Strawberry preservative containing functional amino acids

The invention provides a strawberry preservative containing functional amino acids. The strawberry preservative is characterized in that the strawberry preservative comprises 0.2-0.5g/L of gamma-aminobutyric acid, 0.3-0.5g/L of arginine, 5.0-10.0g/L of ascorbic acid, 7.5-10.0g/L of calcium chloride, 5.0-10.0g/L of acetic acid, 10.0g/L of chitosan, and the balance distilled water. The preparation method of the strawberry preservative comprises the following steps: dissolving ascorbic acid and acetic acid in distilled water, adding chitosan to the obtained solution, dissolving, uniformly mixing, and sequentially adding gamma-aminobutyric acid, arginine and calcium chloride. The strawberry preservative can substantially reduce the rotting rate of fruits and prolong the storage period and the shelf life of strawberries when the strawberry preservative is used for the preservation and fresh keeping treatment of the strawberries. Additionally, the ingredients of the preservative contain a proper amount of a food additive and are rich in the functional amino acids which comprise arginine and gamma-aminobutyric acid and have nutrition and healthcare effects on human bodies, so there is no toxicity residual, and the nutrition and healthcare effects of fruits and vegetables to the human bodies can be enhanced, thereby the preservative accords with the current preservative development direction and has a good exploitation application potential.