Polydopamine-coated magnetic Spirulina nanocomposite for efficient magnetic dispersive solid-phase extraction of aflatoxins in pistachio

Karami-Osboo, Rouhollah; Ahmadpoor, Fatemeh; Nasrollahzadeh, Mahmoud; Maham, Mehdi

doi:10.1016/j.foodchem.2021.131967

Cited by 32 publications

(5 citation statements)

References 38 publications

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“…The LOD for AFB 1 , AFB 2 , AFG 1 , and AFG 2 was in a range of 0.15-0.05 µg/kg, with good linearity and precision, compared to routine methods [86]. Karami-Osboo et al synthesized different adsorbent materials used in magnetic (M)DSPE for AFs B1, B2, G1, and G2 extraction at trace levels in nuts (pistachio) prior to determination by HPLC-FLD [87,88]. Taherimaslak et al used a two-step extraction consisting of DLLME and vortex-assisted magnetic nanoparticle (VAMN)DSPE followed by surfactantenhanced spectrofluorimetric detection for the determination of AFs in pistachio nuts, obtaining similar results compared to the AOAC standard method (IAC-HPLC-FLD) [89].…”

Section: Solid Phase Extractionmentioning

confidence: 99%

Current Developments of Analytical Methodologies for Aflatoxins’ Determination in Food during the Last Decade (2013–2022), with a Particular Focus on Nuts and Nut Products

Schincaglia

Aspromonte

Franchina

et al. 2023

Foods

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This review aims to provide a clear overview of the most important analytical development in aflatoxins analysis during the last decade (2013–2022) with a particular focus on nuts and nuts-related products. Aflatoxins (AFs), a group of mycotoxins produced mainly by certain strains of the genus Aspergillus fungi, are known to impose a serious threat to human health. Indeed, AFs are considered carcinogenic to humans, group 1, by the International Agency for Research on Cancer (IARC). Since these toxins can be found in different food commodities, food control organizations worldwide impose maximum levels of AFs for commodities affected by this threat. Thus, they represent a cumbersome issue in terms of quality control, analytical result reliability, and economical losses. It is, therefore, mandatory for food industries to perform analysis on potentially contaminated commodities before the trade. A full perspective of the whole analytical workflow, considering each crucial step during AFs investigation, namely sampling, sample preparation, separation, and detection, will be presented to the reader, focusing on the main challenges related to the topic. A discussion will be primarily held regarding sample preparation methodologies such as partitioning, solid phase extraction (SPE), and immunoaffinity (IA) related methods. This will be followed by an overview of the leading analytical techniques for the detection of aflatoxins, in particular liquid chromatography (LC) coupled to a fluorescence detector (FLD) and/or mass spectrometry (MS). Moreover, the focus on the analytical procedure will not be specific only to traditional methodologies, such as LC, but also to new direct approaches based on imaging and the ability to detect AFs, reducing the need for sample preparation and separative techniques.

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Section: Solid Phase Extractionmentioning

confidence: 99%

Current Developments of Analytical Methodologies for Aflatoxins’ Determination in Food during the Last Decade (2013–2022), with a Particular Focus on Nuts and Nut Products

Schincaglia

Aspromonte

Franchina

et al. 2023

Foods

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“…This extraction method will be further discussed later in the paper. A new nanocomposite-based sorbent for magnetic dispersive solid-phase extraction (MDSPE) was created by Karami-Osboo et al [70] using magnetic nanoparticles from Spirulina algae with polydopamine surface modification. The adsorbent was characterized using Fourier transform infrared (FT-IR), X-ray Diffraction (XRD), and field emission scanning electron microscope (FE-SEM) methods and then applied with HPLC-FLD to analyze four aflatoxins in pistachio samples, achieving acceptable recoveries (72-95%).…”

Section: Nanoparticles-based Spementioning

confidence: 99%

Quantification, Prevalence, and Pretreatment Methods of Mycotoxins in Groundnuts and Tree Nuts: An Update

