| dc.description.abstract | ABSTRACT. Improvement of oil palm plantation results in increased palm oil :'oduction, Empty fruit bunches (EFB) are oil paim solid waste containing ,';)celluloses, In this study, the use of lignin content of EFB as antioXIdant was assessed, Delignification of EFB was done by using ethanol In an organosolv pulping -~:"od, Antioxidative activity of lignin was characterIZed by using 1,1,diphenyl,2, : :'Y'nydrazyl (DPPH), measured as ICso (inhibition rate of 50%), Results of Infrared :;e~rum analysIs of EFB organosolv lignin showed a specific absorption of lignin ::-,oound, Hydroxyphenolic content was found to be 0.4% and lignin molecular .~ gOt was 4005 g!mol. The ICse was 502 ppm and iCso of the butylated '. :';)Wtoluene as a control was 1883 ppm. This fact shows tnat H8 pf organosolv " -'S a potential antioxidant. | en |
