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Detection of cow milk in donkey milk by chemometric procedures on triacylglycerol stereospecific analysis results

Published online by Cambridge University Press:  21 July 2011

Lina Cossignani ,
Francesca Blasi ,
Ancilla Bosi ,
Gilda D'Arco ,
Silvia Maurelli ,
Maria Stella Simonetti  and
Pietro Damiani
Lina Cossignani
Affiliation:
Dipartimento di Scienze Economico-Estimative e degli Alimenti, Sezione di Chimica Bromatologica, Biochimica, Fisiologia e Nutrizione, Università degli Studi di Perugia, Via San Costanzo, 06126, Perugia, Italy
Francesca Blasi
Affiliation:
Dipartimento di Scienze Economico-Estimative e degli Alimenti, Sezione di Chimica Bromatologica, Biochimica, Fisiologia e Nutrizione, Università degli Studi di Perugia, Via San Costanzo, 06126, Perugia, Italy
Ancilla Bosi
Affiliation:
Dipartimento di Scienze Economico-Estimative e degli Alimenti, Sezione di Chimica Bromatologica, Biochimica, Fisiologia e Nutrizione, Università degli Studi di Perugia, Via San Costanzo, 06126, Perugia, Italy
Gilda D'Arco
Affiliation:
Dipartimento di Scienze Economico-Estimative e degli Alimenti, Sezione di Chimica Bromatologica, Biochimica, Fisiologia e Nutrizione, Università degli Studi di Perugia, Via San Costanzo, 06126, Perugia, Italy
Silvia Maurelli
Affiliation:
Dipartimento di Scienze Economico-Estimative e degli Alimenti, Sezione di Chimica Bromatologica, Biochimica, Fisiologia e Nutrizione, Università degli Studi di Perugia, Via San Costanzo, 06126, Perugia, Italy
Maria Stella Simonetti
Affiliation:
Dipartimento di Scienze Economico-Estimative e degli Alimenti, Sezione di Chimica Bromatologica, Biochimica, Fisiologia e Nutrizione, Università degli Studi di Perugia, Via San Costanzo, 06126, Perugia, Italy
Pietro Damiani*
Affiliation:
Dipartimento di Scienze Economico-Estimative e degli Alimenti, Sezione di Chimica Bromatologica, Biochimica, Fisiologia e Nutrizione, Università degli Studi di Perugia, Via San Costanzo, 06126, Perugia, Italy
*
*For correspondence; e-mail: chimbrom@unipg.it; coslina@unipg.it
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Abstract

Stereospecific analysis is an important tool for the characterization of lipid fraction of food matrices, and also of milk samples. The results of a chemical-enzymatic-chromatographic analytical method were elaborated by chemometric procedures such as linear discriminant analysis (LDA) and artificial neural network (ANN). According to the total composition and intrapositional fatty acid distribution in the triacylglycerol (TAG) backbone, the obtained results were able to characterize pure milk samples and milk mixtures with 1, 3, 5% cow milk added to donkey milk. The resulting score was very satisfactory. Totally correct classified samples were obtained when the TAG stereospecific results of all the considered milk mixtures (donkey-cow) were elaborated by LDA and ANN chemometric procedures.

Keywords

Donkey milkcow milktriacylglycerol stereospecific analysislinear discriminant analysisartificial neural network
Type
Research Article
Information
Journal of Dairy Research , Volume 78 , Issue 3 , August 2011 , pp. 335 - 342
Copyright
Copyright © Proprietors of Journal of Dairy Research 2011

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