Ethanolic extraction of Rosa rubiginosa soluble substances: Oil solubility equilibria and kinetic studies

Bioactive lipids, antiradical activity and stability of rosehip seed oil under thermal and photo-induced oxidation

“…The oil also contains high levels of carotenoids (i.e., lycopene, β-carotene and rubixanthin) (Franco et al, 2007;Silva et al, 2008). Rosehip seed oil could be used in the treatment of pigmentation, ulceration and scarring problems.…”

Modeling yerba mate aqueous extraction kinetics: Influence of temperature

“…There have not been any reports about the aqueous extraction kinetics of yerba mate; nevertheless, there are many studies about extraction kinetics of components of tea and coffee (Jaganyi and Madlala, 2000;Jaganyi and Price, 1999;Spitzer, 1993, 1994;Spiro and Chong, 1997;Spiro and Jago, 1982;Spiro and Selwood, 1984;Stapley, 2002;Zanoni et al, 1992), metabolites extraction kinetics as phenolics, antioxidants and fat substances in other products (Bucić -Kojić et al, 2007;Cacace and Mazza, 2003;Franco et al, 2007;Herodež et al, 2003;Ho et al, 2005;Jaganyi and Wheeler, 2003;Kashyap et al, 2007;Wongkittipong et al, 2004) and a report on yerba mate extraction optimization (Sambiassi et al, 2002). There are several kinetics models for the interpretation of experimental extraction data.…”

Extraction of oil from pequi fruit (<i>Caryocar Brasiliense</i>, Camb.) using several solvents and their mixtures

“…Franco et al (2007) observed an increased solubility of rubiginosa rose oil in ethanol with a rise in temperature. According to the authors, although solubility increases with a rise in temperature, it will be higher in hexane, with a low solid: liquid ratio being required in the extraction with eth anol to obtain the same performance.…”

“…That said, the use of ethanol as solvent in acetone and hexane mixtures is attractiv e to obtain pequi extract, due to the high expected yields, yet further studies should be done to investigate its feasibility as a pure solvent using higher temperatures. Franco et al (2007) points to the advantage of using ethanol as a solvent in the extraction of oil due to it being a renewable fuel and due to the low solubility of oil in ethanol at low temperatures, facilitating the separation of oil from ethanol.…”