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Identification of Protease Producing Halophilic Bacteria from Bledug KuwuMud Volcano

Indonesian Journal of Biotechnology · Vol. 17 No. 1 (2012) · hlm. 35–41

DOI
10.22146/ijbiotech.15995
ISSN
2089-2241, 0853-8654
Terbit
2012-06-03
Penerbit
Universitas Gadjah Mada
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-sa/4.0

Abstrak

The objective of this research was to isolate and identify the halophilic bacteria from Bledug Kuwu-mudvolacano having an ability to produce proteolytic enzyme. From this work, 6 bacterial isolates were obtainedfrom mud and water samples using artificial sea water media after incubation at room temperature. Threeout of the 6 isolates (BKL-3, BKL-5, and BKA-1) were selected for further analysis. BKL-3, BKL-5 and BKA-1exhibited an ability to grow at salt concentration greater than 10%. BKL-3 could grow on media supplementedwith 15% of salt, meanwhile BKL-5 and BKA-1 could grow at 20% of salt, respectively. Furthermore, thoseisolates also exhibited proteolytic activity when they were grown on casein media. The phylogenetic analysisbased on the 16SrRNA gene sequences showed that the BKL-3 belong to the group of Bacillaceae, whilst BKL-5and BKA-1 isolates were relatively distance from the group of Halomonadaceae. Therefore, BKL-5 and BKA-1could be considered as the allegedly new species that were separated from Halomonadaceae

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Jaka WidadaUniversitas Gadjah Mada3
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Sumber metadata: OAI-PMH (metadata jurnal) https://jurnal.ugm.ac.id/ijbiotech/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">Identification of Protease Producing Halophilic Bacteria from Bledug KuwuMud Volcano</dc:title>
	<dc:creator>Rohman, Muhammad Saifur</dc:creator>
	<dc:creator>Prijambada, Irfan Dwidya</dc:creator>
	<dc:creator>Indriyani, Yohanna Anisa</dc:creator>
	<dc:creator>Hendrosatriyo, Heri</dc:creator>
	<dc:subject xml:lang="en-US">halophilic; halotolerant; protease; 16SrRNA gene; Bledug Kuwu-mud volcano; phylogenetic tree</dc:subject>
	<dc:description xml:lang="en-US">The objective of this research was to isolate and identify the halophilic bacteria from Bledug Kuwu-mudvolacano having an ability to produce proteolytic enzyme. From this work, 6 bacterial isolates were obtainedfrom mud and water samples using artificial sea water media after incubation at room temperature. Threeout of the 6 isolates (BKL-3, BKL-5, and BKA-1) were selected for further analysis. BKL-3, BKL-5 and BKA-1exhibited an ability to grow at salt concentration greater than 10%. BKL-3 could grow on media supplementedwith 15% of salt, meanwhile BKL-5 and BKA-1 could grow at 20% of salt, respectively. Furthermore, thoseisolates also exhibited proteolytic activity when they were grown on casein media. The phylogenetic analysisbased on the 16SrRNA gene sequences showed that the BKL-3 belong to the group of Bacillaceae, whilst BKL-5and BKA-1 isolates were relatively distance from the group of Halomonadaceae. Therefore, BKL-5 and BKA-1could be considered as the allegedly new species that were separated from Halomonadaceae</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Gadjah Mada</dc:publisher>
	<dc:contributor xml:lang="en-US"></dc:contributor>
	<dc:date>2012-06-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research Articles</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.ugm.ac.id/ijbiotech/article/view/15995</dc:identifier>
	<dc:identifier>10.22146/ijbiotech.15995</dc:identifier>
	<dc:source xml:lang="en-US">Indonesian Journal of Biotechnology; Vol 17, No 1 (2012); 35-41</dc:source>
	<dc:source>2089-2241</dc:source>
	<dc:source>0853-8654</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.ugm.ac.id/ijbiotech/article/view/15995/10552</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2016 Muhammad Saifur Rohman, Irfan Dwidya Prijambada, Yohanna Anisa Indriyani, Heri Hendrosatriyo</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>