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Pectin/gelatin-based bionanocomposite containing modified graphene quantum dots and carnauba wax as functional fillers for food packaging applications.
J Food Sci
January 2025
Nutrition Research Center, Department of Food Science and Technology, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
Alternatives to nonbiodegradable synthetic plastics for food packaging include films made from biopolymers that are nontoxic and environment-friendly. In this study, carnauba wax (CW) and nitrogen-doped graphene quantum dots (NG) as functional additives were utilized in the production of pectin/gelatin (PG) film. NG was synthesized through the microwave method, using acetic acid as the carbon source, giving size, and zeta potential of 1.
View Article and Find Full Text PDFDry ice sublimation: A computational study with experimental validation for the effects of geometry.
J Food Sci
January 2025
Department of Agricultural and Biological Engineering, University of Florida, Gainesville, Florida, USA.
Dry ice is one of the world's most in-demand commodities for cold-chain distribution of temperature-sensitive products. It offers an effective cooling solution without requiring mechanical refrigeration or specialized equipment. Dry ice is commonly produced as pellets and blocks.
View Article and Find Full Text PDFCellulases Production by Aspergillus unguis in Solid State Fermentation and Enzymatic Hydrolysis of Dilute Acid-Treated Groundnut Fodder.
Curr Microbiol
January 2025
Department of Botany, Mahatma Gandhi Central University, Motihari, Bihar, 845401, India.
Groundnut fodder was utilized as a bioresource for the production of cellulases through solid state fermentation (SSF). Aspergillus unguis was initially grown on modified groundnut fodder for cellulase production and the fodder was hydrolyzed by the crude cellulase extract into fermentable hydrolyzate. The highest titer of Filter paperase (FPase), Carboxymethyl cellulase (CMCase), β-glucosidase, and protein content were found to be 11.
View Article and Find Full Text PDFAn ultrasensitive colorimetric/fluorescent/photothermal sensing platform for the detection of D-amino acids based on carbon dots nanozymes with enhanced peroxidase-like activity.
Mikrochim Acta
January 2025
Department of Chemistry, School of Science, Xihua University, Chengdu, 610039, PR China.
Based on the enhanced peroxidase-like activity of carbon dots nanozymes (CDszymes), with a specific oxidation reaction of D-amino acid oxidase catalysing the formation of HO from D-amino acid, an ultrasensitive sensing platform, was constructed for the quantitative detection of D-amino acids in saliva. With the increase of D-amino acids concentration, the blue color of catalytic product gradually deepend, the fluorescence CDszymes gradually quenched, and the temperature gradually increased. Using D-alanine as D-amino acid models, the detection limits of D-alanine in colorimetric/photothermal/fluorescent mode were 0.
View Article and Find Full Text PDFDesigning Fluorescent Interfaces at Hotspots in a Plasmonic Nanopore for Homologous Optoelectronic Sensing.
Small
January 2025
Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China.
In this work, a site-selective functionalization strategy is proposed for modifying fluorescent dyes in the plasmonic nanopore, which highlights building optoelectronic dual-signal sensing interfaces at "hotspots" locations to construct multiparameter detection nanosensor. Finite-difference time-domain (FDTD) simulations confirmed the high-intensity electromagnetic field due to plasmonic nanostructure. It is demonstrated that adjusting the distance between the nanopore inner wall and fluorophore prevented the fluorescence quenching, resulting in more than a thirty fold fluorescence enhancement.
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