Ultrasensitive detection of deltamethrin by immune magnetic nanoparticles separation coupled with surface plasmon resonance sensor

Liu, Xia; Li, Lei; Liu, Youqian; Shi, Xingbo; Li, Wenjin; Yang, Yang; Mao, Lu-Gang

doi:10.1016/j.bios.2014.03.020

Cited by 37 publications

(8 citation statements)

References 36 publications

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“…For example, Mao et al [ 6 ] achieved simultaneous determination of tralomethrin, deltamethrin, and its related compounds by HPLC with radiometric detection. Liu et al [ 7 ] successfully applied immune magnetic nanoparticles separation coupled with surface plasmon resonance sensor to detect deltamethrin. The results revealed that the detection sensitivity for deltamethrin detection line of deltamethrin concentrations could reach from 0.01 mg/L to 1 mg/L.…”

Section: Introductionmentioning

confidence: 99%

Density Functional Theory Analysis of Deltamethrin and Its Determination in Strawberry by Surface Enhanced Raman Spectroscopy

Dong

Lin

et al. 2018

Molecules

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Deltamethrin is widely used in pest prevention and control such as red spiders, aphids, and grubs in strawberry. It is important to accurately monitor whether the deltamethrin residue in strawberry exceeds the standard. In this paper, density functional theory (DFT) was used to theoretically analyze the molecular structure of deltamethrin, gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs) were used to enhance the surface enhanced Raman spectroscopy (SERS) detection signal. As a result, the theoretical Raman peaks of deltamethrin calculated by DFT were basically similar to the measured results, and the enhancing effects based on AuNPs was better than that of AgNPs. Moreover, 554, 736, 776, 964, 1000, 1166, 1206, 1593, 1613, and 1735 cm−1 could be determined as deltamethrin characteristic peaks, among which only three Raman peaks (736, 1000, and 1166 cm−1) could be used as the deltamethrin characteristic peaks in strawberry when the detection limit reached 0.1 mg/L. In addition, the 500–1800 cm−1 SERS of deltamethrin were analyzed by the partial least squares (PLS) and backward interval partial least squares (BIPLS). The prediction accuracy of deltamethrin in strawberry (Rp2 = 0.93, RMSEp = 4.66 mg/L, RPD = 3.59) was the highest when the original spectra were pretreated by multiplicative scatter correction (MSC) and then modeled by BIPLS. In conclusion, the deltamethrin in strawberry could be qualitatively analyzed and quantitatively determined by SERS based on AuNPs enhancement, which provides a new detection scheme for deltamethrin residue determination in strawberry.

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Section: Introductionmentioning

confidence: 99%

Density Functional Theory Analysis of Deltamethrin and Its Determination in Strawberry by Surface Enhanced Raman Spectroscopy

Dong

Lin

et al. 2018

Molecules

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“…Due to the aforementioned desired properties of MNPs, these compounds are widely used for environmental monitoring, biomedical applications, food analysis, etc. [43][44][45][46]. The principle of the SPR system with MNPs was illustrated in Figure 2 [47].…”

Section: Surface Plasmon Resonance (Spr)mentioning

confidence: 99%

Optical-Based (Bio) Sensing Systems Using Magnetic Nanoparticles

2019

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In recent years, various reports related to sensing application research have suggested that combining the synergistic impacts of optical, electrical or magnetic properties in a single technique can lead to a new multitasking platform. Owing to their unique features of the magnetic moment, biocompatibility, ease of surface modification, chemical stability, high surface area, high mass transference, magnetic nanoparticles have found a wide range of applications in various fields, especially in sensing systems. The present review is comprehensive information about magnetic nanoparticles utilized in the optical sensing platform, broadly categorized into four types: surface plasmon resonance (SPR), surface-enhanced Raman spectroscopy (SERS), fluorescence spectroscopy and near-infrared spectroscopy and imaging (NIRS) that are commonly used in various (bio) analytical applications. The review also includes some conclusions on the state of the art in this field and future aspects.

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“…The interaction between three Citrus flavonoids and starch was studied using SPR sensor. The preparation of Au chip can be referred to our previous published paper (Liu et al, 2014). After the stable baseline was obtained, 100 lL of a freshly prepared 10 mM MPA solution (dissolved with ethanol) was injected into SPR flow cell.…”

Section: Interaction Between Three Citrus Flavonoids and Starchmentioning

confidence: 99%

Three Citrus flavonoids retard the digestion of starch and its working mechanisms

Luo

Liu

Yin

et al. 2017

Int J of Food Sci Tech

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Summary In this work, the effects of three Citrus flavonoids (naringin, neohesperidin and hesperidin) on α‐amylase catalysed starch digestion were investigated. An inhibitory kinetics experiment demonstrated that they noncompetitively inhibit the activity of α‐amylase with Ki values of, respectively, 25.21 μm, 40.26 μm, 40.69 μm. Surface plasmon resonance assay showed three Citrus flavonoids can bind with starch with KD values of, respectively, 3.98 ± 0.20 mm, 4.92 ± 0.15 mm and 5.07 ± 0.17 mm. Scanning electron microscopy indicated they can delay the retrogradation of starch. The results of 1, 1‐diphenyl‐2‐picryl hydrazyl radical assay indicate that the antioxidant activities of three Citrus flavonoids are significantly decreased by interacting with starch. These results illustrated three Citrus flavonoids that retard the digestion of starch not only through interaction with α‐amylase, but also through interaction with starch.

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Ultrasensitive detection of deltamethrin by immune magnetic nanoparticles separation coupled with surface plasmon resonance sensor

Cited by 37 publications

References 36 publications

Density Functional Theory Analysis of Deltamethrin and Its Determination in Strawberry by Surface Enhanced Raman Spectroscopy

Density Functional Theory Analysis of Deltamethrin and Its Determination in Strawberry by Surface Enhanced Raman Spectroscopy

Optical-Based (Bio) Sensing Systems Using Magnetic Nanoparticles

Three Citrus flavonoids retard the digestion of starch and its working mechanisms

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