Preparation method and application of slow-release volatile solid preservative containing cinnamyl aldehyde

The invention discloses a preparation method and application of a slow-release volatile solid preservative containing cinnamyl aldehyde. The preparation method comprises the following steps: fully mixing span 80 and Tween 80 in proportion to obtain a mixed emulsifier; the method comprises the following steps: fully mixing cinnamyl aldehyde, a mixed emulsifier and water in proportion, and carrying out ultrasonic emulsification at 40-60 DEG C to prepare a cinnamyl aldehyde emulsion; and melting the gel material in water at 100 DEG C, uniformly mixing with cinnamyl aldehyde emulsion, subpackaging while hot, and cooling to room temperature to prepare the solid preservative. As a food preservative, the solid preservative can be applied to gas-phase sterilization in grain, fruit and vegetable storage. The solid preservative is a green and safe slow-release volatile preservative, cinnamyl aldehyde serves as an antibacterial component, volatilization and slow release of cinnamyl aldehyde are achieved through a net-sh