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Форма документа : Стаття із журналу
Шифр видання :
Автор(и) : Rybachuk V. D.
Назва : The choice of fillers when creating natural zeolite tablets by the wet granulation method
Місце публікування : Вісн. фармації. - Х., 2018. - № 4. - С. 37-42 (Шифр ВУ18/2018/4)
MeSH-головна: ТЕХНОЛОГИЯ ФАРМАЦЕВТИЧЕСКАЯ -- TECHNOLOGY, PHARMACEUTICAL
ТАБЛЕТКИ -- TABLETS
ЦЕОЛИТЫ -- ZEOLITES

ЛАКТОЗА -- LACTOSE
ЦЕЛЛЮЛОЗА -- CELLULOSE
Анотація: Tablets are one of the most popular among all pharmaceutical dosage forms. Properties of tablets depend on a number of factors; the content of excipients is the most important of them. Among the complex of excipients of different functional orientation fillers, which can significantly affect the technological properties of tablets, in particular, hardness and friability of tablets, occupy a special placeThe studies on selection of the qualitative composition of fillers for creation of natural zeolite tablets by pressing with the preliminary wet granulation have been performed, and the optimal composition of fillers has been proposed to provide the production of tablets which properties correspond to the current requirements of the SPhU
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Форма документа : Стаття із журналу
Шифр видання :
Автор(и) : Rybachuk V. D.
Назва : The choice of the quantitative composition of excipients when creating the natural zeolite paste
Місце публікування : Вісн. фармації. - Х., 2018. - № 3. - С. 39-43 (Шифр ВУ18/2018/3)
MeSH-головна: ТЕХНОЛОГИЯ ФАРМАЦЕВТИЧЕСКАЯ -- TECHNOLOGY, PHARMACEUTICAL
МАЗИ -- OINTMENTS
ЦЕОЛИТЫ -- ZEOLITES
ФАРМАЦЕВТИЧЕСКИЕ СРЕДСТВА ВСПОМОГАТЕЛЬНЫЕ -- PHARMACEUTIC AIDS
КРЕМНИЯ ДИОКСИД -- SILICON DIOXIDE
Анотація: The properties of pastes depend on a number of factors, the most important of them are the concentration of the solid phase and the nature of the dispersion medium. Aim. To study the effect of the amounts of active substances and excipients on the pharmacotechnological properties of a natural zeolite paste (clinoptilolite) and to optimize the composition of the finished dosage form. Materials and methods. The objects of the study were model compositions of pastes containing the active substance – natural zeolite powder (clinoptilolite) in the concentrations of 20-30 %, a thickener – silicon dioxide in the concentrations of 6.0-8.0 %, and a plasticizer – glycerol in the concentrations of 6.0-8.0 %. Samples of pastes also contained flavoring agents – sorbitol and apple flavoring of 3 % each, and 0.02 % of a preservative – sorbic acid. To select the pharmaceutical factors significantly affecting the study object the fractional factorial experiment 23 was used with equal duplication of experiments. Three quantitative factors were studied. The responses were consistency of the paste, effective viscosity at the shear rate Dr = 5.0 s-1, the thixotropic coefficient and the adsorption activity in relation to methylene blue. The relationship between factors and responses was expressed and interpreted using the regression equations. Results and discussion. It has been determined that the samples studied belong to the thixotropically structured pseudoplastic systems with the structure of the coagulation type. It has been proven that natural zeolite (clinoptilolite) together with silicon dioxide has a structuring effect on the disperse system and the adsorption activity of the paste as a whole; the following composition is optimal (g): natural zeolite (clinoptilolite) 25.0; silicon dioxide 7.0; glycerol 5.0; sorbic acid 0.02; sorbitol 3.0; apple flavor 3.0; purified water 56.98. Conclusions. The studies on the choice of the quantitative content of excipients for obtaining the natural zeolite paste have been conducted; the optimal composition of active substances and excipients has been proposed.
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