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Determination of some phenolic acids in Majorana hortensis by capillary electrophoresis with online electrokinetic preconcentration

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F08%3A00005794" target="_blank" >RIV/61989592:15310/08:00005794 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Determination of some phenolic acids in Majorana hortensis by capillary electrophoresis with online electrokinetic preconcentration

  • Original language description

    An online accumulation/mobilization preconcentration technique based on a dynamic pH junction technique and electrokinetic injection was employed for analysis of phenolic acids (sinapic; ferulic, coumarinic, caffeic, syringic, vanillic, and 4-hydroxybenzoic acid) in extracts from Majorana hortensis leaves. Samples were extracted by pressurized solvent extraction with acetone at 150 degrees C and 15 MPa. The capillary electrophoretic method employed 50 mmol.L-1 sodium borate, pH 9.5, as the sample electrolyte, 50 mmol.L-1 sodium phosphate, pH 2.5, as the background electrolyte, and 50 mmol.L-1 sodium phosphate, pH 2.5, with 60 mmol.L-1 sodium dodecyl sulfate as the mobilization electrolyte. The method allowed 720-fold to 5560-fold preconcentration of the phenolic acids during 30 min of electrokinetic accumulation with detection limits from 0.38 to 4.22 ng.mL(-1).

  • Czech name

    Stanovení některých fenolických kyselin v Majorana hortensis pomocí kapilární elektroforézy s online elektrokinetickou prekoncentrací

  • Czech description

    Online akumulační prekoncentrační technika založená na dynamické pH křížící technice a elektrokinetickém vstřikování byla použita pro analýzu fenolických kyselin (sinapové, ferulové, kumarové, kávové, vanilové a 4-hydroxybenzoové) v extraktech z listů Majorana hortensis. Vzorky byly extrahovány tlakovou extrakcí rozpouštědlem pomocí acetonu při 150 °C a 15 MPa. Metoda kapilární elektroforézy zahrnovala základní elektrolyt 50 mmol/L fosforečnan sodný, pH 2,5 a 50 mmol/L fosforečnanu sodného o pH 2,5 s 60mmol/L dodecylsulfátu sodného jako vodícího elektrolytu. Metoda umožnila prekoncetraci od 720x do 5560x během 30 minut elektrokinetické akumulace s detekčními limity od 0,38 do 4,22 ng/mL.

Classification

  • Type

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

  • CEP classification

    CB - Analytical chemistry, separation

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

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 Agricultural and Food Chemistry

  • ISSN

    0021-8561

  • e-ISSN

  • Volume of the periodical

    56

  • Issue of the periodical within the volume

    11

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    5

  • Pages from-to

  • UT code for WoS article

  • EID of the result in the Scopus database