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Hydrazone-based ligands for micro-solid phase extraction-high performance liquid chromatographic determination of biogenic amines in orange juice.

Identifieur interne : 001720 ( Main/Exploration ); précédent : 001719; suivant : 001721

Hydrazone-based ligands for micro-solid phase extraction-high performance liquid chromatographic determination of biogenic amines in orange juice.

Auteurs : Chanbasha Basheer [Arabie saoudite] ; Weishan Wong ; Ahmad Makahleh ; Abdassalam Abdelhafiz Tameem ; Abdussalam Salhin ; Bahruddin Saad ; Hian Kee Lee

Source :

Journal of chromatography. A [ 1873-3778 ] ; 2011.

RBID : pubmed:21621782

English descriptors

KwdEn :
- Beverages (analysis), Biogenic Amines (analysis), Biogenic Amines (isolation & purification), Chromatography, High Pressure Liquid (methods), Citrus sinensis (chemistry), Hydrazones (chemistry), Linear Models, Reproducibility of Results, Sensitivity and Specificity, Solid Phase Extraction (methods).
MESH :
- chemical , analysis : Biogenic Amines.
- analysis : Beverages.
- chemistry : Citrus sinensis, Hydrazones.
- chemical , isolation & purification : Biogenic Amines.
- methods : Chromatography, High Pressure Liquid, Solid Phase Extraction.
- Linear Models, Reproducibility of Results, Sensitivity and Specificity.

Abstract

Eight hydrazone-based ligands were synthesized, trapped in a silica sol-gel matrix, and were subsequently used in the micro-solid phase extraction (μ-SPE) of biogenic amines (BAs). The BAs investigated were tryptamine, phenylethylamine, putrescine, histamine, tyramine and spermidine. Prior to the extraction, dansyl chloride was added to the samples which were heated to 70°C for 10 min. The samples were extracted with μ-SPE, after which analytes were desorbed using acetonitrile via ultrasonication. The extracts were analysed by high performance liquid chromatography (HPLC) with ultraviolet detection. Of the eight ligands investigated as sorbents, benzophenone 2,4-dinitrophenylhydrazone was found to be the most promising. The enhanced π-π interaction between the analytes and the ligand facilitated the adsorption process. Under the most suitable extraction conditions, the method demonstrated good linearity with correlation coefficient of more than 0.985 over a concentration range of 1-50 μg L(-1). Satisfactory repeatability with relative standard deviations of 7.43-11.30% (n=3) were obtained. Detection limits ranged from 3.8 to 31.3 ng L(-1). The μ-SPE method exhibited lower recoveries (71.5-87.4%) when compared to the solid phase extraction technique (79.7-95.0%), but enrichment factors of 94-460 were obtained. The proposed μ-SPE-HPLC method was applied to the determination of BAs in orange juice purchased from local supermarkets, with satisfactory results. The orange juices were characterized by the presence of relatively high levels of putrescine (range, 550-2210 μg L(-1)) but tryptamine and phenylethylamine were not detected in any of the tested samples.

DOI: 10.1016/j.chroma.2011.04.073
PubMed: 21621782

Affiliations:

Arabie saoudite

Le document en format XML

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<term>Citrus sinensis (chemistry)</term>
<term>Hydrazones (chemistry)</term>
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<term>Reproducibility of Results</term>
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<front><div type="abstract" xml:lang="en">Eight hydrazone-based ligands were synthesized, trapped in a silica sol-gel matrix, and were subsequently used in the micro-solid phase extraction (μ-SPE) of biogenic amines (BAs). The BAs investigated were tryptamine, phenylethylamine, putrescine, histamine, tyramine and spermidine. Prior to the extraction, dansyl chloride was added to the samples which were heated to 70°C for 10 min. The samples were extracted with μ-SPE, after which analytes were desorbed using acetonitrile via ultrasonication. The extracts were analysed by high performance liquid chromatography (HPLC) with ultraviolet detection. Of the eight ligands investigated as sorbents, benzophenone 2,4-dinitrophenylhydrazone was found to be the most promising. The enhanced π-π interaction between the analytes and the ligand facilitated the adsorption process. Under the most suitable extraction conditions, the method demonstrated good linearity with correlation coefficient of more than 0.985 over a concentration range of 1-50 μg L(-1). Satisfactory repeatability with relative standard deviations of 7.43-11.30% (n=3) were obtained. Detection limits ranged from 3.8 to 31.3 ng L(-1). The μ-SPE method exhibited lower recoveries (71.5-87.4%) when compared to the solid phase extraction technique (79.7-95.0%), but enrichment factors of 94-460 were obtained. The proposed μ-SPE-HPLC method was applied to the determination of BAs in orange juice purchased from local supermarkets, with satisfactory results. The orange juices were characterized by the presence of relatively high levels of putrescine (range, 550-2210 μg L(-1)) but tryptamine and phenylethylamine were not detected in any of the tested samples.</div>
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Hydrazone-based ligands for micro-solid phase extraction-high performance liquid chromatographic determination of biogenic amines in orange juice.

Hydrazone-based ligands for micro-solid phase extraction-high performance liquid chromatographic determination of biogenic amines in orange juice.

Source :

English descriptors

Abstract

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