Abstract
Extract yield and concentration of selected active components are presented for the supercritical extraction of dried Saw Palmetto berries, St John's Wort flowers and stems, Kava root and stems, and aerial portions of Echinacea purpurea using supercritical CO 2; and CO 2+ethanol mixtures. Whole Saw Palmetto berries were obtained from America, and ground Kava root and stem from Fiji and Vanuatu. St Johns Wort and Echinacea were grown in New Zealand. Fatty acids and phytosterols were extracted from St Johns Wort at a total yield of 10–12% by mass. Kava lactones were obtained from Kava root at a yield of 3–8% by mass. The yield was highly dependent on the source and part of the plant used. Hyperforin, and plant waxes were recovered from St Johns Wort at a yield of 6–7% by mass. Hypericin was not extracted. Alkamides, plant waxes and other lipophilic solutes were extracted from Echinacea at a total yield of 2–3% by mass. Other desirable actives, such as chichoric acid and associated polyphenolic derivatives were not extracted.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
