This invention relates to the field of
food preservation technology and discloses a liquid
preservative for preserving fresh walnut kernels. The
preservative comprises a natural
preservative, a solubilizing and stabilizing agent, and a
solvent. This liquid preservative uses natural
phloretin as the preservative component, combined with Tween 80 as a solubilizing and stabilizing agent and
ethanol as a
solvent. This effectively solves the problems of poor water and oil
solubility and inadequate stability of
phloretin, allowing it to be stably dispersed in the preservative
system and fully exert its
antioxidant and
antimicrobial effects. Furthermore, the preparation method is simple and easy to implement, and the production process is safe and controllable. It is convenient to use; the preservation of fresh walnut kernels can be achieved through
dilution and soaking. The diluted solution can be reused, reducing usage costs. Simultaneously, it can inhibit
bacterial growth during the storage of fresh walnut kernels,
delay oxidative deterioration, maintain their good appearance and quality, extend
shelf life, and meet the market demand for high-quality fresh walnut kernels.