Robust conditioned flavor preference produced by intragastric starch infusions in rats

Rats were intragastrically infused with hydrolyzed starch (16% Polycose) or water as they drank cherry- or grape-flavored water during 23-h/day tests; chow was available ad libitum. After 4 conditioning days the rats displayed a near-total preference (96%) for the starch-paired flavor over the water...

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Bibliographic Details
Published inThe American journal of physiology Vol. 255; no. 4 Pt 2; p. R672
Main Authors Sclafani, A, Nissenbaum, J W
Format Journal Article
LanguageEnglish
Published United States 01.10.1988
Subjects
Animals
Conditioning (Psychology)
Enteral Nutrition
Female
Food Preferences - drug effects
Rats
Reference Values
Starch - administration & dosage
Starch - pharmacology
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Summary:Rats were intragastrically infused with hydrolyzed starch (16% Polycose) or water as they drank cherry- or grape-flavored water during 23-h/day tests; chow was available ad libitum. After 4 conditioning days the rats displayed a near-total preference (96%) for the starch-paired flavor over the water-paired flavor in two-choice tests. This conditioned flavor preference persisted during a 4-day extinction test when both flavors were paired with water infusions. The results demonstrate that the postingestive actions of starch are rewarding to nondeprived rats and can condition strong and long-lasting flavor preferences.
ISSN:0002-9513
DOI:10.1152/ajpregu.1988.255.4.R672