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The food processing stage facilitates the survival of spores from microorganisms such as and species, thereby posing food safety risks. However, current methods for detecting and classifying spore contamination in food are slow, inefficient, and unsuitable for rapid comparison. This method utilizes Raman spectroscopy, combined with a Python-based platform for comparison and analysis. Six common and spores were analyzed, with distinct Raman spectral peaks identified at 838 cm, 895 cm, 1052 cm, 1200 cm, 1400 cm, 1577 cm, 1666 cm, 1722 cm, 2970 cm, and 3000 cm. The platform was validated using bone gelatin products, successfully identifying , , , and spores. This method enables faster and more efficient spore detection and classification, providing valuable technical support for improving food safety and contamination control strategies.
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http://dx.doi.org/10.1016/j.fochx.2025.102844 | DOI Listing |
J Phys Chem B
September 2025
National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 11221, Taiwan, ROC.
The synthesis of -tetrakis(3,4,5-trimethoxyphenyl)porphyrin [HT(3,4,5-OCH)PP] and cobalt(II) -tetrakis(3,4,5-trimethoxyphenyl)porphyrin [Co(T(3,4,5-OCH)PP)] has been successfully accomplished. The oxidation properties of [Co(T(3,4,5-OCH)PP)] have been assessed through UV-vis, NMR, and EPR techniques. It can be seen in the UV-vis spectrum that adding SbCl caused extra peaks to appear at 674 nm, which means that a π-cation radical was formed.
View Article and Find Full Text PDFJ Phys Chem Lett
September 2025
Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331, United States.
Carbon dots (CDs) represent a new class of nontoxic and sustainable nanomaterials with increasing applications. Among them, bright and large Stokes-shift CDs are highly desirable for display and imaging, yet the emission mechanisms remain unclear. We obtained structural signatures for the recently engineered green and red CDs by ground-state femtosecond stimulated Raman spectroscopy (FSRS), then synthesized orange CDs with similar size but much higher nitrogen dopants than red CDs.
View Article and Find Full Text PDFInorg Chem
September 2025
Synthesis and Characterization of Innovative Materials, TUM School of Natural Sciences, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching b. München 85748, Germany.
Semiconductors with one-dimensional (1D) substructures are promising for next-generation optical and electronic devices due to their directional transport and flexibility. Representatives of this class include HgPbP-type materials. This study investigates the related semiconductors AgGeP and AgSnP.
View Article and Find Full Text PDFSmall
September 2025
Nanochemistry Department, Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569, Stuttgart, Germany.
Flexible metal-organic frameworks (MOFs) have emerged as a new generation of porous materials and are considered for various applications such as sensing, water or gas capture, and water purification. MIL-88 A (Fe) is one of the earliest and most researched flexible MOFs, but to date, there is a lack in the structural aspects that govern its dynamic behaviour. Here, we report the first crystal structure of DMF-solvated MIL-88 A and investigate the impact of real structure effects on the dynamic behaviour of MIL-88 A (Fe), particularly upon water adsorption.
View Article and Find Full Text PDFSmall
September 2025
School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou, 310027, P. R. China.
High-concentration electrolytes (HCEs) face inherent challenges such as high viscosity and diminished ionic conductivity caused by the formation of three-dimensional (3D) anion networks, which limit their practical applications. In this study, it is demonstrated that encapsulating HCEs within metal-organic frameworks (MOFs) effectively disrupts these 3-D networks, resulting in significantly enhanced ionic conductivity. Raman spectroscopy, nuclear magnetic resonance (NMR), and molecular dynamics (MD) simulations reveal a significant reduction in aggregates (AGGs)-state anion within MOF-confined electrolytes, confirming the reconstruction of the solvation environment.
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