期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 52, 期 23, 页码 7940-7946出版社
AMER CHEMICAL SOC
DOI: 10.1021/ie400527b
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资金
- Kumamoto University Global COE Program Global Initiative Center for Pulsed Power Engineering
- Grants-in-Aid for Scientific Research [23710094] Funding Source: KAKEN
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 degrees C. Continuous microwave irradiation at constant microwave power in a short irradiation time of 1 min also gave promising results.
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