ABSTRACT
Moulds are part of the natural environment and grow practically everywhere. They are microscopic fungi that are found indoors and/or outdoors throughout the year (Carlile et al. 2001, Deacon 1997, Samson et al. 2004). Moulds grow best in warm, damp, humid conditions and spread with the help of the spores they are producing. On moist, nutrient-rich substrates the spores can germinate into tiny fi laments called hyphae that form mycelia upon further extension (Deacon 2006, Pitt and Hocking 2009, Webster and Weber 2007). Mould spores can survive harsh environments, such as, dry conditions that are not suitable for microbial growth (Pitt and Hocking 2009). Moulds are heterotrophic that break down organic materials with the help of extra cellular enzymes and absorb carbon for energy (Pitt and Hocking 2009, Webster and Weber 2007).
