Processing technology of mulberry leaf superfine powder

Abstract

The invention discloses a processing technology of mulberry leaf superfine powder, which comprises the following specific processing steps: deactivating enzymes of small pieces of mulberry leaves, sending the mulberry leaves into a freezing room of -18 DEG C for quick freezing for 3-5 hours, after freezing, sending the mulberry leaves into a vacuum freezing bin, freeze-drying for 12-18 hours, controlling the freeze-drying temperature of the whole process to be below 50 DEG C and the moisture content of the mulberry leaves to be below 8%, and discharging; adding the freeze-dried mulberry leavesinto a common pulverizer for primary pulverization and superfine pulverization, and adding the mulberry leaf superfine powder into a powder sterilizer system for UHT sterilization; and screening thesterilized mulberry leaf superfine powder through an efficient screening device, and then packaging, boxing and labeling the mulberry leaf superfine powder. After the fresh mulberry leaves are subjected to fixation, vacuum freeze drying dehydration is performed, the whole dehydration process is in an anaerobic low-temperature process, the mulberry leaves are basically not discolored, the fragranceis not lost, the taste is kept fresh, and compared with existing hot air high-temperature drying dehydration, the product quality is greatly improved.

Description

technical field [0001] The invention belongs to the field of mulberry leaf processing and relates to a processing technology of mulberry leaf superfine powder. Background technique [0002] Mulberry leaves are the leaves of the mulberry tree. The nutritional value of mulberry leaves is very high. Since ancient times, it has the reputation of "Ginseng is hot and nourishing, and mulberry leaves are clear and nourishing". Mulberry leaves are rich in 17 kinds of amino acids, crude protein, and crude fat in the human body. It is a plant with the same origin of medicine and food confirmed by the Ministry of Health. Green new food source. [0003] At present, the preparation process of mulberry leaves is mainly to dehydrate and dry the fresh mulberry leaves, and then superfinely pulverize them into ultrafine powders, which are used as beverage brewing and food and beverage raw materials. The current processing technology is: fresh mulberry leaves → cleaning → slicing → High-temp...

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation process of mulberry leaves is mainly to dehydrate and dry the fresh mulberry leaves, and then superfinely pulverize them into ultrafine powders, which are used as beverage brewing and food and beverage raw materials. The current processing technology is: fresh mulberry leaves → cleaning → slicing → High-temperature hot air drying and dehydration→ultrafine grinding→sieving→packaging→irradiation sterilization→labeling→finished product, however, the current product processing technology has the following defects: fresh mulberry leaves are dehydrated by high-temperature drying and dehydration, which is difficult for the product The color and fragrance of the product are greatly damaged, the color will turn yellowish brown, the aroma will be lost, and the taste will lose its freshness; and the active ingredients will be seriously lost during high-temperature hot air drying; at the same time, radiation sterilization is used for sterilization, and the product has radiation residue after sterilization , the product has potential safety hazards, and some consumers do not accept irradiated food; moreover, some countries strictly restrict the import of irradiated food

For the above reasons, this has severely limited the market sales scale of mulberry leaves sterilized by irradiation.

[0004] In the process of processing, a screening device is used to screen the crushed mulberry leaves. The existing screening device usually uses motor vibration to achieve screening, and the screening efficiency is low, and the installation and removal of the screen frame is inconvenient.

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