Takuya Suetsugu

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Abstract Citrus juice processing residues are mainly composed of peel, juice sack and seed. The peel, especially, consists of bioactive compounds such as flavones. Supercritical carbon dioxide (SC-CO2) extraction of flavonoid was carried out at a pressure of 30 MPa and temperature ranging from 80 to 160°C. Ratio of water and ethanol as a co-solvent was(More)
On the powerline communication method, there is a problem of the notch frequencies of the powerline. The notch frequency is a frequency with very low impedance. It is generated by a reflection at the end of powerline. Data transmission is obstacle at the notch frequencies. Notch frequencies are unpredictable because they depend on the length of powerline(More)
Citrus sphaerocarpa Hort. ex Tanaka is one of many popular sour citruses in Japan. Its juice processing peel residues contain a lot of useful compounds including essential oil. Our interests mainly focused on the extraction of this essential oil using supercritical carbon dioxide (SC-CO2), an environmentally benign and generally regarded as safe solvent(More)
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