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JAEA Reports

FNCA guideline on development of hydrogel and oligosaccharides by radiation processing

Kudo, Hisaaki*; Yoshii, Fumio; Kume, Tamikazu*

JAEA-Technology 2009-050, 54 Pages, 2009/10

JAEA-Technology-2009-050.pdf:14.3MB

This report summarizes the current status of development of hydrogel and oligosaccharides by radiation (electron and $$gamma$$ rays) processing in Asia countries, as an outcome of activities of the FNCA (Forum for Nuclear Co-operation in Asia) industry group during the phase 2 (2006-2008), as one of FNCA Guidelines. The nine countries participates in the phase 2 of the FNCA-industry group, focusing on radiation processing of natural polymers. Participating countries have been studying radiation processing of natural polymer such as chitosan from shrimp/crab shell and carrageenan taken from seaweeds, in terms of crosslinking for gel and degradation for oligosaccharides. The hydrogel and oligosaccharides obtained by radiation processing are expected application in the fields of medical,environmental conservation and aqua-cultures.

Journal Articles

Inheritance from low-level radioactive waste

Yanagisawa, Kazuaki; Kume, Tamikazu*; Makuuchi, Keizo*; Inoue, Tomio*; Komoda, Fumio*; Maeda, Mitsuru*

Dekomisshoningu Giho, (39), p.44 - 61, 2009/03

A benefit born as an inheritance from disposed low level radioactive waste is considered. In the present study, a direct economic scale of application of radiation in Japanese industry, agriculture and medicine is taken as parameter for quantifying the size of benefit. In 2006, the economic scale is about 21 billion dollars for industry, 2.5 billion dollars for agriculture and 14 billion dollars for medicine. Economic scale covered the all fields is totaled 37 billion dollars. Due to those benefit, one can drive a car and play an internet, pleasure the dinning food. Diagnosis and treatment by nuclear medicine can possible to survive the millions of lives and resulting in improving the quality of life, decreasing pain and suffering. However, most Japanese (more than 80%) may not aware those benefits to date. This report is prepared for aiming at disseminating those benefits to our peoples.

Journal Articles

Status of food irradiation in the world

Kume, Tamikazu*; Furuta, Masakazu*; Todoriki, Setsuko*; Uenoyama, Naoki*; Kobayashi, Yasuhiko

Radiation Physics and Chemistry, 78(3), p.222 - 226, 2009/03

 Times Cited Count:123 Percentile:99.45(Chemistry, Physical)

Journal Articles

Quantity and economic scale of food irradiation in the world

Kume, Tamikazu*; Furuta, Masakazu*; Todoriki, Setsuko*; Uenoyama, Naoki*; Kobayashi, Yasuhiko

Radioisotopes, 58(1), p.25 - 35, 2009/01

JAEA Reports

Proceedings of the FNCA 2007 Workshop on Application of Electron Accelerator; Radiation Processing of Natural Polymer; 22$$sim$$26 November 2007, Hochiminh, Vietnam

Tamada, Masao; Kume, Tamikazu

JAEA-Conf 2008-009, 219 Pages, 2008/12

JAEA-Conf-2008-009.pdf:29.54MB

This workshop was jointly executed by Vietnamese Atomic Energy Commission and Japan Atomic Energy Agency and co-sponsored by Ministry of Education, Culture, Sports, Science, and Technology, Japan and Vietnamese Science and Technology Agency under the cooperation of International Atomic Energy Agency (IAEA). The purpose of this workshop is to discuss the practical applications of the radiation processing of the natural polymer and to make the plan of the practical project. The Philippines, India, Pakistan, Sri Lanka, and Egypt participated as member states of RCA. The crosslinked natural polysaccharides have been applied to the wound dressing sheets in India, South Korea, and Malaysia. The degraded chitosan was used for the fish culturing in China. In the graft polymerization, practical use as the soil conditioner was advanced in Vietnam. The next meeting will be scheduled to be held in Shanghai, China in October, 2008.

Journal Articles

Economic scale of nuclear application

Saito, Shinzo*; Tanaka, Ryuichi*; Kume, Tamikazu; Inoue, Tomio*; Takahashi, Shoji*

Genshiryoku eye, 54(5), p.34 - 41, 2008/05

no abstracts in English

Journal Articles

Detection of damage using ESR method to irradiated wheat flour

Ukai, Mitsuko*; Matsuura, Masaaki*; Ogawa, Satoko*; Kume, Tamikazu; Kikuchi, Masahiro; Sakashita, Tetsuya; Funayama, Tomoo; Kobayashi, Yasuhiko

JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 118, 2008/03

Irradiation of food is a non-thermal treatment and a method of cold pasteurization. This pasteurization technique retains the quality of foods as prepared and harvested. Recently, the use of this sterilization technology by irradiation through various electromagnetic waves or rays of elementary particles is gaining wide applications. Electron spin resonance (ESR) spectroscopy has been applied for the evaluation of irradiation on the wide variety of foods. We have reported on a new ESR protocol for the analysis for irradiated foods. In the present study, we will report on the radiation-induced radicals containing in wheat flour using ESR spectroscopy. We shall describe new radical species in the irradiated wheat flour by comparison with non-irradiated wheat flour.

