Method for producing zinc-rich yeast extract, zinc-rich yeast extract, and green-retaining/-restoring agent for food and vegetables

摘要

A method for producing a zinc-rich yeast extract, the method comprising an extraction step for suspending a yeast containing zinc in a solution including carboxylic acid and/or carboxylic acid salt, and separating the solid component and liquid component of the resulting suspension; a zinc-rich yeast extract; and a green-retaining/-restoring agent for food and vegetables.