Community Research and Development Information Service - CORDIS


Final report on Contract no. SMT4-CT96-2129

A method has been developed for the evaluation of the sensory inertness of refillable PET bottle materials. In the method there is one initial "loading" step in which bottle materials are kept in contact with a cocktail consisting of flavour active substances. During the next step the bottle material is 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 results from the different laboratories were quite similar, and the repeatability in the evaluations was high at all laboratories.

A study of two reproducibility measures tested the ability of the individual laboratories to classify the samples and to assess the odour intensities in relation to the average results obtained. None of the laboratories achieved a perfect score, and the standard deviations of the measurements were quite large at all the laboratories, since the judges in the odour evaluation panels had no particular skills or training in this task. These facts indicate that there is room for improvements.

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: EUR 20038 EN (2002), pp.59. Euro: Free of charge
Availability: EUR-OP reference: KI-NA-20038-EN-C Available from: Documentation Service of DG Research Fax:+32-2-29-58220 E-mail:
ISBN: ISBN: 92-894-3306-X
Record Number: 200214805 / Last updated on: 2002-06-11
Original language: en
Available languages: en
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