Taruna Dwi Satwika
Universitas Jenderal Soedirman

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Karakteristik dan Potensi Enzimatis Bakteri Asal Tanah Sampah Dapur dan Kotoran Ternak sebagai Kandidat Agen Biodegradasi Sampah Organik Taruna Dwi Satwika; Dwiana Muflihah Yulianti; Arif Rahman Hikam
Al-Hayat: Journal of Biology and Applied Biology Vol 4, No 1 (2021)
Publisher : Fakultas Sains dan Teknologi, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/ah.v4i1.7013

Abstract

Composting is an alternative for recycling organic waste. Microorganisms that can degrade the components of organic waste are an essential part of composting. Isolation and selection of bacteria with the ability to degrade the elements of organic waste are the first steps to obtain an organic waste degrading agent. This study aimed to determine the characteristics and the enzymatic potential (cellulolytic, amylolytic, and proteolytic) of bacteria isolated from soil, cow dung and kitchen waste as candidates for organic waste degradation agents. The research begins with sampling and isolation of bacteria. The isolates obtained were tested qualitatively for their amylolytic, cellulolytic and proteolytic activities. Furthermore, bacterial isolates were characterized morphologically and biochemically. A total of 30 bacterial isolates were isolated from soil samples, cow dung and kitchen waste. The screening result showed that 6 isolates had amylolytic activity, 7 isolates had cellulolytic activity and 3 isolates had proteolytic activity. These bacterial isolates showed various morphological and biochemical characteristics. In general, soil samples, kitchen waste and cow dung contain potential bacteria as organic waste degrading agents
Potensi Isolat Bakteri Selulolitik Toleran Panas Asal Tanah, Sampah Dapur, dan Kotoran Sapi Dalam Biodegradasi Serasah Daun Taruna Dwi Satwika; Hendro Pramono; Dwiana Muflihah Yulianti
Al-Kauniyah: Jurnal Biologi Vol 16, No 2 (2023): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v16i2.25616

Abstract

 AbstrakBakteri selulolitik memainkan peranan penting dalam biodegradasi komponen selulosa pada sampah organik. Namun, proses pengomposan umumnya melewati fase termofilik (suhu mencapai 55 °C), sehingga tidak semua bakteri dapat bertahan. Sebanyak delapan isolat bakteri selulolitik telah berhasil diisolasi dari tanah, sampah dapur, dan kotoran sapi. Namun, isolat-isolat tersebut belum diketahui aktivitas selulolitiknya pada suhu tinggi dan kemampuannya dalam mendegradasi biomassa serasah daun. Tujuan penelitian ini adalah mengetahui aktivitas selulolitik isolat bakteri pada suhu tinggi secara kualitatif, mengetahui aktivitas selulolitik isolat bakteri secara kuantitatif, dan mengetahui kemampuan isolat bakteri selulolitik dalam mendegradasi biomassa serasah daun. Penelitian dilakukan dengan tahapan peremajaan isolat, skrining kualitatif aktivitas selulolitik isolat pada suhu ruangan, 45 °C dan 55 °C, skrining kuantitatif aktivitas selulolitik isolat, dan uji degradasi biomassa serasah daun. Sebanyak 6 dari 8 isolat bakteri menunjukkan aktivitas selulolitik pada medium Carboxy Methyl Celullose (CMC) Agar pada suhu 55 °C. Berdasarkan uji aktivitas enzim secara kuantitatif, 3 isolat (KS1, KS4, dan SD5) dengan aktivitas enzim tertinggi terpilih untuk pengujian degradasi serasah daun dan menunjukkan rata-rata aktivitas enzim secara berurutan 0,0074 UI/mL; 0,0080 UI/mL; 0,0159 UI/mL. Ketiga isolat mampu mempercepat proses degradasi serasah daun dan berpotensi sebagai agen pengomposan.AbstractHowever, the composting process generally passes through a thermophilic phase (55 °C), so that not all bacteria can survive. A total of 8 isolates of cellulolytic bacteria isolated from soil, kitchen waste, and cow dung have not yet known their cellulolytic activity at high temperatures and their ability to degrade leaf litter biomass. This study aimed to determine the cellulolytic activity of bacterial isolates at high temperatures qualitatively, to determine the cellulolytic activity of bacterial isolates quantitatively, and to determine the ability of these isolates to degrade leaf litter biomass. The research was carried out by reculture isolates; qualitative screening of isolate cellulolytic activity at room temperature, 45 °C and 55 °C; quantitative screening of isolate cellulolytic activity; and leaf litter biomass degradation test. Six of eight bacterial isolates showed cellulolytic activity on Carboxy Methyl Celullose (CMC) Agar medium at 55 °C. Three isolates (KS1, KS4, and SD5) with the highest enzyme activity were selected for the leaf litter degradation test and showed an average enzyme activity of 0.0074 UI/mL; 0.0080 UI/mL; 0.0159 UI/mL, respectively. The three isolates were able to accelerate the degradation process of leaf litter and have potential as composting agents.