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Upcycling industrial peach waste to produce dissolving pulp.
Environ Sci Pollut Res Int
January 2025
Laboratory of Design and Development of Innovative Knitted Textiles and Garments, Department of Industrial Design and Production Engineering, University of West Attica, 12244, Egaleo, Attica, Greece.
This study investigates the production of high-purity cellulose pulp from peach (Prunus persica) fruit wastes generated during the processing of a Greek compote and juice production industry. A three-step chemical process is used, including alkaline treatment with NaOH, organic acid (acetic and formic) treatment, and hydrogen peroxide treatment, with the goal of cellulose extraction and purification. A fractional factorial design optimized reagent levels, revealing the strong influence of NaOH concentration on α-cellulose content and degree of polymerization.
View Article and Find Full Text PDFExpanding the chemical coverage of polar compounds in water analysis by coupling supercritical fluid with hydrophilic interaction chromatography high-resolution mass spectrometry.
Anal Chim Acta
March 2025
Van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands. Electronic address:
Background: Persistent and mobile organic compounds (PMOC) are of great concern for water quality and human health. The recent improvement and availability of high-resolution mass spectrometry in combination with liquid chromatography have widely expanded the potential of analytical workflows for their detection and quantitation in water. Given their high polarity, the detection of some PMOC requires alternative techniques to reversed-phase chromatography, such as hydrophilic interaction liquid chromatography (HILIC) and supercritical fluid chromatography (SFC).
View Article and Find Full Text PDFReference materials for food authentication.
Anal Bioanal Chem
January 2025
Joint Research Centre, European Commission, 2440, Geel, Belgium.
The global food industry faces significant challenges in ensuring the safety and authenticity of food products. Economic adulteration and counterfeiting of food are estimated to cost the industry US$30-40 billion annually. Analytical testing plays a vital role in detecting food fraud.
View Article and Find Full Text PDFCapacity and limitations of microfluidic flow to increase solute transport in three-dimensional cell cultures.
J R Soc Interface
January 2025
Department of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, Sweden.
Culturing living cells in three-dimensional environments increases the biological relevance of laboratory experiments, but requires solutes to overcome a diffusion barrier to reach the centre of cellular constructs. We present a theoretical and numerical investigation that brings a mechanistic understanding of how microfluidic culture conditions, including chamber size, inlet fluid velocity and spatial confinement, affect solute distribution within three-dimensional cellular constructs. Contact with the chamber substrate reduces the maximally achievable construct radius by 15%.
View Article and Find Full Text PDFEffects of blood-brain barrier opening using ultrasound on tauopathies: A systematic review.
J Control Release
January 2025
Paris Brain Institute, ICM, Inserm U1127, CNRS UMR 7225, Sorbonne University, 75013 Paris, France.
Unlabelled: Blood-brain barrier opening with ultrasound can potentiate drug efficacy in the treatment of brain pathologies and also provides therapeutic effects on its own. It is an innovative tool to transiently, repeatedly and safely open the barrier, with studies showing beneficial effects in both preclinical models for Alzheimer's disease and recent clinical studies. The first preclinical and clinical work has mainly shown a decrease in amyloid burden in mice models and in patients.
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