ISOLASI DAN PENENTUAN STRUKTUR KANDUNGAN KIMIA EKSTRAK ETANOL KULIT BATANG JOHAR (CASSIA SIAMEA LAMK.)
Preliminary study of chemical content of the bark of "Johar" (Cassia siamea Lank., Caesalpiniaceae) showed the presence of alkaloid, flavonoid, tannin, quinone and steroid/ triterpenoid. Iron, magnesium, copper, zinc and calcium were found in the ash of the bark. Separation was done by liq...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/1374 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Preliminary study of chemical content of the bark of "Johar" (Cassia siamea Lank., Caesalpiniaceae) showed the presence of alkaloid, flavonoid, tannin, quinone and steroid/ triterpenoid. Iron, magnesium, copper, zinc and calcium were found in the ash of the bark. Separation was done by liquid-liquid extraction, vacuum liquid- and centrifugal thin layer chromatography. Four compounds were isolated from the ethanol extract and by mass spectrometry, nuclear magnetic resonance spectrometry and infrav red spectrophotonetry, were identified as 2,4-bis(dinethylbenzyl)-6-t-buthylphenol, chrysophanol, lupeol and taraxasterol. |
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