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Journal Articles

Relaxation time of radiation-induced radicals in $$gamma$$-ray irradiated amino acids

Nagata, Natsuki*; Komoda, Seiichi*; Kikuchi, Masahiro; Nakamura, Hideo*; Kobayashi, Yasuhiko; Ukai, Mitsuko*

JAEA-Review 2015-022, JAEA Takasaki Annual Report 2014, P. 103, 2016/02

no abstracts in English

Journal Articles

Study on detection method for 8-hydroxyguanine induced in bovine livers by $$gamma$$-irradiation

Kikuchi, Masahiro; Kobayashi, Yasuhiko

Shokuhin Shosha, 50(1), p.3 - 8, 2015/10

no abstracts in English

Journal Articles

ESR signal changes recorded in $$gamma$$-irradiated bovine livers

Kikuchi, Masahiro; Kobayashi, Yasuhiko

Shokuhin Shosha, 50(1), p.9 - 12, 2015/10

no abstracts in English

Journal Articles

Peak-fitting analysis with Gaussian line shapes against experimental ESR spectrum consisting of multiple peak

Kikuchi, Masahiro; Nagata, Natsuki*; Komoda, Seiichi*; Kameya, Hiromi*; Ukai, Mitsuko*; Kobayashi, Yasuhiko

Shokuhin Shosha, 50(1), p.13 - 19, 2015/10

no abstracts in English

Journal Articles

Dose responses of irradiated fresh papaya recorded on ESR at different temperature

Kikuchi, Masahiro; Ukai, Mitsuko*; Kobayashi, Yasuhiko

JAEA-Review 2014-050, JAEA Takasaki Annual Report 2013, P. 89, 2015/03

Journal Articles

Analysis of radicals induced in irradiated amino acid using Pulse-ESR

Kishida, Keigo*; Kikuchi, Masahiro; Nakamura, Hideo*; Kobayashi, Yasuhiko; Ukai, Mitsuko*

JAEA-Review 2014-050, JAEA Takasaki Annual Report 2013, P. 90, 2015/03

Journal Articles

Foods being better or worse after $$gamma$$-irradiation

Chiba, Etsuko*; Iizuka, Tomoko*; Ichikawa, Mariko*; Ukai, Mitsuko*; Kikuchi, Masahiro; Kobayashi, Yasuhiko

Hoshasen To Sangyo, (137), p.29 - 32, 2014/12

no abstracts in English

Journal Articles

Performance evaluation of the European Committee Standardization Method EN1785 for the detection of irradiated processed food

Tsutsumi, Tomoaki*; Adachi, Rika*; Takatsuki, Satoshi*; Nei, Daisuke*; Kameya, Hiromi*; Todoriki, Setsuko*; Kikuchi, Masahiro; Kobayashi, Yasuhiko; Matsuda, Rieko*; Teshima, Reiko*

Shokuhin Shosha, 49(1), p.9 - 15, 2014/12

no abstracts in English

Journal Articles

Electron-spin relaxation times of irradiated fructose measured with pulsed ESR

Kikuchi, Masahiro; Kameya, Hiromi*; Shimoyama, Yuhei; Ukai, Mitsuko*; Kobayashi, Yasuhiko

JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 85, 2014/03

Journal Articles

Relaxation times of radicals induced in irradiated foods using pulse-ESR and CW-ESR

Kishida, Keigo*; Kawamura, Shoei*; Kikuchi, Masahiro; Nakamura, Hideo*; Kobayashi, Yasuhiko; Ukai, Mitsuko*

JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 86, 2014/03

Journal Articles

Measurement of radical scavenging activity of irradiated Kampo extracts using ESR spin-trap method

Ota, Yui*; Kawamura, Shoei*; Kikuchi, Masahiro; Kobayashi, Yasuhiko; Ukai, Mitsuko*; Nakamura, Hideo*

Radioisotopes, 63(3), p.119 - 129, 2014/03

The radical scavenging activity (RSA) of 13 kinds of $$gamma$$-ray irradiated Kampo extracts were studied by ESR spin-trap method. The RSA against alkoxy radical and hydroxyl radical were measured using new spin trapping reagent CYPMPO. The RSA against these two radicals were evaluated using GSH for alkoxy RSA and L-ascorbic acid for hydroxy RSA as a standard antioxidant reagent. We revealed that a few Kampo extracts showed high RSA against alkoxy radical and hydroxy radical. This RSA of Kampo extracts was changed by $$gamma$$-ray irradiation treatment. Using ESR spin-trap method, it is concluded that the effect of radiation treatment on RSA of Kampo extracts were able to detect.

