NUGRAHA, NIZZAR NAZZAH (2025) FORMULASI DAN UJI AKTIVITAS ANTIBAKTERI FACE MIST EKSTRAK ETANOL DAUN BELIMBING WULUH (Averrhoa bilimbi L.) TERHADAP BAKTERI Propionibacterium acnes ATCC-6919. Sarjana thesis, UNIVERSITAS BAKTI TUNAS HUSADA.
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Abstract
Abstract Acne vulgaris is a common skin disorder, with one of its main causes being the bacterium Propionibacterium acnes. Treatment using natural ingredients with antibacterial activity has become an attractive alternative in topical cosmetic formulations. This study aims to formulate a face mist preparation containing ethanol extract of starfruit leaves ( Averrhoa bilimbi L.) and to evaluate its antibacterial activity against P. acnes ATCC-6919. Extraction was carried out by maceration using 96% ethanol. Antibacterial activity was tested in vitro using the well method diffusion against P. acnes, with six extract concentrations (5%, 10%, 15%, 20%, 25%, and 30%). The face mist was formulated in three extract concentrations (10%, 15%, and 20%) and evaluated for pH, homogeneity, drying time, spray pattern, hedonic acceptability, and physical stability. The results showed that the extract exhibited increased antibacterial activity with increasing concentration, with the highest inhibition zone of 10.73 ± 0.160 mm at 30%. The formulated face mist also demonstrated significant antibacterial activity, along with acceptable physical evaluation results. In conclusion, ethanol extract of Averrhoa bilimbi leaves can be formulated into a stable and effective face mist with antibacterial properties against P. acnes. Keywords: Acne, Propionibacterium acnes, Averrhoa bilimbi , face mist, antibacterial . abstrak Jerawat (acne vulgaris) merupakan gangguan kulit umum yang salah satu penyebab utamanya adalah bakteri Propionibacterium acnes. Penanganan jerawat menggunakan bahan alami dengan aktivitas antibakteri menjadi alternatif menarik dalam formulasi kosmetik topikal. Penelitian ini bertujuan untuk memformulasikan sediaan face mist yang mengandung ekstrak etanol daun belimbing wuluh (Averrhoa bilimbi L.) serta mengevaluasi aktivitas antibakterinya terhadap P. acnes ATCC-6919. Ekstraksi dilakukan dengan metode maserasi menggunakan etanol 96%. Uji aktivitas antibakteri dilakukan secara in vitro menggunakan metode difusi sumuran terhadap P. acnes, dengan enam variasi konsentrasi ekstrak (5%, 10%, 15%, 20%, 25%, dan 30%). Formulasi face mist dibuat dalam tiga konsentrasi ekstrak (10%, 15%, dan 20%) dan dievaluasi melalui uji pH, homogenitas, waktu kering, daya semprot, uji hedonik, serta stabilitas fisik. Hasil menunjukkan bahwa ekstrak daun belimbing wuluh memiliki aktivitas antibakteri yang meningkat seiring peningkatan konsentrasi, dengan zona hambat tertinggi 10,73 ± 0,160 mm pada konsentrasi 30%. Sediaan face mist juga menunjukkan aktivitas antibakteri signifikan serta memenuhi parameter evaluasi fisik. Kesimpulannya, ekstrak etanol daun belimbing wuluh dapat diformulasikan dalam bentuk face mist yang stabil dan efektif untuk menghambat P. acnes.
Item Type: | Thesis (Sarjana) |
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Subjects: | S1-Skripsi Farmasi |
Divisions: | Prodi Farmasi |
Depositing User: | S.Farm Nizzar Nazzah Nugraha |
Date Deposited: | 22 Sep 2025 08:09 |
Last Modified: | 22 Sep 2025 08:09 |
URI: | https://repository.universitas-bth.ac.id/id/eprint/5118 |
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