Beitrag zum nachweis und zur bestimmung von oxymethylfurfurol in honig und kunsthonig

Winkler, Otto

doi:10.1007/bf01683776

Cited by 92 publications

(56 citation statements)

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“…The proposed structure of the colored product (Fig. 2) is analogous to that proposed by Winkler,22 but with substitution of aniline by p-aminobenzoic acid. The suggested product would therefore have a molecular mass of approximately 373 g mol -1 .…”

Section: Determination Of Product Structuresupporting

confidence: 60%

“…Based on the work of Winkler 22 and Foley, Stanford and McKennis, 23 the reaction of HMF with barbituric acid and p-aminobenzoic acid probably leads to the product shown in Fig. 2.…”

Section: Resultsmentioning

confidence: 98%

“…Another important advantage is the use of an FIA system, where the analyst has less contact with reagents and waste, less waste is generated, and analytical errors are reduced because the system is semi-automated. The analysis is faster, compared to the Winkler 22 and official AOAC methods, 21 which operate in batch mode. In its application to real samples, the results obtained with the proposed method showed no statistically significant differences, compared to those obtained using the methods described in the literature.…”

Section: Discussionmentioning

confidence: 98%

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Flow Injection Analysis of 5-(Hydroxymethyl)-2-furaldehyde in Honey by a Modified Winkler Method

et al. 2016

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One of the quality indicators for honey is 5-(hydroxymethyl)-2-furaldehyde (HMF), which is formed during the heating or aging of honey. The International Honey Commission recommends three methods for the determination of HMF in honey: the Winkler method, the White method, and determination by HPLC. The Winkler method uses the carcinogenic substance p-toluidine, which is not in accordance with the principles of Green Chemistry. The present work describes the determination of HMF in honey by flow injection analysis (FIA) using a modified Winkler method, replacing p-toluidine with p-aminobenzoic acid. The linear range was 1.00 to 40.0 mg L -1 , the limit of detection (LOD) was 0.43 mg L -1, and the limit of quantification (LOQ) was 1.32 mg L -1 . The method is an efficient and environmentally friendly technique for the analysis of HMF in honey.

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Section: Determination Of Product Structuresupporting

confidence: 60%

“…Based on the work of Winkler 22 and Foley, Stanford and McKennis, 23 the reaction of HMF with barbituric acid and p-aminobenzoic acid probably leads to the product shown in Fig. 2.…”

Section: Resultsmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 98%

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Flow Injection Analysis of 5-(Hydroxymethyl)-2-furaldehyde in Honey by a Modified Winkler Method

et al. 2016

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“…Recoveries for both analytes ranged from 95 to 99%, that is, no significant loss was observed during the clarification step by employing the Carrez solution. Virtually quantitative recoveries of HMF from honey have been already reported by several authors employing various methods of preliminary sample preparation [4,[6][7][8][9][10]12,20].…”

Section: Specificity Recovery and Reproducibilitymentioning

confidence: 99%

“…Afterwards, spectrophotometric procedures were also developed [20]. However, both the colorimetric and spectrophotometric methods (i) are time consuming, (ii) make use of toxic or anyhow hazardous chemicals, (iii) require a strict control of both reaction time and temperature, since the instability of the reaction product may lead to low recoveries and wide statistical variations of the results and (iv) none of the methods is specific [3][4][5][7][8][9][10]12,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

High-performance liquid chromatographic determination of 2-furaldehyde and 5-hydroxymethyl-2-furaldehyde in honey

Coco

Valentini²,

Novelli

et al. 1996

Journal of Chromatography A

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High performance liquid chromatographic determination of 2-furaldehyde and 5-hydroxymethyl-2-furaldehyde in honey / LO COCO F.; VALENTINI C.; NOVELLI V.; CECCON L. -In: JOURNAL OF CHROMATOGRAPHY A. -ISSN 0021-9673. -749(1996), pp. 95-102. OriginalHigh performance liquid chromatographic determination of 2-furaldehyde and 5-hydroxymethyl-2-furaldehyde in honey AbstractA method of determination of 2-furaldehyde (F) and 5-hydroxymethyl-2-furaldehyde (HMF) in honey by highperformance liquid chromatography (HPLC) is described. The method is based on the formation of the 2,4-dinitrophenylhydrazones of carbonyl compounds and subsequent reversed-phase separation of these derivatives. Derivatization is carried out by utilizing an acidic solution of 2,4-dinitrophenylhydrazine in acetonitrile. Precipitation of the derivatives of carbonyl compounds is thus avoided and direct injection of the sample into the HPLC system is allowed. The procedure offers a high specificity, since the derivatives of F and HMF are well separated from the other components of the mixture under examination. Recoveries of 95-99% were obtained from honey spiked at different levels with both analytes. The detection limit is of the order of 10/zg/kg of honey and reproducibility (mean of six determinations) is -+3% for F and +_2% tbr HMF.

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Hydroxymethylfurfural (HMF) and Related Compounds

Morales

2008

Process‐Induced Food Toxicants

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Beitrag zum nachweis und zur bestimmung von oxymethylfurfurol in honig und kunsthonig

Cited by 92 publications

References 0 publications

Flow Injection Analysis of 5-(Hydroxymethyl)-2-furaldehyde in Honey by a Modified Winkler Method

Flow Injection Analysis of 5-(Hydroxymethyl)-2-furaldehyde in Honey by a Modified Winkler Method

High-performance liquid chromatographic determination of 2-furaldehyde and 5-hydroxymethyl-2-furaldehyde in honey

Hydroxymethylfurfural (HMF) and Related Compounds

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