Method for producing zinc extract with high zinc content, method for producing food, and method for producing vegetable green-retaining and restoring agent
A method for producing a high-zinc-content yeast extract, including extracting the high-zinc-content yeast extract by suspending zinc-containing yeast into a solution containing a carboxylic acid, a carboxylic acid salt, or both thereof to thereby obtain a suspension liquid, and separating a solid component and a liquid component of the suspension liquid； the high-zinc-content yeast extract； food； and an agent for maintaining and restoring a green color of vegetables.
