Throughout literature, at a laboratory scale, extraction of RA and CA from rosemary leaves has been investigated using different technologies: conventional solvent extraction [10], microwave [11], [12] and [13], ultrasound assisted extraction [12], [14], [15] and [16], supercritical and subcritical fluid extraction [16], [17] and [18] pressurized liquid extraction [18] and [19], deodorization by Instant Controlled Pressure drop [20] or extraction with ionic liquids [21]. Table 1 details the experimental conditions of the mentioned processes. Some extraction processes, particularly conventional ones, are sometimes accompanied by several drawbacks, such as the use of harmful solvents, degradation of compounds of interest due to high temperature, long extraction time, difficulty to implement or high economic and energetic costs. That way, during the last few years, concepts of “Green chemistry” and “eco-extraction” emerged [22] and [23]. Extraction processes have been studied to be more energy saving, safe for users and environmental friendly than yesterday, without reducing extraction efficiency. Intensification of extraction processes taking in account those different aspects should become a new challenge for the design of extraction processes.
Throughout literature, at a laboratory scale, extraction of RA and CA from rosemary leaves has been investigated using different technologies: conventional solvent extraction [10], microwave [11], [12] and [13], ultrasound assisted extraction [12], [14], [15] and [16], supercritical and subcritical fluid extraction [16], [17] and [18] pressurized liquid extraction [18] and [19], deodorization by Instant Controlled Pressure drop [20] or extraction with ionic liquids [21]. Table 1 details the experimental conditions of the mentioned processes. Some extraction processes, particularly conventional ones, are sometimes accompanied by several drawbacks, such as the use of harmful solvents, degradation of compounds of interest due to high temperature, long extraction time, difficulty to implement or high economic and energetic costs. That way, during the last few years, concepts of “Green chemistry” and “eco-extraction” emerged [22] and [23]. Extraction processes have been studied to be more energy saving, safe for users and environmental friendly than yesterday, without reducing extraction efficiency. Intensification of extraction processes taking in account those different aspects should become a new challenge for the design of extraction processes.
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