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  5. Principle 5: reduce the number of unit operations

Quizzed article | REF: J4922 V1

The six principles of Green extraction of natural products

Authors: Farid CHEMAT, Anne-Sylvie FABIANO-TIXIER, Maryline ABERT-VIAN

Publication date: November 10, 2018, Review date: February 10, 2025 | Lire en français

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    5. Principle 5: reduce the number of unit operations

    5.1 Context

    With today's economic and environmental concerns, the plant extraction industry needs to develop processes that are efficient in terms of extraction yields, reduced environmental impact, operator safety and space utilization. Typically, a complete extraction process consists of the following stages:

    (1) pre-treatment of plant raw material by drying and grinding to increase contact surface and solvent penetration;

    (2) solid-liquid extraction with a suitable solvent ;

    (3) solid-liquid separation by filtration or centrifugation;

    (4) solvent removal and recycling to eliminate any residual solvent in the final extract or residue.

    Such a process requires long...

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