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	Provedor de dados CIGR Journal (1) Autor Olawale, Adegboyega Surajudeen (1) Palavra-chave Extract concentration (1) Extraction kinetics (1) Extraction yield (1) Medicinal herbs (1) Time constant (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2013 (1) País China (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Solid-liquid extraction of sorrel calyces with ethanol CIGR Journal Olawale, Adegboyega Surajudeen.   Ethanol extraction of three particle size distributions of sorrel (Hibiscus sabdariffa) calyces was investigated.  Extraction rate was found to increase with reduced particle size, increased temperature and solvent mass (solvent-feed ratio).  At 30oC, maximum yield or concentration was achieved with 50:1 solvent-feed ratio but no substantial increment occurred in these parameters beyond 20:1 ratio.  No degradation of the extract’s components occurred between 27oC and 70oC since linear relation between extraction yield and temperature was sustained.  Peleg equation and a variant of it gave the best fit for extraction kinetics.  The smallest calyx particles ( Tipo: Info:eu-repo/semantics/article Palavras-chave: Extraction kinetics; Time constant; Extract concentration; Extraction yield; Medicinal herbs. Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2577 Registros recuperados: 1 Primeira ... 1 ... Última

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