タンニン酸さん

noun

tannic acid; tannin

A type of polyphenol found in many plants, used in tanning leather, dyeing, and as a clarifying agent. In everyday contexts, often associated with the astringent taste in tea and wine.

• タンニン酸さんはお茶ちゃの渋しぶみの原げん因いんです。

  Tannic acid is the cause of the astringency in tea.

• タンニン酸さんは革かわをなめすのに使つかわれます。

  Tannic acid is used for tanning leather.