Production of a biopolymer flocculant from Bacillus licheniformis and its flocculation properties

Bioresource Technology
I L ShihY N Chang

Abstract

Bacillus licheniformis CCRC 12826 produced extracellularly an excellent biopolymer flocculant in a large amount when it was grown aerobically in a culture medium containing citric acid, glutamic acid and glycerol as carbon sources. The biopolymer flocculant was an extremely viscous material with a molecular weight over 2 x 10(6) by gel permeation chromatography. It could be easily purified from the culture medium by ethanol precipitation. It was shown to be a homopolymer of glutamic acid by amino acid analysis and thin layer chromatography and presumed to be poly-glutamic acid (PGA). This bioflocculant efficiently flocculated various organic and inorganic suspensions. It flocculated a suspended kaolin suspension without cations, although its flocculating activity was synergistically stimulated by the addition of bivalent or trivalent cations Ca2+, Fe3+ and Al3+. However, the synergistic effects of metal cations were most effective at neutral pH ranges. The comparison of the flocculating activity between the present biopolymer and a commercial lower molecular weight product showed that the biopolymer of the present study had much higher activity. The high productivity and versatile applications of PGA make its development as a n...Continue Reading

Citations

Jul 26, 2008·Journal of Industrial Microbiology & Biotechnology·I B BajajR S Singhal
Jul 19, 2012·World Journal of Microbiology & Biotechnology·Xiaomei SuAkira Yokota
Nov 19, 2009·Applied Biochemistry and Biotechnology·Satish V PatilBipinchandra K Salunke
Aug 24, 2010·Applied Biochemistry and Biotechnology·Satish Vitthalrao PatilDeepak M Patil
Dec 31, 2003·Journal of Colloid and Interface Science·Hideshi SekiHideo Maruyama
May 6, 2004·Journal of Environmental Management·Anastasios I ZouboulisIoannis A Katsoyiannis
Jun 14, 2003·Journal of Colloid and Interface Science·Hideshi Seki, Akira Suzuki
Mar 9, 2010·Applied and Environmental Microbiology·Yuyan XiongNing He
Oct 20, 2005·Journal of Bioscience and Bioengineering·Makoto TaniguchiEiji Hirasawa
Feb 28, 2006·Journal of Zhejiang University. Science. B·Jie GaoYan-fen Zhang
Oct 19, 2013·International Journal of Environmental Research and Public Health·Kunle OkaiyetoAnthony I Okoh
Feb 9, 2012·International Journal of Molecular Sciences·Leonard V MabinyaAnthony I Okoh
Jul 23, 2013·Bioprocess and Biosystems Engineering·Suse Botelho da SilvaMarco Antonio Záchia Ayub
Jul 12, 2014·Journal of Industrial Microbiology & Biotechnology·Alessandra de CesaroMarco Antônio Záchia Ayub
Oct 16, 2014·Biotechnology Advances·Hossein Salehizadeh, Ning Yan
Feb 7, 2014·Environmental Science and Pollution Research International·Zhilin ZhangCaixia Hu
Jun 11, 2015·International Journal of Molecular Sciences·Kunle OkaiyetoAnthony I Okoh
Jan 23, 2016·Environmental Technology·Kunle OkaiyetoAnthony I Okoh
Mar 4, 2011·Journal of Hazardous Materials·Yuan-ling LuoLi-ke Wang
Jul 28, 2009·Journal of Hazardous Materials·Lijun YouYeping Yin
Oct 31, 2007·Bioresource Technology·Bin LianSheng Yuan
Aug 19, 2007·Bioresource Technology·Sampa ChakrabartiBinay K Dutta
Jul 17, 2013·Microbial Biotechnology·Makoto Ashiuchi
Mar 15, 2006·Bioresource Technology·N PradhanL B Sukla
Apr 4, 2016·International Journal of Biological Macromolecules·Bakhtiyor A RasulovHaji Akber Aisa
Oct 8, 2014·Microbiology·Adetoro OgunleyeIza Radecka
Jun 21, 2015·Ecotoxicology and Environmental Safety·Sib Sankar GiriSe Chang Park

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.