Microwave–Hydrothermal Extraction and Degradation of Fucoidan from Supercritical Carbon Dioxide Deoiled Undaria pinnatifida
Abstract
Marine algae, such as Undaria pinnatifida, commonly known as “wakame” in Japan, contain valuable bioactive organic compounds including lipids and polysaccharides. However, substandard seaweeds that do not meet strict quality standards are normally discarded as wastes or returned to the sea, a situation which is becoming a serious environmental concern. In this work, hydrothermal treatment of the supercritical carbon dioxide deoiled wakame was investigated using microwave and conventional heating to recover and degrade Undaria polysaccharides (i.e., fucoidan) into highly potent low-molecular-weight components of about 5–30 kDa. Results showed advantages of microwave heating compared to conventional heating, obtaining the target molecular weight at a temperature close to 140 °C. Continuous microwave irradiation at constant microwave power in a short irradiation time of 1 min also gave promising results.
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When compared to conventional extraction, MAE could faster obtain extracts with low molecular weight products of degraded fucoidan.
“When compared to the conventional extraction, MAE could faster obtain the extracts with low molecular weight products of degraded fucoidan.”
From Overview on the Application of Modern Methods for the Extraction of Bioactive Compounds from Marine Macroalgae (2018) · cites this paper as [79]
During microwave irradiation with hydrothermal heating, the degradation of fucoidan was enhanced due to thermal effects such as molecular agitation, localized heating and improved mass transfer.
“During the microwave irradiation with hydrothermal heating, the degradation of fucoidan was enhanced due to the thermal effects such as molecular agitation, localized heating and improved mass transfer [79].”
From Overview on the Application of Modern Methods for the Extraction of Bioactive Compounds from Marine Macroalgae (2018) · cites this paper as [79]
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References 35 · Cited by 97
- Authors
- Quitain, A. T., Kai, T., Sasaki, M., & Goto, M.
- Affiliations
- Kumamoto University (JP)
- Nagoya University (JP)
- Corresponding author
- Quitain, Armando T.
- Venue
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-05-31
- Volume
- 52
- Issue
- 23
- Pages
- 7940-7946
- ISSN
- 0888-5885 (ISSN-L)
- 1520-5045
- OpenAlex
- W2084146650
- Cited by
- 97
- References
- 35
- Citations by year
- 2026: 4 · 2025: 11 · 2024: 4 · 2023: 5 · 2022: 6 · 2021: 17 · 2020: 8 · 2019: 13 · 2018: 6 · 2017: 9 · 2016: 3 · 2015: 5 · 2014: 4 · 2013: 2
- FWCI
- 7.12
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Industrial & Engineering Chemistry Research (publishedVersion)
- Funders
- Japan Society for the Promotion of Science (23710094)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal plant biology
- Life Sciences › Agricultural and Biological Sciences › Food Science › Polysaccharides Composition and Applications
- Keywords
- fucoidan, Undaria pinnatifida, microwave-assisted hydrothermal treatment, low molecular weight fucoidan, microwave heating, seaweed waste valorization, molecular weight reduction
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