noun, noun or participle which takes 'suru'
browning; brown discoloration
Technical term for the process or result of turning brown, used especially in food science, biology, and materials science.
リンゴの切り口が空気に触れて褐変した。
The cut surface of the apple turned brown upon exposure to air.
食品の褐変を防ぐ
Antioxidants are used to prevent browning of food.