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Nowak E, Brousseau R, Garrett J, Masson L, Maynard C, Trevors J, Edge T. Characterization of formulated microbial products by denaturing gradient gel electrophoresis, total cellular fatty acid analysis, and DNA microarray analysis. Can J Microbiol 2008; 54:380-90. [DOI: 10.1139/w08-015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two commercial products, Biotize and Cycle, containing bacteria as an active ingredient were characterized for species identification and batch-to-batch variation by denaturing gradient gel electrophoresis (DGGE), total cellular fatty acid analysis (FAA), and a taxonomic DNA microarray. DGGE was useful at assessing the stability of consortia in different batches, and cluster analysis differentiated each batch even when only slight differences in species composition were observed. DGGE, FAA, and DNA microarray results indicated little batch-to-batch variation in Biotize and some batch variation in Cycle. The 3 methods agreed well with species identification in Biotize but generated conflicting results in the species composition of Cycle. This multi-method approach was useful in determining if the observed bacterial species present in the products matched the expected species composition.
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Affiliation(s)
- E. Nowak
- National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON L7R 4A6, Canada
- Environmental Sector, Biotechnology Research Institute, National Research Council, 6100 Royalmount Avenue, Montréal, QC H4P 2R2, Canada
- Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - R. Brousseau
- National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON L7R 4A6, Canada
- Environmental Sector, Biotechnology Research Institute, National Research Council, 6100 Royalmount Avenue, Montréal, QC H4P 2R2, Canada
- Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - J. Garrett
- National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON L7R 4A6, Canada
- Environmental Sector, Biotechnology Research Institute, National Research Council, 6100 Royalmount Avenue, Montréal, QC H4P 2R2, Canada
- Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - L. Masson
- National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON L7R 4A6, Canada
- Environmental Sector, Biotechnology Research Institute, National Research Council, 6100 Royalmount Avenue, Montréal, QC H4P 2R2, Canada
- Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - C. Maynard
- National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON L7R 4A6, Canada
- Environmental Sector, Biotechnology Research Institute, National Research Council, 6100 Royalmount Avenue, Montréal, QC H4P 2R2, Canada
- Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - J.T. Trevors
- National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON L7R 4A6, Canada
- Environmental Sector, Biotechnology Research Institute, National Research Council, 6100 Royalmount Avenue, Montréal, QC H4P 2R2, Canada
- Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - T.A. Edge
- National Water Research Institute, Environment Canada, 867 Lakeshore Road, Burlington, ON L7R 4A6, Canada
- Environmental Sector, Biotechnology Research Institute, National Research Council, 6100 Royalmount Avenue, Montréal, QC H4P 2R2, Canada
- Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
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