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Wyszukujesz frazę "chitosan; absorption" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Adsorption studies of ketoconazole with chitosan
Autorzy:
Meler, Jan
Szcześniak, Maria
Pluta, Janusz
Grimling, Bożena
Powiązania:
https://bibliotekanauki.pl/articles/1035196.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
absorption
chitosan
ketokonazol
Opis:
Combinations of polymers and biopolymers of biologically active compounds in the last period have been the subject of intensive research. The active substance linked to a polymer often has a modified function and sometimes no action. On the other hand, the use of unsuitable polymers may result in a type of mismatch of drug-polymer. The aim of the study was to examine whether the active substance ketoconazole causes incompatibility with dietary supplements containing chitosan. Antifungal drug adsorption phenomenon was investigated by the static method in the concentration range of the single dose using a pharmaceutical model of the gastrointestinal tract. The test results show that the antifungal agent is adsorbed onto the chitosan in the pH ranges used, and the binding ability of the chitosan depends on the variety, or indirectly from the reaction environment. It was observed that the average sorption, depending on the variety of chitosan, was located in the limit from 94% to 100%. The increase of the size of the adsorption of anti-inflammatory drugs on the polymer with increasing pH from 7.6 to 8.0 can be explained by the swelling properties of chitosan, which grow with increasing pH of the environment in the direction of alkaline pH. Thus, the specific surface area and polymer sorption capacity is increased. Based on the above considerations, it can be concluded that, between the test drug and the polymer, there is antagonistic interaction involving the adsorption of the drug of this group on a polymer which is chitosan.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2014, 19; 111-117
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of different kinds of chitosan on bioavailability of anti-inflammatory drugs
Autorzy:
Meler, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1035484.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
naproxen sodium salt
ketoprofen
chitosan
absorption
Opis:
Chitosan as a dietary supplement has been used in the treatment of obesity due to its capability of binding bioactive compounds. A molecule of a cationic polymer, such as chitosan, may bind acid drugs. The aim of the study was to determine the binding capability of Ketoprofen and Naproxen sodium salt by chitosans contained in weight-loss supplements. The drug absorption was investigated by means of a dynamic method in a biopharmaceutical model imitating in vitro conditions including the required level of nutrients. Mean absorption of drugs by chitosan ranged from 92% to 96% depending on the environmental pH. The highest absorption rate was observed at above pH 7. Concluding, the studies confirmed that the investigated drugs interact with chitosan, what leads to decrease in their amount and affects the bioavailability of the drugs.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2010, 15; 127-134
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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