Effects of ultraviolet radiation on the color of compounded papers containing wasted tea leaves

Tetsuya Takahashi, Wakako Kasai, Tetsuo Kondo

研究成果: ジャーナルへの寄稿学術誌査読

抄録

Influence of ultraviolet irradiation on papers containing wasted tea leaves was studied. Ultraviolet irradiation generally caused reddish coloration. Irradiation under dry atmosphere caused stronger coloration than under ambient conditions. Presence of oxygen did not cause significant difference in coloration. Thin-layer chromatographic analysis showed disappearance of chlorophylls a and b, and did not disappearance of theaflavin by UV irradiation. The results strongly suggest that the coloration is caused by photochemical conversions of catechins to reactants (theaflavin-like compounds).

本文言語英語
ページ(範囲)261-266
ページ数6
ジャーナルJournal of Fiber Science and Technology
66
10
DOI
出版ステータス出版済み - 10月 2010

All Science Journal Classification (ASJC) codes

  • 化学工学(その他)
  • 材料科学(その他)
  • ポリマーおよびプラスチック
  • 産業および生産工学

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