This invention discloses a kumquat
preservative and its preparation method, belonging to the technical field of fruit preservatives. The kumquat
preservative comprises the following raw materials:
oxalis extract, soluble
starch, and an appropriate amount of water; the total phenolic content of the
preservative is 250-310 mg / g, and the total
flavonoid content is 10-30 mg / g. The
mass concentration of the
oxalis extract prepared with water is 0.05-0.1 g / mL; the
mass concentration of the soluble
starch prepared with water is 0.06-0.2 g / mL. The preparation method of the preservative includes: S1, weighing the
oxalis extract to prepare an oxalis extract solution; S2, weighing the soluble
starch to prepare a
starch solution; S3, mixing the oxalis extract solution and
starch solution at a volume ratio of 1:1-1.3 and stirring for 40-50 min; S4, allowing it to stand for another 5-10 min to obtain the preservative. The preservative in this application is a compound of natural
sage extract and food-grade soluble starch, with no
chemical residue, safe and biodegradable, solving the safety hazards of traditional
chemical preservatives; kumquats soaked in the preservative still have a good preservation effect after 15 days, extending their
shelf life.