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Wyszukujesz frazę "Crodamol PC" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Studies on the formation of O/W nano-emulsions, by low-energy emulsification method, suitable for cosmeceutical applications
Autorzy:
Jaworska, Małgorzata
Sikora, Elżbieta
Zielina, Michał
Ogonowski, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1039485.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
nano-emulsions
crodamol GTCC
crodamol PC
oleic acid
Opis:
The formation of oil/water (O/W) nano-emulsions suitable for cosmeceutical application was studied. Nano-emulsions were prepared by using phase inversion composition (PIC) method, one of the low-energy emulsification methods. The process consist of stepwise water addition to oil/surfactant mixture, at T = 25°C. Caprylic/capric triglycerides (GTCC), propylene glycol dicaprylate/dicaprate (PC) and oleic acid (OA) were applied as an oil phase. Polysorbate 80 was used as the surfactant. Kinetic stability of the nano-emulsions was analyzed by measuring droplet size as a function of time for different oil/surfactant ratio. The particles size distribution was analyzed by means DLS measurement technique (Dynamic Light Scattering), using Zetasizer Nano ZS (Malvern Instruments, UK). One of triterpenoic acid, practically non-water soluble substance was selected as an active and incorporated into the stable formulation. The obtained results proved that the nanoemulsion NE-T80-GTCC-20:80 based on caprylic/capric triglycerides with the oil/surfactant ratio O/S = 2 0:80 and the droplet size r = 25 nm was the most stable one and additionally showed the highest solubilisation capacity for the triterpene.
Źródło:
Acta Biochimica Polonica; 2013, 60, 4; 779-782
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of O/W micro- and nano-emulsions based on propylene glycol diester as a vehicle for geranic acid
Autorzy:
Jaworska, Małgorzata
Sikora, Elżbieta
Ogonowski, Jan
Konieczna, Monika
Powiązania:
https://bibliotekanauki.pl/articles/1039096.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
nano-emulsions
microemulsion
Crodamol PC
geranic acid
release profile
Opis:
Nano- and microemulsions containing as the oil phase caprylic/capric propylene glycol diesters (Crodamol PC) were investigated as potential vehicle for controlled release of geranic acid. The influence of emulsifiers and co-surfactants on stability of the emulsions was investigated. Different kind of polysorbates (ethoxylated esters of sorbitan and fatty acids) were applied as the emulsifiers. The short-chain alcohols (ethanol, 1-propanol, 1-butanol) were used as co-surfactants. The emulsions were prepared at ambient temperature (25°C), by the phase inversion composition method (PIC). The stable O/W high dispersed emulsion systems based on Crodamol PC, of mean droplets size less than 200 nm, were prepared. Microemulsions stabilized by the mixture of Polisorbat 80 and 1-butanol were characterized by the largest degree of dispersion (137 nm) and the lowest PDI value (0.094), at surfactant/co-surfactant: oil weight ratio 90:10. The stable nano-emulsion (mean droplet size of 33 nm) was obtained for surfactant: oil (S:O) weight ratio 90:10, without co-surfactant addition. This nano-emulsion was chosen to release studies. The obtained results showed that the prepared stable nano-emulsion can be used as a carrier for controlled release of geranic acid. The active substance release from the nano-emulsion and the oil solution, after 24 hours was 22%.
Źródło:
Acta Biochimica Polonica; 2015, 62, 2; 229-233
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microemulsions Based on Propylene Glycol Diesters of Caprylic and Capric Acids
Autorzy:
Jaworska, M.A.
Sikora, E.S.
Ogonowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/779236.pdf
Data publikacji:
2013
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Propylene Glycol Dicaprylate/Dicaprate (Crodamol PC),
nanoemulsions
microemulsions
low energy method
Opis:
The aim of this work was preparation and characterization of o/w nano and microemulsions containing Crodamol PCŽ as the oil phase. An influence of surfactants system applied in formulations on the properties of the obtained emulsions has been studied. The emulsions were prepared by phase inversion composition method. The measurement of the internal phase droplet size and the study of rheological properties were done. The obtained results showed that the prepared transparent emulsion systems are nano and microemulsion formulation. Moreover, it was concluded that the microemulsions stability and the size of the internal phase droplets depended on the type and the concentration of emulsifier and on the ratio of water phase to oil. Rheological studies have confirmed that the obtained microemulsions showed pseudoplastic behaviour.
Źródło:
Polish Journal of Chemical Technology; 2013, 15, 1; 68-73
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ rodzaju i stężenia emulgatorów z grupy polietoksylowanych estrów sorbitanu i kwasów tłuszczowych na właściwości reologiczne nanoemulsji na bazie Crodamolu PC
Influence of kind and concentration of emulsifiers from the group of polyethoxylated fatty acids sorbitol esters on the rheological properties of Crodamol PC-based nanoemulsions
Autorzy:
Jaworska, M.
Sikora, E.
Ogonowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/142667.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Przemysłu Chemicznego. Zakład Wydawniczy CHEMPRESS-SITPChem
Tematy:
nanoemulsje
Crodamol PC
inwersja faz
ciecze nienewtonowskie
Nanoemulsion, Crodamol P
phase inversion
non-Newtonian liquids
Opis:
Celem badań było otrzymanie i zbadanie właściwości reologicznych nanoemulsji typu O/W stabilizowanych emulgatorami z grupy polisorbatów, w których jako fazę olejową zastosowano Crodamol PCŽ. Preparaty otrzymano metodą inwersji faz. Rozmiar cząstek fazy wewnętrznej zmierzono za pomocą techniki dynamicznego rozpraszania światła (DLS) stosując aparat Malvern Zetasizer. Badania reologiczne przeprowadzono stosując reometr rotacyjny Brookfield Model R/S Plus. Wyniki potwierdziły, że otrzymane nanoemulsje wykazują charakter cieczy nienewtonowskich, pseudoplastycznych.
The aim of this work was the preparation and rheological characterization of o/w nanoemulsions stabilized by polysorbates, containing Crodamol PC as the oil phase. The formulations were prepared by phase inversion composition method. Measurements of the internal phase droplets size were carried out using Malvern Zetasizer apparatus. The rheological properties of the emulsions systems were studied by using Brookfield rheometer, Model - R/S Plus. The obtained results confirmed that the prepared nanoemulsions showed non-Newtonian, pseudo-plastic behavior.
Źródło:
Chemik; 2013, 67, 2; 119-122
0009-2886
Pojawia się w:
Chemik
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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