*4.1.2 Microwave solvent-assisted extraction*

Microwave solvent-assisted extraction (**Figure 3**) have revolutionized the field of bioactive compound extraction. This technique has significantly reduced extraction times, minimized organic solvent consumption, and resulted in energy and cost savings [30].

Moreover, microwave solvent-assisted extraction is an environmentally friendly and sustainable method that contributes to the development of "green" procedures.

A new and efficient method for extracting essential oils from *Angelica sinensis* root has been developed using a microwave-assisted deep eutectic natural solvent (NADES). The study found that NADES based on choline chloride and citric acid were more effective in extracting essential oils [31].
