Medical Mycology: Open Access

Probability inspection using solution and ozone gas for lichen removal in historical levels for case study of perspolice pilot

2^nd International Conference on Mycology & Mushrooms
September 25-26, 2017 Chicago, USA

Hossein Naderi

Azad University of Tehran Markaz, Iran

Posters & Accepted Abstracts: Med Mycol Open Access

DOI: 10.21767/2471-8521-C1-003

Abstract

Lichens consists of algae and mushroom coexistence but it is believed that parasitic life of mushroom on algae in the way that mushroom feed from mineral and organic materials of stone.in result of lichens interactions , stone breaks and convert to soil. Some lichen grow out only 1 mm during one year and this coexistent mushroom live for 4000 years and could resist in -600c.there is lichen hazard in all historical buildings but most risk is in stone inscription in fars province that is observed in stone inscription in perspolice. Many methods are proposed but aren�t practical in historical works and results in damages such as mechanical methods or washing by water with high pressure or by bio side which are expensive .in present study , feasibility of ozone is tested and main question is that by what dose and density of ozone solution or gas , lichen could be diminished and also what is destructive effect of ozone on stone and whether it could result in color changes. what is it�s effect on utilized bacteria in lichens and what is it�s effects on algae chlorophyll? some advantages of ozone in comparison with other methods is it�s more safety and it�s low-cost also it�s high oxidation because of it�s ozone structure that include oxygen which affect on microorganism cellular wall very much. Research importance could be inspected from several perspectives ,fist regarding to stone and historical building variety in country and lichen in these works especially in perspolice and present inscription importance in perspolice and high cost of these buildings destruction for country .perspolice inscriptions penetrate some millimeter in stone and in some places ,these lichens could be observed in these inscriptions .lichens could penetrate in stone because of their thallus structure thus it is possible that inscription drawing .mechanical methods for these inscriptions and drawings is disastrous because it is observed that by brushing , thallus would scatter and would grow out more after that. Applying laser and water have it�s disadvantages and exhibit stone erosion .thus applying ozone gas and solution in water could have minimum disadvantage and hazard.