10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 2 2015 (April - June) Essential oils obtained from plants have recently gained a great scientific interest as a potent source of antimicrobials of natural origin. The present study highlights the anti-fungal activity of essential oils against lessThan i greaterThan Aspergillus flavus lessThan /i greaterThan and lessThan i greaterThan Aspergillus niger lessThan /i greaterThan . During screening of essential oils of six selected Angiospermic plants at 2000 ppm (mg/l) against the test fungus, lessThan i greaterThan Mentha arvensis and Citrus aurantifolia, lessThan /i greaterThan being most effective was selected for further study. The selected oils were subsequently standardized through physico-chemical and fungitoxic properties. The MIC values of lessThan i greaterThan Mentha arvensis lessThan /i greaterThan and lessThan i greaterThan Citrus aurantifolia lessThan /i greaterThan were found to be 1000 and 2000 ppm (mg/l) respectively. Fungitoxicity of both oils represents fungicidal, as well as fungistatic behavior at their respective MIC(s). Study also revealed that oil of lessThan i greaterThan Mentha arvensis and Citrus aurantifoila lessThan /i greaterThan are highly thermo stable (up to 80ºC) and had the potency to withstand high inoculum density. The fungitoxicity of both the oils remained unaltered up to 180-210 days at room temperature. The antifungal potency of oils was found greater when compared with some prevalent synthetic commercial fungicides. Therefore oils could be recommended as a potential source of eco-friendly herbal fungicide and might have role as pharmaceutical and preservatives. ATUL SRIVASTAVA,PRADEEP KUMAR SHUKLA,ASHWINI KUMAR MISHRA,SUBHASHINI AND SUCHIT JOHN Essential oil, Fungitoxic, Aspergillus flavus, Aspergillus niger. 1297-1308