IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v147y2020ip1p1694-1703.html
   My bibliography  Save this article

Bioprospecting non-conventional yeasts for ethanol production from rice straw hydrolysate and their inhibitor tolerance

Author

Listed:
  • Nandal, Preeti
  • Sharma, Shalley
  • Arora, Anju

Abstract

Cost effective bioethanol production from biomass requires complete utilization of mixed sugars and their efficient fermentation to ethanol. The fermenting strain should be capable of hexose and pentose utilization and tolerant to inhibitory byproducts of pretreatment. While, metabolic engineering strategies on Saccharomyces have yielded laboratory strains capable of mix sugar fermentation, hardly a few approaches have realized in industrial strains. Therefore, bioprospecting non-conventional native yeasts for efficient utilization of carbohydrate component of the biomass is imperative. In the present study, the fermentation efficiency of naturally pentose utilising yeasts such as Pichia stipitis NCIM3498, Pichia stipitis NCIM3497, Candida tropicalis Y6 and Rhodotorula glutinis Y1 was assessed on alkali pretreated rice straw hydrolysates, synthetic sugar/mixture and in presence of inhibitors. Highest fermentation efficiency (57.30%) on hydrolysate within 24 h was observed in P. stipitis NCIM3497 while P. stipitis NCIM3498 and C. tropicalis Y6 showed 53.03 and 46.51% respectively. On 2% glucose, fermentation efficiency was 64.77%–86.96% for Pichia and Candida strains, complete sugar depletion with 8.87 g L−1 highest ethanol production. On mixed sugars, highest fermentation efficiency was 87.35%. Pichia and Candida strains were tolerant to furfural and produced ethanol. Acetic acid and formic acid inhibited growth, sugar consumption and no ethanol detected.

Suggested Citation

  • Nandal, Preeti & Sharma, Shalley & Arora, Anju, 2020. "Bioprospecting non-conventional yeasts for ethanol production from rice straw hydrolysate and their inhibitor tolerance," Renewable Energy, Elsevier, vol. 147(P1), pages 1694-1703.
  • Handle: RePEc:eee:renene:v:147:y:2020:i:p1:p:1694-1703
    DOI: 10.1016/j.renene.2019.09.067
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148119313977
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.renene.2019.09.067?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Avchar, Rameshwar & Lanjekar, Vikram & Kshirsagar, Pranav & Dhakephalkar, Prashant K. & Dagar, Sumit Singh & Baghela, Abhishek, 2021. "Buffalo rumen harbours diverse thermotolerant yeasts capable of producing second-generation bioethanol from lignocellulosic biomass," Renewable Energy, Elsevier, vol. 173(C), pages 795-807.
    2. Sharma, Sumit & Swain, Manas R. & Mishra, Abhishek & Mathur, Anshu S. & Gupta, Ravi P. & Puri, Suresh K. & Ramakumar, S.S.V. & Sharma, Ajay K., 2021. "High solid loading and multiple-fed simultaneous saccharification and co-fermentation (mf-SSCF) of rice straw for high titer ethanol production at low cost," Renewable Energy, Elsevier, vol. 179(C), pages 1915-1924.
    3. Qu, Chunyun & Dai, Kaiqun & Liu, Gongliang & Wang, Jufang, 2023. "Engineering Thermoanaerobacterium aotearoense SCUT27 with the deficiency of a hypothetic protein regulated by ArgR1864 for enhanced ethanol production from lignocellulosic hydrolysates," Renewable Energy, Elsevier, vol. 216(C).
    4. Qu, Chunyun & Dai, Kaiqun & Fu, Hongxin & Wang, Jufang, 2021. "Enhanced ethanol production from lignocellulosic hydrolysates by Thermoanaerobacterium aotearoense SCUT27/ΔargR1864 with improved lignocellulose-derived inhibitors tolerance," Renewable Energy, Elsevier, vol. 173(C), pages 652-661.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:147:y:2020:i:p1:p:1694-1703. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.