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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Jurnal Farmasi
Imaningsih, Witiyasti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Medicine & Pharmacology Nursing Public Health

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Isolation and Screening of Cellulolytic Soil Bacteria from Dramaga Forest in Bogor Weridyaningrum, Ratu; Imaningsih, Witiyasti; Fasha, Gusti Nur Aida
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 10, No 2 (2025): June 2025
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v10i2.11262

Abstract

Cellulolytic bacteria can produce cellulase enzymes, which allow them to degrade cellulose into simpler chemicals while using it as a growth substrate. These bacteria have drawn a lot of interest due to their unique properties and potential uses, such as in agriculture and the food industry. Soil is one of the habitats of cellulolytic bacteria. This study aims to determine the potential and screening of cellulolytic bacterial isolates. Cellulolytic bacteria were isolated from soil samples and cultured using selective Carboxyl Methyl Cellulose (CMC) media. Five purified isolates were collected, and their cellulase enzyme activity was qualitatively assessed using the Congo red test. Isolated bacteria code Area Jalan Setapak (AJS1) produced a higher clear zone index and will be used for further testing. Quantitative analysis of isolate AJS1 revealed its highest enzyme activity after ten minutes of incubation, with 0.0049 U/mL unit activity and 0.018 U/mg specific activity. Based on morphological and biochemical characteristics, isolated AJS1 was identified as Corynebacterium spp.
Perbandingan Kualitas Air di Pulau Jawa dan Kalimantan (Review Jurnal) Yuliani, Rida; Imaningsih, Witiyasti
Jurnal Farmasi (Journal of Pharmacy) Vol. 9 No. 1 (2020): Jurnal Farmasi (Journal of Pharmacy), April 2020
Publisher : Jurnal Farmasi (Journal of Pharmacy)

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Abstract

A review of water quality from the results of research on Java and Kalimantan has been carried out to get an illustration of water contamination level (refill drinking water, PDAM water, and well water) by Coliform bacteria. Data was obtained from secondary sources of research results from several regions in Java and Kalimantan. The results of water quality assessment of the two islands are presented as a percentage. Based on the results, the level of water contamination on Java island is higher than Kalimantan. The average percentage of Coliform contamination in water on Java is 61.42% and only 42.26% in Kalimantan. The high percentage of water contamination by Coliform bacteria in Java is due to the fact that Java has a higher source of contaminants. The existence of Coliform sources was influenced by the population, housing, and organic waste production.
Isolation and Screening of Cellulolytic Soil Bacteria from Dramaga Forest in Bogor Weridyaningrum, Ratu; Imaningsih, Witiyasti; Fasha, Gusti Nur Aida
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 10, No 2 (2025): June 2025
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v10i2.11262

Abstract

Cellulolytic bacteria can produce cellulase enzymes, which allow them to degrade cellulose into simpler chemicals while using it as a growth substrate. These bacteria have drawn a lot of interest due to their unique properties and potential uses, such as in agriculture and the food industry. Soil is one of the habitats of cellulolytic bacteria. This study aims to determine the potential and screening of cellulolytic bacterial isolates. Cellulolytic bacteria were isolated from soil samples and cultured using selective Carboxyl Methyl Cellulose (CMC) media. Five purified isolates were collected, and their cellulase enzyme activity was qualitatively assessed using the Congo red test. Isolated bacteria code Area Jalan Setapak (AJS1) produced a higher clear zone index and will be used for further testing. Quantitative analysis of isolate AJS1 revealed its highest enzyme activity after ten minutes of incubation, with 0.0049 U/mL unit activity and 0.018 U/mg specific activity. Based on morphological and biochemical characteristics, isolated AJS1 was identified as Corynebacterium spp.
Co-Authors Fasha, Gusti Nur Aida Weridyaningrum, Ratu Yuliani, Rida