Absolute quantification method and validation of airborne snow crab allergen tropomyosin using tandem mass spectrometry

Rahman, A, Lopata, A, Randell, E and Helleur, R 2010, 'Absolute quantification method and validation of airborne snow crab allergen tropomyosin using tandem mass spectrometry', Analytica Chimica Acta, vol. 681, no. 40575, pp. 49-55.


Document type: Journal Article
Collection: Journal Articles

Title Absolute quantification method and validation of airborne snow crab allergen tropomyosin using tandem mass spectrometry
Author(s) Rahman, A
Lopata, A
Randell, E
Helleur, R
Year 2010
Journal name Analytica Chimica Acta
Volume number 681
Issue number 40575
Start page 49
End page 55
Total pages 7
Publisher Elsevier Science Bv
Abstract Measuring the levels of the major airborne allergens of snow crab in the workplace is very important in studying the prevalence of crab asthma in workers. Previously, snow crab tropomyosin (SCTM) was identified as the major aeroallergen in crab plants and a unique signature peptide was identified for this protein. The present study advances our knowledge on aeroallergens by developing a method of quantification of airborne SCTM by using isotope dilution mass spectrometry. Liquid chromatography tandem mass spectrometry was developed for separation and analysis of the signature peptides. The tryptic digestion conditions were optimized to accomplish complete digestion. The validity of the method was studied using international conference on harmonization protocol, Where 2-9% for CV (precision) and 101-110% for accuracy, at three different levels of quality control. Recovery of the spiked protein from PTFE and TopTip filters was measured to be 99% and 96%, respectively. To further demonstrate the applicability and the validity of the method for real samples, 45 kg of whole snow crab were processed in an enclosed (simulated) crab processing line and air samples were collected. The levels of SCTM ranged between 0.36-3.92gm-3 and 1.7-2.31gm-3 for butchering and cooking stations, respectively.
Subject Analytical Chemistry not elsewhere classified
Keyword(s) Major Allergen
Penaeus-Aztecus
Shrimp
Identification
Proteomics
Workers
DOI - identifier 10.1016/j.aca.2010.09.040
Copyright notice © 2010 Published by Elsevier B.V. All rights reserved
ISSN 0003-2670
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Citation counts: TR Web of Science Citation Count  Cited 26 times in Thomson Reuters Web of Science Article | Citations
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