Journal Articles

Studies on the relaxation time of radicals in irradiated foods using pulse-ESR and CW-ESR

Kishida, Keigo*; Kawamura, Shoei*; Kameya, Hiromi*; Nakamura, Hideo*; Kikuchi, Masahiro; Kobayashi, Yasuhiko; Ukai, Mitsuko*

Radioisotopes, 63(3), p.131 - 137, 2014/03

Using Pulse-Electron Spin Resonance (Pulse-ESR) spectroscopy and Continuous Wave-Electron Spin Resonance (CW-ESR) spectroscopy, we revealed the relaxation time (T$$_{1}$$, T$$_{2}$$) of radicals induced in irradiated foods. The relaxation time was directly analyzed by Pulse-ESR. Using CW-ESR, the relaxation time was calculated by the measured spectrum parameter indirectly. We succeeded in the detection of Pulse-ESR signal of irradiated hard wheat flour and irradiated black pepper. It was suggested that using CW-ESR T$$_{1}$$ and T$$_{2}$$ can be calculated effectively, but the value was tend to slightly lower due to the parameters for calculation are affected by the contents of food especially protein.

Journal Articles

Analysis of radicals induced in irradiated cereal flour using ESR

Kawamura, Shoei*; Kishida, Keigo*; Kikuchi, Masahiro; Kobayashi, Yasuhiko; Ukai, Mitsuko*

Shokuhin Shosha, 48(1), p.3 - 10, 2013/09

no abstracts in English

Journal Articles

Analysis of decay of radicals induced in irradiated foods during long storage

Kishida, Keigo*; Kawamura, Shoei*; Nakamura, Hideo*; Kikuchi, Masahiro; Kobayashi, Yasuhiko; Ukai, Mitsuko*

Shokuhin Shosha, 48(1), p.11 - 18, 2013/09

no abstracts in English

Journal Articles

Development of small specimen test techniques for the IFMIF test cell

Wakai, Eiichi; Kim, B. J.; Nozawa, Takashi; Kikuchi, Takayuki; Hirano, Michiko*; Kimura, Akihiko*; Kasada, Ryuta*; Yokomine, Takehiko*; Yoshida, Takahide*; Nogami, Shuhei*; et al.

Proceedings of 24th IAEA Fusion Energy Conference (FEC 2012) (CD-ROM), 6 Pages, 2013/03

Journal Articles

Rapid ESR measurement of irradiated fresh papaya

Kikuchi, Masahiro; Shimoyama, Yuhei; Ukai, Mitsuko*; Kobayashi, Yasuhiko

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 78, 2013/01

no abstracts in English

Journal Articles

ESR studies on decay of radicals induced in irradiated foods

Kaimori, Yoshihiko; Sakamoto, Yuki*; Kawamura, Shoei*; Kishida, Keigo*; Kikuchi, Masahiro; Nakamura, Hideo*; Kobayashi, Yasuhiko; Ukai, Mitsuko*

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 79, 2013/01

no abstracts in English

Journal Articles

Electron-spin relaxation phenomena in irradiated saccharides detected by pulsed electron paramagnetic resonance spectroscopy

Kikuchi, Masahiro; Kameya, Hiromi*; Shimoyama, Yuhei; Ukai, Mitsuko*; Kobayashi, Yasuhiko

Radiation Physics and Chemistry, 81(10), p.1639 - 1645, 2012/10

 Times Cited Count:1 Percentile:10.14(Chemistry, Physical)

no abstracts in English

Journal Articles

Analysis of radicals induced in irradiated foods

Kishida, Keigo*; Kaimori, Yoshihiko*; Kawamura, Shoei*; Sakamoto, Yuki*; Nakamura, Hideo*; Kikuchi, Masahiro; Shimoyama, Yuhei; Kobayashi, Yasuhiko; Ukai, Mitsuko*

Shokuhin Shosha, 47(1), p.1 - 5, 2012/09

no abstracts in English

Journal Articles

Analysis of relaxation times of radicals in irradiated black pepper using pulse-ESR and CW-ESR

Kameya, Hiromi*; Kikuchi, Masahiro; Todoriki, Setsuko*; Furuta, Masakazu*; Kobayashi, Yasuhiko; Hara, Hideyuki*; Shimoyama, Yuhei; Ukai, Mitsuko*

Shokuhin Shosha, 47(1), p.6 - 10, 2012/09

no abstracts in English

144 (Records 1-20 displayed on this page)