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All Journal Borneo Journal of Pharmacy Kartika : Jurnal Ilmiah Farmasi
Nur Achsan Al-Hakim
Universitas Jenderal Achmad Yani
Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences

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Solubility and Scale-Up Potency of Norfloxacin-Urea Co-Crystal Prepared by Ultrasound-Assisted Slurry Co-Crystallization Method Fikri Alatas; Dery Stiawan; Nur Achsan Al-Hakim
Borneo Journal of Pharmacy Vol. 6 No. 2 (2023): Borneo Journal of Pharmacy
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/bjop.v6i2.4173

Abstract

Norfloxacin is an antimicrobial in treating urinary tract infections with low water solubility. This study aims to know the effect of norfloxacin-urea co-crystal formation on the solubility of norfloxacin and the potential for scale-up when prepared by ultrasound-assisted slurry co-crystallization method. Identification of the screening result of the norfloxacin-urea (1 : 1) co-crystal formation by a wet grinding method using an ethanol-acetone (1 : 1) solvent mixture was performed by powder X-ray diffractometer (PXRD). The ultrasound-assisted slurry co-crystallization method was used for co-crystal formation with five-fold the weight of norfloxacin and urea than the wet grinding method. The co-crystal product prepared by the ultrasound-assisted slurry co-crystallization method was observed for its crystal morphology and characterized by PXRD and differential scanning calorimeter (DSC). Solubility and dissolution tests in water and acetate buffer solution pH 4.0 were used to evaluate the physicochemical properties. Identification of co-crystal screening by PXRD revealed the formation of norfloxacin-urea co-crystal. The PXRD pattern of the norfloxacin-urea co-crystal product prepared by the ultrasound-assisted slurry co-crystallization method was similar to the wet grinding method. Norfloxacin-urea co-crystal has a different melting point and crystal morphology from pure norfloxacin and urea. The solubility and dissolution rate of norfloxacin-urea co-crystal was higher in water and not significantly different in acetate buffer solution pH 4.0 compared to pure norfloxacin. This study showed that the norfloxacin-urea co-crystal formation could enhance the solubility of norfloxacin in water and had the potential for scale-up when prepared using the ultrasound-assisted slurry co-crystallization method.
PEMANFAATAN EKSTRAK DAUN TEH HIJAU (Camellia sinensis L) SEBAGAI BAHAN AKTIF PEMBUATAN SEDIAAN KRIM TABIR SURYA Titta Hartyana Sutarna; Fikri Alatas; Nur Achsan Al Hakim
Kartika : Jurnal Ilmiah Farmasi Vol 4 No 2 (2016)
Publisher : Fakultas Farmasi Universitas Jenderal Achmad Yani, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/kjif.v4i2.64

Abstract

ABSTRACTSenyawa yang mampu menghambat oksidasi molekul lain adalah senyawa antioksidan. Daun teh hijau dikenal sebagai tanaman yang mengandung senyawa katekin. Senyawa katekin  diketahui merupakan antioksidan. Dari penelitian yang dilakukan, daun teh hijau diketahui memiliki IC50 sebesar 3,17µg/mL. Penelitian ini ditujukan untuk memanfaatkan daun teh hijau sebagai zat aktif dalam sediaan krim antioksidan. Dibuat 4 Formulasi sediaan krim antioksidan yaitu F0 yang berisi basis krim tanpa ekstrak daun teh hijau dan F1, F2 serta F3 yang masing-masing berisi 0,5%; 1% dan 5%. Evaluasi sediaan meliputi pemeriksaan organoleptis, pengukuran pH, viskositas dan stabilitas antioksidan selama penyimpanan 28 hari. Hasil menunjukkan baik F0, F1, F2 maupun F3 tidak mengalami perubahan secara organoleptis, pengukuran pH dan viskositas dapat dikatakan stabil. Hasil pengukuran persen peredaman pada formulasi F0, F1,F2 dan F3 pada hari ke 28 menunjukkan nilai persen peredaman masing-masing yaitu 50,44%; 88,92%; 92,86%; 94,46%.  Kata Kunci: Camellia sinensis L, Ekstrak daun Teh Hijau, krim, antioksidan.
Co-Authors Dery Stiawan Fikri Alatas Titta Hartyana Sutarna Titta Hartyana Sutarna, Titta Hartyana