Combined vacuum impregnation and ultrasound was proposed as an alternative method to improve the infusion of ascorbic acid in berry fruit. The effect of ultrasound application at different stages of impregnation - vacuum, relaxation, and both stages - on the qualitative characteristics of impregnated cranberries was investigated. The quality assessment was based on porosity, color, antioxidant capacity, anthocyanin, polyphenol and structure compound content. Ultrasound-assisted vacuum impregnation contributed to higher ascorbic acid content, smaller relative color difference, and greater antioxidant properties. It was found that the degree of impregnation varies considerably and depends on the stage of using ultrasound. Due to more favorable quality attributes, the conclusion was reached that ultrasound should be applied during the relaxation stage of vacuum impregnation.
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http://dx.doi.org/10.1016/j.ultsonch.2022.106117 | DOI Listing |
Plast Reconstr Surg Glob Open
December 2024
Department of Bone and Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, China.
A 57-year-old man presented with a tibial shaft fracture treated with tibial intramedullary nail fixation and plate and screw fixation for fibular fracture. Two weeks postoperatively, the patient developed skin sloughing with exposed bone and metal at the fracture site. Three weeks postoperatively, a physical examination revealed swelling of the left lateral malleolus and lower leg, a skin defect of approximately 3 × 5 cm at the lower third of the left tibia with an exposed fracture site and hardware in between the fracture fragments.
View Article and Find Full Text PDFSensors (Basel)
November 2024
School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China.
Monitoring of real-time flow and defects in the vacuum-assisted resin infusion (VARI) process can provide important guidelines for full impregnation of dry reinforcement. A weak fiber Bragg grating array was employed to obtain quasi-distributed monitoring results in real-time. Sensitivity testing of different kinds of coated optical fiber sensors (OFs) was carried out first, and the polyacrylate-coated OF showed a greater wavelength-shift response than the polyimide-coated one.
View Article and Find Full Text PDFMaterials (Basel)
November 2024
Zhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications, Ningbo Key Laboratory of Special Energy Materials and Chemistry, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
This study investigated the influence of preformed composition and pore size on the microstructure and properties of SiC/SiC composites fabricated via reactive melt infiltration (RMI). The process began with the impregnation of SiC fiber cloth with phenolic resin, followed by lamination and pyrolysis. Subsequent steps included further impregnations with phenolic resin, SiC slurry, and carbon black slurry, each followed by additional pyrolysis.
View Article and Find Full Text PDFFood Res Int
January 2025
Dpto. Tecnología de Alimentos, Instituto Universitario de Ingeniería de Alimentos - FoodUPV, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain. Electronic address:
The hydrolysis of legume proteins improves their nutritional and functional properties. Usually done by mixing flour with an enzyme solution, the process can be simplified using vacuum enzyme impregnation during soaking. This study used vacuum impregnation with papain or bromelain to obtain hydrolysed broad bean flours.
View Article and Find Full Text PDFJ Mech Behav Biomed Mater
December 2024
Federal University of São Paulo, Institute of Science and Technology, Bioceramics Laboratory, 330 Talim St, 12231-280, São José dos Campos, SP, Brazil. Electronic address:
3D printing in scaffold production offers a promising approach, enabling precise architectural design that closely mimics the porosity and interconnectivity of natural bone. β-Tricalcium phosphate (β-Ca₃(PO₄)₂, β-TCP), with a chemical composition similar to the inorganic component of bone, is a widely used material for scaffold fabrication. Recent advances have made it possible to functionalize ceramic scaffolds to improve bone regeneration and repair while enabling the in situ release of therapeutic agents to treat bone infections.
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