Citation
Abstract
The main objective of the present study was to investigate the effect of solvent type and ratio as well as the extraction techniques (i.e. supercritical fluid extraction (SFE) and conventional solvent extraction) on betacyanins and antioxidant activity of the peel and fresh extract from the red pitaya (Hylocereus polyrhizus). The peel and flesh extracts obtained by SFE at 25 MPa pressure and 10% EtOH/water (v/v) mixture as a co-solvent contained 24.58 and 91.27 mg/100 ml total betacyanin, respectively; while the most desirable solvent extraction process resulted in a relatively higher total betacyanin in the peel and flesh extracts (28.44 and 120.28 mg/100 ml, respectively). The major betacyanins identified in the pitaya peel and flesh extracts were betanin, isobetanin, phyllocactin, butyrylbetanin, isophyllocactin and iso-butyrylbetanin. The flesh extract had the stronger antioxidant activity than the peel extract when the higher proportion of ethanol to water (E/W) was applied for the extraction.
Download File
Official URL or Download Paper: http://www.sciencedirect.com/science/article/pii/S...
|
Additional Metadata
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Food Science and Technology Halal Products Research Institute |
| DOI Number: | https://doi.org/10.1016/j.foodchem.2016.01.121 |
| Publisher: | Elsevier |
| Keywords: | Red pitaya; Hylocereus polyrhizus; Betacyanins; Supercritical fluid extraction; Antioxidant activity; Solvent extraction |
| Depositing User: | Nabilah Mustapa |
| Date Deposited: | 18 May 2016 03:27 |
| Last Modified: | 18 May 2016 03:27 |
| Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.foodchem.2016.01.121 |
| URI: | http://psasir.upm.edu.my/id/eprint/43177 |
| Statistic Details: | View Download Statistic |
Actions (login required)
 |
View Item |