Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

51314-3877-D-Amino Acids Enhanced Biocide Mitigation of Problematic Biofilms

Picture for D-Amino Acids Enhanced Biocide Mitigation of Problematic Biofilms
Available for download
Product Number: 51314-3877-SG
ISBN: 3877 2014 CP
Author: Tingyue Gu
Publication Date: 2014
$0.00
$0.00
$0.00
Biofilms cause biofouling and biocorrosion. All bacterial cell walls contain peptidoglycan molecules with peptide stems consisting of four alternating L- and D-amino acids. The peptide stems all have a D-alanine terminus. It has been hypothesized that replacing the D-alanine terminus with another D-amino acid sends a biofilm dispersal signal. Several recent journal papers presented experimental data showing that D-tyrosine D-tryptophan D-methionine and D-leucine at low concentrations are capable of dispersing several bacterial biofilms. It is well known that sessile cells in biofilms are far more difficult to mitigate than planktonic cells because biofilms have various defense mechanisms. Usually ten times or higher biocide concentrations are required to treat biofilms compared with planktonic cells. Converting sessile cells to planktonic cells is desirable in biofilm mitigation. This work presents experimental data showing that some D-amino acids other than the aforementioned ones can also considerably enhance biocide treatment of biofilms including biofilms of sulfate reducing bacteria (SRB). The experimental data using two different biocides also confirm that for tough biofilms a biocide stress is required for recalcitrant SRB biofilm dispersal by D-amino acids.
Biofilms cause biofouling and biocorrosion. All bacterial cell walls contain peptidoglycan molecules with peptide stems consisting of four alternating L- and D-amino acids. The peptide stems all have a D-alanine terminus. It has been hypothesized that replacing the D-alanine terminus with another D-amino acid sends a biofilm dispersal signal. Several recent journal papers presented experimental data showing that D-tyrosine D-tryptophan D-methionine and D-leucine at low concentrations are capable of dispersing several bacterial biofilms. It is well known that sessile cells in biofilms are far more difficult to mitigate than planktonic cells because biofilms have various defense mechanisms. Usually ten times or higher biocide concentrations are required to treat biofilms compared with planktonic cells. Converting sessile cells to planktonic cells is desirable in biofilm mitigation. This work presents experimental data showing that some D-amino acids other than the aforementioned ones can also considerably enhance biocide treatment of biofilms including biofilms of sulfate reducing bacteria (SRB). The experimental data using two different biocides also confirm that for tough biofilms a biocide stress is required for recalcitrant SRB biofilm dispersal by D-amino acids.
Product tags
Also Purchased
Picture for Comparison of Anaerobic Biocorrosion Mechanisms for Different Systems
Available for download

51314-3878-Comparison of Anaerobic Biocorrosion Mechanisms for Different Systems

Product Number: 51314-3878-SG
ISBN: 3878 2014 CP
Author: Tingyue Gu
Publication Date: 2014
$0.00
Picture for Localized Corrosion Initiation of Carbon Steel in a CO2 Environment
Available for download

51314-3880-Localized Corrosion Initiation of Carbon Steel in a CO2 Environment

Product Number: 51314-3880-SG
ISBN: 3880 2014 CP
Author: Xin Gao
Publication Date: 2014
$0.00
Picture for Minimizing the Grounding Resistance of Compact Cathodic Protection Anodic Beds with Finite Element M
Available for download

51314-3859-Minimizing the Grounding Resistance of Compact Cathodic Protection Anodic Beds with Finite Element Method

Product Number: 51314-3859-SG
ISBN: 3859 2014 CP
Author: Chengwei Xu
Publication Date: 2014
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support