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Research Paper | Microbiology | Egypt | Volume 3 Issue 11, November 2014
Studies on Indoor Air Quality in the Repositories of the National Library and Archives of Egypt
Sahab Ahmed F., Sidkey Nagwa M., Abed Nermine N., Mounir Ayah
Microbiological contamination with fungi and bacteria can pose a significant destroy to old manuscripts or health hazard to those working in archives or library. Quantitative analysis revealed air microbiological contamination with moulds ranged from 15.72-369.45 cfu x103 /m3 of air, while bacteria ranged from 94.35-660.48 cfu x103 /m3. The air sample analysis yielded 2917.08 fungal colonies classified into 7 genera of which Penicillium spp. (20.22%), Aspergillus flavus (20.76%), Trichoderma viride (12.94%), Alternaria tenuis (10.79%) and Aspergillus niger (10.51%) were the main contaminating mould of all tested repositories and they together constituted 54.42% of the total airspora. Aspergillus flavus and Penicillium spp. were the dominant component in the indoor air with a total concentration of 605.48 and 589.74 cfux102 /m3 with frequency occurrence of 20.76 and 20.22% respectively. Its highest concentration was recorded in August (259.49 and 314.53cfu x103 /m3) and the lowest during winter in January (141.54 and 125.81 cfux103 /m3) respectively. The obtained data showed that, of the 53 fungal isolates screened for cellulolytic activity on carboxymethyl cellulose (CMC) only 31 (58.49%) had the ability to grow. Moreover, only 12 out off 31fungal isolates had a high ability to decompose CMC in Czepek's medium. All essential oil tested materials were found to highly effective and gave 100% reduction in the growth of F. oxysporum and T. viride fungi at the higher concentration of 0.4%. The Tea tree essential oil was most effective against F. oxysporum responsible for 65.3 mean % inhibition followed by Anise essential oil responsible for 63.2 mean% inhibition without significant difference. While, Rocket essential oil was the most effective against T. viride responsible for 70.4 mean % inhibition
Keywords: GEBO, fungi, bacteria, bio-deterioration, cellulolytic activity, essential oil
Edition: Volume 3 Issue 11, November 2014
Pages: 2122 - 2128
How to Cite this Article?
Sahab Ahmed F., Sidkey Nagwa M., Abed Nermine N., Mounir Ayah, "Studies on Indoor Air Quality in the Repositories of the National Library and Archives of Egypt", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=OCT14956, Volume 3 Issue 11, November 2014, 2122 - 2128
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