The Effect of Methoxy Psoralen in Presence of UVA on the viability of conidia of the fungus Aspergillus amstelodami

In the present research we studied the effect of 8- methoxypsoralen ( 8-MOP) and long wave ultraviolet (UVA) light on the viability of conidia of the fungus Aspergillus amstelodami. The conidial suspension was treated with 8-MOP(15 Mg/ml) for 5 min, and then exposed to UVA. Seven exposure times (0, 5, 10, 15, 20, 25, 30 min) were tested and appropriate dilution of the conidial suspension for each treatment was plated on minimal medium to which Sodiumdeoxycholate(D) was added. The plates were incubated for four days at 30 C. Viability of conidia was significantly reduced as the exposure time to NUV increased.