Abstract
The aim of the present study was to develop a sensory method to evaluate off-odors in a package headspace relative to a reference scale. Selection of panelists was performed with a questionnaire and with the Sniffin' stick test. A 1-butanol reference scale and three types of scales (a 15-cm line, a color-graded brightness line scale and a color-graded brightness category scale) were compared. 1-butanol proved to be a reliable reference scale for the off-odor intensity in the package headspace. The type of scales did not affect the odor intensity ratings; however, the color-graded brightness line scale tended to give a greater accuracy of scored odor intensity. The color-graded brightness scale may strengthen the repeatability of the intensity measures due to the cross-modal support in the judgment processes. The method allows the conversion of intensity judgment of a package headspace to a physical intensity scale of 1-butanol and thus provides a valuable reference for comparing different package assessments over time. PRACTICAL APPLICATIONS A method for assessing off-odors in a package headspace is developed. The method development includes everything from selection and monitoring of the sensory panel to evaluation of different scaling techniques. Finally, a reliable and overtime fairly reproducible method for the evaluation of off-odors in the headspace of packages is presented.
Originalsprog | Engelsk |
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Tidsskrift | Journal of Sensory Studies |
Vol/bind | 26 |
Udgave nummer | 2 |
Sider (fra-til) | 118-127 |
Antal sider | 10 |
ISSN | 0887-8250 |
DOI | |
Status | Udgivet - 2011 |