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All Journal Jurnal Biologi Tropis Jurnal Teknik Sipil Institut Teknologi Padang
Pratiwi, Yani
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Engineering Immunology & microbiology Transportation

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Formulation and Evaluation of Red Betel Leaf (Piper crocatum L) Ethanol Extract 96% in Anti-Acne Cream Pratiwi, Yani; Azis, Asyari Al Hutama; Dilla, Nurfarah
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9570

Abstract

Acne (Acne vulgaris) is a common skin problem experienced, especially by teenagers and young adults, which can lower self-esteem. One causes is bacteria Propionibacterium acnes and Staphylococcus epidermidis. Red betel leaves (Piper crocatum L) are known to contain active compounds such as flavonoid, tannins, alkaloid, and essential oil that effective as antibacterial and anti-inflammatory agents. The aim of this study is to formulate and evaluate a topical cream containing a 96% ethanol extract of red betel leaves (Piper crocatum L.) as an anti-acne preparation. This study employed a laboratory experimental approach, formulating an oil-in-water (O/W) type cream by varying the concentrations of the emulsifiers stearic acid and triethanolamine (TEA). The physical properties of the cream were assessed through organoleptic evaluation, homogeneity testing, pH measurement, spreadability, adhesion, viscosity, cream type identification, and mechanical stability testing. The results that formula IV with an extract concentration of 12.5%, stearic acid 17%, and TEA 3.5% produces the most optimal results, with stable physical characteristics, homogeneous, and meeting topical cosmetic standards. Thus, 96% ethanol extract cream of red betel leaf has potential to be used as alternative treatment for acne based on natural ingredients.
Penilaian Kelayakan Struktur Gedung Kuliah Sekolah Tinggi Teknologi Payakumbuh Masdar, Astuti; Pratiwi, Yani; Masdar, Anita Dewi; Noviarti
Jurnal Teknik Sipil Institut Teknologi Padang Vol 11 No 2 (2024): Jurnal Teknik Sipil institut Teknologi Padang
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jts.2024.V1102.0138-143

Abstract

Asesmen dilakukan sebelum renovasi dilaksanakan terhadap salah satu bangunan di Sekolah Tinggi Teknologi Payakumbuh yang berfungsi sebagai gedung perkuliahan. Asesmen sangat penting dilakukan mengingat bangunan merupakan gedung Sekolah Dasar (SD) hibah dari Pemerintahan Kota Payakumbuh, yang telah dibangun sejak tahun 1984. Metode yang dilakukan dalam penelitian adalah metode kuantitatif melalui asesmen secara visual dan teknikal serta analisis kapasitas penampang pada kondisi eksisting. Berdasarkan hasil asesmen secara visual diketahui kerusakan pada kolom berupa void, spalling dan korosi pada tulangan kolom dan pelat di bagian belakang bangunan serta retak halus pada dinding.  Sementara itu dari hasil asesmen secara teknikal dengan Hammer Test diketahui kuat tekan rata-rata untuk komponen struktur kolom adalah fc’ = 18,7 MPa, balok dan pelat adalah fc’ = 16,7 MPa. Hasil analisis kapasitas bangunan menunjukkan bahwa kondisi eksisting mempunyai kapasitas yang melebihi beban ulitimit sehingga renovasi dengan penggantian granit pada lantai dan bahan yang cukup berat untuk keperluan arsitektur masih dapat dilaksanakan.
Co-Authors astuti masdar, astuti Azis, Asyari Al Hutama Dilla, Nurfarah Khamdanah, Khamdanah Masdar, Anita Dewi Nada, Luthfia Qothrun Noviarti Sabrina, Fadya Putri