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Statements

Subject Item
n2:RIV%2F60461373%3A22330%2F14%3A43896665%21RIV15-MZE-22330___
rdf:type
skos:Concept n18:Vysledek
rdfs:seeAlso
http://ac.els-cdn.com/S0956713513003952/1-s2.0-S0956713513003952-main.pdf?_tid=6c76b2a2-9b1a-11e3-aa3d-00000aacb35e&acdnat=1393002534_1088cd81d69f5ebbe13ea8cec9341a64
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 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, 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. Additionally, 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 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, 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. Additionally, 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 ionization-high resolution mass spectrometry (DART-HRMS) technique: a critical assessment Authentication of milk and milk-based foods by direct analysis in real time ionization-high resolution mass spectrometry (DART-HRMS) technique: a critical assessment
skos:prefLabel
Authentication of milk and milk-based foods by direct analysis in real time ionization-high resolution mass spectrometry (DART-HRMS) technique: a critical assessment Authentication of milk and milk-based foods by direct analysis in real time ionization-high resolution mass spectrometry (DART-HRMS) technique: a critical assessment
skos:notation
RIV/60461373:22330/14:43896665!RIV15-MZE-22330___
n3:aktivita
n12:P
n3:aktivity
P(QI91B306)
n3:cisloPeriodika
1
n3:dodaniDat
n11:2015
n3:domaciTvurceVysledku
n13:4423232 n13:8580588 n13:5225434
n3:druhVysledku
n14:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
4546
n3:idVysledku
RIV/60461373:22330/14:43896665
n3:jazykVysledku
n16:eng
n3:klicovaSlova
Mass spectrometry.; Direct analysis in real time; Authenticity; Dairy products; Milk
n3:klicoveSlovo
n7:Milk n7:Mass%20spectrometry. n7:Dairy%20products n7:Authenticity n7:Direct%20analysis%20in%20real%20time
n3:kodStatuVydavatele
BE - Belgické království
n3:kontrolniKodProRIV
[19B6FF2A9D18]
n3:nazevZdroje
Food control
n3:obor
n20:GM
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n17:QI91B306
n3:rokUplatneniVysledku
n11:2014
n3:svazekPeriodika
36
n3:tvurceVysledku
Hajšlová, Jana Václavík, Lukáš Hrbek, Vojtěch Elich, Ondřej
n3:wos
000327363500022
s:issn
0956-7135
s:numberOfPages
8
n6:doi
10.1016/j.foodcont.2013.08.003
n8:organizacniJednotka
22330