Citation:Jayaratna, K.H.T., Pranagama, P.A., Abeywickrama, K.P., and Nugaliyadde, L., (2002). Inhibition of aspergillus flavus link and aflatoxin formation hy essential oils of cinnamomum xeylanicum (L) and cymbopogon nardus rendle , Postgraduate Institute of Agriculture, University of Peradeniya: Peradeniya Vol 14. 148-153
Date:2002
Abstract:
The essential oils of Cinnamomum zeylanicum (L.) leaf and Cvmbopoeon
nardus Rendle were tested for their fungistatic, fungicidal and qflatoxin suppressing
efficacy against an isolate of Aspergillus flavus Link, isolated from rice. The mycelial
growth and the aflatoxin formation in SMKY semi synthetic liquid medium in the presence
of different concentrations of two test oils were monitored.
At concentrations varying from 100 to 500 ppm of the essential oil of C.
zeylanicum. the mycelial dry weight decreased from 0.49 to 0.01 g/50 ml. The percentage
inhibition of the mycelial growth of A. flavus increased from 50 to 95 when treated with
1000 to 1800 ppm of C. nardus oil. The minimum lethal concentrations (MLCs) for the
essential oils of C. zeylanicum leaf and C. nardus were 1000 and 4000 ppm, respectively.
Aflutoxins were not present in the medium at or above the concentrations of400 and 600
ppm C zeylanicum leaf and C nardus oils, respectively