Document Detail

Binary taste mixture interactions in prop non-tasters, medium-tasters and super-tasters.
MedLine Citation:
PMID:  11595676     Owner:  NLM     Status:  MEDLINE    
It is generally assumed that the mutual, but asymmetric, suppression of the components in binary taste mixtures is an invariant property of the human psychophysical response to such mixtures. However, taste intensities have been shown to vary as a function of individual differences in sensitivity, indexed by the perceived bitterness of 6-n-propylthiouracil (PROP). To determine if these variations in taste perception influence taste mixture interactions, groups of PROP super-, medium- and non-tasters assessed four binary taste mixtures: sweet-bitter [sucrose/quinine hydrochloride (QHCl)], sweet-sour (sucrose/citric acid), salty-bitter (NaCl/QHCl) and salty-sour (NaCl/citric acid). In each experiment, subjects received factorial combinations of four levels of each of two tastants and rated individual taste intensities and overall mixture intensity. For each taste quality, super-tasters typically gave higher ratings than either medium- or non-tasters, who tended not to differ. There were also group differences in the interactions of the mixtures' components. Super-tasters rated the overall intensity of the mixtures, most likely reflecting integration of the taste components, as greater than medium- and non-tasters, who again showed few differences. In sweet-bitter mixtures, non-tasters failed to show the suppression of sweetness intensity by the highest QHCl concentration that was evident in super- and medium-tasters. These data show that the perception of both tastes and binary taste mixture interactions varies as a function of PROP taster status, but that this may only be evident when three taster groups are clearly distinguished from one another.
J Prescott; N Ripandelli; I Wakeling
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chemical senses     Volume:  26     ISSN:  0379-864X     ISO Abbreviation:  Chem. Senses     Publication Date:  2001 Oct 
Date Detail:
Created Date:  2001-10-11     Completed Date:  2002-01-15     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8217190     Medline TA:  Chem Senses     Country:  England    
Other Details:
Languages:  eng     Pagination:  993-1003     Citation Subset:  IM    
Sensory Science Research Centre, University of Otago, Dunedin, New Zealand Qi Statistics, King's Lynn, Norfolk, UK.
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MeSH Terms
Antimetabolites / chemistry*
Citric Acid / chemistry
Dose-Response Relationship, Drug
Propylthiouracil / chemistry*
Quinine / chemistry
Sensitivity and Specificity
Sodium Chloride / chemistry
Sucrose / chemistry*
Reg. No./Substance:
0/Antimetabolites; 130-95-0/Quinine; 51-52-5/Propylthiouracil; 57-50-1/Sucrose; 7647-14-5/Sodium Chloride; 77-92-9/Citric Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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