期刊
JOURNAL OF SUPERCRITICAL FLUIDS
卷 135, 期 -, 页码 25-33出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.supflu.2017.12.034
关键词
Supercritical extraction; Burdock roots; Methanol; Antioxidant activity
资金
- CNPq [305393/2016-2, 477034/2013-6]
- CAPES
Arctium lappa root extractions were performed using supercritical CO2 (scCO(2)) with methanol as co-solvent. Experiments were performed under the following conditions: 10, 15 and 20 MPa and 313.15, 333.15 and 353.15 K varying the methanol to solids (raw material) mass ratio. The best extraction yield (8.25 wt%) was obtained at 20 MPa, 353.15 K and methanol to solids mass ratio of 1:1. The major compounds found in burdock extracts were diisooctyl phthalate, 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one, glycerol and pentadecanal. The extract with higher antioxidant potential was obtained at 15 MPa and 333.15 K (ratio of 4:1), while a higher number of phenolic compounds was found in the extract obtained at 20 MPa and 353.15 K and ratio of 4:1. High-pressure extraction process using scCO(2) with methanol is a promising approaching to obtain burdock root extracts with high biological activity.
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