Bio-efficacy of Debaryomyces hansenii on the incidence and growth of Penicillium italicum on Kinnow fruits in combination with Oil and Wax emulsions
2002
Singh, D. (Central Institute of Post Harvest Engineering and Technology, Abohar (India))
Survival of Debaryomyces hansenni in oil, wax and fungicide was tested . Four different type of oils (castor, linseed, mustard and sesamum), and four waxes such as stayfresh (shine), stayfresh (storage), citrashine and zivdar and three fungicides (bavistin, blitox-50 and dithane M-45) at concentrations of 100, 500 and 1000 ppm were taken. No spore survived in all wax emulsions after 48 hrs whereas in oil the spores were not reduced significantly in castor (7.89 log cfu/ml) mustard (7.11 log cfu/ml) and sesamum oil (7.88 log cfu/ml). Dithane M-45 was found highly lethal to Debaryomyces hansenii even at 100ppm . Minimum incidence of Penicillium italicum (27.78%) was found in D. hansenii alone (10 (9) spores /ml) treated fruits followed by D. hansenii + mustard oil at 22øC. The growth of P. italicum wa suppressed in D.hansenni + mustard oil (0.02 - 0.5 cmý) treated fruits after 60 days of storage at 5ñ1øC.
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