Acta Alimentaria
Volume/Issue:
Volume 40: Issue Issue Supplement-1
Prediction of carrot sensory attributes by mechanical tests and electronic tongue
Authors: T. Kaszab 1 , Z. Kovács 1 , D. Szöllősi 1 , and A. Fekete 1
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  • 1 Corvinus University of Budapest Department of Physics and Control, Faculty of Food Science H-1118 Budapest Somlói út 14-16 Hungary
DOI:
https://doi.org/10.1556/aalim.40.2011.suppl.5
Page Count:
41–58
Publication Date:
01 Jan 2011
Online Publication Date:
07 Sep 2011
Article Category:
Research Article
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The objective of the work reported was to predict some sensory attributes of carrots stored under non-ideal conditions from the data obtained on taste measured by electronic tongue and on the physical properties (acoustic stiffness, cutting force, deformation work ratio and luminosity). There was a close correlation between the mechanical characteristics and the non-ideal storage time. Sensory evaluation showed significant ranking in “bite and chewing”, “sweet taste” and “global impression” attributes according to the Page test. Principal component analysis (PCA) plots were determined for the acoustic stiffness coefficient, cutting force and deformation work ratio and these showed that PC1 followed a tendency similar to that of the storage time. PCA plots were determined for the electronic tongue measurements and this PCA separated the sample groups along PC1 and PC2. We used partial least square (PLS) regression to predict “bite and chewing” from the acoustic stiffness coefficient, cutting force, and deformation work ratio with an acceptable correlation. The “sweet taste” was predicted from the electronic tongue measurement results with good correlation. The “global impression” was predicted by the acoustic stiffness coefficient, cutting force and deformation work ratio, and by the electronic tongue measurement results with close correlation.

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Cover Acta Alimentaria
Acta Alimentaria
Print ISSN:
0139-3006
Online ISSN:
1588-2535
Keywords:
PLS prediction; sensory evaluation; acoustic stiffness; cutting force; deformation work ratio; carrot; electronic tongue

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