| Presentation | 2018-01-23 [Poster Presentation] Elucidation of disruption mechanism of microalgae by ultrasonic cavitation Takashi Ikeno, Naoto Goda, Shohei Yamanaka, Keisuke Haraguchi, Ken Yamamoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is a well-known fact that underwater microorganisms can be inactivated through the administration of ultrasonic energy. We have reported that the main reason behind the deactivation is cell disruption via the ultrasound treatment of samples such as algae and fungi. In addition, we observed that the mechanical resonance of the cell is responsible for its disruption. In this study, two species classified as Diatoms (Chaetoceros gracilis, Chaetoceros sp.) and Prasinophyceae (Tetraselmis sp.) were used. The average particle sizes were about 4.0 μm, 4.5 μm, and 8.7 μm, respectively. Three species of algae were irradiated by ultrasound with different frequencies of 20 kHz, 400 kHz, 1.0 MHz, 2.4 MHz, 3.4 MHz, and 4.4 MHz to investigate the disruption mechanism of algae. As a result, algae with larger particle sizes tended to be disrupted at lower frequencies. In addition, under the same acoustic power, for each frequency, it was difficult to observe cell disruption in Tetraselmis sp. and it did not change as much as the two species of Diatoms. It is observed that the area deformation of microorganism’s cell membrane by ultrasonic cavitation is important for cell disruption. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ultrasonic cavitation / Chaetoceros / Prasinophyceae / Resonance |
| Paper # | US2017-83 |
| Date of Issue | 2018-01-16 (US) |
| Conference Information | |
| Committee | US / EA |
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| Conference Date | 2018/1/23(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Minoru Kurosawa(Tokyo Inst. of Tech.) / Suehiro Shimauchi(NTT) |
| Vice Chair | Nobuyuki Endoh(Kanagawa Univ.) / Shinichi Takeuchi(Toin Univ. of Yokohama) / Mitsunori Mizumachi(Kyutech) |
| Secretary | Nobuyuki Endoh(Univ. of Toyama) / Shinichi Takeuchi(Univ. of Tokyo) / Mitsunori Mizumachi(Akita Pref. Univ.) |
| Assistant | Takenobu Tsuchiya(Kanagawa Univ.) / TREVINO Jorge(Tohoku Univ.) / Nobutaka Ito(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics / Technical Committee on Engineering Acoustics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Elucidation of disruption mechanism of microalgae by ultrasonic cavitation |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic cavitation |
| Keyword(2) | Chaetoceros |
| Keyword(3) | Prasinophyceae |
| Keyword(4) | Resonance |
| 1st Author's Name | Takashi Ikeno |
| 1st Author's Affiliation | Kansai University(Kansai Univ.) |
| 2nd Author's Name | Naoto Goda |
| 2nd Author's Affiliation | Kansai University(Kansai Univ.) |
| 3rd Author's Name | Shohei Yamanaka |
| 3rd Author's Affiliation | Kansai University(Kansai Univ.) |
| 4th Author's Name | Keisuke Haraguchi |
| 4th Author's Affiliation | Kansai University(Kansai Univ.) |
| 5th Author's Name | Ken Yamamoto |
| 5th Author's Affiliation | Kansai University(Kansai Univ.) |
| Date | 2018-01-23 |
| Paper # | US2017-83 |
| Volume (vol) | vol.117 |
| Number (no) | US-398 |
| Page | pp.pp.7-12(US), |
| #Pages | 6 |
| Date of Issue | 2018-01-16 (US) |