Document Detail


Near-infrared (NIR) prediction of trans-fatty acids in ground cereal foods.
MedLine Citation:
PMID:  19697913     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Near-infrared (NIR) reflectance spectroscopy was evaluated as a rapid method for prediction of trans-fatty acid content in ground cereal products without the need for oil extraction. NIR spectra (400-2498 nm) of ground cereal products were obtained with a dispersive NIR spectrometer and correlated to trans- and cis-fatty acid content determined by a modification of AOAC Method 996.01. Partial least-squares regression and Marten's uncertainty test were applied to calculate models for prediction of trans-fatty acids using spectral regions affected by lipid absorption. The best model (n = 84) for trans-fat prediction used the 700-2498 nm region and second-derivative processing of spectra. When used to predict test samples (n = 27) the model had an RPD of 4.8 with a standard error of performance of 0.70% (range of 0.05-11.74%) and r(2) of 0.97. Optimum models for cis-fatty acids were developed with the 1100-2498 and 700-2498 nm ranges and had an RPD of 4.0. Regression coefficients indicated that useful absorbance for prediction of trans- and cis-fatty acids was in the overtone and combination regions for lipid absorption.
Authors:
Yookyung Kim; Sandra E Kays
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  57     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-09-16     Completed Date:  2010-01-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8187-93     Citation Subset:  IM    
Affiliation:
Agricultural Research Service, United States Department of Agriculture, Athens, Georgia 30604-5677, USA.
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MeSH Terms
Descriptor/Qualifier:
Cereals / chemistry*
Least-Squares Analysis
Models, Statistical
Sensitivity and Specificity
Spectroscopy, Near-Infrared*
Trans Fatty Acids / analysis*
Chemical
Reg. No./Substance:
0/Trans Fatty Acids

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


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