緑茶の単寧物質に就てTea Tannin IIの分離

• 辻村 みちよ

  お茶の水女子大学食品化学研究室

• 高須 英

  お茶の水女子大学食品化学研究室

書誌事項

タイトル別名

• On the Tea Tannins in Green Tea. Isolation of Tea Tannin II in Crystalline State

抄録

On the paper chromatogram of crude tea tannin, fannin, four spots are to be seen, R_F values of which being 0.81, 1.72, 1.67 and 0.52, these excepting 0.72, correspond to tea tannin Itea tannin Itea catechin I tea catechin II, which have been formerly separated by the present author (see Plate 1).<br> The author has recently isolated tea tannin II, the R_E value of which is corresponding (see Plate II). The crystalline form of this tea tannin II is shown in Plate III, m. p. 248_??_9°, [α]¹⁸_D=-173°. Its aqueous solution has a hard astringent taste, when heated with dilute separates gallic acid and is converted into a reddish brown substance.<br> The absorption spectra of these four substances are shown in Plate III.<br> From above the newly isolated substance in recognizable as l-gallocatechin gallate.

収録刊行物

• 日本農芸化学会誌

  日本農芸化学会誌 29 (6), 407-412, 1955

  公益社団法人 日本農芸化学会

キーワード

• Medicine (miscellaneous)
• Chemistry (miscellaneous)
• Food Science
• Biotechnology

詳細情報

• CRID: 1390001204534654464
• NII論文ID: 130001215830
• DOI: 10.1271/nogeikagaku1924.29.407
• ISSN: 18836844
• ISSN: 00021407
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可