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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Experimental study on the release of active ingredients from gel matrices
 Volhinava, Anastasiya ; Enev, Vojtěch (referee) ; Sedláček, Petr (advisor)
This thesis deals with the characterization of hydrogels containing humic substances and salicylic acid. Experimental study of the transport of active substances was performed from the gel matrix over the skin and synthetic membranes. During this work was writing literature review focused on the use of gels with humic substances in cosmetic, medical and pharmaceutical industries. The model humic hydrogels was prepared with salicylic acid and their characterization by basic methods of material analysis. These basic methods were and visual assessment of consistency during the preparation and rheology. The study of the release of active and humic substances was performed due to the vertical diffusion cells. The amount of released humic substance was characterized by UV-VIS method and the amount of released salicylic acid from gel matrix was determined by HPLC.
Detailed record
Experimental study on the release of active ingredients from gel matrices
 Volhinava, Anastasiya ; Enev, Vojtěch (referee) ; Sedláček, Petr (advisor)
This thesis deals with the characterization of hydrogels containing humic substances and salicylic acid. Experimental study of the transport of active substances was performed from the gel matrix over the skin and synthetic membranes. During this work was writing literature review focused on the use of gels with humic substances in cosmetic, medical and pharmaceutical industries. The model humic hydrogels was prepared with salicylic acid and their characterization by basic methods of material analysis. These basic methods were and visual assessment of consistency during the preparation and rheology. The study of the release of active and humic substances was performed due to the vertical diffusion cells. The amount of released humic substance was characterized by UV-VIS method and the amount of released salicylic acid from gel matrix was determined by HPLC.
Detailed record

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