Abstract
The main objectives were to combine knowledge gathered from the
electronic nose (EN) with traditional analytical reference methods for
measuring volatile compounds, such as sensory and headspace methods. The
impacts of different colouring agents on the sensory properties of packaging
materials when analysed by EN were determined. The first step in
investigations using the EN was optimization of sample treatment and analysis
parameters for the samples. The best resolution was achieved at 60 ° C in
20min, and the effect of humidity on the EN sensors was confirmed. A
comparison was made of three sensory methods for analysing taints of
packaging materials. The study showed that the odour of the packaging itself
was often not a reliable indication of the taint perceived in the packed
foodstuff and should be regarded only as indicative. Taints caused by
pigments of printed solid boards were analysed by EN. Twenty samples were
studied, representing unprinted solid board, lacquered solid board, offset
printed solid board with 14 different colours and offset printed, lacquered
solid board with four colours. The EN succeeded in grouping these materials
according to their colouring agents or lacquering, despite slight overlapping
of replicates, and the results appeared to reflect at least to some extent
the off-flavours perceived in sensory evaluation. The results of this study
are only indicative, because the analysis of results from different sources
or equipment requires more extensive use of statistical methods.
Original language | English |
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Pages (from-to) | 209-220 |
Journal | Food Additives and Contaminants |
Volume | 19 |
Issue number | Suppl. 1 |
DOIs | |
Publication status | Published - 2002 |
MoE publication type | A1 Journal article-refereed |
Keywords
- taint
- electronic nose
- headspace
- sensory
- board
- printing