Journal
INTERNATIONAL DAIRY JOURNAL
Volume 18, Issue 3, Pages 303-311Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.idairyj.2007.06.009
Keywords
creaminess; stirred yogurt; sensory perceptions; instrumental measurements; diet product
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Stirred yogurts with the same chemical composition but prepared using different procedures had different gel particle diameters and different rheological characteristics. Sensorial evaluations were performed and compared with instrumental analyses. The smoothness perceived both visually and orally varied with the size of the particles of the stirred gels. For products with small particle sizes, the consistency was related to viscoelastic parameters. It was shown that products perceived as creamy were firm. When particle size was above 150 gm, it seemed impossible to perceive creaminess. Nevertheless, results obtained from two commercial products containing fat and starter showed that creaminess perception could not be reduced to simple relationships between gel firmness and particle size in the case of stirred gels. (c) 2007 Elsevier Ltd. All rights reserved.
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