Development of a quantum dot<scp>s</scp>‐based strip immunoassay for the detection of pyrimethanil in fruit and vegetable samples

Zhang, Xiaoyu; Zou, Xiaonan; Wang, Zhiyu; Wang, Ying; Zhang, Yi; Liu, Zejing; Zhang, Tiantian; Wang, Yihui; Zhang, Guifang; Yang, Tian

doi:10.1111/jfs.12890

Cited by 3 publications

(3 citation statements)

References 28 publications

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“…Especially during storage, the rotting is more serious after being infested by Alternaria . Large amounts of Alternaria toxins were produced and accumulate in the decay site and surrounding healthy tissues 4 . There are many kinds of secondary metabolites produced by Alternaria .…”

Section: Introductionmentioning

confidence: 99%

“…Large amounts of Alternaria toxins were produced and accumulate in the decay site and surrounding healthy tissues. 4 There are many kinds of secondary metabolites produced by Alternaria. According to toxicity, tenuazonic acid (TeA), alternariol (AOH), alternariol monomethyl ether (AME), altenuene (ALT) and tentoxin (TEN) are widely studied.…”

Section: Introductionmentioning

confidence: 99%

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Saturated brine dissolution and liquid–liquid extraction combined with UPLC–MS/MS for the detection of typical Alternaria toxins in pear paste

Jiang

Zang

et al. 2023

J Sci Food Agric

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BACKGROUNDAlternaria can infest pears to produce metabolites, which can contaminate pears and their processed products. Pear paste, one of the most important pear‐based products, is popular among Chinese consumers especially for its cough relieving and phlegm removal properties. Although people are concerned about the risk of Alternaria toxins in many agro‐foods and their products, little is known about the toxins in pear paste.RESULTSA method was developed for the determination of tenuazonic acid, alternariol, alternariol menomethyl ether, altenuene and tentoxin in pear paste by ultra‐performance liquid chromatography tandem mass spectrometry with saturated sodium sulphate dissolution and acidified acetonitrile extraction. The mean recoveries of the five toxins were 75.3–113.8% with relative standard deviations of 2.8–12.2% at spiked levels of 1.0–100 μg kg−1. Alternaria toxins were detected in 53 out of 76 samples, with a detection rate of 71.4%. Tenuazonic acid (67.1%), alternariol (35.5%), tentoxin (23.7%) and alternariol monomethyl ether (7.9%) were detected in all samples at concentrations of < limit of quantification (LOQ)–105.0 μg kg−1, < LOQ–32.1 μg kg−1, < LOQ–74.2 μg kg−1 and < LOQ–15.1 μg kg−1, respectively. Altenuene was never found in pear paste samples. Tenuazonic acid, alternariol, tentoxin and alternariol menomethyl ether should be focused on due to their toxicity and detection rates.CONCLUSIONTo the best of our knowledge, this is the first report on the detection method and residue levels of Alternaria toxins in pear paste. The proposed method and research data can provide technical support for the Chinese government to continuously monitor and control Alternaria toxins in pear paste, especially tenuazonic acid. It can also provide a useful reference for related researchers. © 2023 Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Saturated brine dissolution and liquid–liquid extraction combined with UPLC–MS/MS for the detection of typical Alternaria toxins in pear paste

Jiang

Zang

et al. 2023

J Sci Food Agric

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“…We can separate the Coulomb interaction into inter-site and on-site term. Since the charge density is quite low in moiré super cell for electrons from flat bands, we can neglect on-site Hubbard interaction, which is at least an order of magnitude smaller than the inter-site ones after projecting on the low-energy states on the moiré length scale 79 . We take Fourier transformation to the real space electron field operator:…”

Section: The Coulomb Interaction In the Twisted Graphenementioning

confidence: 99%

Alternating twisted mutilayer graphene: generic partition rules, double flat bands, and orbital magnetoelectric effect

Xie,

Zhang,

Liu

2021

Preprint

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Twisted graphene systems have draw significant attention due to the discoveries of various correlated and topological phases. In particular, recently the alternating twisted trilayer graphene is discovered to exhibit unconventional superconductivity, which motivates us to study the electronic structures and possible interesting correlation effects of this class of alternating twisted graphene systems. In this work we consider generic alternating twisted multilayer graphene (ATMG) systems with M -L-N stacking configurations, in which the M (L) graphene layers and the L (N ) layers are twisted by an angle θ (-θ). Based on analysis from a simplified k•p model approach, we analytically derive generic partition rules for the low-energy electronic structures, which exhibit various intriguing band dispersions including one pair of flat bands, two pairs of flat bands, as well as flat bands co-existing with with Dirac cones, quadratic bands, or more generally E(k) ∼ k J dispersions (J is positive integer) for each spin and valley. Such unusual non-interacting electronic structures may have unconventional correlation effects. Especially for a mirror symmetric ATMG system with two pairs of flat bands (per spin per valley), we find that Coulomb interactions may drive the system into a state breaking both time-reversal and mirror symmetries, which can exhibit a novel type of orbital magnetoelectric effect due to the interwining of electric polarization and orbital magnetization orders in the symmetry-breaking state.

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Recent Advances in Rapid Detection Techniques for Pesticide Residue: A Review

El‐Aty

Eun

et al. 2022

J. Agric. Food Chem.

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As an important chemical pollutant affecting the safety of agricultural products, the on-site and efficient detection of pesticide residues has become a global trend and hotspot in research. These methodologies were developed for simplicity, high sensitivity, and multiresidue detection. This review introduces the currently available technologies based on electrochemistry, optical analysis, biotechnology, and some innovative and novel technologies for the rapid detection of pesticide residues, focusing on the characteristics, research status, and application of the most innovative and novel technologies in the past 10 years, and analyzes challenges and future development prospects. The current review could be a good reference for researchers to choose the appropriate research direction in pesticide residue detection.

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Development of a quantum dots‐based strip immunoassay for the detection of pyrimethanil in fruit and vegetable samples

Cited by 3 publications

References 28 publications

Saturated brine dissolution and liquid–liquid extraction combined with UPLC–MS/MS for the detection of typical Alternaria toxins in pear paste

Saturated brine dissolution and liquid–liquid extraction combined with UPLC–MS/MS for the detection of typical Alternaria toxins in pear paste

Alternating twisted mutilayer graphene: generic partition rules, double flat bands, and orbital magnetoelectric effect

Recent Advances in Rapid Detection Techniques for Pesticide Residue: A Review

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