ニンヒドリン反はん応のうMeanings1nounninhydrin reactionA chemical test used to detect amino acids and proteins, producing a characteristic purple color. Primarily used in biochemistry and forensic science.ニンヒドリン反はん応のうはアミノ酸さんの検けん出しゅつに用もちいられる。The ninhydrin reaction is used to detect amino acids.