Aloe condensed juice confecting method for freeze-drying

Abstract

The invention provides a method for preparing aloe inspissated juice for cryodesiccation, which comprises the steps that: 0.01-0.1 percent of phytic acid and 0.02-0.2 percent of mannite are added to aloe inspissated juice, and the obtained material is freeze dried. By adding mannite, the aloe inspissated juice, during the quick-freezing process, can quickly form regular crystal when becoming solid state, thus preventing the material from bubbling on the surface when dried, quickening the freezing out process, reducing the weight of the material that is not frozen out and raising the yield of the frozen out products. Adding phytic acid can prevent browning of the aloe in late stage of drying and ensures sensory quality of the aloe powder products. The method for preparing alow inspissated juice of the invention has the advantages of low production cost and simple operation, and can be directly used for preparing freeze-dried aloe powder products into batch production.

Description

technical field [0001] The invention relates to a processing and preparation method in the field of aloe deep processing, which is to adjust the ratio of aloe concentrated juice, accelerate the formation of regular solid crystals in the quick-freezing process of the aloe concentrated juice, and prevent the phenomenon of aloe foaming and aloe powder discoloration in the freeze-drying process . Background technique [0002] Aloe Vera is a perennial herbaceous plant of Liliaceae. It contains a lot of nutrients and functional ingredients such as sugars, protein amino acids, organic acids, anthraquinone compounds, vitamins, and minerals. It has medical, health care, beauty, and ornamental functions. Aloe gel freeze-dried powder is an important raw material in medicine, chemical industry and food. The hot air drying method and spray drying method must increase the drying temperature or prolong the drying time to process aloe vera, which will cause great damage to the nutritional ...

AI Technical Summary

Problems solved by technology

However, in the quick-freezing process, since the main components of aloe are mixtures of sugars, amino acids, and organic acids, the eutectic point is not a temperature point, but a temperature range. It is difficult for the concentrated aloe juice to become solid quickly and form a regular shape. Therefore, it is necessary to extend the quick freezing time; and the surface of the aloe material is prone to foaming during drying, causing some materials to not be completely freeze-dried

At the same time, in the later stage of drying, as the temperature rises, the surface of the aloe material is prone to browning, causing the color of the aloe powder to turn yellow and darken.