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Influence of variation in methodology on the reliability of the isoelectric focusing method of fish species identification

AuthorsRehbein, Hartmut; Pérez Martín, Ricardo Isaac
Issue Date1995
CitationFood Chemistry 52(2): 193-197 (1995)
AbstractThe reliability of isoelectric focusing (IEF) of sarcoplasmic proteins for fish species identification was evaluated by a collaborative study among eight European laboratories. Each laboratory used its own method of IEF to identify 10 unknown samples of raw muscle by means of reference material. In 93% of cases the assignment between sample and reference was correct. In a second study, the influence of extractant (water, low ionic strength buffer, or detergent) and the position of sample application on the protein pattern was examined. Working with light muscle of rainbow trout (Oncorhynchus mykiss), it was found that the type of extractant did not influence the protein pattern. Comparison of the patterns of samples, which had been applied near the anode, in the middle, or near the cathode, revealed differences in the number and nosition of the nrotein bands under the experimental conditions applied by most laboratories. T-his effect was not observed with the Phast System.
Description5 páginas, 5 tablas, 2 figuras.-- H. Rehbein ... et al.
Publisher version (URL)http://dx.doi.org/10.1016/0308-8146(94)P4203-R
Appears in Collections:(IIM) Artículos
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