Document Detail


Evaluating the ability of different characterization parameters to describe the surface of fried foods.
MedLine Citation:
PMID:  20626039     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The objective of this work is to identify surface topography characterization parameters that are capable of discriminating the surfaces of different fried foods. Three fried food model systems with clearly different surfaces were formulated from vital wheat gluten, native wheat starch, and potato flakes. The surfaces were measured with a scanning laser microscope (SLM), and the ability of several parameters to discriminate between them was tested. Two conventional parameters, the root mean square roughness (Sq) and the surface Kurtosis (Sku), were calculated, along with parameters derived from area-scale fractal analysis: smooth-rough crossover (SRC), fractal dimension, and relative area as a function of scale. The coefficient of variation (COV) of Sq, Sku, and SRC and fractal dimension of different sizes of measurement regions were calculated for the surface of the roughest product in order to specify a measurement region that would be sufficiently large to be representative. The size of the representative region was found to be 25 mm². Among the parameters evaluated in this study, the most reliable parameter for discriminating the surfaces of fried foods is the relative area calculated from area-scale fractal analysis.
Authors:
María Carolina Moreno; Pedro Bouchon; Christopher A Brown
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Scanning     Volume:  32     ISSN:  1932-8745     ISO Abbreviation:  Scanning     Publication Date:    2010 Jul-Aug
Date Detail:
Created Date:  2010-10-15     Completed Date:  2011-01-24     Revised Date:  2011-05-17    
Medline Journal Info:
Nlm Unique ID:  7903371     Medline TA:  Scanning     Country:  United States    
Other Details:
Languages:  eng     Pagination:  212-8     Citation Subset:  IM    
Copyright Information:
© 2010 Wiley Periodicals, Inc.
Affiliation:
Department of Chemical and Bioprocess Engineering, Pontificia Universidad Católica de Chile, Chile. mmoreno@uc.cl
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MeSH Terms
Descriptor/Qualifier:
Food Analysis / methods*
Microscopy, Confocal
Solanum tuberosum / ultrastructure*
Surface Properties
Triticum / ultrastructure*

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


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