Plant source amine oxidase as well as extraction method and application thereof

The invention discloses plant source amine oxidase as well as an extraction method and application thereof. The extraction method comprises the following steps: culturing plant tissues and extracting amine oxidase from the plant tissues. The enzyme provided by the invention is a plant-derived enzyme, so that the safety is higher; when common biogenic amine in food is taken as a substrate, obvious enzyme activity can be detected. And moreover, the amine-reducing enzyme has relatively strong degradation capability on several common biogenic amines in food. The method can be used in various foods with relatively high biogenic amine content; the high-histamine fish products, such as high-histamine fishes, shrimp paste, fish sauce, red wine, fermented vegetables, beer, ham, salted fish and spicy fermented tea, and common foods with high amino acid and protein contents, such as cereal fermented products, bean fermented products, milk fermented products, meat fermented products, fruit and vegetable fermented product