Linked Life Data

17695906

Source:http://linkedlifedata.com/resource/pubmed/id/17695906

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
13
pubmed:dateCreated
2007-8-16
pubmed:abstractText
The DLVO theory was used to explore the flocculation characteristics of a H2-producing photosynthetic bacterium, Rhodopseudomonas acidophila. The relationship between the surface characteristics of this strain and itsflocculability was evaluated. Its flocculability was governed by both electrolyte concentration and pH, and the appropriate electrolyte concentration and pH were found to be 0.1 M NaCl solution and pH 7.0, respectively. In addition, the extracellular polymeric substances produced by R. acidophila were observed to have a significant effect on its flocculation. The effective Hamaker constant between R. acidophila and water was only 2.27 x 10(-23) J, suggesting that the contribution of van der Waals interaction energy to the total interaction energy could be neglected. As a result, the bacterial particles could not overcome the total energy barrier to flocculate effectively. Otherwise, because the repulsive total interfacial free energy between the bacterial cells and water was positive, the cell particles of R. acidophila repelled each other, resulting in a great stability of the cell suspensions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0013-936X
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4620-5
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
DLVO approach to the flocculability of a photosynthetic H2-producing bacterium, Rhodopseudomonas acidophila.
pubmed:affiliation
School of Chemistry, University of Science & Technology of China, Hefei 230026, China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't