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All Journal Indonesian Journal of Pharmaceutical Science and Technology AGRITEKNO, Jurnal Teknologi Pertanian Spizaetus: Jurnal Biologi dan Pendidikan Biologi
Laynurak, Yoseph M
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Immunology & microbiology Medicine & Pharmacology Other

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Potensi Aktivitas Antibakteri Kombucha Kulit Batang Faloak (Sterculia quadrifida R.Br.) dari Pulau Timor Lalong, Paulus R F; Laynurak, Yoseph M; Taek, Maximus M
AGRITEKNO: Jurnal Teknologi Pertanian Vol 12 No 2 (2023): AGRITEKNO: Jurnal Teknologi Pertanian
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jagritekno.2023.12.2.90

Abstract

Exploration of the potential of alternative ingredients to replace black tea or green tea in making kombucha has begun to be widely carried out. On Timor Island, faloak stem bark is processed into a traditional drink by some locals. For this reason, the use of faloak stem bark as a basic ingredient for kombucha needs to be studied, especially in exploring its antibacterial potential, which is analyzed based on the concentration of sugar used. This study aims to determine the chemical characteristics and antibacterial activity of faloak stem bark kombucha with various concentrations of sugar. The methods involved making faloak stem bark kombucha with varying sugar concentrations of 6, 8, 10, and 12% (w/v), and testing chemical characteristics in the form of pH, total acid, total sugar, and total phenol tests. Meanwhile, the antibacterial activity testing used a good diffusion method against Escherichia coli ATCC 25922 bacteria. After 14 days of fermentation, faloak stem bark kombucha with a 12% sugar concentration showed the best chemical characteristics, with pH, total acid, total sugar, and total phenol values of 2.91, 1.19%, 7.33%, and 420.15 mg GAE/L, respectively. Furthermore, antibacterial activity also showed the highest inhibition (13.02 mm) at a sugar concentration of 12%. Thus, faloak bark kombucha made with a sugar concentration of 12% has the potential to be antibacterial.
Functional beverage formulation of faloak (Sterculia quadrifida R.Br) stem bark kombucha with the addition of lontar palm sugar Lalong, Paulus Risan F; Naben, Maria Novalina; Laynurak, Yoseph M
Indonesian Journal of Pharmaceutical Science and Technology Vol 12, No 1 (2025)
Publisher : Indonesian Journal of Pharmaceutical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/ijpst.v12i1.52821

Abstract

Local potential and alternative substrates have been widely utilized to make kombucha with the aim of increasing its compound content and potential functional properties. In general, kombucha is made of black or green tea fermented using white cane sugar. On the other hand, the making of kombucha using faloak (Sterculia quadrifida R.Br) stem bark fermented using lontar palm sugar is relatively new. Therefore, the development of the optimum formula needs to be explored to confirm its functional properties. This study aims to determine the optimum formulation of lontar palm sugar concentration and fermentation time in terms of the chemical characteristics and antioxidant activity of faloak stem bark kombucha. The Response Surface Methodology (RSM) was employed in this study with two research factors, i.e., lontar palm sugar concentration and fermentation time. The results reveal the optimum formulation of palm sugar concentration of 15% and fermentation time of 15.18 days which can cause significant changes in properties, showing pH value of 2.72, total acid of 1.264%, total sugar of 6.451%, total phenol of 452.783 mg GAE/L, and antioxidant activity (IC50 value) of 70.877 ppm. In conclusion, the use of 15% lontar palm sugar fermented for 15.18 days can produce faloak stem bark kombucha with potential as a functional beverage.
Keanekaragaman Pohon Riparian di Beberapa Mata Air Desa Soba Kabupaten Kupang Bano, Emiliana Eka; Laynurak, Yoseph M; Semiun, Chatarina Gradict; Mamulak, Yulita Iryani
Spizaetus: Jurnal Biologi dan Pendidikan Biologi Vol 4 No 3 (2023): Spizaetus: Jurnal Biologi dan Pendidikan Biologi
Publisher : Program Studi Pendidikan Biologi, FKIP, Universitas Nusa Nipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55241/spibio.v4i3.281

Abstract

Vegetasi pohon riparian merupakan salah satu komposisi penyususun ekosistem riparian yang memiliki peranan vital dalam menjaga keanekaragaman hayati. Pohon riparian dapat ditemukan di sekitar sumber mata air. Tujuan penelitian ini untuk  mengetahui keanekaragaman vegetasi pohon riparian di mata air desa Soba kecamatan Amarasi Barat kabupaten Kupang. Metode yang di gunakan adalah Point-Quarter, dengan penarikan transek menjadi empat kuadran pengamatan. Di setiap kuadran dicatat jenis dan jumlah pohon, kemudian dilakukan pengukuran terhadap tinggi, diameter dan stratifikasi pohon, dan indeks lingkungan (Indeks Naturalness dan Indeks Hemeroby). Data yang di peroleh di analisis untuk memperoleh Indeks Kekayaan Jenis Margalef, Indeks Nilai Penting, dan Indeks Keankeragaman Shanon-Wiener. Hasil penelitian ditemukan 16 jenis pohon riparian dari 11 famili meliputi Euphorbiaceae, Arecaceae, Fabaceae, Myrtaceae, Annonaceae, Meliaceae, Menispermaceae, Moraceae, Malvaceae, Verbenaceae, dan Anacardiaceae. Famili Arecaceae merupakan jenis pohon riparian yang paling sering dijumpai. INP tertinggi mata air Oe Kou  dan Oe Kiu ditemukan pada pohon pinang (Areca sp.), dan mata air Oras pada pohon Kananga (Cananga odorata). Keanekaragaman vegetasi pohon riparian pada ketiga mata air desa Soba tergolong buruk dan sangat buruk, sedangkan  kekayaan jenis tergolong rendah sampai sedang.
Co-Authors Bano, Emiliana Eka Chatarina Gradict Semiun Lalong, Paulus Risan F. Naben, Maria Novalina Taek, Maximus M Yulita Iryani Mamulak