Organic Microbiological Studies: Effects of Organic Dyes(GentianViolet or Methylene Blue)On Laser Lethal photosensitization of Fungus Aspergillus flavus Treated with Boric Acid

Abstract Organic Dyes (Gentian Violet or Methylene Blue) had increased the lethal photosensitization of Aspergillus flavus, when were treated with boric acid of different concentrations (1% and 2%) and exposed to He-Ne laser light with absorbed doses of 1.06 and 2.12 joules/cm2 respectively and survivors enumerated. The inhibition of fungus growth was 92.2 and 96.6 % (Percentage differences from control PDC) for the coloring by Gentian Violet and 84.4and 87.7% for Methylene Blue.