Thermostable Chitinase Producing Bacterium from Ijen Hot Spring – Indonesia: Isolation, Identification, and Characterization
The high industrial demand for thermostable chitinase with new and desirable characteristics has led to the exploration of chitinolytic bacteria from extreme environments. Therefore, this study aimed to isolate, screen, and identify chitinase–producing bacteria from Ijen hot spring, Indonesia. The h...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
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| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/11/e3sconf_3rdnrls2023_00032.pdf |
| _version_ | 1827971378138054656 |
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| author | Chrisnasari Ruth Priscilla Sutanto Liony Paulina Dian Wahjudi Alicia Pantjajani Tjandra |
| author_facet | Chrisnasari Ruth Priscilla Sutanto Liony Paulina Dian Wahjudi Alicia Pantjajani Tjandra |
| author_sort | Chrisnasari Ruth |
| collection | DOAJ |
| description | The high industrial demand for thermostable chitinase with new and desirable characteristics has led to the exploration of chitinolytic bacteria from extreme environments. Therefore, this study aimed to isolate, screen, and identify chitinase–producing bacteria from Ijen hot spring, Indonesia. The highest chitinolytic activity bacterium was identified by 16S rRNA gene sequencing and its characteristics were confirmed by morphological and physiological analyses. Chitinase production activity of selected bacterium under variation of agitation and aeration as well as its chitinase properties were characterized afterward. Twelve chitinolytic bacterial colonies were isolated and screened for their growth activity on Thermus colloidal chitin medium, in which chitin was used as the sole carbon source. Among these twelve isolates, isolate B2 showed the highest chitinolytic activity. The molecular, morphological, and physiological analyses confirmed that isolate B2 belonged to Bacillus licheniformis. This isolate produced a huge amount of chitinase on Thermus colloidal chitin medium at 50 °C within 30 h. The highest growth and chitinase production activity were recorded at 3 vvm aeration rate and 300 rpm agitation speed. Chitinase produced by this isolate was optimally active at pH of 7 and temperature of 55 °C and evidently proofed as thermostable due to its high residual activity after several thermal stability tests. |
| first_indexed | 2024-04-09T19:08:02Z |
| format | Article |
| id | doaj.art-650a2503ab8045d29bb5798e7d44b62d |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-04-09T19:08:02Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-650a2503ab8045d29bb5798e7d44b62d2023-04-07T08:56:13ZengEDP SciencesE3S Web of Conferences2267-12422023-01-013740003210.1051/e3sconf/202337400032e3sconf_3rdnrls2023_00032Thermostable Chitinase Producing Bacterium from Ijen Hot Spring – Indonesia: Isolation, Identification, and CharacterizationChrisnasari Ruth0Priscilla Sutanto Liony1Paulina Dian2Wahjudi Alicia3Pantjajani Tjandra4Faculty of Biotechnology, University of Surabaya, Raya Kalirungkut, SurabayaFaculty of Biotechnology, University of Surabaya, Raya Kalirungkut, SurabayaFaculty of Biotechnology, University of Surabaya, Raya Kalirungkut, SurabayaFaculty of Biotechnology, University of Surabaya, Raya Kalirungkut, SurabayaFaculty of Biotechnology, University of Surabaya, Raya Kalirungkut, SurabayaThe high industrial demand for thermostable chitinase with new and desirable characteristics has led to the exploration of chitinolytic bacteria from extreme environments. Therefore, this study aimed to isolate, screen, and identify chitinase–producing bacteria from Ijen hot spring, Indonesia. The highest chitinolytic activity bacterium was identified by 16S rRNA gene sequencing and its characteristics were confirmed by morphological and physiological analyses. Chitinase production activity of selected bacterium under variation of agitation and aeration as well as its chitinase properties were characterized afterward. Twelve chitinolytic bacterial colonies were isolated and screened for their growth activity on Thermus colloidal chitin medium, in which chitin was used as the sole carbon source. Among these twelve isolates, isolate B2 showed the highest chitinolytic activity. The molecular, morphological, and physiological analyses confirmed that isolate B2 belonged to Bacillus licheniformis. This isolate produced a huge amount of chitinase on Thermus colloidal chitin medium at 50 °C within 30 h. The highest growth and chitinase production activity were recorded at 3 vvm aeration rate and 300 rpm agitation speed. Chitinase produced by this isolate was optimally active at pH of 7 and temperature of 55 °C and evidently proofed as thermostable due to its high residual activity after several thermal stability tests.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/11/e3sconf_3rdnrls2023_00032.pdfbacillus licheniformischitooligosaccharides (chos)chitinolytic enzymeenvironmentally-friendly technology |
| spellingShingle | Chrisnasari Ruth Priscilla Sutanto Liony Paulina Dian Wahjudi Alicia Pantjajani Tjandra Thermostable Chitinase Producing Bacterium from Ijen Hot Spring – Indonesia: Isolation, Identification, and Characterization E3S Web of Conferences bacillus licheniformis chitooligosaccharides (chos) chitinolytic enzyme environmentally-friendly technology |
| title | Thermostable Chitinase Producing Bacterium from Ijen Hot Spring – Indonesia: Isolation, Identification, and Characterization |
| title_full | Thermostable Chitinase Producing Bacterium from Ijen Hot Spring – Indonesia: Isolation, Identification, and Characterization |
| title_fullStr | Thermostable Chitinase Producing Bacterium from Ijen Hot Spring – Indonesia: Isolation, Identification, and Characterization |
| title_full_unstemmed | Thermostable Chitinase Producing Bacterium from Ijen Hot Spring – Indonesia: Isolation, Identification, and Characterization |
| title_short | Thermostable Chitinase Producing Bacterium from Ijen Hot Spring – Indonesia: Isolation, Identification, and Characterization |
| title_sort | thermostable chitinase producing bacterium from ijen hot spring indonesia isolation identification and characterization |
| topic | bacillus licheniformis chitooligosaccharides (chos) chitinolytic enzyme environmentally-friendly technology |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/11/e3sconf_3rdnrls2023_00032.pdf |
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