"Metabolomick\u00E9 profily (fingerprinty) p\u0159i posuzov\u00E1n\u00ED autenticity a p\u016Fvodu potravinov\u00FDch surovin a produkt\u016F" . "2010-01-01+01:00"^^ . . . . "22330" . "Metabolomic profiles (fingerprints) when assessing the authenticity and origin of raw materials and food products"@en . "5"^^ . "Metabolomic profiles (fingerprints) when assessing the authenticity and origin of raw materials and food products"@en . "270581" . . "Skalsk\u00FD Dv\u016Fr" . "Praha" . . . . . "Haj\u0161lov\u00E1, Jana" . "Hrbek, Vojt\u011Bch" . "RIV/60461373:22330/10:00023846" . "V\u00E1clav\u00EDk, Luk\u00E1\u0161" . . "XL. Symposium o nov\u00FDch sm\u011Brech v\u00FDroby a hodnocen\u00ED potravin" . . . "[DA5F0766378D]" . "4"^^ . . "Metabolomick\u00E9 profily (fingerprinty) p\u0159i posuzov\u00E1n\u00ED autenticity a p\u016Fvodu potravinov\u00FDch surovin a produkt\u016F" . . . . . "RIV/60461373:22330/10:00023846!RIV11-MZE-22330___" . . "autenticity; DART-TOFMS; fats"@en . "Metabolomick\u00E9 profily (fingerprinty) p\u0159i posuzov\u00E1n\u00ED autenticity a p\u016Fvodu potravinov\u00FDch surovin a produkt\u016F"@cs . "Autenticita a p\u016Fvod potravin jsou v\u00FDznamn\u00FDmi kvalitativn\u00EDmi parametry, na n\u011B\u017E je v posledn\u00ED dob\u011B kladen velk\u00FD d\u016Fraz. Kontroln\u00ED org\u00E1ny a spot\u0159ebitel\u00E9 po\u017Eaduj\u00ED st\u00E1le v\u00EDce informace o potravin\u00E1ch, kter\u00E9 jsou distribuov\u00E1ny na trh. Vedle odhalovan\u00ED fal\u0161ov\u00E1n\u00ED potravin podvodn\u00FDmi v\u00FDrobci za \u00FA\u010Delem ekonomick\u00E9ho zisku (nap\u0159. p\u0159\u00EDm\u011Bs\u00ED levn\u011Bj\u0161\u00ED slo\u017Eky) je u mnoha skupin potravin nutn\u00E9 kontrolovat tak\u00E9 jejich geografick\u00FD p\u016Fvod, kter\u00FD \u010Dasto rozhoduje o kvalit\u011B a/nebo cen\u011B produktu. Tato pr\u00E1ce je zam\u011B\u0159ena na vyu\u017Eit\u00ED nov\u00E9 ioniza\u010Dn\u00ED techniky, p\u0159\u00EDm\u00E9 anal\u00FDzy v re\u00E1ln\u00E9m \u010Dase (direct analysis in real time, DART) ve spojen\u00ED s hmotnostn\u00EDm detektorem s analyz\u00E1torem doby letu (time-of-flight mass spektrometry, TOFMS) pro posuzov\u00E1n\u00ED autenticity a p\u016Fvodu potravin na z\u00E1klad\u011B profilu n\u00EDzkomolekul\u00E1rn\u00EDch l\u00E1tek (metabolomick\u00E9mu profilu). V\u00FDhodou t\u00E9to techniky je minim\u00E1ln\u00ED p\u0159\u00EDprava vzorku (rozpu\u0161t\u011Bn\u00ED v toluenu nebo extrakce sm\u011Bs\u00ED methanol-voda) pro z\u00EDsk\u00E1n\u00ED metabolomick\u00FDch profil\u016F triacylglacerol\u016F (TAG) nebo pol\u00E1rn\u00EDch l\u00E1tek (minoritn\u00ED" . "Metabolomick\u00E9 profily (fingerprinty) p\u0159i posuzov\u00E1n\u00ED autenticity a p\u016Fvodu potravinov\u00FDch surovin a produkt\u016F"@cs . "The authenticity of foods is an important qualitative parameter. The present study deals with utilization of novel ionization technique, direct analysis in real time (DART), coupled to time-of-flight mass spectrometry (TOFMS) for rapid assessment of animal fats authenticity (lard, beef tallow and fish oil). Employing minimal sample preparation (dilution in toluene or extraction with methanol?water mixture), profiles of triacylglycerols (TAGs) and some minor compounds were obtained by DART?TOFMS analysis of samples. To explore the potential of DART?TOFMS for detection of lard adulteration with beef tallow, also model admixtures of selected samples were prepared and examined. The internal structure of obtained data (mass spectral fingerprints) was inspected with the use of principal component analysis (PCA). In the next step, linear discriminant analysis (LDA) was employed for sample classification. The best results were observed when profiles of TAGs were used as input data for LDA (both prediction and"@en . "Autenticita a p\u016Fvod potravin jsou v\u00FDznamn\u00FDmi kvalitativn\u00EDmi parametry, na n\u011B\u017E je v posledn\u00ED dob\u011B kladen velk\u00FD d\u016Fraz. Kontroln\u00ED org\u00E1ny a spot\u0159ebitel\u00E9 po\u017Eaduj\u00ED st\u00E1le v\u00EDce informace o potravin\u00E1ch, kter\u00E9 jsou distribuov\u00E1ny na trh. Vedle odhalovan\u00ED fal\u0161ov\u00E1n\u00ED potravin podvodn\u00FDmi v\u00FDrobci za \u00FA\u010Delem ekonomick\u00E9ho zisku (nap\u0159. p\u0159\u00EDm\u011Bs\u00ED levn\u011Bj\u0161\u00ED slo\u017Eky) je u mnoha skupin potravin nutn\u00E9 kontrolovat tak\u00E9 jejich geografick\u00FD p\u016Fvod, kter\u00FD \u010Dasto rozhoduje o kvalit\u011B a/nebo cen\u011B produktu. Tato pr\u00E1ce je zam\u011B\u0159ena na vyu\u017Eit\u00ED nov\u00E9 ioniza\u010Dn\u00ED techniky, p\u0159\u00EDm\u00E9 anal\u00FDzy v re\u00E1ln\u00E9m \u010Dase (direct analysis in real time, DART) ve spojen\u00ED s hmotnostn\u00EDm detektorem s analyz\u00E1torem doby letu (time-of-flight mass spektrometry, TOFMS) pro posuzov\u00E1n\u00ED autenticity a p\u016Fvodu potravin na z\u00E1klad\u011B profilu n\u00EDzkomolekul\u00E1rn\u00EDch l\u00E1tek (metabolomick\u00E9mu profilu). V\u00FDhodou t\u00E9to techniky je minim\u00E1ln\u00ED p\u0159\u00EDprava vzorku (rozpu\u0161t\u011Bn\u00ED v toluenu nebo extrakce sm\u011Bs\u00ED methanol-voda) pro z\u00EDsk\u00E1n\u00ED metabolomick\u00FDch profil\u016F triacylglacerol\u016F (TAG) nebo pol\u00E1rn\u00EDch l\u00E1tek (minoritn\u00ED"@cs . "P(QI91B306)" . "Pipek, Petr" . . . "Rohl\u00EDk, Bo-Anne" . . "1802-1433" . "5"^^ . "V\u00DAPP" .