A method is presented in which pressurized-fluid extraction (PFE) is used for the extraction of chlorinated paraffins (CP) from the biodegradable fraction of source-separated household waste. The conditions that were optimized for high recovery in the extraction procedure were extraction time, temperature, and the use of different solvents and different sample particle sizes, Recoveries of CP from fortified household waste material were over 90%, with only few interferences when cyclohexane was used as solvent. Extraction yields from contaminated samples containing CP were further compared with recoveries obtained by use of Soxtec extraction. The results showed that PFE is a rapid, low-solvent-consuming technique, giving high yields.
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http://dx.doi.org/10.1007/s002160100833 | DOI Listing |
Carbohydr Polym
March 2025
Department of Pharmaceutics and Pharmaceutical Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address:
Recurrent aphthous stomatitis (RAS) is a common condition that manifests as ulcerative lesions in the oral mucosa. In this study, bilayer, mucoadhesive nanofibers loaded with pomegranate flower extract (PFE) were prepared using thiolated gelatin (TGel) and thiolated chitosan (TCS) as the active layer and drug-free polycaprolactone (PCL) as the backing layer. Gelatin (Gel) and chitosan (CS) were successfully thiolated (proven by Ellman's assay, solubility, H NMR, FTIR, Raman spectroscopy, and XRD) and electrospun into active nanofibrous layers with a diameter of 356.
View Article and Find Full Text PDFVet World
September 2024
Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, 80160, Thailand.
Background And Aim: Alzheimer's disease (AD) poses a significant health-care challenge, often linked to cognitive decline caused by oxidative stress. This study investigated the potential neuroprotective effects of the a leaf extract (PFE) in rats that exhibited scopolamine-induced dementia mimicking AD.
Materials And Methods: Forty-two male rats were treated with either donepezil (0.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess
December 2024
Chair of Food Science and Food Contact Materials, Technische Universität Dresden, Dresden, Germany.
Per- and polyfluoroalkyl substances (PFAS) are used in the production of PTFE based coatings for cookware. In this study, emission of PFAS and further volatile organic compounds (VOC) from kitchenware articles were investigated. First, method development for thermal extraction of baking trays, frying pans and baking mats at 250 °C was done by testing three different extraction devices.
View Article and Find Full Text PDFCurr Res Food Sci
August 2024
School of Food Industry, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand.
Pigmented Thai rice varieties, including purple (Riceberry) and red (Hommali), are gaining popularity due to their health benefits as a source of polyphenols that may exert a hypoglycemic effect through specific inhibition of amylolytic enzymes. This study determined the free phenolic extract from purple rice bran (PFE) to exhibit notably greater content of phytochemical compounds than did phenolic extracts from red rice bran, whether free (RFE) or bound fractions. This phytochemical content correlated with increased antioxidant activity and strong inhibition capacity against amylolytic enzymes, suppressing the conversion of carbohydrates into glucose.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
September 2024
Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, 00852, China.
Phyllanthus emblica L. fruit extract (PFE) was introduced to improve ZVI/HO technology, and the efficiency and mechanism of PFE promoting ZVI/HO technology were explored. With the introduction of PFE, the Norfloxacin (NOR) removal rate and k of the process were improved by 41.
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