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Uporaba aromatskih profilov za določanje pristnosti sadnih sokov [Elektronski vir]Košir, Iztok Jože, 1970- ; Nedeljko, Polonca ; Kolar, Mitja, kemikNamen predstavljenega dela je bil razviti analizne in kemometrijske metode, ki bi karakterizirale pristnost sadnih sokov na osnovi njihovih aromatskih profilov. Za raziskovalno delo smo uporabili ... sokove in nektarje slovenskih in tujih proizvajalcev. Izbrana tehnika vzorčenja oziroma zajemanja hlapnih komponent arome je bila mikroekstrakcija na trdnem nosilcu - SPME tehnika. Postopke vzorčenja, optimalne pogoje za ločbo in določevanje s plinsko kromatografijo z masno detekcijo smo optimirali po standardnih postopkih za tovrstne analize. Površine vrhov posameznih spojin v kromatogramih so tvorile vstopne parametre za kemometrijsko analizo (metoda glavnih osi, analiza grup in diskriminantna analiza) katere namen je bil izdelava modela, ki bo sposoben z dovolj visoko zanesljivostjo razločevati med posameznimi sadnimi sokovi. Rezultati vseh treh kemometrijskih analiz so bili najbolj primerljivi v primeru ločevanja 26 vzorcev sadnih nektarjev in v primeru, ko smo želeli med seboj razlikovati 11 vzorcev 100 % sokov pomaranč z 12 vzorci pomarančnih nektarjev. Nekoliko slabše, vendar še vedno dovolj dobre rezultate pa smo dobili pri medsebojnem ločevanju 25 vzorcev 100 % sadnih sokov in medsebojnem razločevanju med vzorci 100 % sokov jabolk in vzorci jabolčnih nektarjev.Source: Slovenski kemijski dnevi 2010, Maribor, 23. in 24. september 2010 [Elektronski vir] (7 str.)Type of material - conference contributionPublish date - 2010Language - slovenianCOBISS.SI-ID - 14434838
Author
Košir, Iztok Jože, 1970- |
Nedeljko, Polonca |
Kolar, Mitja, kemik
Topics
arome |
hlapne konponente |
sadni sok |
SPME |
GC-MS |
kemometrijske metode |
aromas |
volatile compounds |
fruit juice |
SPME |
GC-MS |
chemometrics methods
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Košir, Iztok Jože, 1970- | 17916 |
Nedeljko, Polonca | 32964 |
Kolar, Mitja, kemik | 16429 |
Source: Personal bibliographies
and: SICRIS
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