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Comparison of a trained sensory panel and an electronic tongue in the assessment of bitter dairy protein hydrolsates

Newman, J., Harbourne, N., O'Riordan, D., Jacquier, J. C. and O'Sullivan, M. (2013) Comparison of a trained sensory panel and an electronic tongue in the assessment of bitter dairy protein hydrolsates. Journal of Food Engineering, 128. pp. 127-131. ISSN 0260-8774

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To link to this item DOI: 10.1016/j.jfoodeng.2013.12.019

Abstract/Summary

The bitter taste elicited by dairy protein hydrolysates (DPH) is a renowned issue for their acceptability by consumers and therefore incorporation into foods. The traditional method of assessment of taste in foods is by sensory analysis but this can be problematic due to the overall unpleasantness of the samples. Thus, there is a growing interest into the use of electronic tongues (e-tongues) as an alternative method to quantify the bitterness in such samples. In the present study the response of the e-tongue to the standard bitter agent caffeine and a range of both casein and whey based hydrolysates was compared to that of a trained sensory panel. Partial least square regression (PLS) was employed to compare the response of the e-tongue and the sensory panel. There was strong correlation shown between the two methods in the analysis of caffeine (R2 of 0.98) and DPH samples with R2 values ranging from 0.94-0.99. This study exhibits potential for the e-tongue to be used in bitterness screening in DPHs to reduce the reliance on expensive and time consuming sensory panels.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Research Group
ID Code:35675
Publisher:Elsevier

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