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Determination of free amino acids in beers: A comparison of Czech and foreign brands

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F08%3A00021102" target="_blank" >RIV/60461373:22330/08:00021102 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Determination of free amino acids in beers: A comparison of Czech and foreign brands

  • Original language description

    The content of 16 free amino acids in 35 beers commercially available in Czech Republic was measured using high-performance liquid chromatography method with pre-column derivatization by AccQ- Tag agent and separation in reverse phase column followed byfluorescent detection. Content of proline, which was the amino acid most commonly found, varied in range from 40 to 250mg/L. Czech beers were characterized by a significantly higher amino acid content in comparison to imported global brands (450.41 vs. 257.53 mg/L). Among individual amino acids, nine amino acids were significantly more concentrated in the Czech beer brands than in the studied foreign brands, and those amino acids were from three distinctive taste groups: bitter tasting amino acid (isoleucine, leucine, lysine, phenylalanine and histidine), bitter sweet amino acids (valine and proline) and salty-umami amino acids (glutamic acid and aspartic acid).

  • Czech name

    Stanovení volných aminokyselin v pivech: srovnání českých a zahraničních značek

  • Czech description

    Pomocí HPLC s předkolonovou derivatizací pomocí AccQ- Tag činidla a fluorescenční detekcí byl změřen obsah 16 aminokyselin ve vzorcích 35 piv komerčně dostupných v České republice. Obsah prolinu, který byl aminokyselinou s nejvyšší koncentrací, byl v pivech v rozmezí od 40 to 250mg/L. Česká piva byla charakteristická vyšším obsahem aminokyselin ve srovnání s dovozovými globálními značkami (450,41 vs. 257,53 mg/L). Mezi jednotlivými aminokyselinami bylo devět aminokyselin v českých pivech obsaženo ve vyšší koncentraci než ve studovaných zahraničních značkách, tyto aminokyseliny můžeme rozdělit do tří skupin podle odlišné chuti: hořce chutnající aminokyseliny (isoleucin, leucin, lysine, phenylalanin a histidin), hořko-sladké aminokyseliny (valin a prolin) a aminokyseliny se sladkou a umami chutí (glutamová kyselina a asparagová kyselina).

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    EI - Biotechnology and bionics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/1M0570" target="_blank" >1M0570: Research Centre for Study of Extract Compounds of Barley and Hop</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Food Composition and Analysis

  • ISSN

    0889-1575

  • e-ISSN

  • Volume of the periodical

    21

  • Issue of the periodical within the volume

    8

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    6

  • Pages from-to

  • UT code for WoS article

    000260070400022

  • EID of the result in the Scopus database