A PRELIMINARY STUDY OF THE UTILIZATION OF CU(II) MODIFIED LIQUID SMOKE TO INHIBIT THE ACTIVITY OF WHITE-ROT FUNGI (SCHIZOPHYLLUM COMMUNE FR) IN A PINEWOOD IN-VITRO

Abstract

This study aims to examine the possibility of utilizing Cu(II) modified liquid smoke as an
antifungal agent against Schizophyllum commune Fr. in a laboratory test. The liquid smoke was obtained
through the pyrolysis of oil palm kernel shells at 300°C, 340°C, and 380°C. The analysis of liquid smoke as
an antifungal agent was performed using potato dextrose agar (PDA) media and nystatin as positive controls.
The white-rot fungi of Schizophyllum commune Fr. were isolated from fungally infected wood and
regenerated for 5x24 hours. Observation of the inhibiting zone was done in 24 hours. The results showed that
the presence of Cu(II) can increase the inhibiting zone of white rot fungus. The Cu(II)-modified liquid smoke
was able to significantly inhibit the growth of white-rot fungi even in low liquid smoke concentrations. The
highest inhibiting zone of Schizophyllum commune Fr. was obtained with 3% Cu(II)-modified liquid smoke
(obtained from a pyrolysis temperature of 380°C).