Drying method capable of keeping bright-colored color, bloom form and inherent flavor of camellia chrysantha

Abstract

The invention discloses a drying method capable of keeping bright-colored color, bloom form and inherent flavor of camellia chrysantha. The method comprises the steps of pre-freezing the picked fresh camellia chrysantha at the temperature of -18DEG C to enable the fresh camellia chrysantha to be iced and hardened; and putting into a low-temperature vacuum refrigerating machine, and drying for 8-12h under the condition that the vacuum degree is 80+ / -20Pa and the temperature is 45-70DEG C. The drying method has the advantages that the appearance of the fresh camellia chrysantha can be fixed after the camellia chrysantha is pre-frozen; the cells of the fresh camellia chrysantha can be broken, so that the drying speed can be accelerated, and the drying time can be reduced; the activity of the fresh camellia chrysantha can be broken, so that the browning of the color in the process of heating can be avoided; and a certain vacuum degree can be kept by means of low-temperature vacuum freeze drying, so that the participation of oxygen can be completely eradicated, the oxidation reaction can be avoided, and the color of the fresh camellia chrysantha can be protected; and the evaporation temperature of moisture in the fresh camellia chrysantha can be reduced, and the evaporation speed of the moisture can be accelerated. A certain temperature in the machine can be kept, the drying speed can be accelerated, and the drying time can be reduced.

Description

technical field [0001] The invention relates to the drying of camellia camellia flowers, in particular to a drying method capable of maintaining the bright color, blooming shape and inherent floral fragrance of camellia camellia. Background technique [0002] Camellia Camellia is a precious camellia plant unique to my country, known as the "Queen of the Tea Clan". The flowers of Camellia Camellia are not only very ornamental, but also have high health care and medicinal effects. The flowers of Camellia japonica contain more than 80% water, which is not resistant to storage and transportation. The flowers must be dried to reduce the water content to less than 10%, so that they can be stored for a long time and transported easily. [0003] The current techniques for drying Camellia japonica flowers are as follows: [0004] 1. Microwave drying: It is the most commonly used method at present. This method uses a microwave dryer to dry quickly. This method has a fast dryi...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a kind of drying method that can keep the bright color and luster, blooming shape and inherent floral fragrance of camellia camellia. Problems such as shrinkage and color browning occur, and the merchandiseability of products is improved