Journal Articles

Current status of food irradiation in the world

Kume, Tamikazu

Genshiryoku eye, 53(12), p.19 - 22, 2007/12

no abstracts in English

Journal Articles

Food irradiation for reduction of aflatoxins

Kume, Tamikazu

Hoshasen To Sangyo, (115), p.20 - 24, 2007/09

no abstracts in English

JAEA Reports

Proceedings of the FNCA 2006 Workshop on Application of Electron Accelerator; Radiation processing of natural polymer, 12-16 December 2006, Kuala Lumpur, Malaysia

Tamada, Masao; Kume, Tamikazu

JAEA-Conf 2007-007, 142 Pages, 2007/08

JAEA-Conf-2007-007.pdf:22.9MB

This workshop was co-sponsored by the Ministry of Education, Culture, Sports, Science and Technology, Japan and the Ministry of Science, Technology and Innovation, Malaysia and jointly organized by the Japan Atomic Energy Agency and the Malaysian Nuclear Agency. The main objectives of the workshop were to discuss the commercial status of radiation processing of natural polymer in the participating countries and to prepare the work plan for the FNCA activities on radiation processing of natural polymer. Experts on radiation processing from China, Indonesia, Japan, Korea, Malaysia, the Philippines, Thailand and Vietnam attended the workshop that consisted of a National Executive Management Seminar, exhibition, invited lectures, country reports, technical visit and discussion. The work plan for the FNCA activities was provided including the collection and compilation of data on the commercialized products, expert mission to assist FNCA member countries and preparation of FNCA Guidelines for the end-users. The FNCA 2007 workshop on EB will be held in Vietnam.

Journal Articles

Food irradiation; Status of the world and Japan

Kume, Tamikazu

Hoshasen To Sangyo, (114), p.51 - 54, 2007/06

no abstracts in English

Journal Articles

Detection method for irradiated foods using ESR

Ukai, Mitsuko*; Matsuura, Masaaki*; Kume, Tamikazu; Kobayashi, Yasuhiko; Kikuchi, Masahiro; Sakashita, Tetsuya

JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 71, 2007/02

Journal Articles

Enhancement of plant growth activity of irradiated alginate

Nagasawa, Naotsugu; Luan, L. Q.*; Yagi, Toshiaki; Yoshii, Fumio; Kume, Tamikazu; Nakanishi, Tomoko*; Tamada, Masao

JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 55, 2007/02

The sodium alginate was irradiated by $$gamma$$-ray, and plant growth activity test and structural change of the product were studied. It was found that the concentration of 100 mg/L of alginate irradiated at 75 kGy in 4 % aqueous solution was the highest for plant growth. Separation of the degraded product was performed using ultrafiltration membranes and found that fraction with molecular weight in the range of 1-3 kDa (6-15 units) not only showed a remarkable effect on the plant growth, but also increased the activity of plant enzymes; ${it alcohol dehydrogenase, phenylalanine ammonia-lyase}$. This fraction was stronger than one of the enzymatic degradation product. This differences proposed formation of carbonyl and carboxyl groups along with the main-chain scission.

Journal Articles

Cooperative research on radiation processing of natural polysaccharides between VAEC and JAEA

Hiroki, Akihiro; Nagasawa, Naotsugu; Yagi, Toshiaki; Kume, Tamikazu; Yoshii, Fumio; Tamada, Masao

JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 56, 2007/02

Cooperative research between Vietnam Atomic Energy Commission (VAEC) and JAEA has been performed over a period of six years. In the cooperative research, natural polysaccharides such as alginate, chitin, and chitosan were irradiated by $$gamma$$-ray to produce various functional materials. It was found that the alginate and the chitosan degraded with $$gamma$$-irradiation were effective as a growth promoter for rice and carrot and an anti-bacterial agent, respectively. On the other hand, the hydrogels obtained by $$gamma$$-irradiating carboxymethylchitosan aqueous solution in paste-like state showed a high adsorption capacity for Cu (II) ions as well as the anti-bacterial activity.

Journal Articles

Radiation sterilization

Kume, Tamikazu

Genshiryoku eye, 53(1), p.13 - 15, 2007/01

The status of radiation sterilization was reviewed in the special feature on "Development of Radiation Application in Industry". Due to the strong penetration power and sterilization ability, the radiation is commercially used for sterilization of medical products, laboratory animal feeds, food packaging materials, etc. For the sterilization of medical products, autoclave, EOG (ethylene oxide) and radiation are mainly used. In Japan, the sterilization using $$gamma$$-ray was developed in 1980s. Recently, the treatment of electron beam is increasing because of large throughput and low oxidation degradation. Sterilization of herbal medicine, food irradiation of spices and dry vegetables are expecting to commercialize near future.

Journal Articles

Current status of food irradiation in the world

Kume, Tamikazu

Enerugi Rebyu, 26(5), p.23 - 26, 2006/05

no abstracts in English

Journal Articles

A New visualization technique for the study of the accumulation of photoassimilates in wheat grains using [$$^{11}$$C]CO$$_{2}$$

Matsuhashi, Shimpei; Fujimaki, Shu; Uchida, Hiroshi*; Ishioka, Noriko; Kume, Tamikazu

Applied Radiation and Isotopes, 64(4), p.435 - 440, 2006/04

 Times Cited Count:18 Percentile:77.84(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

Conversion of endohedral $$^{133}$$Xe-fullerene to endohedral $$^{133}$$Xe-fullerenol to be used in nuclear medicine

Watanabe, Satoshi; Ishioka, Noriko; Sekine, Tsutomu*; Kudo, Hiroshi*; Shimomura, Haruhiko*; Muramatsu, Hisakazu*; Kume, Tamikazu

Journal of Radioanalytical and Nuclear Chemistry, 266(3), p.499 - 502, 2005/11

 Times Cited Count:9 Percentile:54.78(Chemistry, Analytical)

no abstracts in English

167 (Records 1-20 displayed on this page)