Processing method of freeze-dried fresh fructus lycii

Abstract

The invention discloses a processing method of freeze-dried fresh fructus lycii. The freeze-dried fresh fructus lycii is obtained by enabling fresh fructus lycii to be at a frozen state in a freeze-drying process all the time through a freeze-drying technology so as to realize sublimation and dehydration purposes under the conditions that any additive is not added, the fructus lycii does not need to be dewaxed and an initial state of the fresh fructus lycii is kept, and packaging without the need of nitrogen gas. The method disclosed by the invention comprises the following steps: treating raw materials, washing and draining, quickly freezing, freezing in vacuum and drying, and packaging a finished product. The processing method disclosed by the invention has the beneficial effects that (1) an initial natural state of the fresh fructus lycii is kept, and nutrient components and active substances are kept completely; color and luster, apparent shapes and re-watered appearance and taste keeping basically consistent with those of fresh fruits; (2) long-time storage of the fresh fructus lycii is realized and the shelf life is prolonged; the sublimation and freeze-drying time of moisture is relatively short, the production cost is reduced and the energy consumption is greatly reduced; (3) any additive is not added so that the freeze-dried fresh fructus lycii is safe and reliable to eat and the product has long-time stability in marketing sale.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of freeze-drying of fresh fruit, in particular to a processing method of freeze-drying fresh wolfberry fruit. [0003] Background technique: [0004] Lycium barbarum is a precious medicinal material and tonic with the same origin as medicine and food. Traditional Chinese medicine believes that wolfberry is flat in nature, sweet in taste, slightly bitter, and non-toxic. It has the effects of nourishing the liver and lungs, improving eyesight, strengthening muscles and bones. The content of vitamin C in wolfberry is higher than that of orange, the content of β-carotene is higher than that of carrot, and the content of iron is higher than that of steak. Modern medical research shows that it contains carotene, betaine, vitamin A, vitamin B1, vitamin B2, vitamin C, calcium, phosphorus, iron, etc. It has the pharmacological effects of increasing the activity of white blood cells and promoting the regenerat...

AI Technical Summary

Problems solved by technology

However, the fresh fruit of Lycium barbarum has a high sugar content, and there are waxy raw materials on the surface. The sublimation of water is very slow, the freeze-drying time is long, and the production cost is high. In addition, most of the freeze-dried fresh fruit of Lycium barbarum in the prior art has additives and additives in the preparation process. Additives need to be carried out in a dewaxed state. Therefore, the natural state of fresh wolfberry fruit cannot be guaranteed, and the original active substances and nutritional components of fresh wolfberry fruit will also be affected to a certain extent, thereby directly affecting the market sales of this product.