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Uji Aktivitas Antijamur Nanopartikel Zink Oksida (ZnO) Ekstrak Kulit Jengkol terhadap Candida Albicans Ica Dwi Patricia; Vera Estefania Kaban; Astriani Natalia Br Ginting
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 1 (2026): Februari 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i1.7539

Abstract

Natural materials are increasingly being used as sources of bioactive chemicals due to increased concerns about safety, sustainability, and environmental effect. Jengkol peel is one such natural material with potential because it contains various secondary metabolites compounds that have biological activity. On the other hand, Candida albicans fungal infections remain a health problem, while conventional antifungal options are limited and have the potential to cause side effects. Zinc oxide (ZnO) nanoparticles are known to have broad antimicrobial activity, and their synthesis can be carried out in an environmentally friendly manner through a green synthesis approach using natural materials. This study aims to test the antifungal activity of ZnO nanoparticles synthesized using jengkol peel extract against Candida albicans. The study was conducted experimentally. Antifungal activity was tested using the well diffusion method with various concentrations of ZnO nanoparticles. The results showed the formation of an inhibition zone around the well, indicating the antifungal activity of ZnO nanoparticles. The increase in ZnO nanoparticle concentration is directly proportional to the increase in inhibition zone diameter, with the highest inhibition of 14 mm categorized as moderate activity. This study proves that jengkol-based ZnO nanoparticles have the potential to be developed as an environmentally friendly alternative antifungal agent.
Potensi Aktivitas Antibakteri Antara Ekstrak dan Fraksi Kulit Jeruk Terhadap Ulkus Diabetes Farren Farren; Rena Meutia; Astriani Natalia Br Ginting; Asyrun Alkhairi Lubis
Jurnal Kesehatan Amanah Vol. 9 No. 1 (2025): Jurnal Kesehatan Amanah
Publisher : Universitas Muhammadiyah Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57214/jka.v9i1.765

Abstract

Diabetic ulcers, a chronic complication of diabetes mellitus, result from long-term uncontrolled blood sugar levels and are characterised by infection-prone foot wounds. Staphylococcus aureus is often found as the bacteria that cause infection in these wounds. Antibiotic resistance has become a serious challenge in medicine, so alternatives such as orange peel (Citrus sinensis (L.) Osbeck) were investigated for their metabolite content with antibacterial potential. This study was designed experimentally with a Posttest Only Control Group Design approach. Orange peels were processed through sorting, drying, extraction using 96% ethanol, and fractionation with ethyl acetate. Antibacterial activity test was conducted by disc method against Staphylococcus aureus, using ethanol extract and ethyl acetate fraction. DMSO and mupirocin were used as negative and positive controls, with concentrations of 25%, 50%, and 75%. The results showed that the ethanol extract had antibacterial activity, with a concentration of 75% producing the largest inhibition zone (13.56 mm), including the medium category. However, the ethyl acetate fraction did not show antibacterial activity at all concentrations, presumably due to the low levels of extractable semipolar metabolites. Environmental factors such as UV light, humidity, and high temperature during drying are also thought to affect metabolite levels. It was concluded that ethanol extract of orange peel was more effective than ethyl acetate fraction in inhibiting the growth of Staphylococcus aureus.