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All Journal PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman Science and Technology Indonesia JURNAL ATOMIK PRIMER: Jurnal Ilmiah Multidisiplin al Kimiya : Jurnal Ilmu Kimia dan Terapan Journal of Science and Technology: Alpha
Djihan Ryn Pratiwi, Djihan Ryn
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
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SELEKSI AMILASE PENDEGRADASI PATI MENTAH BAKTERI DARI AIR GALIAN BEKAS TAMBANG BATU BARA DI DESA LOA BAHU Akbar, Akbar; Astuti, Winni; Pratiwi, Djihan Ryn
JURNAL ATOMIK Vol 10 No 2 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i2.1546

Abstract

Raw starch-degrading amylase (RSDA) is a type of hydrolase enzyme that can degrade raw starch into glucose without going through the heating and gelatinization process. This study was conducted to select RSDA-producing bacteria from ex-coal mine water samples in Loa Bahu Village, Sungai Kunjang, Samarinda, with various types of raw starch such as rice, wheat, corn, potatoes, sago, and cassava. The selection of bacteria-producing RSDA enzymes was carried out using agar nutrient media containing raw starch, the positive test was marked by the formation of a clear zone around the bacterial colony after the addition of iodine solution. A total of 13 bacterial isolates (AT 1 - AT 13) were tested qualitatively by RSDA. The selection results showed that 4 bacterial isolates were capable of degrading raw rice starch, 4 bacterial isolates were capable of degrading raw corn starch, 2 bacterial isolate was capable of degrading raw cassava starch, 1 bacterial isolate was capable of degrading raw potato starch, 1 isolate was capable of degrading raw wheat starch, and 2 bacterial isolates were able to degrade raw sago starch. The bacterial isolate with the code AT3 is capable of degrading raw starch of rice, corn, potatoes, wheat and sago.
Co-Authors Akbar Akbar Akkas, Erwin Ami, Suyatmi Anita Karolina, Anita Aris Munandar Aristina, Reza Fauziah Cahyani, Amelya Putri Chairul Saleh Daniel Dewi, Dynda Rosiana Erwin Erwin Eva Marliana, Eva Haeruddin Haeruddin Hairani, Rita Hermawan Hermawan Ilham, Muhammad Hafid Indra Masmur Lianasari, Ika Yekti Magdaleni, Agustina Rahayu Masmur, Hestina Maulina, Sheli Nanang Tri Widodo Putri, Amanda Aulia Rabiatul Adawiyah Ritson Purba, Ritson Ruga, Ritbey Saibun Sitorus Sari, Ika Yekti Liana Soerja Koesnarpadi Subur P Pasaribu Sumarni, Feni Sya'bani, Nurillah Teguh Wirawan, Teguh Usdin, Muhammad Sadam Vera, Hendrica Mini Winni Astuti Winni Astuti, Winni