Food Specialist, Iranian National Standard Organization, Tehran, Iran.
The object of this research was to find an alternative to fungicide for the prevention of postharvest fruits. Therefore the effect of Zataria multiflora essential oil on the quality of Sultana grapes following the harvest was investigated. The essential oil was extracted by hydro-distillation and analyzed using a combination of GC and GC/MS. The results indicated a high percentage of anti-fungal components such as Thymol (44.4%) and Carvacrol (26.3%) in the extracted essential oil. The grapes were contaminated with Botrytis cinerea spores suspension at the concentration of 5×105 per ml sterile distilled water. The samples were treated with suspension of 0 to 200 and 400 mgL-1 Zataria multiflora essential oil and stored at 4 °C. Samples were examined and experimental design in a completely randomized design with three replications were employed. The results revealed that by increasing the concentrations of the essential oil, the anti-fungal activity against Botrytis cinerea was increased.