%0 Journal Article %T PHYTOCHEMICAL ANALYSIS OF WATER HYACINTH (Eichhornia crassipes) OF AGRICULTURAL WASTE AS BIOSENSITIZER FOR FERRI PHOTOREDUCTION %A Johnly Alfreds Rorong %A Sudiarso %A Budi Prasetya %A Jeany Polii-Mandang %J Agrivita : Journal of Agricultural Science %D 2012 %I University of Brawijaya %X Analysis of the phenolics, flavonoids and tannins compounds has been done on water hyacinth leaves (Eichornia crassipessolms). The research was carried out in several stages, including: sample preparation, maceration extraction, and evaporation. The total phenolics constituted analysis by folin ciocalteu 50%, flavonoidss by using aluminium chloride 2% in ethanol, and tannins by using vanillin 4% solution in methanol, continued by using ultra violet visible spectrophotometry (UV-Vis) methods. The analysis showed that the phenolics content of water hyacinth with methanol 60% equal to gallic acid 2.72 mg/kg is the highest phenolics content, and the lowest phenolics by distilled water equal to gallic acid 1.07 mg/kg and the flavonoids with methanol 80% equal to 3.29 mg quercetin/kg is the highest flavonoids content, and the lowest by the distilled water of quercetin 1.65 mg /kg and the highest condensed tannins content by methanol 80% of 0.7 mg/kg catechin . The Fe2+ content process with methanol 60% solution was 17.67 mg/kg, and with distilled water was 2.94 mg/kg. Solution without extract as sensitizer produced only Fe2+ ion at 5.6 mg/kg and the extract solution without light at 0.06 mg/kg %K phytochemical %K agricultural waste %K water hyacinth %K biosensitizer %K ferric photoreduction %U http://agrivita.ub.ac.id/index.php/agrivita/article/view/106