Supercritical carbon dioxide extraction of carotenoids from marigold flower using orthogonal test design

摘要

Supercritical carbon dioxide extraction had been used in the extraction conditions for carotenoids from the marigold flower (Tagetes erecta L.). Five significant factors (particle size, temperature, pressure, time and co-solvent addition) on total carotenoid yield were obtained using one-at-a-time design (p≤0.05). The optimal extraction conditions were 55°C, 50 MPa and 180 min. Under these conditions, the yield of carotenoids was 6.872mg/g.