Extraction of rosmarinic acid from Melissa officinalis L. by heat-, microwave- and ultrasound-assisted extraction techniques: A comparative study through response surface analysis

1. Caleja, C.
2. Barros, L.
3. Prieto, M.A.
4. Barreiro, M.F.
5. Oliveira, M.B.P.P.
6. Ferreira, I.C.F.R.