Abstract
Subcritical water extraction is an eco-friendly method for the extraction of less polar compounds without the use of organic solvents. This study determined the extraction conditions that maximize the contents of 6-gingerol and 6-shogaol obtained from ginger pulp and peel. The highest yields of 6-gingerol (0.68 ± 0.08 mg/g), and 6-shogaol (0.39 ± 0.03 mg/g) were obtained from ginger pulp at the extraction conditions of 130 °C/25 min, and 190 °C/15 min. 6-Shogaol content increased with the increasing extraction temperature and extraction time due to the conversion of 6-gingerol to 6-shogaol by thermal cracking. The antioxidant activity of ginger extracts were increased depending on the increasing of 6-shogaol content.
Original language | English |
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Pages (from-to) | 149-155 |
Number of pages | 7 |
Journal | Food Chemistry |
Volume | 270 |
DOIs | |
State | Published - 1 Jan 2019 |
Keywords
- 6-Gingerol
- 6-Gingerol (PubChem CID: 442793)
- 6-Shogaol
- 6-Shogaol (PubChem CID: 5281794)
- Conversion
- Ginger peel
- Ginger pulp
- Subcritical water extraction
- Trolox (PubChem CID: 40634)