Isolation and Optimization of Ethanol Producing Bacteria from Natural Environments of Mazandaran Province in Iran

Authors

  • Hoda Ebrahimi Department of Molecular and Cell Biology, Faculty of Science, University of Mazandaran, Babolsar, Iran
  • Mohammad Javad Chaichi Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
  • Mojtaba Mohseni Department of Molecular and Cell Biology, Faculty of Science, University of Mazandaran, Babolsar, Iran
Abstract:

Ethanol producing bacteria are useful in industrial production of biofuel. There are interesting for screening of active bacteria from natural resources and introduce to biofuel industries. The present study aims to isolation of ethanol producing bacteria with characterization, optimization, and evaluation of their ethanol productivity. Samples from various fruits, plant saps and soils were screened for isolation of ethanol producing bacteria then evaluate to find the highest ethanol producer. Of all the 37 ethanol producing isolates, 6 highest producers were selected for characterization. Bacterial growth and ethanol production conditions were optimized based on pH, temperature, agitation, time and initial glucose concentration. Most isolates were occurred single or in pairs. All of isolates were motile and catalase positive but failed to hydrolyze gelatin and produce H2S. Among them, Zym6 was exhibited highest ethanol yield 6.28 gL-1 with optimum pH 6 and growth temperature 35 ˚C. In addition, Zym5 and Zym6 were exhibited highest ethanol yield 19.52 gL-1 and 18.75 gL-1 with xylose and tryptophan, respectively. Thus the optimum condition for ethanol production was a medium composed of pH 6, growth temperature 35 ˚C for 24-48 hours and xylose and tryptophan as carbon and nitrogen sources.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

isolation and optimization of ethanol producing bacteria from natural environments of mazandaran

ethanol producing bacteria are useful in industrial production of biofuel. there are interesting for screening of active bacteria from natural resources and introduce to biofuel industries. the present study aims to isolation of ethanol producing bacteria with characterization, optimization, and evaluation of their ethanol productivity. samples from various fruits, plant saps and soils were scr...

full text

Characterization of native ethanol producing Zymomonas spp. isolated from natural environments in Iran

Ethanol is renewable and safe fuel and it is mainly produced based on microbial fermentation. The present study aims to isolate and identify ethanol producing Zymomonas spp. from natural environments with characterization, optimization and evaluation of their ethanol productivity. Samples were screened for ethanol producing bacteria on RM medium. Ethanol producing isolates were selected for cha...

full text

a study on the design of bio-ethanol process from date wastes of sistan and baluchistan province

اتانول کاربردهای متنوعی در صنایع لاستیک سازی، رنگسازی، حلالها ومکمل سوخت خودرو دارد. اتانول برخلاف نفت از جمله مواد تجدیدپذیر محسوب می شود که مشکلات زیست محیطی و آلودگی نیز ایجاد نمی کند. استفاده از اتانول به عنوان مکمل سوختخودروها از جمله مهمترین مصارف صنعتی این ماده بشمار می رود. با توجه به این موضوع تحقیق و توسعه در زمینه تولید اتانول با درجه خلوص بالا در سطح جهان، و نه تنها در کشور های پیشر...

synthesis of sulfides from alcohols and thiols in solvent-freeconditions and deoxygenation of sulfoxides

کاتالیست یک سنتز جدید برای تیواترها توصیف شده است. واکنش الکل ها با آریل، هتروآریل و آلکیل تیو ل ها درحضور 1،3،5- تری آزو- 2،4،6- تری فسفرین-2،2،4،4،6،6 هگزاکلراید ((tapc به عنوان یک کاتالیست موُثر، بازده های خوب تا عالی از تیواترها را حاصل می کند. علاوه براین، واکنش تحت شرایط بدون فلز و بدون حلال پیش می رود، بنابراین یک مکمل جالب برای روش های شناخته شده سنتز تیواترها ارائه می دهد. یک مکانیسم ا...

15 صفحه اول

Blood malignancies in Mazandaran province of Iran.

BACKGROUND Leukemia and lymphoma demonstrate significantly incidence rates throughout the world and particularly in Iran they cause serious mortality and diagnosis and treatment expenditures for both families and the health system. Combined they account for about 11 percent of cancers in Mazandaran province, ranking number 2 in prevalent cancers. The purpose of this study was to provide a first...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 1  issue 1

pages  35- 44

publication date 2015-03-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023