NATURAL BIOPESTICIDE PREPARATION AS ANTIMICROBIAL MATERIAL BASED ON LIGNIN PHOTODEGRADATION USING MINERAL ILMENITE (FeO.TiO2)

Abstract

Natural biopesticide has been prepared by lignin photodegradation for antimicrobial activity on Fusarium oxysporum and Xanthomonas sp. The photodegradation process in UV reactor was performed by FeO.TiO2 mass and lignin concentration variations. The results showed that lignin concentration on 500 ppm and 700 ppm with 0.2 g FeO.TiO2 as an optimum mass to degrade lignin were 20.63% and 27.17%. Based on antimicrobial activity test against Fusarium oxysporum showed that the lignin degradation compound in 300 ppm, 500 ppm, and 700 ppm were 11.67 mm, 13 mm, and 21 mm diameter zone. Meanwhile, the results of lignin degradation compound have a good activity test of Xanthomonas sp. for 300 ppm, 500 ppm, and 700 ppm with inhibitory zone were 17.6 mm, 18.33 mm, and 19.66 mm, respectively. These results indicated that the lignin photodegradation for 700 ppm using FeO.TiO2 has produced activity with a strong inhibitory zone against Fusarium oxysporum and Xanthomonas sp.