Document Detail


EVALUATION OF FT-NIR AND ATR-FTIR SPECTROSCOPY TECHNIQUES FOR DETERMINATION OF MINOR ODD AND BRANCHED CHAIN SATURATED AND TRANS UNSATURATED MILK FATTY ACIDS.
MedLine Citation:
PMID:  23419189     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Determination of nutritionally important trans MUFA, CLA and OBCFA milk fatty acids (often present in amounts lower than 1.0 g/100g of total fat) using fast and non-destructive analytical methods would enhance their use as diagnostic tools in dairy herd and human health management. Here, PLS regression using ATR/FTIR spectra indicated potential for determination of trans-11 C18:1 and trans-12 C18:1 (Rcv2≥0.80), trans-9 C18:1 in very minor concentration (Rcv2>0.82), as well as for anteiso C15:0 (Rcv2=0.57) and iso C17:0 (Rcv2=0.61). Furthermore, the main cis-9, trans-11 CLA isomer was predicted well despite the high trans MUFA concentration. Differentiation between the CLA and the trans MUFA signals was evident (based on specific cis/trans bands), as well as branched chain saturated fatty acid methyl esters revealed specific iso and anteiso ATR/FTIR absorbance bands. None of the minor FA PLS results with FT-NIR showed interesting potential, except satisfactory predictions for trans-9 C18:1 and cis-9, trans-11 CLA. Overall ATR/FTIR resulted in better calibrations and provided more specific information for determination of minor milk fatty acids.
Authors:
Ivan Valentinov Stefanov; Vincent Paul Baeten; Ouissam Abbas; Bruno Vlaeminck; Bernard De Baets; Veerle Fievez
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-19
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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