Fractional separation of SCF extracts from marjoram leaves: Mass transfer and optimization

摘要: Abstract Carbon-dioxide SCF extraction from herbaceous substrates produces nearly solid extracts because of simultaneous solubilization essential oil components and cuticular waxes. Fractionation the extract is required to isolate oil. A mechanism proposed explain coextraction leaf waxes, based on different mass transfer mechanisms for two compound families. Cuticular waxes are hypothesized as mainly solubilized by leaching, while supposed dependent complex diffusion phenomena. If operate modeled, fractional separation supercritical solution can be realized in a series separators, taking advantage solubilities families their concentrations solution. Marjoram (Origanum Majorana L.) isolation has been studied an application procedure. complete fractionation high quality produced.