Isolation and Identification of Penicillium Species from Indoor Dust of Mosul Buildings / IRAQ

The study identified 28 fungal genera isolated from house dust samples collected from different areas East and West Mosul city during October 2003 and February 2004. A total of 39 species were identified from the 28 genera. Candida and related yeast were the most abundant (48.71%) followed by Aspergillus (9.7 %) of with 9 species.
Nine species of Penicillium were identified ;P.aurantiogriseum (6.5%), P. camembertii (6.5%), P.chrysogenum (26.0%), P.citrinum (6.5%), P.crustosum (10.9%), P.decumbens (8.7%), P.expansum (24.0%), P.purpurogenum (6.5%) and P. requefortii (4.4 %) and the total isolates was 46 (3.28 %). The total number of Colony Forming Units (C.F.U.) in October 2003 was 5.48X104 /gm dust while in February 2004 it was 8.54X104 /gm dust. As regards the locations of samples the C.U.F. were in houses 1.72 X 104 in kindergartens 1.69X104 ; primary schools 1.41 X104 ; intermediate schools 1.44X104 and secondary schools 1.1 X 104 .