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All Journal EKSAKTA: Journal of Sciences and Data Analysis Pharmaciana: Jurnal Kefarmasian
Mustofa Ahda
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Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Materials Science & Nanotechnology Medicine & Pharmacology

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Ethanol Concentration Effect of Mangoesten Pell Extract to Total Phenol Content Mustofa Ahda
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 14, ISSUE 2, August 2014
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol14.iss2.art6

Abstract

Telah penelitian tentang pengaruh konsentrasi etanol terhadap kandungan fenol total pada kulit manggis. Penelitian ini bertujuan sebagai effisiensi penggunaan pelarut yang digunakan dalam proses ekstraksi. Proses ekstraksi yang digunakan dalam penelitian ini menggunakan teknik maserasi. Penelitian ini dengan melakukan variasi konsentrasi etanol 100%, 80%, 50%, 20%, 0% sebagai pelarut yang digunakan dalam proses maserasi selama 24 jam disertai dengan pengadukan. Kemudian hasil ekstrak cair dievaporasi sampai mendapat ekstraks kental, dan selanjutnya ekstraks kental diuapkan sampai memperoleh ekstraks kering masing-masing pelarut tersebut. Hasil penelitian menunjukkan bahwa konsentrasi etanol 100% mampu melakukan proses ekstraksi yang optimal dengan kandungan total fenol sebesar 35,21% b/b yang equivalen terhadap asam galat.
STUDI KINETIKA ADSORPSI Al-MCM 41 TERHADAP METILEN BIRU Mustofa Ahda; Sutarno Sutarno; Eko Sri Kunarti
Pharmaciana Vol 6, No 1 (2016): Pharmaciana
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (338.665 KB) | DOI: 10.12928/pharmaciana.v6i1.3290

Abstract

The synthesis and kinetics studies of Al-MCM 41 of the methylene blue adsorption have been done. The observations of the adsorption kinetics are very important parameter in the adsorption process. This is the higher of adsorption kinetics tend to faster adsorption process. The results of characterization of Al-MCM 41 have a wall thickness is 15.173 Å, Pore Volume Pore is 0.584 cm3/g, Pore Diameter is 30.446 Å, Surface Area is 995.513 m2/g. The results of the adsorption kinetics of Al-MCM 41 to  methylene blue adsorption follows pseudo second order with coefficient of determination (r2) value of 0.999 and the value of adsorption rate constant of Al-MCM 41 is 10-2 g.mg-1.min-1.
PENGARUH WAKTU HIDROTERMAL DAN TMAOH DALAM SINTESIS LANGSUNG MCM-41 Mustofa Ahda; Sutarno Sutarno; Eko Sri Kunarti
Pharmaciana Vol 5, No 1 (2015): Pharmaciana
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.473 KB) | DOI: 10.12928/pharmaciana.v5i1.2280

Abstract

The MCM-41processing synthesis with variation time hydrothermal and TMAOH at directsynthesis process has been done. The synthesis of MCM–41 was used templating agents withcetiltrimetilammonium bromide (CTAB). The optimization of synthesis of MCM-41 was carried outto produce good material characteristics. Hydrothermal time variation performed in the synthesis ofMCM-41 for 18 hours, 24 hours, 48 hours and 88 hours has been done. So the study of effect TMAOHwas used CTAB/ TMAOH ratio: 1 and 1.25. The results showed that the 24- hour time hydrothermalwas able to produce the good crystallinity with 100% relative crystallinity. However, the best stabilityof MCM-41 materials synthesized in hydrothermal time during the 48 hours. So the effect ofTMAOH additions in the synthesis MCM-41 can bedecreased crystallinity of MCM-41.
Co-Authors Eko Sri Kunarti Holyness Nurdin Singadimedja