Analysis of riboflavin in beer by capillary electrophoresis/blue light emitting diode (LED)-induced fluorescence detection combined with a dynamic pH junction technique

Su, An Kai

doi:10.1016/j.talanta.2004.04.011

Cited by 75 publications

(43 citation statements)

References 23 publications

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“…One of the main applications of CE for vitamins [23,[104][105][106][107] has been the determination of flavins [104,105], due to their native fluorescence and good solubility in water. Thus, an inexpensive method for the routine analysis of riboflavin in beer by MEKC using blue light emitting diode induced fluorescence detection was described by Su et al [104].…”

Section: Vitaminsmentioning

confidence: 99%

“…Thus, an inexpensive method for the routine analysis of riboflavin in beer by MEKC using blue light emitting diode induced fluorescence detection was described by Su et al [104]. The detection limit was down to 1 ng/ml, allowing the determination of riboflavin in 12 different types of commercial beer at concentrations ranging from 130 to 280 ng/mL.…”

Section: Vitaminsmentioning

confidence: 99%

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Recent advances in the application of capillary electromigration methods for food analysis

García‐Cañas

Cifuentes

2007

Electrophoresis

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Section: Vitaminsmentioning

confidence: 99%

Section: Vitaminsmentioning

confidence: 99%

Recent advances in the application of capillary electromigration methods for food analysis

García‐Cañas

Cifuentes

2007

Electrophoresis

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“…As previously reported [11,12], RF in aqueous medium presents two excitation maxima at 8 approximately 368 and 440 nm, and a fluorescence emission maximum at 524 nm. The pH changes in the range 4-8 did not produce any significant modifications in the fluorescence signal [33]. Because the pH of the analyzed urine samples were between 5 and 7, it was not adjusted.…”

Section: Preliminary Studiesmentioning

confidence: 99%

Development of a second-order standard addition fluorescence method for the direct determination of riboflavin in human urine samples without previous clean up and separation steps

Privitera

Lozano

2017

Microchemical Journal

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A new strategy for the determination of riboflavin (RF, or vitamin B2) in human urine samples has been developed, combining excitation-emission fluorescence matrix (EEFM) data in standard addition mode and second-order chemometric analysis. The method is simple, fast and eco-friendly because it complies with the green analytical chemistry principles, avoiding the need of previous clean up and separation steps that consume high amounts of organic solvents. Successful results were obtained by different chemometric algorithms, namely parallel factor analysis (PARAFAC), unfolded partial leastsquares/residual bilinearization (U-PLS/RBL) and multidimensional partial leastsquares/residual bilinearization (N-PLS/RBL), all in the modified standard addition. These algorithms allowed us to achieve selectivity in a system, which requires standard addition and shows a significant background spectral overlapping with the studied vitamin. The quality of the proposed strategy was evidenced on the basis of the analytical recoveries from urine samples spiked with RF. The detection limits achieved in urine samples are encouraging compared to those obtained using chromatographic approaches. The relative prediction errors were lower than 5.6 %.

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“…The standard method for riboflavin determination in food is the fluorimetric method, defined by Association of Official Analytical Chemists. 6 The other used techniques are spectrophotometry, 7-9 chemiluminescence, 10 capillary electrophoresis, [11][12][13] and the most frequently used HPLC. [14][15][16][17] These methods have demonstrated good sensitivity and selectivity, but their implementation requires specialised expensive equipment and the procedures may be rather complicated and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Simple, Rapid and Selective Chronopotentiometric Method for the Determination of Riboflavin in Pharmaceutical Preparations Using a Glassy Carbon Electrode

Brezo

Stojanović

Suturović

et al. 2015

ACSi

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A novel, simple, sensitive and reliable electrochemical method for the riboflavin determination using chronopotentiometry with glassy carbon electrode was developed. The most important instrumental parameters of chronopotentiometry including type and concentration of supporting electrolyte, initial potential and current range were examined and optimised in respect to riboflavin analytical signal. Riboflavin provided well defined reduction signal at -0.12 V vs. Ag/AgCl (3.5 mol/L KCl) electrode in 0.025 mol/L HCl. Under optimal conditions, linear response of riboflavin was observed in the concentration range of 0.2-70 mg/L with achieved limit of detection of 0.076 mg/L and limit of quantitation of 0.23 mg/L of riboflavin. Common vitamins and excipients did not interfere with the determination. The proposed method was successfully applied for determination of riboflavin in commercially available pharmaceutical preparations. The obtained results were in statistical agreement to the contents declared by manufacturer and to those obtained by HPLC used as a comparative method.

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Analysis of riboflavin in beer by capillary electrophoresis/blue light emitting diode (LED)-induced fluorescence detection combined with a dynamic pH junction technique

Cited by 75 publications

References 23 publications

Recent advances in the application of capillary electromigration methods for food analysis

Recent advances in the application of capillary electromigration methods for food analysis

Development of a second-order standard addition fluorescence method for the direct determination of riboflavin in human urine samples without previous clean up and separation steps

Simple, Rapid and Selective Chronopotentiometric Method for the Determination of Riboflavin in Pharmaceutical Preparations Using a Glassy Carbon Electrode

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