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  1. 911 (旧)教養部
  2. 9112 信州大学教養部紀要 第二部, 自然科学
  3. Vol. 04

光照射によるチロシン,トリプトファン水溶液の黄褐変とH₂O₂ の影響について

http://hdl.handle.net/10091/4304
9877b143-c5e5-4ee8-b5df-e78b58e1c7fc
名前 / ファイル ライセンス アクション
Liberal_arts_S04-04.pdf Liberal_arts_S04-04.pdf (455.3 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2010-02-12
タイトル
タイトル 光照射によるチロシン,トリプトファン水溶液の黄褐変とH₂O₂ の影響について
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
その他(別言語等)のタイトル
その他のタイトル Optical Studies on the Yellowing of Tyrosine, Tryptophane and Their Mixed Solutions and the Effect of HO by Exposing to Light
著者 竹村, 寿二

× 竹村, 寿二

WEKO 49519

竹村, 寿二

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出版者
出版者 信州大学教養部
引用
内容記述タイプ Other
内容記述 信州大学教養部紀要. 第二部, 自然科学 4: 33-40(1970)
書誌情報 信州大学教養部紀要. 第二部, 自然科学

巻 4, p. 33-40, 発行日 1970-02-28
抄録
内容記述タイプ Abstract
内容記述 For a few years from 1962, the author has studied the yellowing of silk, aqueous tyrosine, tryptophane and their mixed solutions by exposing them to light applying the optical method, especially colorimetries. Now these studies are fragmentary and not systematized, so the author wishes to arrange and unify the results in the former parts of this paper. In regard to the relation between reflectance R (%) of silk or transmittance T (%) of the mixed solutions by irradiating them to monochromatic lights and the time of exposure t (hr), the following empirical formula was obtained with satisfactory accuracy. R (or T)= a (t + k )-b. (0 < b << 1) Consequently, the yellowing velocity is - dR/dt (or - dT/dt) = ab / (t + k )b÷1 Here, the constant k, depending on the wavelength of irradiating light, is positive in the case of silk and indicates the coloring before the measurement. On the other hand, in the case of mixed solutIons, k is negative and denotes the exsistence of induction period because of the delay of appearance of color. Up till the present day, many studies have been made concerning the production of H₂O₂ at the time of the yellowing of aqueous solutions of tyrosine and tryptophane by light. In such a case that the mixed solutions were added H₂O₂ previously, the author ascertained that k is reduced to zero and therefore the induction period was shortened exceedingly. In consequence, H₂O₂ yields are closely connected with the yellowing degree, induction period and photosensitization of these solutions, dominating as the initiator of coloring.
資源タイプ(コンテンツの種類)
内容記述タイプ Other
内容記述 Article
ISSN
収録物識別子タイプ ISSN
収録物識別子 0583-0613
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AN0012116X
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