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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F12%3A39895227%21RIV13-MSM-25310___
rdf:type
n8:Vysledek skos:Concept
rdfs:seeAlso
http://www.sciencedirect.com/science/article/pii/S0308814612010114
dcterms:description
In this study the modern microextraction by packed sorbent (MEPS) method followed by HPLC-UV analysis was optimised and evaluated for determination of L-ascorbic acid (AA) content in beverages. In this case 300 ?L of sample was passed through silica BIN (barrel insert and needle assembly) and entrapped AA was eluted by 60 ?L of methanol-water (10%, v/v) solution. Recovery of the proposed method for three concentration levels ranged between 97.46% and 106.88% with relative standard deviation 8.7% (low conc.), 2.49% (medium conc.) and 1.98% (high). Obtained results of AA contents in real samples were in the ranges 56.5-195.4 ?g/mL and 130.4-1090.0 ?g/mL for ice-tea and fruit juice samples, respectively. Proposed method was compared with iodometric titration and DPPH methods, but microextraction method was found to be more selective for AA determination in tested samples. In this study the modern microextraction by packed sorbent (MEPS) method followed by HPLC-UV analysis was optimised and evaluated for determination of L-ascorbic acid (AA) content in beverages. In this case 300 ?L of sample was passed through silica BIN (barrel insert and needle assembly) and entrapped AA was eluted by 60 ?L of methanol-water (10%, v/v) solution. Recovery of the proposed method for three concentration levels ranged between 97.46% and 106.88% with relative standard deviation 8.7% (low conc.), 2.49% (medium conc.) and 1.98% (high). Obtained results of AA contents in real samples were in the ranges 56.5-195.4 ?g/mL and 130.4-1090.0 ?g/mL for ice-tea and fruit juice samples, respectively. Proposed method was compared with iodometric titration and DPPH methods, but microextraction method was found to be more selective for AA determination in tested samples.
dcterms:title
Microextraction by Packed Sorbent (MEPS) as a Suitable Selective Method for L-Ascorbic Acid Determination in Beverages Microextraction by Packed Sorbent (MEPS) as a Suitable Selective Method for L-Ascorbic Acid Determination in Beverages
skos:prefLabel
Microextraction by Packed Sorbent (MEPS) as a Suitable Selective Method for L-Ascorbic Acid Determination in Beverages Microextraction by Packed Sorbent (MEPS) as a Suitable Selective Method for L-Ascorbic Acid Determination in Beverages
skos:notation
RIV/00216275:25310/12:39895227!RIV13-MSM-25310___
n8:predkladatel
n17:orjk%3A25310
n3:aktivita
n15:I n15:S
n3:aktivity
I, S
n3:cisloPeriodika
3
n3:dodaniDat
n7:2013
n3:domaciTvurceVysledku
n4:3107744 n4:6495001 n4:2804417 n4:8088462 n4:6505961
n3:druhVysledku
n14:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
150335
n3:idVysledku
RIV/00216275:25310/12:39895227
n3:jazykVysledku
n19:eng
n3:klicovaSlova
Alcohol-Free Beverages; High-Performance Liquid Chromatography; Microextraction by Packed Sorbent; L-Ascorbic Acid
n3:klicoveSlovo
n9:Microextraction%20by%20Packed%20Sorbent n9:L-Ascorbic%20Acid n9:High-Performance%20Liquid%20Chromatography n9:Alcohol-Free%20Beverages
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[FA305E5193B3]
n3:nazevZdroje
Food Chemistry
n3:obor
n13:CB
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:rokUplatneniVysledku
n7:2012
n3:svazekPeriodika
135
n3:tvurceVysledku
Ventura, Karel Pavlíková, Petra Bajerová, Petra Čížková, Andrea Adam, Martin
n3:wos
000310396700106
s:issn
0308-8146
s:numberOfPages
6
n20:doi
10.1016/j.foodchem.2012.06.039
n10:organizacniJednotka
25310