lignin; mixing; molds (fungi); Mucor; Penicillium; plaster; toxicity; Trichoderma
• ISSN: 0367-4223; 1439-0345

Many different fungi grow indoors as mold in the presence of moisture. Some of these fungi can cause allergic or toxic reactions, while a few may cause infections in susceptible individuals. A comprehensive treatment of this complex topic would take volumes. Therefore many groups search for alternative management strategies of these fungi. It has been tested if the growth of nine fungi (Alternaria alternata, Botrytis cinerea, Cladosporium herbarum, Fusarium culmorum, F. solani, F. verticillioides, Mucor sp., Penicillium sp. and Trichoderma sp.) which are common in interior buildings could be inhibited by mixing lignin into wall plaster. In maltextract agar lignin concentrations above 10 % inhibited mould growth except for Penicillium sp. However, none of the mould species showed and degradation of lignin. Further investigations on a lignin-plaster-agar, which contained only plaster as nutrient and had a high pH at 8, showed no inhibition on the tested fungi (Alternaria alternata, Fusarium verticillioides, Mucor sp., Trichoderma sp. and Penicillium sp.) at concentrations up to 5 %. Higher lignin concentrations lead to insufficient quality of building materials, e. g. cracking. Furthermore the color of the building materials turned from greyish-white in an exotherm reaction into brown, become not any more suitable for construction purposed.