Facile dispersive solid-phase extraction based on humic acid for the determination of aflatoxins in various edible oils

Abstract

Aflatoxins (AFs), as the secondary metabolites produced by some toxigenic fungi of Aspergillus species, are well known to be extremely harmful to humans and animals because of their high toxicity, mutagenicity, carcinogenicity, and teratogenicity.

Simple and sensitive determination of sulfites in Chinese herbal teas by ultrahigh-performance liquid chromatography tandem mass spectrometry

“…The dSPE technique based on efficient adsorbents to remove interfering substances from the matrices, rather than the analytes, is an attractive way for sample preparation. 33 Here, the synthesized CS/prGO/DM composites were utilized as efficient dSPE adsorbents to remove interferents from chrysanthemum samples. The dose of the adsorbent had a significant effect on the recovery of the analyte and the removal capacity of interferents.…”

Design of a novel green bio-based organic–inorganic hybrid material for cost-effective and sustainable monitoring of antibiotic residues

“…Liu et al tried to obtain insoluble HA (IHA) by Soxhlet extraction which can be used as an adsorbent in the pretreatment field. 51 However, the whole process step takes nearly a week, and the insoluble fraction after treatment, mainly composed of Hya and Hm, has a strong non-polar and conjugated structure, lacking polar functional groups, and is only suitable for enrichment of non-polar compounds. Moreover, due to the strong interaction between IHA and non-polar targets, it is usually difficult to achieve a satisfactory desorption effect.…”

Extraction optimization and quality evaluation of humic acids from lignite using the cell-free filtrate of Penicillium ortum MJ51

“…28,29 To investigate the chemical and structural properties of HAs, numerous analytical methods have been widely used, including elemental analysis, titration analysis of acidic functional groups, ultraviolet-visible (UV-Vis) spectroscopy, uorescence spectra, Fourier transform infrared (FTIR) spectroscopy, cross polarization magic angle spinning 13 C NMR (CP/MAS 13 C NMR) spectrometry, X-ray diffraction (XRD), gas chromatography-mass spectrometry (GC-MS), high-performance size-exclusion chromatography (HPSEC) and scanning electron microscopy (SEM). [30][31][32][33] Here, Penicillium ortum MJ51 was isolated from lignite, which has strong ability to solubilize lignite. Some strains of Penicillium spp., such as P. simplicissimum, P. citrinum and P. decumbens P6 are reportedly able to solubilize and degrade lignite.…”