The influence of tocopherol (300 mg/day for 7 days) on skin temperature, arterial blood pressure and pulse rate at local cooling of upper limbs (submersion of both hands in water at +10 degrees C for 10 minutes) in volunteers living in Dixon (74 degrees N in the Taimir national region) was investigated. The findings indicate that the intake of tocopherol prevents temperature decrease in response to cold exposure and promotes more effective initial temperature recovery. Under the influence of tocopherol the spastic reactions of microvessels in the skin to cold became milder. In addition the intake of tocopherol prevents undesirable hemodynamic shifts caused by cold exposure.
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Nutrients
January 2025
Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria.
Individuals with special metabolic demands are at risk of deficiencies in fat-soluble vitamins, which can be counteracted via supplementation. Here, we tested the ability of micellization alone or in combination with selected natural plant extracts to increase the intestinal absorption and bioefficacy of fat-soluble vitamins. Micellated and nonmicellated vitamins D3 (cholecalciferol), D2 (ergocalciferol), E (alpha tocopheryl acetate), and K2 (menaquionone-7) were tested in intestinal Caco-2 or buccal TR146 cells in combination with curcuma (), black pepper (), or ginger () plant extracts.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
We investigated the impacts of personal care products (PCPs) on dermal exposure to semi-volatile organic compounds (SVOCs), including phthalates, organophosphate esters, polycyclic aromatic hydrocarbons (PAHs), ultraviolet filters, and p-phenylenediamines, through an experiment from volunteers, explored the impact mechanisms of PCP ingredients on dermal exposure, and predicted the PCP effects on SVOC concentrations in human serum using machine learning. After applying PCPs, namely lotion, baby oil, sunscreen, and blemish balm, the dermal adsorption of SVOCs increased significantly by 1.63 ± 0.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Université Le Havre Normandie, Normandie Univ, URCOM, UR 3221, Le Havre F-76600, France. Electronic address:
In this study, fungal chitosan (FC) and gum Arabic (GA) were combined to develop non-animal complex coacervates for encapsulation. Optimal coacervate formation occurred at pH 5 with a 1:4 (FC:GA) weight ratio. Innovative complementary approaches, including rheology coupled with phase-contrast microscopy, revealed that FC-GA coacervates could withstand high shear rates, reverting to their original structure afterward, making them suitable for industrial applications.
View Article and Find Full Text PDFInt J Pharm
January 2025
University of Florence, Department of Chemistry, Via Ugo Schiff 6 50019 Sesto Fiorentino, Italy. Electronic address:
Usnic acid (UA) is one of the most abundant secondary metabolites of lichens. Its antibacterial, anti-inflammatory, antiviral, and antitumor properties make it one of the few commercially available lichens compounds. Owing to its low solubility it has limited application, for that reason encapsulation in polymeric micelles (UA-PM) has been used to solve this aspect.
View Article and Find Full Text PDFFood Chem
January 2025
Food Technology, Faculty of Pharmacy, Lascaray Research Center, University of the Basque Country (UPV/EHU). Paseo de la Universidad n° 7, 01006 Vitoria-Gasteiz, Spain. Electronic address:
The effect of adding a tocopherol-rich natural extract (TNE) at 0.1 % and 0.5 % on sunflower oil stability under frying and accelerated storage conditions was studied using H NMR and DI-SPME-GC/MS.
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