Honeysuckle vacuum freeze drying process

Abstract

The invention relates to the technical field of honeysuckle processing, in particular to a honeysuckle vacuum freeze-drying process which comprises the steps of: pretreatment, placement of raw materials on plates, pre-freezing and vacuum drying. According to the method, an advanced quick-freezing method is utilized, so that the vacuum freeze-drying time is shortened, the energy consumption is reduced, and substances are prevented from being continuously oxidized and decomposed under the action of enzymes in the drying process. The process for processing honeysuckle by vacuum freeze drying is researched for the first time, wherein the process parameters are optimized, so that the heat of supplied materials is minimum, the sublimated water is fastest, the drying time is shortest, the energyconsumed for removing unit mass of water is minimum, and the quality of dried products is best. Components such as organic acids, flavonoids, volatile oils, saponins and the like in the honeysuckle obtained by the method are higher than those of honeysuckle obtained by other methods, the content of chlorogenic acid is 3.19%, and the vacuum freeze drying technology has obvious advantages in the aspect of protecting poor heat sensitivity and volatile components.

Description

technical field [0001] The invention relates to the technical field of honeysuckle processing, in particular to a honeysuckle vacuum freeze-drying process. Background technique [0002] Drying can ensure that materials will not be corrupted and deteriorated, and is the most common technology in current social production. Vacuum freeze-drying refers to the method of pre-freezing the water-containing substance into a solid state, and then sublimating the water in it from a solid state to a gaseous state under a vacuum state to remove moisture and preserve the substance. This technology has incomparable advantages under conventional drying. The solid matter after freeze-drying has a porous structure and maintains the volume when it is frozen. It can be easily dissolved and restored by adding water, and can remove 95% to 99% of water. In recent years, the development of vacuum freeze-drying technology has been very rapid, especially in China, especially in the fields of food pr...

AI Technical Summary

Problems solved by technology

Theoretically, the vacuum freeze-drying method has a protective effect on the easily oxidized and decomposed components in the medicinal material, and is most suitable for the initial processing of the medicinal material. However, the current domestic research results have not reflected the content analysis of the active ingredients and nutritional components of the freeze-dried samples of honeysuckle. On the one hand, the advantages of freeze-drying are due to the rapid loss of local water in plant tissue cells during the freeze-drying process, forming cell cavities, and the air in the cavities is not discharged. The enzyme is not able to continue to oxidize the active ingredients in it, resulting in the decomposition of the active ingredients in the plant tissue. The most important reason is related to the specific process requirements of freeze-drying. At present, no one has systematically carried out the research on the vacuum freeze-drying process of honeysuckle.

In addition, the price of the vacuum freeze dryer itself is high, the production investment is large, the drying time is long, and the energy consumption is large, which has caused many researchers to give up the research on the vacuum freeze-drying of honeysuckle.

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