乳にゅう酸さん

noun

lactic acid

A chemical term for the organic acid produced in muscles during exercise and found in sour milk products.

• 激はげしい運うん動どうの後あと、筋きん肉にくに乳にゅう酸さんがたまる。

  After intense exercise, lactic acid builds up in the muscles.

• 乳にゅう酸さんはヨーグルトの酸さん味みの原げん因いんです。

  Lactic acid is responsible for the sour taste of yogurt.