Community Research and Development Information Service - CORDIS

Abstract

Final report on Contract SMT4-CT96-2129.

A method has been developed for the evaluation of the sensory inertness of refillable PET bottle materials. In the method the bottle materials are kept in contact with a cocktail consisting of flavour active substances, and afterwards are kept in contact with water. Flavour active substances then migrate into the water. Depending on the inertness of the bottle material the water gets more or less strong odour intensity. A procedure for the evaluation of the odour intensity is described. The odour intensities resulting from unknown samples are compared with the odour intensity resulting from a reference sample.

Four laboratories in Finland, Germany, Sweden and The Netherlands participated in an inter-laboratory study in which the new method was used. The laboratories used their ordinary sensory panels. Four different bottle materials were studied. The results from the different laboratories were quite similar. They all rated sample 1 to have the lowest and sample 4 to have the strongest odour intensity. The "true" odour intensities of the different samples were considered to be the average results across all laboratories. By this standard, none of the laboratories achieved the maximum number of "correct" results.

The repeatability in the evaluations, expressed as the test-retest correlation, was high at all laboratories. The Pearson correlation coefficient was in the range 0.930�0.964. The standard deviations of the measurements were quite large at all laboratories, indicating that there is room for improvement.

Additional information

Authors: LEUFVEN A, Swedish Institute for Food and Biotechnology (SIK), Goteborg (SE);WIDEN H, Swedish Institute for Food and Biotechnology (SIK), Goteborg (SE);HALL G, Swedish Institute for Food and Biotechnology (SIK), Göteborg (SE);LEUFVÉN A, Swedish Institute for Food and Biotechnology (SIK), Göteborg (SE);WIDÉN H, Swedish Institute for Food and Biotechnology (SIK), Göteborg (SE)
Bibliographic Reference: European Commission, DG Research, 2002. EUR 20038 EN, pp.59. (BCR Information series) Free of charge
Availability: EUR-OP reference: KI-NA-20038-EN-C Available from: Documentation Service of DG Research Fax: +32 2 295 8220 E-mail: research@ec.europa.eu
ISBN: ISBN: 92-894-3306-X
Record Number: 200215629 / Last updated on: 2003-01-16
Category: PUBLICATION
Original language: en
Available languages: en