E.A. Aboutabl

F.M. Hammouda

I.A. Saleh

M. Vinatoru

N.S. Abdel-Azim

T.J. Mason

Ultrasonics Sonochemistry

The use of ultrasound-assisted extraction (UAE) for the extraction of Chlorogenic Acid (CA) from Cynara scolymus L., (artichoke) leaves using 80% methanol at room temperature over 15 minutes gave a significant increase in yield (up to a 50%) compared with maceration at room temperature and close to that obtained by boiling over the same time period. A note of caution is introduced when comparing UAE with Soxhlet extraction because, in the latter case, the liquid entering the Soxhlet extractor is more concentrated in methanol (nearly 100%) that the solvent in the reservoir (80% methanol) due to fractionation during distillation. The mechanism of UAE is discussed in terms of the effects of cavitation on the swelling index, solvent diffusion and the removal of a stagnant layer of solvent surrounding the plant material

Saleh, I. A.

Vinatoru, Mircea

Mason, Timothy J.

Aboutabl, E. A.

Hammouda, F. M.

Coventry University Pure Portal

A possible general mechanism for ultrasound-assisted extraction (UAE) suggested from the results of UAE of chlorogenic acid from Cynara scolymus L. (artichoke) leaves

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https://pure.coventry.ac.uk/ws/files/3944204/A%20possible%20general%20mechanism%20_ULTSON_3078.pdf

A possible general mechanism for ultrasound-assisted extraction (UAE) suggested from the results of UAE of chlorogenic acid from Cynara scolymus L. (artichoke) leaves

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