Novel Cu2+-based immobilized metal affinity magnetic nanoparticles for fast magnetic solid-phase extraction of trace Sudan dyes in food samples

Zhou, Wei; Wang, Xin; Li, Youping; Zhang, Weikang; Di, Xin

doi:10.1016/j.foodchem.2022.134432

Cited by 12 publications

(1 citation statement)

References 28 publications

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“…Recognizing their potential genotoxicity and carcinogenicity, the International Agency for Research on Cancer (IARC) classifies Sudan dyes as class 3 carcinogens [5]. Many countries have imposed strict bans on the utilization of Sudan dyes in food processing [6]. Despite these prohibitions, the illicit addition of Sudan dyes persists due to their low cost and vibrant colors, particularly in products such as chili and ketchup [7, 8].…”

Section: Introductionmentioning

confidence: 99%

Covalent organic framework/layered double hydroxide composite–coated poly(ether ether ketone) jacket for stir bar sorptive extraction of Sudan dyes

He,

Ma,

Huang

et al. 2024

J of Separation Science

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A novel coating for stir bar sorptive extraction was developed by growing a covalent organic framework, TpPa‐1 (derived from phenylenediamine and 1,3,5‐trimethylphloroglucinol), onto the surface of Ni‐Al layered double hydroxide. Using a poly(ether ether ketone) tube as the supporting substrate, a TpPa‐1/layered double hydroxide–coated stir bar was fabricated and demonstrated excellent extraction performance for Sudan dyes. Notably, its extraction efficiency significantly exceeded that of stir bars modified with only TpPa‐1 or Ni‐Al layered double hydroxide. Based on this innovative coating, a stir bar sorptive extraction‐high performance liquid chromatography method was established. This method exhibited low limits of detection (0.04–0.08 ng/mL) for the analysis of Sudan dyes. It also featured a wide linear range (0.25–100 or 200 ng/mL) and demonstrated good repeatability with relative standard deviations ≤6.22%. The recoveries obtained for spiked lake water and chili powder samples were 93.5%–105.2% and 87.8%–100.6%, respectively, demonstrating the practical potential of the developed method for detecting trace Sudan dyes in real samples.

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Section: Introductionmentioning

confidence: 99%