Potential of unripe papaya peel extract as a biofungicide against post-harvest pathogen of salak madu

Abstract

This study was conducted to isolate Fusarium oxysporum from salak madu (Salacca sumatrana Becc.) and determine the suitable unripe papaya peel extract concentration on inhibition of F. oxysporum under laboratory conditions. It is found that unripe papaya extracts exhibited fungicidal effect against F.oxysporum at 0.08 gmr 1 in the in vitro study. In the in vivo study, application of unripe papaya peel extracts at 0.24 gmr 1 had antifungal activity against F.oxysporum curatively and protectively on salak fruits based on quality attributes such as, disease severity, disease incidence, and flesh firmness as compared to untreated fruits. However, protective and curative treatments had no influence on pH, total soluble solid, chroma and hue angle on fruits. This result suggests unripe papaya peel extracts has a potential to be used as a biofungicide against Fusarium oxysporum of salak fruit.