巻号一覧
47 巻 (2012)
- 1 号 p. 1-
47 巻, 1 号
選択された号の論文の5件中1～5を表示しています
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報文
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岸田 敬吾, 貝森 良彦, 川村 翔栄, 坂本 侑輝, 中村 秀夫, 菊地 正博, 下山 雄平, 小林 泰彦, 鵜飼 光子2012 年 47 巻 1 号 p. 1-5
発行日: 2012年
公開日: 2013/04/01
ジャーナル フリーBy electron spin resonance (ESR) spectroscopy, we revealed free radicals in γ-ray irradiated foods ; black pepper, green coffee bean and ginseng. We also analyzed the decay behavior of radiation induced free radicals during storage of irradiated foods. The ESR spectrum of experimental irradiated foods consists of a sextet signal centered at g =2.0 and a singlet signal at the same g -value position and a singlet signal at g =4.0. The singlet signal at g =2.0 is originated from organic free radicals and its peak intensity showed the dependence of γ-ray irradiation dose levels. The signal intensity was decreased during storage. Only after 3 hours of radiation treatment the peak intensity was decreased fast and after that the intensity was decreased slowly. The relaxation times, T1 and T2, of radiation induced free radicals showed the variations before and after irradiation. During long time storage period it was shown that T1 was increased and T2 was decreased. By analysis of decay process using the simulation methods based on the theory of reaction speed, it is considered that at least two kinds of radicals were induced in irradiated foods during long time storage.抄録全体を表示PDF形式でダウンロード (627K) -
亀谷 宏美, 菊地 正博, 等々力 節子, 古田 雅一, 小林 泰彦, 原 英之, 下山 雄平, 鵜飼 光子2012 年 47 巻 1 号 p. 6-10
発行日: 2012年
公開日: 2013/04/01
ジャーナル フリーWe attempted measurement of radicals in irradiated black pepper using pulse-ESR and CW-ESR. Relaxation times (T1, T2) of radicals in black pepper were measured using pulse-ESR. T1 and T2 were also calculated theoretical analysis using CW-ESR parameter. We succeeded in measurement of the field swept echo of irradiated black pepper using pulse-ESR. Pulse-ESR and CW-ESR were able to calculate T1 and T2. T1 values were showed no dose dependence. T2 values showed increase according to irradiation. We revealed that T1 and T2 from pulse-ESR and CW-ESR were changed similarly before and after irradiation.抄録全体を表示PDF形式でダウンロード (413K) -
阪井 俊夫, 石川 悦子, 小池 佳都子, 古田 雅一2012 年 47 巻 1 号 p. 11-18
発行日: 2012年
公開日: 2013/04/01
ジャーナル フリー
電子付録Bacillus spores are most popular contaminant with spices. Spores can survive after decontamination treatment because of their high resistance against heat, antimicrobial agents, and irradiation.We observed that supersteam-heated paprika powder showed a retarded growth of survivors within sausage mixtures. In this study, we employed calorimetry as well as conventional colony counting method to monitor the effects of decontaminated paprika powder on the growth of isolates from untreated paprika powder as well as standard Bacillus subtilis spores. As a result, when the microbes was mixed with the paprika and the sausage, the growth was drastically suppressed, suggesting that paprika powder might contain antimicrobial agents affecting the microbial growth.抄録全体を表示PDF形式でダウンロード (750K) -
陳 蘇蘇, 堤 智昭, 高附 巧, 松田 りえ子, 亀谷 宏美, 斉藤 希巳江, 古田 雅一, 等々力 節子2012 年 47 巻 1 号 p. 19-28
発行日: 2012年
公開日: 2013/04/01
ジャーナル フリー
電子付録近年，天然のカシューナッツ中の2-アルキルシクロブタノン類（2-ドデシルシクロブタノン，2-テトラデシルシクロブタノン，2-テトラでセニルシクロブタノン）の存在が報告されている。本研究では超臨界流体抽出により，市販カシューナッツ試料から，2-アルキルシクロブタノン類を抽出し，高分解能ガスクロマトグラフ質量分析計により検出を行ったが，非照射試料から2-アルキルシクロブタノン類を検出することはできなかった。一方，1 kGy 以上の照射試料では，2-ドデシルシクロブタノン，2-テトラデシルシクロブタノン，2-テトラでセニルシクロブタノンが検出された。照射による線量1kGy あたりの2-ACBの生成効率，nmole/mmole 親脂肪酸/kGy は，2-dDCB ; 1.3, 2-tDCB ; 1.3 および 2-tDeCB；1.7であった。抄録全体を表示PDF形式でダウンロード (554K)
総説
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久米 民和2012 年 47 巻 1 号 p. 29-36
発行日: 2012年
公開日: 2013/04/01
ジャーナル フリー
電子付録PDF形式でダウンロード (963K)
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