This article discusses common indoor molds that produce mycotoxins and the materials on which they are commonly found. The general public thinks that black indoor molds are toxigenic because of the publicity that Stachybotrys chartarum (a.k.a Stachybotrys atra in the old literature), a black mold, received in the recent years. However, the colour of the indoor […]
Search Results for: Aspergillus
Mycotoxins In Indoor Environment, Their Health Effects and the Moulds Producing Them
Growth of commonly occurring moulds in foods and building materials may result in production of toxic complex secondary metabolic by-products referred to as mycotoxins. Moulds that produce mycotoxins are said to be toxigenic (or incorrectly toxic moulds). According to experts, five kinds of mycotoxins are important in human health: aflatoxins, ochratoxin A, fumonisins, certain trichothecenes […]
Metalworking Fluids Bacteria and Fungi
What are Metalworking Fluids? Metalworking fluids (MWF) is the name given to a range of oils (mineral -petroleum, animal, marine, vegetable or synthetic oils) and other liquids that are used to cool and/or lubricate metal works during machining, grinding, cutting, milling, etc. There are four basic classes of Metalworking Fluids: Straight Oils: Also called "cutting" […]
Common Building Molds and Their Hazard Classes
Building molds are common on damp materials with a water activity value equal to or greater than 0.90. Building molds and yeasts such as strains of Aspergillus fumigatus, Trichoderma spp., Exophiala spp., Stachybotrys spp., Phialophora spp., Fusarium spp., Ulocladium spp., and yeasts such as Rhodotorula spp. grow well on very wet building materials. Materials with a water […]
Dampness, Mould, House Dust Mites and Allergy
The risk of asthma, allergic rhinitis, and atopic (hereditary) dermatitis is higher in damp buildings than non-damp buildings. However, dampness itself may have no or little direct effect to allergy development. Dampness only favours proliferation of biological and increased emission of chemical pollutants. A strong association has been found between exposure to visible mould and […]
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