| Title |
Green extraction of phenolic compounds and carrageenan from the red alga Kappaphycus alvarezii |
| ID_Doc |
24415 |
| Authors |
Rudke, AR; da Silva, M; de Andrade, CJ; Vitali, L; Ferreira, SRS |
| Title |
Green extraction of phenolic compounds and carrageenan from the red alga Kappaphycus alvarezii |
| Year |
2022 |
| Published |
|
| DOI |
10.1016/j.algal.2022.102866 |
| Abstract |
Kappaphycus alvarezii (KA) is a widespread worldwide alga, and one of the main industrial sources of carra-geenan. Besides, KA biomass also contains other substances such as phenolic compounds and fatty acids that can be recovered by several methods. Then, this work aimed to investigate the eco-friendly methods, for the recovery of fatty acids, phenolics, and carrageenan fractions. The eco-friendly methods are faster, produce higher yields, and can be cost-effective in comparison with conventional methods. The performance of the eco-friendly methods (supercritical fluid, pressurized liquid, microwave assisted, and high-pressure carrageenan extrac-tions) was compared with conventional techniques (maceration or Soxhlet) in terms of yield, chemical profile by gas and liquid chromatography, total phenolic content (TPC), antioxidant activity by 1,1-diphenyl-2-picrylhydra-zyl (DPPH) and Ferric reducing antioxidant power (FRAP) procedures, viscosity and gel strength of the carra-geenan fraction. The results showed pressurized liquid extraction samples with the highest antioxidant potential and TPC (up to 2 to 4 times higher than conventional). Besides, the carrageenan fraction was efficiently recovered by microwave assisted extraction (MAE) and by pressurized-water carrageenan extraction (PWCE), and the samples presented viscosity and gel strength similar to that obtained by water maceration. |
| Author Keywords |
Red seaweed; Circular economy; Non -conventional extraction methods; Biopolymer |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000867441600009 |
| WoS Category |
Biotechnology & Applied Microbiology |
| Research Area |
Biotechnology & Applied Microbiology |
| PDF |
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