Abstract
A competitive enzyme-linked immunosorbent assay (ELISA) was developed for quantification of Alaska pollock (AP) surimi in crabsticks. Identification of fish species is complicated by processing, cooking, and additional ingredients. ELISA is a powerful tool for identification and quantification of fish species. Polyclonal antibodies were raised in rabbits against a 15-amino-acid peptide (Ala-Pro-Lys-Lys-Asp-Val-Lys-Ala-Pro-Ala-Ala-Ala-Ala-Lys-Lys) determined from the myosin light chain 1 (MLC 1) of AP. Immunoblotting showed the anti-pep-AP antibody had no significant cross-reactivity with protein additives. However, cross-reactivity of the MLC 1 from Pacific whiting, and threadfin bream surimi was observed. MLC 1 was purified from AP surimi and used as the coating protein in the competitive ELISA. MLC 1 was serially diluted and had a R2 of 0.9845 following a logarithmic curve. All estimations of AP surimi were within 9% of the actual value. Inter-assay coefficients of variance ranged from 4.2% to 4.9%.
Original language | English |
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Pages (from-to) | 196-201 |
Number of pages | 6 |
Journal | Food Chemistry |
Volume | 123 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2010 Nov 1 |
Keywords
- Alaska pollock
- Competitive ELISA
- Crabstick
- Peptide
- Surimi
ASJC Scopus subject areas
- Analytical Chemistry
- Food Science