Hellany,

Assaf,

El-Badan

et al. 2023

Processes

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Mycotoxins are toxic compounds produced as secondary metabolites by certain types of filamentous fungi under specific conditions. The contamination of nuts and nut-related products with mycotoxins is a significant global concern due to their severe consequences on human health, including carcinogenicity and immunosuppression. Aflatoxins, with a particular emphasis on aflatoxin B1, are the most common and toxic mycotoxins found in human food. Aflatoxin B1 (AFB1) is known to be highly toxic and carcinogenic. Consequently, global food regulatory organizations have established permissible levels for mycotoxins in nuts. Numerous methodologies have been developed for the detection of mycotoxins in nuts. However, high-performance liquid chromatography (HPLC) and ultra-high-performance liquid chromatography coupled with triple quadrupole mass spectrometry (UHPLC-QqQ-MS/MS) have shown clear benefits in terms of effectiveness and sensitivity. This review aims to provide a comprehensive overview of the major mycotoxins found in nuts, their physiological effects, and their worldwide prevalence. Additionally, the review will focus on nut sample pretreatment methods, analytical techniques employed for mycotoxin detection in nuts, and recent advancements in materials and solvents used for this purpose. Significant gaps exist in mycotoxin detection in nuts, including methodological variability and insufficient data from certain nut-producing countries that need further exploration in the future.

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“…The composition of Spirulina is nutrient-rich, encompassing proteins, lipids, carbohydrates, fiber, a range of minerals, vitamins, γ-linolenic acid, carotenoids, chlorophyll, and phycocyanin 4 , 5 . Thus, functional groups in the Spirulina exhibit chemical reactivity, offering opportunities for introducing additional groups at these sites to undergo structural modifications 6 , 7 . This, in turn, serves to enhance the catalytic performance of Spirulina.…”

Section: Introductionmentioning

confidence: 99%

Sulfonated magnetic spirulina nanobiomaterial as a novel and environmentally friendly catalyst for the synthesis of dihydroquinazolin-4(1H)-ones in aqueous medium

Mashhadi,

Safaei-Ghomi

2024

Sci Rep

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Spirulina algae is an excellent candidate for catalyst preparation due to its reactive functional groups, cost-effectiveness, widespread commercial accessibility, and biodegradability. In this study, magnetized Spirulina was used for the synthesis of dihydroquinazolin-4(1H)-ones (DHQZs) as catalyst. Magnetized Spirulina was produced by CoFe2O4 and sulfonation method using chlorosulfonic acid to create the catalyst [CoFe2O4-Sp-SO3H]. It was affirmed by various techniques, including Fourier transform infrared (FT-IR), Vibrating sample magnetometry (VSM), Powder X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDS), Thermogravimetric analysis (TGA), Transmission electron microscopy (TEM), Field emission scanning electron microscopy (FE-SEM), and elemental mapping techniques. DHQZs synthesis was accomplished through a concise one-pot, three-component reaction involving a range of diverse aldehydes, isatoic anhydride, and primary aromatic amine, within an aqueous medium. The method offers several advantages, including using green conditions, the generation of several new 2-furan-quinazolinone derivatives, chromatography-free purification, short reaction times, appropriate yield of product (75–96%), and catalyst recyclability. The proposed catalyst and water as solvent demonstrated a strong synergistic effect, leading to the prosperous synthesis of various novel dihydroquinazolinones at 60 °C. These numerous benefits make our approach highly attractive for academic research and industrial applications.

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Polydopamine-coated magnetic Spirulina nanocomposite for efficient magnetic dispersive solid-phase extraction of aflatoxins in pistachio

Cited by 32 publications

References 38 publications

Current Developments of Analytical Methodologies for Aflatoxins’ Determination in Food during the Last Decade (2013–2022), with a Particular Focus on Nuts and Nut Products

Current Developments of Analytical Methodologies for Aflatoxins’ Determination in Food during the Last Decade (2013–2022), with a Particular Focus on Nuts and Nut Products

Quantification, Prevalence, and Pretreatment Methods of Mycotoxins in Groundnuts and Tree Nuts: An Update

Sulfonated magnetic spirulina nanobiomaterial as a novel and environmentally friendly catalyst for the synthesis of dihydroquinazolin-4(1H)-ones in aqueous medium

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