Abstract

Mass spectrometry (MS) represents an essential tool in proteomics studies, in the last years also exploited for monitoring allergens contamination in food products. Milk and egg are renowned allergens often used as fining agents to promote clarification of wines, therefore any residual amount in the endproducts could represent a menace for allergic individuals. In view of this, it is of paramount importance to have at disposal sensitive analytical methods able to detect traces of milk and egg allergens in food. In this work we describe the upgrade and the optimization of an analytical workflow based on the use of a pre-enrichment column coupled with HPLC separation and MS/MS detection for the selective and sensitive detection of milk and egg allergens in white wine. Two different sample pre-treatments based on the use of mass cut-off filters or size exclusion cartridges were evaluated and compared, before tryptic digestion and LC-SRM-MS/MS analysis of the resulting peptides mixture. The devised UF based method coupled with peptide on-line pre-enrichment enabled to reach the lowest LODs down at 0.036 ug/mL and 0.05 ug/mL for egg and milk allergens respectively, proving to be the most sensitive strategy for monitoring allergens contamination in wine.

Autore Pugliese

• Monaci Linda , Pilolli Rosa

Tutti gli autori

• E. De Angelis; R. PILOLLI; L. Monaci

Titolo volume/Rivista

Food control

Anno di pubblicazione

2016

ISSN

0956-7135

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile