Idham, Zuhaili and Mohd. Rasidek, Noor Azwani and Putra, Nicky Rahmana and Rizkiah, Dwila Nur and Arsad, Nur Husnina and Che Yunus, Mohd. Azizi (2023) Comparison of phenolic compound, colour value, and antioxidant activity of roselle calyces extract between modified supercritical carbon dioxide and conventional extraction. Journal of Advanced Research in Applied Sciences and Engineering Technology, 29 (2). pp. 204-211. ISSN 2462-1943
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Official URL: http://dx.doi.org/10.37934/araset.29.2.204211
Abstract
Supercritical carbon dioxide (SC-CO2) is a clean and green technology for extracting polyphenols and antioxidants from roselle (Hibiscus Sabdariffa) as nutraceutical ingredients and high-value co-products development. To increase the SC-CO2 fluid affinity towards polar compounds, general regard as a safe (GRAS) solvent, ethanol-water was added in a small amount as a modifier. Dry roselle calyces were extracted using modified SC-CO2 and conventional methods (Soxhlet and Shaking Water Bath) to determine whether the SC-CO2 technology may improve the extraction of phenolic content and antioxidant activity. The results showed that the SC-CO2 extract had a significantly higher yield of total phenolic and flavonoid content than the conventional extraction method. The conventional method produces a redder but lighter extract than SC-CO2 extraction. SC-CO2 also had a higher antioxidant activity as measured by DPPH radical scavenging. These results suggest that SC-CO2 technology increases the quantity and quality of roselle calyces’ extract. The findings increased the reliability of using this technique to produce high-value products from this high-value plant. Roselle as a low-cost sustainable local crop source, as well as SC-CO2 as a clean energy process with low environmental impact, excellent solvent recyclability, and reduced chemical use, could increase the market value of antioxidant-rich extract.
Item Type: | Article |
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Uncontrolled Keywords: | Antioxidant; Modified supercritical carbon dioxide; Phenolic; Roselle. |
Subjects: | Q Science > Q Science (General) |
Divisions: | Science |
ID Code: | 106091 |
Deposited By: | Muhamad Idham Sulong |
Deposited On: | 06 Jun 2024 08:23 |
Last Modified: | 06 Jun 2024 08:23 |
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