Investigating the effects of grinding time and grinding load on content of terpenes in extract from fennel obtained by supercritical fluid extraction
2017
Hatami, Tahmasb | Johner, Júlio Cezar Flores | Meireles, M. Angela A.
This paper investigated effects of grinding time (GT) and mass of raw material in mill (ms) on both global SFE yield from Fennel and its main volatile oil content namely Anethol and Fenchone. For this purpose, extractor of SFE equipment was filled with milled Fennel obtained at various values of ms, from 15g to 35g, and GT, from 15s to 20min. Extractor was subjected to pressure of 200bar, temperature of 313K, and supercritical CO2 flow rate of 1.67×10−4kg/s for 10min. Then, extract composition was evaluated by Gas Chromatography (GC) analysis. Moreover, for better understanding how GT and ms affect SFE yield and extract composition, their effects were initially investigated on temperature raising and diameter of Fennel seeds during grinding process. It was found that ms and GT have considerable effects on Anethole and Fenchone content of Fennel extract.
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