Microalgae-associated bacteria play a key role in the flocculation of Chlorella vulgaris

Bioresource Technology
Jimin LeeHee-Sik Kim

Abstract

Flocculation is most preferred method for harvesting microalgae, however, the role of bacteria in microalgal flocculation process is still unknown. This study proves that bacteria play a profound role in flocculating by increasing the floc size resulting in sedimentation of microalgae. A flocculating activity of 94% was achieved with xenic Chlorella vulgaris culture as compared to 2% achieved with axenic culture. Denaturing gradient gel electrophoresis (DGGE) analysis of 16S rRNA gene of xenic C. vulgaris culture revealed the presence of Flavobacterium sp., Terrimonas sp., Sphingobacterium sp., Rhizobium sp. and Hyphomonas sp. as microalgae-associated bacteria. However when Flavobacterium, Terrimonas, Sphingobacterium were eliminated by fluorescence activated cell sorter (FACS), flocculating activity reduced to 3%. Further studies with cell free extracts also suggest that bacterial extracellular substances might also have a role in enhancing flocculation. We conclude that the collective presence of certain bacteria is the determining factor in flocculation of C. vulgaris.

References

Oct 11, 2003·Biotechnology Advances·E Molina GrimaYusuf Chisti
May 13, 2006·Environmental Microbiology·Hans-Peter GrossartMeinhard Simon
Feb 1, 1984·Biotechnology and Bioengineering·A Sukenik, G Shelef
Sep 10, 2010·The ISME Journal·Astrid GärdesMatthias S Ullrich
May 11, 2011·Biotechnology and Bioengineering·Dries VandammeKoenraad Muylaert
Sep 2, 2011·Biotechnology and Bioengineering·Nicholas B WyattPhillip I Pohl

❮ Previous
Next ❯

Citations

Dec 20, 2013·Environmental Technology·Ahmed E M AbdelazizPatrick C Hallenbeck
Dec 15, 2015·Biotechnology Advances·Rishiram RamananHee-Sik Kim
Dec 31, 2015·Environmental Technology·Giovanni Antonio LutzuTianzhong Liu
Dec 3, 2014·Bioresource Technology·Dae-Hyun ChoHee-Sik Kim
Mar 13, 2015·Biotechnology for Biofuels·Nazim MuradovAidyn Mouradov
Oct 30, 2016·Bioresource Technology·Yue WangJo-Shu Chang
Oct 29, 2015·Environmental Technology·Sanna JaatinenJukka Rintala
Apr 11, 2018·Critical Reviews in Biotechnology·Ankita SrivastavaHee-Mock Oh
Jul 31, 2013·Applied and Environmental Microbiology·Ryan J Powell, Russell T Hill
Apr 29, 2014·Applied and Environmental Microbiology·Ryan J Powell, Russell T Hill
Jan 9, 2019·Frontiers in Bioengineering and Biotechnology·Felix BracharzThomas B Brück
Apr 5, 2019·PeerJ·Joao D GouveiaMaria J Barbosa
Nov 20, 2020·The Science of the Total Environment·Seyedeh Fatemeh MohsenpourTony Gutierrez
Nov 26, 2018·Bioresource Technology·Lu WangRoger Ruan
Dec 22, 2020·Frontiers in Microbiology·Yu-Ming Cai
Mar 28, 2021·Bioresource Technology·Lijian LengHuajun Huang
May 1, 2021·Biology·Lina Maria González-González, Luz E de-Bashan
May 14, 2021·Critical Reviews in Biotechnology·Rahul Vijay KapooreSeetharaman Vaidyanathan

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofuels (ASM)

Biofuels are produced through contemporary processes from biomass rather than geological processes involved in fossil fuel formation. Examples include biodiesel, green diesel, biogas, etc. Discover the latest research on biofuels in this feed.

Related Papers

Water Science and Technology : a Journal of the International Association on Water Pollution Research
L A BereschenkoM C M Van Loosdrecht
Water Science and Technology : a Journal of the International Association on Water Pollution Research
R GovoreanuP A Vanrolleghem
© 2021 Meta ULC. All rights reserved