PENGARUH WAKTU PENGERINGAN TERHADAP KADAR TANIN DAUN JATI BELANDA (Guazuma ulmifolia Lamk.)

Katno Katno, Awal Prichatin Kusumadewi, Sutjipto Sutjipto

PENGARUH WAKTU PENGERINGAN TERHADAP KADAR TANIN DAUN JATI BELANDA (Guazuma ulmifolia Lamk.)

Abstract


The study of drying period to tannin content on Guazuma ulmifolia Lamk. was conduted to asses the optimal perod of drying as well as the maximum tannin content on the raw material. Both sun and oven drying are commonly applied in post harvest handling, but this study used only oven-dried (400C) for the following time: 6, 7, 8 hours. The tannin content was determined by spectrophotometry UV­-Vis (Folin Dennis and saturated Natrium Carbonat). Qualitative assessment analyzed by colour and sedimentation reaction. The qualitative analysis result showed that H2SO4 changed into brown, HCl changed into greenish yellow, FeCl3 changed into blackish blue, and albumin solution and gelatin induced a sediment. Quantitative analysis result showed that on 6 hours treatment (0.4833 ± 0.0254)% w/w, on 7 hours (0.5684  + 0.0096)% w/w and on 8 hours (0.6440 ± 0.0184)% w/w.

Data were analyzed by one way ANOVA followed by T-Test. It was concluded that the periodof drying influenced the tannin content of Guazuma ulmifolia. The high­ est tannin content was shown by the 8 hours treatment.

 

Keyword: drying period, tannin content, Guazuma ulmifolia, Spectrofotometry UV-Vis.


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Jurnal Tumbuhan Obat Indonesia (Journal of  Indonesian Medicinal Plant, p-ISSN : 1979-892X, e-ISSN : 2354-8797) is published by Balai Besar Penelitian dan Pengembangan Tanaman Obat dan Obat Tradisional (B2P2TOOT) Tawangmangu.

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