| Near-infrared (NIR) prediction of trans-fatty acids in ground cereal foods. | |
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MedLine Citation:
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PMID: 19697913 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Yookyung Kim; Sandra E Kays |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 57 ISSN: 1520-5118 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2009 Sep |
Date Detail:
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Created Date: 2009-09-16 Completed Date: 2010-01-28 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 8187-93 Citation Subset: IM |
Affiliation:
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Agricultural Research Service, United States Department of Agriculture, Athens, Georgia 30604-5677, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Cereals
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chemistry* Least-Squares Analysis Models, Statistical Sensitivity and Specificity Spectroscopy, Near-Infrared* Trans Fatty Acids / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Trans Fatty Acids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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