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The Effect of Sucrose and Fat in Cookies on Salivation and Oral Retention in Humans

Forsyth Dental Center, 140 The Fenway, Boston, Massachusetts 02115

S. Kashket

Forsyth Dental Center, 140 The Fenway, Boston, Massachusetts 02115

R.L. Kent, Jr

Forsyth Dental Center, 140 The Fenway, Boston, Massachusetts 02115

Six adults were served accurately weighed portions (about 5 g) of cookies varying in sucrose and fat content. The cookies were chewed and spat out at the time the subjects were ready to swallow. Additional spittings were collected at intervals up to two, three, and four min. Chewing time decreased with increase in sucrose, or with increase in fat. The volume of saliva in each spitting was calculated from its wet and dry weights, and it was assumed either (a) that saliva produced during chewing was not carried over in the retained food, or (b) that saliva was incorporated in the retained food in the same proportion as in the first spitting. Both approaches revealed that salivary flow rates were independent of cookie formulation, with two exceptions: (1) The cookie highest in sucrose produced a significantly higher flow rate during chewing, and (2) the fat-free cookie, which was hard to chew, elicited an elevated flow rate up to two min. The total volume of saliva for the entire experimental period was similar for all formulations, except the latter. Masticatory effects, therefore, appeared to predominate over sweetness stimulation, unless sugar content was very high.

The volume of saliva in the food bolus at the time of swallowing correlated with chewing time. Oral clearance of the cookies did not give straight lines when logarithms of retained material were plotted against time. Initial clearance rates appeared to diminish with increasing sucrose and fat content of the cookies. Effects of sugars and fat on all parameters may reflect changes in cookie texture and the sizes of particles produced within the mouth.

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Journal of Dental Research, Vol. 69, No. 6, 1278-1282 (1990)
DOI: 10.1177/00220345900690061101


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Brudevold, F. Articles by Kent, R.L. Search for Related Content PubMed PubMed Citation Articles by Brudevold, F. Articles by Kent, R.L., Jr Social Bookmarking                         What's this?