Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 421330
Title A non-destructive ammonium detection method as indicator for freshness for packed fish: Application on cod
Author(s) Heising, J.K.; Dekker, M.; Bartels, P.V.; Boekel, M.A.J.S. van
Source Journal of Food Engineering 110 (2012)2. - ISSN 0260-8774 - p. 254 - 261.
Department(s) Product Design and Quality Management Group
FBR Fresh Supply Chains
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) gadus-morhua - quality - trimethylamine - spoilage - biosensor - fillets - sensor
Abstract This paper introduces a non-destructive method for monitoring headspace ammonium as an indicator for changes in the freshness status of packed fish. Electrodes in an aqueous phase in the package monitor changes in the concentration of ammonia produced in/on the packed fish and released in the headspace. The outputs of an ammonium ion-selective electrode (NH4+-ISE) were compared with the volatile amines content of the fish fillets. The method was tested in triplicate with fresh cod fillets stored between -0.5 and 1.9 °C. Changes in the ammonia content of the fish could be monitored in the aqueous phase with the NH4+-ISE. The changes in the NH4+-ISE signal correlated with the content of volatile amines (TVB-N) in the cod fillets. This non-destructive method might be the basis for the development of an intelligent packaging for monitoring freshness of packed fish.
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