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All Journal JURNAL ATOMIK MUKADIMAH: Jurnal Pendidikan, Sejarah, dan Ilmu-ilmu Sosial Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat al Kimiya : Jurnal Ilmu Kimia dan Terapan
Putri, Amanda Aulia
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Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Languange, Linguistic, Communication & Media Social Sciences

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AKTIVITAS AMILASE PENDEGRADASI PATI MENTAH DARI BAKTERI TANAH TEMPAT PEMBUANGAN AKHIR BUKIT PINANG Putri, Amanda Aulia; Astuti, Winni; Pratiwi, Djihan Ryn
JURNAL ATOMIK Vol 9 No 2 (2024)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v9i2.1408

Abstract

Raw starch-degrading amylase (RSDA) is a hydrolytic enzyme that can degrade raw starch into glucose. This study was conducted to obtain raw starch-degrading amylase-producing bacteria from the soil of the Bukit Pinang Landfill, Samarinda City. Isolation of bacteria using the spread plate method. Screening of RSDA-producing bacteria using nutrient media to contain raw starch. Isolation of bacteria obtained 10 single colonies of bacteria. The isolated bacteria were selected for their ability to produce RSDA. All single colonies of bacteria could produce RSDA and their activity was tested quantitatively using the 3,5 Dinitrosalicylic Acid (DNS) method. Bacteria with the TPA 1 colony code had the highest activity of 3.837 U/mL.
RAW STARCH-DEGRADING AMYLASE FROM BACTERIA IN KARANG MUMUS RIVER, SAMARINDA Astuti, Winni; Adawiyah, Rabiatul; Putri, Amanda Aulia; Pratiwi, Djihan Ryn
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 11, No 2 (2024): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v11i2.39438

Abstract

Raw starch-degrading amylase (RSDA) is an enzyme that has the ability to degrade starch granules into glucose without undergoing gelatinization. This research was conducted to explore and characterize extracellular RSDA-producing bacteria from body water of the Karang Mumus River, Samarinda. RSDA activity was analyzed qualitatively in nutrient agar containing 1% starch granules, bacterial colonies with RSDA activity are clear halos around bacterial colonies after the plates were flooded with iodine solution. Five of the 14 bacterial colonies secreted an RSDA extracellularly. The RSDA enzyme from the 5 bacteria was tested for amylase activity using the Dinitrosalicylic Acid (DNS) method. Bacteria with colony code KM 5 had the highest RSDA activity of 0.332 U/mL.The optimum working conditions for RSDA are at pH 5 and a temperature of 40°C. Identification of bacterial genotypes using the 16S rRNA gene showed that KM5 was Klebsiella sp, referred to as Klebsiella KM5.
RAW STARCH-DEGRADING AMYLASE FROM BACTERIA IN KARANG MUMUS RIVER, SAMARINDA Astuti, Winni; Adawiyah, Rabiatul; Putri, Amanda Aulia; Pratiwi, Djihan Ryn
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 11 No. 2 (2024): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v11i2.39438

Abstract

Raw starch-degrading amylase (RSDA) is an enzyme that has the ability to degrade starch granules into glucose without undergoing gelatinization. This research was conducted to explore and characterize extracellular RSDA-producing bacteria from body water of the Karang Mumus River, Samarinda. RSDA activity was analyzed qualitatively in nutrient agar containing 1% starch granules, bacterial colonies with RSDA activity are clear halos around bacterial colonies after the plates were flooded with iodine solution. Five of the 14 bacterial colonies secreted an RSDA extracellularly. The RSDA enzyme from the 5 bacteria was tested for amylase activity using the Dinitrosalicylic Acid (DNS) method. Bacteria with colony code KM 5 had the highest RSDA activity of 0.332 U/mL.The optimum working conditions for RSDA are at pH 5 and a temperature of 40°C. Identification of bacterial genotypes using the 16S rRNA gene showed that KM5 was Klebsiella sp, referred to as Klebsiella KM5.
Hubungan Father Involvement dengan Kontrol Diri Siswa Madrasah Tsanawiyah Putri, Amanda Aulia; Zahri, Triave Nuzila; Taufik, Taufik; Sari, Azmatul Khairiah; Putra, Ade Herdian
MUKADIMAH: Jurnal Pendidikan, Sejarah, dan Ilmu-ilmu Sosial Vol 9, No 2 (2025)
Publisher : Prodi Pendidikan Sejarah Fakultas Keguruan dan Ilmu Pendidikan Universitas Islam Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mkd.v9i2.11773

