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One-pot reaction of 3-vinylchromones, aromatic aldehydes, and ammonium acetate: an efficient approach to highly functionalized 1,6-dihydropyridine derivatives.
RSC Adv
January 2025
Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
In this work, we present an efficient strategy for the straightforward synthesis of functionalized 1,6-dihydropyridine derivatives a three-component reaction of 3-vinylchromones, aromatic aldehydes, and ammonium acetate. A tandem procedure including NH aldimine formation/Michael-type addition/opening of the pyrone ring/isomerization/6π-electrocyclization/[1,5]-H shift allows rapid access to a series of dihydropyridines bearing an -hydroxybenzoyl and a benzoyl scaffold in good yields. Readily available precursors, simple heating conditions, and operational simplicity are some highlighted advantages of this transformation.
View Article and Find Full Text PDFEnrichment of GABA content in brown rice through heating and humidifying treatment: Quantification via TLC-ImageJ method.
Food Chem
January 2025
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China. Electronic address:
Gamma-aminobutyric acid (GABA) is a functional food ingredient for human health. This study aimed to investigate the enrichment and migration rule of GABA in rice by heating and humidifying treatment (HHT). The thin layer chromatography-ImageJ method (TLC-ImageJ) was developed for determining GABA.
View Article and Find Full Text PDFInfluence of heat treatment method on selected physicochemical and biological properties of fluoride-substituted calcium apatite.
Acta Bioeng Biomech
September 2024
Department of Biochemistry and Biotechnology, Medical University of Lublin, Lublin, Poland.
: The synthesis of fluoridated apatite consists of several stages, among which the heat treatment has a significant impact on the physical and chemical properties. The present study aims to elucidate the influence of two different sintering methods on fluoride-substituted apatite properties. : For this purpose, a two F-substituted apatites were produced by heat treatment in different ways called "rapid sintering" and "slow sintering".
View Article and Find Full Text PDFDeveloping affordable and efficient heating devices for enhanced live cell imaging in confocal microscopy.
Front Plant Sci
January 2025
Department of Biology, University of Mississippi, University, MS, United States.
Temperature control is crucial for live cell imaging, particularly in studies involving plant responses to high ambient temperatures and thermal stress. This study presents the design, development, and testing of two cost-effective heating devices tailored for confocal microscopy applications: an aluminum heat plate and a wireless mini-heater. The aluminum heat plate, engineered to integrate seamlessly with the standard 160 mm × 110 mm microscope stage, supports temperatures up to 36°C, suitable for studies in the range of non-stressful warm temperatures (e.
View Article and Find Full Text PDFResearch progress in the application of infrared blanching in fruit and vegetable drying process.
Compr Rev Food Sci Food Saf
January 2025
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China.
Fruits and vegetables offer substantial nutritional and health benefits, but their short shelf life necessitates effective preservation methods. Conventional drying techniques, while efficient, often lead to deterioration in food quality. Recent advancements highlight the potential of infrared blanching (IRB) as a preparatory process to improve drying outcomes.
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