Pressurized liquid extraction of sulfite for quantitation by capillary zone electrophoresis
Sulfite is an additive used in shrimp processing to prevent discoloration. However, sulfite can cause health issues for sensitive consumers, making its monitoring necessary. Determining sulfite concentrations is complex because the Monier-Williams reference method is laborious and has low analytical...
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| Veröffentlicht in: | Electrophoresis 2024-10 |
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| creator | Gonçalves, Samantha Molognoni, Luciano Daguer, Heitor Ribeiro, Ana Paula Fabichak Deolindo, Carolina Turnes Pasini Vitali, Luciano Hoff, Rodrigo |
| description | Sulfite is an additive used in shrimp processing to prevent discoloration. However, sulfite can cause health issues for sensitive consumers, making its monitoring necessary. Determining sulfite concentrations is complex because the Monier-Williams reference method is laborious and has low analytical throughput. Additionally, new techniques are needed to stabilize sulfite during the extraction process because this analyte undergoes rapid oxidation. A new method involving extraction and derivatization of sulfite with formaldehyde through automated pressurized liquid extraction (PLE), followed by quantitation by capillary zone electrophoresis with diode-array detector in indirect mode, was developed and optimized using multivariate planning. The PLE procedure was compared to another solid-liquid extraction method. The new method successfully stabilized and extracted sulfite from shrimp in few steps with adequate precision (CV |
| doi_str_mv | 10.1002/elps.202400115 |
| format | Article |
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| title | Pressurized liquid extraction of sulfite for quantitation by capillary zone electrophoresis |
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