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Taste Perception And Food Choices.
MedLine Citation:
PMID:  22197939     Owner:  NLM     Status:  Publisher    
OBJECTIVES:: The extent to which variation in taste perception influences food preferences is to date controversial. Bitterness in food triggers an innate aversion responsible for dietary restriction in children. We investigated the association between genetic variations in bitter receptor TAS2R38 and food choices in healthy children in the Mediterranean area, in order to develop appropriate tools to evaluate the relationship between genetic predisposition, dietary habits and feeding disorders.The aim of the study is to get a first baseline picture of taste sensitivity in healthy adults and their children, but also to explore taste sensitivity in a preliminary sample of obese children as well in samples affected by functional gastrointestinal diseases. METHODS:: Individuals (98 children, 87 parents, 120 adults) were recruited from the general population in southern Italy. Bitterness sensitivity was assessed by means of a suprathreshold method with 6-propyl-2-thiouracil (PROP). Genomic DNA from saliva was used to genotype individuals for three polymorphisms of TAS2R38 receptor, A49P, A262 V, V296I. Food intake was assessed by a food frequency questionnaire. RESULTS:: Children's taste sensation differed from that of adults: we observed a higher frequency of super-tasters among children even in the mother-child couples with the same diplotypes. Among adults, supertaster status was related with PAV (taster allele) homozygous haplotype, whereas super-tasters children were mainly heterozygous. Regarding the food choices we found that a higher percentage of taster children avoided bitter vegetables or greens at all compared to taster adults. Taster status was also associated with BMI in boys. CONCLUSIONS:: Greater sensitivity to PROP predicts lower preferences for vegetables in children, showing an appreciable effect of the genetic predisposition on food choices. None of the obese boys was supertaster.
Rossella Negri; Mariarosaria Di Feola; Simone Di Domenico; M Giuseppa Scala; Ginevra Artesi; Serena Valente; Andrea Smarrazzo; Francesca Turco; Gabriella Morini; Luigi Greco
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-23
Journal Detail:
Title:  Journal of pediatric gastroenterology and nutrition     Volume:  -     ISSN:  1536-4801     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8211545     Medline TA:  J Pediatr Gastroenterol Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
*Department of Pediatrics - University of Naples Federico II, Naples, Italy †European Laboratory for Food Induced Diseases (ELFID)- University of Naples Federico II, Naples, Italy ‡University of Gastronomic Sciences, Pollenzo-Bra (CN), Italy.
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