Nondestructive Detection of Melamine in Milk Powder by Terahertz Spectroscopy and Correlation Analysis Algorithm

Sun, Xudong; Zhu, Ke; Hu, Jun; Jiang, Xiaogang; Liu, Y.

doi:10.1007/s10812-019-00875-5

Cited by 11 publications

(6 citation statements)

References 16 publications

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“…Combined with the analysis algorithm, the maximum absorption peak reached 2.04 THz, while the absorption coefficient increased at a higher melamine concentration. The mixed logistic regression (MLR) model based on THz displays significant potential or quantitatively analyzing melamine in milk powder ( Sun et al, 2019 ). Furthermore, THz technology has also been applied for quality fraud identification in plant-derived foods.…”

Section: Principle and Research Progress In Rapid Analysis Technologymentioning

confidence: 99%

Rapid analysis technologies with chemometrics for food authenticity field: A review

Zhang,

Li,

Zhao

et al. 2024

Current Research in Food Science

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Section: Principle and Research Progress In Rapid Analysis Technologymentioning

confidence: 99%

Rapid analysis technologies with chemometrics for food authenticity field: A review

Zhang,

Li,

Zhao

et al. 2024

Current Research in Food Science

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“…When melamine was added to the milk powder, the concentration of protein was indirectly enhanced. However, melamine is a raw chemical materials and an illegal additive in food [2] . In 2008, the babies drinking the Sanlu milk powder were found to have stones in their kidney, which caused a serious effects to children's health [1] .…”

Section: Introductionmentioning

confidence: 99%

“…However, melamine is a raw chemical materials and an illegal additive in food. [2] In 2008, the babies drinking the Sanlu milk powder were found to have stones in their kidney, which caused a serious effects to children's health. [1] After that, a limit standard for melamine residue in milk powder has been set.…”

Section: Introductionmentioning

confidence: 99%

A Higher Affinity Melamine Binding Aptamer Mutant for More Sensitive Detection

Liu

Hou

et al. 2022

ChemistrySelect

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Melamine is an illegal additive in milk products. Mel‐34 is an aptamer specific for melamine. In this paper, we studied the base‐pair function in the stem regions of Mel‐34 using label‐free thiazole orange (TO) staining assay. Then, we used isothermal titration calorimetry (ITC) to verify the binding activity, and the fluorescence resonance energy transfer (FRET) biosensor based molecule‐beacon was established to detect melamine in yogurt sample. We found one of the mutants (mut6) has four folds higher affinity than Mel‐34, which indicated its critical binding domain was G18‐C25 base pair. We detected melamine in 1 % yogurt sample using mut6 as recognition molecule, the linear range was below 20 μM and the limit of detection was 4.09 μM which is below the melamine threshold (1.0 mg/kg) in milk products. This work calls for carefully study the critical binding domain to discover higher affinity aptamer specific for small molecule using label‐free method.

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“…Such materials are to some extent transparent at these frequencies, allowing us to derive information from the transmission spectra 18 . Time‐domain spectroscopy (TDS) breaks through the inefficiency of conventional spectroscopic detection techniques and can clearly distinguish the spectral characteristics of THz fingerprints of different materials 19,20 . First, THz‐TDS provides a wide range of coherent spectral detection in the terahertz band.…”

Section: Introductionmentioning

confidence: 99%

“…18 Timedomain spectroscopy (TDS) breaks through the inefficiency of conventional spectroscopic detection techniques and can clearly distinguish the spectral characteristics of THz fingerprints of different materials. 19,20 First, THz-TDS provides a wide range of coherent spectral detection in the terahertz band. Second, due to the high temporal resolution of the pulses, THz-TDS is suitable for dynamic spectroscopic measurements.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive identification of wood species by terahertz spectrum

Zhang

Xie

Zhang³

et al. 2022

Micro & Optical Tech Letters

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Terahertz time-domain spectroscopy (THz-TDS) has become an emerging nondestructive detection technique due to the unique properties of THz waves; it offers safety, penetrability, and fingerprint identification, especially for commonly used non-polar materials. Here, we measure the differences in THz spectra of four wood blocks (manglietia, amur linden, black walnut, and ebony) in the frequency range of 0.1-0.9 THz. In addition, we demonstrate the principal components analysis (PCA) applied in THz absorption spectra; the principal components extracted from original data by PCA can replace the original absorption coefficient data and can clearly distinguish the wood types. Results show that THz-TDS combined with PCA can be used as an effective nondestructive identification method in the field of public security, food detection, and customs antismuggling initiatives.

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Nondestructive Detection of Melamine in Milk Powder by Terahertz Spectroscopy and Correlation Analysis Algorithm

Cited by 11 publications

References 16 publications

Rapid analysis technologies with chemometrics for food authenticity field: A review

Rapid analysis technologies with chemometrics for food authenticity field: A review

A Higher Affinity Melamine Binding Aptamer Mutant for More Sensitive Detection

Nondestructive identification of wood species by terahertz spectrum

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