Microwave–Hydrothermal Extraction and Degradation of Fucoidan from Supercritical Carbon Dioxide Deoiled Undaria pinnatifida
| Autor: | Mitsuru Sasaki, Armando T. Quitain, Motonobu Goto, Takahisa Kai |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Undaria Supercritical carbon dioxide biology Chemistry Fucoidan General Chemical Engineering Extraction (chemistry) General Chemistry biology.organism_classification Polysaccharide Pulp and paper industry Industrial and Manufacturing Engineering Hydrothermal circulation chemistry.chemical_compound Degradation (geology) Microwave |
| Zdroj: | Industrial & Engineering Chemistry Research. 52:7940-7946 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie400527b |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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