Septina A , Yosefine (2005) Identifikasi dan uji toksisitas asam tanat dalam ekstrak daun ketapang (Terminalia catappa L). Undergraduate thesis, FMIPA UNDIP.
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Abstract
Tanin terhidrolisis seiama ini telah diketahui mempunyai berbagai manfaat clam bidang farmasi. Salah satu jenis tanin terhidrolisis yang cukup bermanfaat a di. ah asam tanat. Telah dilakukan penelitian sebelumnya yang menunjukkan b wa asam tanat mempunyai aktivitas sebagai antikanker. Tanaman Ketapang ( erminalia catappa L.) sudah sejak dulu diketahui sebagai tanaman yang emiliki berbagai khasiat pengobatan dan termasuk dalam golongan tanaman g mengandung tanin terhidrolisis. Namun penelitian terhadap tanin t 4 rhidrolisis yang berupa asam tanat dalam tanaman tersebut belum pernah lakukan. Penelitian ini bertujuan untuk mengidentifikasi asam tanat dalam e strak daun Ketapang dan membandingkan toksisitas asam tanat dalam ekstrak engan asam tanat standar. Tahap pertama dalam penelitian ini adalah pemisahan dan identifikasi tanat. Pemisahan senyawa dilakukan melalui metode soklet dengan pelarut IeL -heksana dan dilanjutkan dengan pelarut aseton-air (7:3). Identifikasi asam tanat eliputi uji golongan kimia, analisa dengan KLT dan HPLC. Toksisitas asam at yang terdapat dalam ekstrak dan asam tanat standar diuji menggunakan tode Brine Shrimp Lethality Test dan hasilnya diolah menggunakan program inney Computer untuk mendapatkan harga LC50. Berdasarkan basil analisa KLT dan HPLC diketahui bahwa ekstrak aseton- a: mengandung asam tanat. Dan hasil uji toksisitas diketahui harga LC50 ekstrak seton-air sebesar 15,42435 ppm dan asam tanat standar sebesar 26,71531 ppm. erdasarkan harga LC50 tersebut diketahui bahwa asam tanat dalam ekstrak seton-air kWh toksik daripada asam tanat standar Hydrolyzable tanners have been known having various benefit in the field f pharmacy. One type of hydrolyzable tannins which is useful enough is tannic I - apid. A previous research has indicated that tannic acid has activity as anticancer a! ent. Ketapang trees (Terminalia catappa L.) have known since long time as lants owning various medication ability and included in plant faction containing drolyzable tannins. However researchs of hydrolyzable tannins which specially n tannic acid in that plant have not been done. This research is aimed to identify c acid in extract of Ketapang leaves and to compare the toxicity of tannic acid in extract with standard tannic acid. First step in this research was separation and identification of tannic acid. Compound separation had been done through soxlilet method with n-hexane solvent and continued with aceton-water (7:3). Identification of tannic acid had lit een done by analysis with chemical faction test, TLC and HPLC. At the second s ep, toxicity of tannic acid in extract and standard tannic acid had been tested by rine Shrimp Lethality Test method and the result was analyzed using Finney =puler program to get LC50 value. From the result of analysis with TLC and HPLC have known that acetone ater extract contains tannic acid. By Brine Shrimp Lethality Test and Finney ti ethod have known LC50 value. It was 15.42435 ppm for acetone-water extract d 26.71531 ppm for standard tannic acid. It shows that tannic acid is more t• xic in acetone-water extract than standard tannic acid.
Item Type: | Thesis (Undergraduate) |
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Subjects: | Q Science > QD Chemistry |
Divisions: | Faculty of Science and Mathematics > Department of Chemistry |
ID Code: | 31095 |
Deposited By: | Mr UPT Perpus 1 |
Deposited On: | 14 Nov 2011 15:11 |
Last Modified: | 14 Nov 2011 15:11 |
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