Isolation and characterization of high stress tolerance yeast from various sources in Bangladesh
This thesis is submitted in partial fulfilment of the requirements for the degree of Bachelor of Science in Microbiology, 2021.
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Brac University
2021
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| Acceso en liña: | http://hdl.handle.net/10361/15016 |
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10361-150162021-09-15T21:01:28Z Isolation and characterization of high stress tolerance yeast from various sources in Bangladesh Noor, Md. Abdun Haque, Fahim Kabir Monjurul Department of Mathematics and Natural Sciences, Brac University Bioethanol Yeast Alcohol tolerance Stress tolerance Thermo tolerance Osmo tolerance This thesis is submitted in partial fulfilment of the requirements for the degree of Bachelor of Science in Microbiology, 2021. Catalogued from PDF version of thesis. Includes bibliographical references (pages 15-16). Bioethanol is becoming popular day by day because of its increasing demand as a renewable resource. A single celled eukaryotic living organism called yeast plays a vital role in producing alcohol. Though there are many organisms can interfere the process like acetobacter. However, it is almost impossible for other organism to compete with yeast due to its instinct. In addition, yeast releases alcohol as a byproduct which has strong antimicrobial activity. Thus, yeast is dominant in its environment since most of the microorganisms cannot tolerate alcohol. on the contrary, increasing amount of alcohol can also inhibit the growth of yeast and put the organism in stationary phase. The aim of this study is to isolate and characterize a yeast which can tolerate high concentration of alcohol as well as stress and can produce more alcohol before reaching the stationary phase. For this purpose, primary sample has been collected from Lavender flower, Apple skin, Grape skin, honey and yeast from stressed environment created manually. In thermo tolerance test, isolated yeast sample showed significant growth at 27˚C and 30˚C. on the other hand, it showed high osmo tolerance in addition of NaCl in different concentration. Lastly, it showed significant growth in 5% and 10% ethanol concentration. Since it showed a significant tolerance in the tests, it could be a promising strain to use in future for industrial purpose. Md. Abdun Noor B. Microbiology 2021-09-15T06:30:43Z 2021-09-15T06:30:43Z 2021 2021-05 Thesis ID: 15226008 http://hdl.handle.net/10361/15016 en_US Brac University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. 16 Pages application/pdf Brac University |
| institution |
Brac University |
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Institutional Repository |
| language |
en_US |
| topic |
Bioethanol Yeast Alcohol tolerance Stress tolerance Thermo tolerance Osmo tolerance |
| spellingShingle |
Bioethanol Yeast Alcohol tolerance Stress tolerance Thermo tolerance Osmo tolerance Noor, Md. Abdun Isolation and characterization of high stress tolerance yeast from various sources in Bangladesh |
| description |
This thesis is submitted in partial fulfilment of the requirements for the degree of Bachelor of Science in Microbiology, 2021. |
| author2 |
Haque, Fahim Kabir Monjurul |
| author_facet |
Haque, Fahim Kabir Monjurul Noor, Md. Abdun |
| format |
Thesis |
| author |
Noor, Md. Abdun |
| author_sort |
Noor, Md. Abdun |
| title |
Isolation and characterization of high stress tolerance yeast from various sources in Bangladesh |
| title_short |
Isolation and characterization of high stress tolerance yeast from various sources in Bangladesh |
| title_full |
Isolation and characterization of high stress tolerance yeast from various sources in Bangladesh |
| title_fullStr |
Isolation and characterization of high stress tolerance yeast from various sources in Bangladesh |
| title_full_unstemmed |
Isolation and characterization of high stress tolerance yeast from various sources in Bangladesh |
| title_sort |
isolation and characterization of high stress tolerance yeast from various sources in bangladesh |
| publisher |
Brac University |
| publishDate |
2021 |
| url |
http://hdl.handle.net/10361/15016 |
| work_keys_str_mv |
AT noormdabdun isolationandcharacterizationofhighstresstoleranceyeastfromvarioussourcesinbangladesh |
| _version_ |
1814309636414636032 |