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Statements

Subject Item
n2:RIV%2F26722861%3A_____%2F14%3A%23EL61%21RIV15-MZE-26722861
rdf:type
skos:Concept n16:Vysledek
rdfs:seeAlso
http://www.sciencedirect.com/science/article/pii/S0956713513003952
dcterms:description
The potential of direct analysis in real time (DART) ambient ionization technique coupled with high resolution mass spectrometry (HRMS) in authentication of milk and dairy products was critically assessed. In particular case, DART–HRMS was used for several scenarios: (i) discrimination among milks obtained from various farm animal species - cow, goat, and sheep; (ii) discrimination between cows´ milk produced in conventional and organic farming, and, (iii) detection of vegetable oil added to a milk-based product (soft cheese). For this purpose, a rapid profiling procedure based on examination of milk/cheese toluene extracts, was implemented. The obtained triacylglycerol (TAG) profiles (mass spectra) were processed with both principal component analysis (PCA) and linear discriminant analysis (LDA). Based on LDA model, reliable differentiation of cows´ milk samples and goats’/sheep’s milk was possible. The DART–HRMS procedure also allowed distinguishing milk mixtures prepared at adulteration level of 50% (v/v). The capability to recognize milk from conventional and organic farming was rather low, rather poor classification rates of the LDA model were obtained. On the other hand, reliable detection of the presence of vegetable oils (rapeseed, sunflower, and soybean), added to soft cheese at amount as low as 1% (w/w), was possible. Last but not least, the quality of added oil in terms of degree of its oxidation could be documented. The potential of direct analysis in real time (DART) ambient ionization technique coupled with high resolution mass spectrometry (HRMS) in authentication of milk and dairy products was critically assessed. In particular case, DART–HRMS was used for several scenarios: (i) discrimination among milks obtained from various farm animal species - cow, goat, and sheep; (ii) discrimination between cows´ milk produced in conventional and organic farming, and, (iii) detection of vegetable oil added to a milk-based product (soft cheese). For this purpose, a rapid profiling procedure based on examination of milk/cheese toluene extracts, was implemented. The obtained triacylglycerol (TAG) profiles (mass spectra) were processed with both principal component analysis (PCA) and linear discriminant analysis (LDA). Based on LDA model, reliable differentiation of cows´ milk samples and goats’/sheep’s milk was possible. The DART–HRMS procedure also allowed distinguishing milk mixtures prepared at adulteration level of 50% (v/v). The capability to recognize milk from conventional and organic farming was rather low, rather poor classification rates of the LDA model were obtained. On the other hand, reliable detection of the presence of vegetable oils (rapeseed, sunflower, and soybean), added to soft cheese at amount as low as 1% (w/w), was possible. Last but not least, the quality of added oil in terms of degree of its oxidation could be documented.
dcterms:title
Authentication of milk and milk-based foods by direct analysis in real time ionizationehigh resolution mass spectrometry (DART-HRMS) technique: A critical assessment Authentication of milk and milk-based foods by direct analysis in real time ionizationehigh resolution mass spectrometry (DART-HRMS) technique: A critical assessment
skos:prefLabel
Authentication of milk and milk-based foods by direct analysis in real time ionizationehigh resolution mass spectrometry (DART-HRMS) technique: A critical assessment Authentication of milk and milk-based foods by direct analysis in real time ionizationehigh resolution mass spectrometry (DART-HRMS) technique: A critical assessment
skos:notation
RIV/26722861:_____/14:#EL61!RIV15-MZE-26722861
n4:aktivita
n19:P
n4:aktivity
P(QI91B306)
n4:cisloPeriodika
1
n4:dodaniDat
n8:2015
n4:domaciTvurceVysledku
n14:1471481
n4:druhVysledku
n17:J
n4:duvernostUdaju
n6:S
n4:entitaPredkladatele
n13:predkladatel
n4:idSjednocenehoVysledku
4545
n4:idVysledku
RIV/26722861:_____/14:#EL61
n4:jazykVysledku
n11:eng
n4:klicovaSlova
Milk; Dairy products; Authenticity; Direct analysis in real time; Mass Spectrometry
n4:klicoveSlovo
n10:Mass%20Spectrometry n10:Dairy%20products n10:Milk n10:Authenticity n10:Direct%20analysis%20in%20real%20time
n4:kodStatuVydavatele
BE - Belgické království
n4:kontrolniKodProRIV
[895187A6385F]
n4:nazevZdroje
Food Control
n4:obor
n12:GM
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
4
n4:projekt
n18:QI91B306
n4:rokUplatneniVysledku
n8:2014
n4:svazekPeriodika
36
n4:tvurceVysledku
Hajšlová, J. Elich, Ondřej Hrbek, V. Václavík, L.
s:issn
0956-7135
s:numberOfPages
8
n5:doi
10.1016/j.foodcont.2013.08.003