Vacuum freezing puff-drying processing method of hawthorn

Abstract

The invention discloses a vacuum freezing puff-drying processing method of hawthorn, and belongs to dry-processing of hawthorn. The method comprises the following steps: (1) pre-treating raw material: carrying out picking, cleaning and kernel penetrating treatment on fresh hawthorn; soaking the treated hawthorn in a sugar solution with 40% of sugar content for 12h, then taking the hawthorn out for sprinkling, removing the sugar solution on the surface of the hawthorn, and draining off water; (3) spreading the dry hawthorn to form a single layer uniformly distributed on a material tray, putting the hawthorn into an instant freezer, quickly freezing the hawthorn at -40 DEG C for 4-6 hours to ensure that water in the hawthorn is completely frozen; and (4)carrying out vacuum freezing puff-drying with a vacuum freezing puff-dryer. The processing method can maintain the original biological activity and nutritious components of hawthorn food to the maximum extent and improve the mouthfeel, and has the characteristics of good crispness, intact outer appearance, good mouthfeel, prolonged shelf life, no need of any additive and antiseptic, relatively low drying energy consumption, improved production efficiency, and the like.

Description

technical field [0001] The invention relates to a hawthorn drying method, in particular to a hawthorn vacuum freeze puffing drying processing method. Background technique [0002] Hawthorn has important medicinal value. Since ancient times, it has become a good medicine for invigorating the spleen and appetizing, eliminating stagnation, promoting blood circulation and reducing phlegm. Hawthorn contains carbohydrates, protein, fat, vitamin C, carotene, starch, malic acid, citric acid, calcium and iron and other substances. In addition, hawthorn contains organic acids such as chlorogenic acid, caffeic acid and tannins, tannins, epicatechin, choline, acetylcholine, and β-sitosterol. Hawthorn can prevent and treat cardiovascular diseases. It has the effects of dilating blood vessels, strengthening the heart, increasing coronary blood flow, improving heart vitality, stimulating the central nervous system, lowering blood pressure and cholesterol, softening blood vessels, diuresis...

AI Technical Summary

Problems solved by technology

[0004] Nowadays, when drying hawthorn, it is usually vacuum freeze-dried, and the final product hawthorn that has only been vacuum freeze-dried will have appearance wrinkles, structural collapse, and high product hardness, which seriously affects the sensory evaluation of the product, and the taste is poor. Hawthorn has a short shelf life and high energy consumption for drying

Currently, there is no good solution

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