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 Fe 2+ 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 Fe 2+ ion at 5.6 mg/kg and the extract solution without light at 0.06 mg/kg.
CITATION STYLE
Rorong, J. A., Sudiarso, S., Prasetya, B., Polii-Mandang, J., & Suryanto, E. (2012). PHYTOCHEMICAL ANALYSIS OF ECENG GONDOK (Eichhornia crassipessolms) OF AGRICULTURAL WASTE AS BIOSENSITIZER FOR FERRI PHOTOREDUCTION. AGRIVITA Journal of Agricultural Science, 34(2). https://doi.org/10.17503/agrivita-2012-34-2-p152-160
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