Author:
Samarrai Ghassan.F.Al.,Khaleel Rana Ibrahim
Abstract
Abstract
Three ethanol extracts (concentrations 500-5000 ppm) from Eucalyptus camaldulensis L., Nerium oleander, L(Oleander) and Ricinus communis.L (Castor) were evaluated for their anti-microbial activity on the fungus Colletotrichum gloeosporioides Penz. The toxicity (LC50) of these extracts was determined using the (BST) Brine Sharimp test. Crude extraction of Oleander and Castor plant showed a complete fungal inhibition zone in PDA medium at 3000ppm (100%) in the mango anthracnose in vitro, while Eucalyptus recorded more than 80% fungus inhibition. The LC50 value of those extracts was ranged from 5 mg/ml to 495mg/ml, levels that were for below the hight toxic level of 0.2 mg/ml based on their safe levels fungal inhibition of Colletotrichum gloeosporioides. The botanicals can be considered as alternative to synthetic in future researches.
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