Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
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@article{JKSA17589, author = {Choirulina Maulida and Dewi Kusrini and Enny Fachriyah}, title = {Isolasi, Identifikasi serta Uji Aktivitas Sitotoksik Senyawa Alkaloid Total Daun Ketapang (Terminalia Catappa Linn.) dengan Metode Brine Shrimp Lethality Test (BSLT)}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {15}, number = {1}, year = {2012}, keywords = {Terminalia catappa Lin.; alkaloid; uji aktivitas; BSLT}, abstract = {Isolasi senyawa alkaloid pada daun T. catappa yang merupakan tumbuhan famili combretaceae telah dilakukan. Isolasi alkaloid dilakukan dengan metode maserasi menggunakan pelarut n-heksana dilanjutkan dengan etanol. Ekstrak etanol diidentifikasi menggunakan pereaksi dragendorf dan meyer, diikuti dengan hidrolisis ekstrak etanol. Kemudian dilakukan ekstraksi cair-cair menggunakan pelarut etil asetat dan menghasilkan isolat alkaloid total. Analisis isolat alkaloid dilakukan dengan metode KLT dan pemisahan dengan KLT preparatif. Lalu, dilanjutkan dengan analisis menggunakan UV-Vis, FTIR dan LC-MS serta uji sitotoksik dengan metode BSLT. Isolat alkaloid dari daun T. catappa berupa serbuk berwarna putih. Analisis spektrofotometer UV-Vis menunjukkan bahwa isolat A1.1 dan A2.1 mempunyai λmax sebesar 220 nm. Sedangkan spektra FTIR menunjukkan bahwa masing-masing isolat memiliki bilangan gelombang 3441,01; 3425,58 cm -1 (vibrasi ulur O-H), 2924,09 dan 2854,65 cm -1 (vibrasi ulur C-H asimetri dan simetri), 1627,92 cm -1 (vibrasi ulur C=O), 1103,28 cm -1 (vibrasi ulur C-O yang simetri dengan vibrasi ulur C-N). Hasil LC-MS menunjukkan senyawa mempunyai berat molekul sebesar 337,34 g/mol (A1.1) dan 337,33 g/mol (A2.1). Senyawa tersebut diduga merupakan senyawa alkaloid tropane dengan gugus α, β asam tak jenuh dan isomernya. Uji sitotoksik menggunakan metode BSLT menunjukkan bahwa alkaloid total mempunyai harga LC 50 sebesar 132,590 ppm yang berarti alkaloid total bersifat tidak toksik.}, issn = {2597-9914}, pages = {13--17} doi = {10.14710/jksa.15.1.13-17}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/17589} }
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