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Kombinasi Teknik Pembentukan Kokristal dan Ball milling untuk Peningkatan Disolusi Etoricoxib Susanto, Sharon; Wikarsa, Saleh; Nugraha, Yuda Prasetya
Jurnal Ilmiah Medicamento Vol 10 No 1 (2024): Jurnal Ilmiah Medicamento
Publisher : Fakultas Farmasi Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36733/medicamento.v10i1.7561

Abstract

Etoricoxib (ETX) is a selective COX-2 anti-inflammatory drug classified in BCS class II. This study aims to enhance the dissolution rate of etoricoxib through a combination of co-crystal formation and ball milling conducted in-situ and ex-situ. Optimization was done by varying milling times and types of stabilizers, including Tween 80 (ETX-OXA-BM-T), Poloxamer 188 (ETX-OXA-BM-P), and a combination of Tween 80-sodium lauryl sulfate (SLS) (ETX-OXA-BM-T-S). In-situ experiments yielded a very low yield (<10%) and failed to produce co-crystals, thus deeming them unsuitable for continuation. Meanwhile, the ex-situ process showed more potential, leading to further evaluation using Differential Scanning Calorimetry (DSC), Powder X-Ray Diffractometry (PXRD), and Scanning Electron Microscope (SEM). DSC analysis showed endothermic peaks at 130°C for ETX and around 179 - 180°C for ETX-OXA and its derivatives. PXRD diffractograms for ETX-OXA and its derivatives exhibited similar peaks, differing from ETX. SEM analysis indicated that ETX-OXA-BM-T with 60 minutes of milling resulted in nanometer-sized particles, while the use of Poloxamer 188 and the combination of Tween 80-SLS produced particle sizes > 1 µm. ETX-OXA-BM-T showed the highest increase in solubility in all media. The dissolution results of ETX-OXA-BM-T showed improvement in phosphate buffer pH 6.8, while no significant differences were observed in pH 1.2 and 4.5 buffers. This study demonstrates that the combination of co-crystal formation and ex-situ ball milling is a potential approach to enhancing the dissolution rate of etoricoxib.
AKTIVITAS ANTIBAKTERI DARI FRAKSI DAUN KATUK HUTAN (Breynia cernua) ASAL PAPUA: ANTIBACTERIAL ACTIVITY OF FRACTION KATUK HUTAN LEAF (Breynia cernua) FROM PAPUA Ishariyanto, Riski; Dirgantara, Septriyanto; Susanto, Sharon; Septiana, Rita
JFL : Jurnal Farmasi Lampung Vol. 14 No. 1 (2025): JFL : Jurnal Farmasi Lampung
Publisher : Program Studi Farmasi-Fakultas Matematika dan Ilmu Pengetahuan Alam-Universitas Tulang Bawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37090/jfl.v14i1.2489

Abstract

Abstract Katuk hutan leaf (Breynia cernua) are endemic plants of Papua traditionally used to treat cancer, smallpox and wounds. It contains various bioactive compounds such as alkaloids, flavonoids, terpenoids and tannins. Fractionation using n-hexane, ethyl acetate and ethanol-water solvents was performed to isolate specific bioactive components. This study aims to evaluate the antibacterial activity of n-hexane fraction, ethyl acetate fraction and ethanol-water fraction of Breynia cernua leaf against Staphylococcus aureus and Escherichia coli. Antibacterial testing was conducted using the disc diffusion method at concentrations of 250, 500 and 750 ppm. All fractions exhibited inhibition zones in the moderate to strong category against both bacteria. The highest antibacterial activity was observed in the n-hexane fraction at 750 ppm with inhibition zone of 10.2 ± 0.8 mm for S. aureus and 10.3 ± 0.8 mm for E. coli. ANOVA analysis showed a significant difference (p < 0.05) between the n-hexane fraction and the other fractions. These results indicate that the n-hexane fraction of Breynia cernua leaves has the most potent antibacterial effect. Keywords:  Breynia cernua, disc diffusion, inhibition zone, Staphylococcus aureus, Escherichia coli.
Edukasi Kesehatan tentang Penggunaan Antibiotik secara Bijak pada Masyarakat Car Free Day Jakarta Christian, Yulius Evan; Gunawan, Untung; Laurensia; Chaineyla, Florencia; Alwi, Felisca Emmalyn; Susanto, Sharon
CARADDE: Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 1 (2025): Agustus
Publisher : Ilin Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31960/caradde.v8i1.3050

Abstract

The misuse of antibiotics remains a public health concern and contributes to the risk of antimicrobial resistance. To raise public awareness and knowledge about appropriate antibiotic use, an educational activity was conducted during the Car Free Day event in the Sudirman area of Jakarta. The education was delivered through direct counseling using leaflet media to participants aged 15 years and above. A total of 38 individuals took part in the activity and completed questionnaires before and after the session. The results showed an increase in the average knowledge score from 51.7 to 71.4. Statistical analysis using a paired t-test indicated a significant difference (p < 0.05), suggesting that the education had a positive impact on participants’ understanding. Furthermore, it was found that some members of the public still consume antibiotics without a doctor’s prescription. This activity demonstrates that public-space educational approaches can serve as a strategic effort to improve community understanding of rational antibiotic use.