A vacuum freeze-drying method for chrysanthemum morifolium

Abstract

A vacuum freeze-drying method for chrysanthemum morifolium is provided. The method includes following specific operation steps: firstly selecting the chrysanthemum morifolium, with chrysanthemum morifolium little leaf apexes with high quality and good conditions being selected, refreshing the chrysanthemum morifolium little leaf apexes by atomizing at 5-10 DEG C for 10 h, freezing, and drying to remove more than 95-99% of water in the chrysanthemum morifolium, so that a dried product can be stored for a long term without deterioration. According to the method, water frozen in advance in materials is removed directly by ice state sublimation in a form as water vapor under high vacuum states and by utilization of a sublimation principle without the step of ice melting, thus achieving the objective of freeze-drying. The chrysanthemum morifolium prepared by the method can rapidly rehydrate and reinstate when being used as tea, and can be reinstated to a degree that fiber characteristics of the reinstated chrysanthemum morifolium can be same with that of a fresh product.

Description

technical field [0001] The invention relates to the field of chrysanthemum chrysanthemum, in particular to a vacuum freeze-drying method for chrysanthemum chrysanthemum. Background technique [0002] Hangbai chrysanthemum is a kind of chrysanthemum and the main material of chrysanthemum tea. Fresh chrysanthemums cannot be stored for a long time, so chrysanthemum tea is generally dried chrysanthemums. Today's chrysanthemum teas are dried and preserved by drying technology for later drinking. Today's drying process is: initial sorting - water steaming - microwave drying - sulfur fumigation - finished product sorting - flower packaging. Today's drying method requires high temperature to achieve, high temperature will damage the beneficial components inside the Chrysanthemum chrysanthemum, and reduce the efficacy of Chrysanthemum chrysanthemum by half. Chrysanthemum chrysanthemum needs to be steamed and dried by microwave before drying. Steaming and drying by microwave will da...

AI Technical Summary

Problems solved by technology

Today's drying method requires high temperature to achieve, high temperature will cause damage to the beneficial components inside the Chrysanthemum chrysanthemum, and halve the efficacy of Chrysanthemum chrysanthemum

Chrysanthemum chrysanthemum needs to be steamed and dried by microwave before drying. Steaming and drying by microwave will damage the color of chrysanthemum, resulting in poor color of chrysanthemum after treatment, which cannot be accepted by consumers, so the producer has increased the sulfur fumigation process. After this operation, the white chrysanthemum can be restored to its bright color, which is acceptable to consumers, but the sulfur fuming operation will leave sulfur in the chrysanthemum, drinking such a chrysanthemum will cause great harm to the human body