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The Influence of Activated Carbon Produced from Duck Eggshells as an Adsorbent for Free Fatty Acid Content of Used Cooking Oilc Aritonang, Barita; Ritonga, Ahmad Hafizullah; Harefa, Karnirius; Herlina, Herlina; Wiratma, Dicky Yuswardi
Jurnal FARMASIMED (JFM) Vol 8 No 2 (2026): Jurnal Farmasimed (JFM)
Publisher : Fakultas Farmasi Institut Kesehatan Medistra Lubuk Pakam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35451/r6vzyw08

Abstract

The repeated use of cooking oil can lead to a decline in oil quality and an increase in free fatty acid (FFA) levels, which may pose adverse health effects when consumed continuously. Therefore, an effective, safe, and sustainable purification method is required to improve the quality of used cooking oil. This study aims to evaluate the effectiveness of activated carbon derived from duck eggshell waste in reducing FFA levels in used cooking oil. The research employed a laboratory experimental method with a post-test only control group design. Samples of used cooking oil were selected purposively based on a level of degradation representative of real conditions. The preparation of activated carbon began with the carbonisation of duck eggshells, followed by chemical activation using a 3 M phosphoric acid (H₃PO₄) solution to enhance surface area and adsorbent porosity. The resulting activated carbon was then applied in the adsorption process of used cooking oil. FFA levels were analysed using the alkalimetric titration method. The results showed that the activated carbon significantly reduced FFA levels from 1.57% to 0.22%, with a reduction efficiency of 75%. This final value complies with the quality standard for cooking oil according to SNI 3741:2013 (≤0.3%). Furthermore, the produced activated carbon exhibited favourable characteristics, as indicated by a high iodine adsorption capacity and well-developed pore structure. In conclusion, activated carbon derived from duck eggshells is effective as an adsorbent for reducing FFA levels in used cooking oil and shows strong potential as an environmentally friendly and economically valuable solution.
UJI AKTIVITAS EKSTRAK ETANOL BUAH LUWINGAN (Ficus hispida L.f) SEBAGAI ANTIDIABETES PADA TIKUS PUTIH JANTAN GALUR WISTAR Wiratma, Dicky Yuswardi; Yudhistira, Yudhistira; Marpaung, Jon Kenedy
Jurnal Farmanesia Vol 12 No 1 (2025): Jurnal Farmanesia
Publisher : UNIVERSITAS SARI MUTIARA INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Latar belakang: Pengetahuan tentang tumbuhan obat merupakan budaya bangsa yang diwariskan secara turun temurun. Obat tradisional dalam bahan kimia alam mengandung senyawa-senyawa yang dikenal dengan metabolit sekunder. Senyawa-senyawa metabolit sekunder tersebut memiliki khasiat yang berbeda-beda, sehingga mendorong pentingnya penggalian sumber obat-obat tradisional dari bahan alam salah satunya dari tanaman Luwingan (Ficus hispida L.f). Tujuan: Untuk mengetahui apakah buah Luwingan (Ficus hispida L.f) memiliki aktivitas serta berapa konsentrasi yang efektif sebagai antidiabetes. Metode: Buah luwingan akan diekstraksi dengan menggunakan pelarut etanol. Menggunakan metode eksperimental dengan desain penelitian purposive sampling. Tikus di induksi aloksn dengan dosis 150mg kg/BB secara intraperitoneal. Sampel darah diukur dengan strip tes darah gluco Dr dan hasil kadar glukosa darah dianalisis dengan one way ANOVA. Hasil: Hasil uji pemberian ekstrak etanol buah luwingan (Ficus hispida L.f) memiliki aktivitas antidiabetes pada tikus putih jantan galur wistar yang di induksi aloksan dengan variasi konsentrasi 20% dapat menurunkan KGD 240,8 mg/dL, 40% menurunkan KGD 246 mg/dL dan 60% menurunkan KGD 248,4 mg/dL. Simpulan: Ekstrak etanol buah luwingan dapat menjadi alternatif terapi karena efektivitasnya dalam menurunkan kadar gula darah. Konsentrasi 60% memiliki aktivitas penurunan kadar glukosa darah yang paling baik jika dibandingkan dengan 3 konsentrasi yang di uji. Ekstrak etanol buah luwingan ini memiliki efektivitas yang mendekati glibenklamid sebagai kontrol positif.