Journal ArticleDOI
Simultaneous gas chromatographic determination of food preservatives following solid-phase extraction
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TLDR
In this article, a simultaneous method for the solid-phase extraction of five preservatives is presented, where samples are inserted into the flow system at pH 1, which results in increased selectivity.About:
This article is published in Journal of Chromatography A.The article was published on 1998-10-09. It has received 43 citations till now. The article focuses on the topics: Solid phase extraction & Extraction (chemistry).read more
Citations
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Journal ArticleDOI
Gas chromatographic flow method for the preconcentration and simultaneous determination of antioxidant and preservative additives in fatty foods
TL;DR: A partially automated gas chromatographic method for the simultaneous determination of antioxidants and preservatives in fatty foods without derivatization and permits the unequivocal identification of all the additives.
Journal ArticleDOI
Simultaneous determination of sorbic and benzoic acids in food dressing by headspace solid-phase microextraction and gas chromatography.
Chunzhou Dong,Yong Mei,Lin Chen +2 more
TL;DR: A facile headspace solid-phase microextraction (HS-SPME) procedure using 85 microm polyacrylate (PA) fiber is presented for the simultaneous determination of preservatives (sorbic and benzoic acids) in food dressing by gas chromatography (GC) with flame ionization detector (FID).
Journal ArticleDOI
Simultaneous determination of preservatives in soft drinks, yogurts and sauces by a novel solid-phase extraction element and thermal desorption-gas chromatography.
TL;DR: A novel solid-phase extraction element combined with thermal desorption-gas chromatography (TD-GC) using a pyrolysis-GC system was applied for the determination of the five preservatives in soft drinks, yogurts and sauces, and the linearity of the method was satisfactory over a concentration range.
Journal ArticleDOI
Headspace solid-phase microextraction applied to the simultaneous determination of sorbic and benzoic acids in beverages
Chunzhou Dong,Wenfang Wang +1 more
TL;DR: In this paper, a headspace solid-phase microextraction (HS-SPME) method was developed for the simultaneous determination of sorbic and benzoic acids in beverages, where the analytes were collected from the headspace by using a 65-μm polydimethylsiloxane-divinylbenzene (PDMS-DVB) coated fiber and determined by gas chromatography with flame ionization detector (GC-FID).
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Dispersive liquid-liquid microextraction followed by high-performance liquid chromatography for determination of benzoate and sorbate in yogurt drinks and method optimization by central composite design.
Marzieh Kamankesh,Abdorreza Mohammadi,Zohreh Modarres Tehrani,Roohallah Ferdowsi,Hedayat Hosseini +4 more
TL;DR: A comparison of this method with previous methods demonstrated that the proposed method is an accurate, rapid and reliable sample-pretreatment method that gives very good enrichment factors and detection limits for extracting and determining sorbate and benzoate in yogurt drink samples.
References
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Journal ArticleDOI
A review of solid phase extraction : basic principles and new developments
TL;DR: A review with 178 references on the basic principles and recent developments in the solid phase extraction is presented in this article, where new solid phases, chromatographic modes, experimental configurations and off-line and on-line automated devices are discussed.
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Simultaneous determination of sorbic acid, benzoic acid and parabens in foods: A new gas chromatography‐mass spectrometry technique adopted in a survey on Italian foods and beverages
TL;DR: A gas chromatographic-mass spectrometric technique is described for the simultaneous determination of sorbates, benzoates and other lipophilic preservatives in foods and beverages, and the selected ions monitoring (SIM) technique allowed unambiguous identification of the compounds under study.
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Simultaneous determination of preservatives, sweeteners and antioxidants in foods by paired-ion liquid chromatography
Bing-Huei Chen,S. C. Fu +1 more
TL;DR: In this paper, a reversed-phase high-performance liquid chromatographic method was developed for the simultaneous determination of sweeteners (dulcin, saccharin-Na and acesulfame-K), preservatives (sodium dehydroacetate, sorbic acid, salicyclic acid and benzoic acid), and antioxidants (3-tertiary-butyl-4-hydroxyanisole and tertiary butyl-hydroquinone).
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Ion-exchange high-performance liquid chromatography in the brewing industry
H. Klein,R. Leubolt +1 more
TL;DR: Isocratic HPLC methods using an ion-exchange column (Aminex HPX) for the determination of carbohydrates, organic acids, alcohols (methanol, ethanol, glycerol), 5-hydroxymethylfurfural and purines in wort, beer, wine and soft drinks are presented in this paper.
Journal ArticleDOI
Quantitative High Performance Thin Layer Chromatographic Determination of Organic Acid Preservatives in Beverages
TL;DR: A simple quantitative HPTLC method for the determination of sorbic acid, benzoic acid and dehydroacetic acid in beverages without extraction or cleanup is described in this article.