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Title:Formuliranje naproksena v polimere s superkritičnimi fluidi : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Doplihar, Klemen (Author)
ID Knez Marevci, Maša (Mentor) More about this mentor... New window
ID Cör Andrejč, Darija (Comentor)
Files:.pdf UN_Doplihar_Klemen_2020.pdf (2,01 MB)
MD5: 198D31699547DF949FD4004FA92048AC
PID: 20.500.12556/dkum/9e964e29-be46-40ee-9cfb-c70f6438e99c
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Topnost farmacevtskih učinkovin je ena izmed najbolj pomembnih lastnosti. Ravno pravšnja topnost zdravila pomeni razliko med učinkovitim in neučinkovitim zdravilom. Nova zdravila imajo slabo topnost v vodi, zato vedno več farmacevtskih združb uporablja superkritične fluide za izboljšanje topnosti. Na topnost substance vplivajo tlak, temperatura, dodatek substanc, velikost delcev itd. Pri tem pa moramo paziti, da z eksperimenti ne poškodujemo strukture zdravila, saj lahko to povzroči spremembo v topnosti, biorazpoložljivosti in toksičnosti. Postopki, kot so določanje topnosti s superkritičnimi fluidi, RESS, PGSS in SAS, so se zelo razvili, kar je korak v pravo smer za sintezo zdravil. Diplomska naloga prikazuje določanje topnosti naproksena s superkritičnim CO2 pri različnih tlakih in temperaturah ter dodatkom različnih koncentracij so-topil. Za proces mikronizacije sta bila uporabljena procesa RESS in SAS, s katerima smo spremenili velikost in obliko delcev. Ugotovili so, da se topnost izboljša z višanjem temperature in z višanjem gostote raztopine oz. z višanjem tlaka. Dokazano je bilo, da je dodatek so-topila v splošnem povečal topnost naproksena, kjer je najboljši učinek imel 2-propanol. Največji učinek je imelo so-topilo pri najnižji koncentraciji le-tega. Procesa mikronizacije sta bila uspešna, saj so se delci zmanjšali v mikro in nano območje. Posnetki slik s SEM so pokazali, da so bili delci manjši pri procesu SAS, vendar je XRD graf pokazal, da so se delci naproksena strukturno spremenili, kar pa ima vpliv na topnost in biorazpoložljivost naproksena.
Keywords:naproksen, topnost, superkritični fluid, CO2
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[K. Doplihar]
Year of publishing:2020
Number of pages:VIII, 27 str.
PID:20.500.12556/DKUM-77578 New window
UDC:544.351.3-139(043.2)
COBISS.SI-ID:32385283 New window
NUK URN:URN:SI:UM:DK:FJHUTB7D
Publication date in DKUM:08.10.2020
Views:1425
Downloads:111
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:03.09.2020

Secondary language

Language:English
Title:Formulation naproxen in polymers with supercritical fluids
Abstract:The solubility of active pharmaceutical ingredients is one of the most important properties. It is precisely the best legal remedies that make the difference between effective and ineffective medicines. New drugs have poor water solubility, so more and more pharmaceutical companies are using supercritical fluids to improve their solubility. The solubility of a substance is affected by pressure, temperature, addition of substances, particle size, etc. However, we must take care not to damage the structure of the drug by experiments, as this may lead to a change in solubility, bioavailability and toxicity. Procedures such as the determination of solubility with supercritical fluids, RESS, PGSS and SAS have evolved greatly, which is a step in the right direction for drug synthesis. The thesis presents the determination of solubility of naproxen in supercritical CO2 at different pressures and temperature and the addition of different concentrations of co-solvents. The RESS and SAS process was used for the micronization process, with which we changed the size and shape of the particles. They found that solubility improves with increasing temperature and with increasing density of the solution or by increasing the pressure. The addition of a co-solvent was generally shown to increase the solubility of naproxen, where 2-propanol had the best effect. The co-solvent had the greatest effect at its lowest concentration. The micronization process was successful as the particles were reduced to the micro and nano range. Images with SEM showed that the particles were smaller in the SAS process, but the XRD graph showed that the naproxen particles changed structurally, which affected the solubility and bioavailability of naproxen.
Keywords:naproxen, solubility, supercritical fluid, CO2


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