Table 1 Extraction conditions and outcomes for the supercritical fluid pre-treatment of corn stover

Stigmata of corn flower

50.88 °C, 41.8 MPa, 2 h, flow rate 20 L/h, 20% aq. ethanol as co-solvent, 2.488 mL/g

Flavonoids

2011

[53]

Corn

55 °C, 45 MPa, 2 h, flow rate 8000 mL/min

β-sitosterol, stigmasterol, and campesterol

2015

[39]

Corn stover

65 °C, 400 bars, 4 h, flow rate 300 g/min, 3 fractionations, 150 bar/50 °C, 85 bar/35 °C, and ATM/50 °C

Hydrocarbons, sat. fatty acids, unsat. fatty acids, fatty alcohols, sterols, and steroid ketones

2015

[42]

Purple corn cob

45 °C, 420 bar, flow rate 1.65 g/min

Ethanol as co-solvent, flow rate 0.395 g/min, 50 °C, 400 bar, flow rate 1.65 g/min (for Anthocyanins)

Water as co-solvent, flow rate 0.5 mL/min 65 °C, 450 bar, flow rate 1.65 g/min (for Flavonoids)

Water as co-solvent, flow rate 0.5 mL/min (for phenolics)

Anthocyanins, flavonoids and phenolics

2016

[54]

Sweet corn cob

60 °C, 350 bar, 1 h, flow rate 15 g/min, 15% aq. ethanol as co-solvent

Lutein, zeaxanthin, and β-carotene

2019

[55]