Abstract

This study aims to describe and examine the relationship between father involvement and student self-control, based on the persistent issues of truancy and low self-regulation among students. The research employed a quantitative method with a descriptive correlational approach. The study population consisted of students from MTsN 6 Padang City during the 2024/2025 academic year, with a sample of 266 students selected through stratified random sampling. The research instruments used were the father involvement scale and the self-control scale. Data were analyzed using descriptive statistics and Pearson Product Moment correlation. The results revealed that: (1) 34.96% of students exhibited a moderate level of self-control; (2) father involvement was also at a moderate level, with 33.08%; (3) there was a significant positive correlation between father involvement and students' self-control, with a correlation coefficient of 0.398. These findings affirm that father involvement makes a meaningful contribution to strengthening student self-control. This study has implications for family counseling services aimed at improving self-control among students with low levels of father involvement.
STRATEGI PENINGKATAN MOTIVASI BELAJAR SANTRI DI LINGKUNGAN MINORITAS MUSLIM (STUDI KASUS: MDTA NURUL IMAN DESA HARIARA POHAN KECAMATAN HARIAN KABUPATEN SAMOSIR) Putri, Dina Akamlia; Munthmainnah, Izzatul; Putri, Amanda Aulia; Azhari, Luthfi; Azzahra, Salwaa Humaira
Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Vol 5, No 2 (2025): Desember 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jpstm.v5i2.5193

Abstract

Abstract: This study discusses the implementation of strategies to increase students' learning motivation at Madrasah Diniyah Takmiliyah Amaliyah (MDTA) Nurul Iman, Hariara Pohan Village, Harian District, Samosir Regency, North Sumatra Province. This study is a descriptive qualitative study, namely data collection using observation and interview methods. The research subjects were male and female students of MDTA Nurul Iman Hariara Pohan Samosir. The data sources came from madrasa teachers and students of the Collaborative Community Service Program (KKN) of UIN SU and UIN SGD Bandung in 2025 who carried out a one-month madrasa teaching work program. The results of this study are that increasing learning motivation can be done with various strategies. As carried out by UIN SU KKN students, namely by interactive learning methods, giving prizes as a form of appreciation, to holding August 17th competition events. Meanwhile, Ustadz Risky Richo as a teacher at the madrasa applies an approach through games, eating together, recreation, and the application of educational punishments. This research clarifies that in a Muslim minority environment, the application of creative strategies and creating togetherness in learning can increase the learning motivation of male and female students.            Keywords: Learning motivation, MDTA Nurul Iman, teaching strategies, Muslim minority, KKN UIN SU and UIN SGD Bandung.  Abstrak: Penelitian ini membahas tentang penerapan strategi peningkatan motivasi belajar santri di Madrasah Diniyah Takmiliyah Amaliyah (MDTA) Nurul Iman, Desa Hariara Pohan, Kecamatan Harian, Kabupaten Samosir, Provinsi Sumatera Utara. Penelitian ini merupakan Penelitian kualitatif deskriptif, yaitu pengumpulan data dengan metode observasi dan wawancara. Subjek penelitian adalah santri dan santriwati MDTA Nurul Iman Hariara Pohan Samosir. Sumber data berasal dari guru madrasah dan mahasiswa Kuliah Kerja Nyata (KKN) Kolaborasi UIN SU dan UIN SGD Bandung tahun 2025 yang melaksanakan program kerja mengajar madrasah selama satu bulan. Hasil penelitian ini yaitu, peningkatan motivasi belajar dapat dilakukan dengan berbagai strategi. Seperti yang dilakukan oleh mahasiswa KKN UIN SU yaitu dengan metode pembelajaran yang interaktif, pemberian hadiah sebagai bentuk apresiasi, hingga menyelenggarakan event perlombaan 17 Agustus. Sementara Ustadz Risky Richo sebagai pengajar di madrasah menerapkan pendekatan melalui permainan, kegiatan makan bersama, rekreasi, hingga penerapan hukuman yang mendidik. Penelitian ini memperjelas bahwa di lingkungan minoritas muslim, penerapan strategi yang kreatif dan menciptakan kebersamaan dalam belajar dapat meningkatkan motivasi belajar santri dan santriwati. Kata kunci: Motivasi belajar, MDTA Nurul Iman, strategi pengajaran, minoritas muslim, KKN UIN SU dan UIN SGD Bandung.
Co-Authors Azhari, Luthfi Azmatul Khairiah Sari Azzahra, Salwaa Humaira Djihan Ryn Pratiwi, Djihan Ryn Munthmainnah, Izzatul Putra, Ade Herdian Putri, Dina Akamlia Rabiatul Adawiyah Taufik Taufik TRIAVE NUZILA ZAHRI Winni Astuti Winni Astuti, Winni