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Quick-freezing and preserving method of daylily

A fresh-keeping method and day lily technology are applied in the directions of fruit and vegetable fresh-keeping, food preservation, food freezing, etc., to achieve the effects of reducing the loss of nutritional quality, reducing the risk of adding food additives and toxic and harmful substances, and having a long shelf life.

Inactive Publication Date: 2019-01-11
湖南吉祥食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Day lily is a kind of flower bud plant. It is different from other leaf and stem vegetables that are frozen and stored fresh. Other leaf and stem vegetables are directly blanched with steam or boiling water, but day lily can only be blanched with steam and boiling water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Improve and improve on the basis of Comparative Example 3. Method: After analysis, the reason is found. Because the distance between the steam box cover and the material on the conveyor belt is not enough, the heat of the steam boiling water can not rise, resulting in uneven temperature distribution in the steam box, so fresh yellow flowers The degree of killing enzymes in vegetables is inconsistent; the height of the steam box cover is increased by 10cm on the original basis, and the length is 380cm; the specifications of the steam box after correction are: length 1160cm, width 145cm, height 68cm, and divide the steam box into two sections before and after. . The front section is ⅓ of the total length of the steam box, and the rear section is ⅔ of the total length. The steam supply temperature of the front and rear sections is different. The front section is 95℃-98℃, the rear section is 90℃-93℃, and the rear section is set compared to the previous section. When the temp...

Embodiment 2

[0040] Cooling by a combination of water cooling and air cooling;

[0041] Method: The day lily after the enzyme killing in Example 1 was firstly cooled and dehydrated; then air-cooled and dehydrated. Two cooling methods and two dehydration were used to ensure that the day lily did not loose buds during the cooling process, and the enzymes were removed from the box. Immediately enter the water shower cooling treatment. The size of the water shower cooling space is: length 495cm, width 100cm, height 120cm, 3 drain pipes are installed on it, the height of the water pipe is 80cm from the daylily, and the water from the water pipe sprays into a mist to avoid the daylily Pine bracts, water drench cooling time 45s. After the water shower is cooled, it enters the vibration water filter for dehydration. The specifications are: length 190cm*width 105cm*height 115cm, the vibration dehydration frequency is controlled 80 times / min, and the air cooling process enters after 30s of vibration de...

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Abstract

The present invention discloses a quick-freezing and preserving method of daylily. The quick-freezing and preserving method of the daylily comprises four steps of enzyme deactivating, cooling, quick-freezing and packaging. During the enzyme deactivating process, a steam box is heightened to solve a problem of non-uniform curing of the enzyme-deactivating of the daylily and improves enzyme-deactivating efficiency; during the cooling, processes of water cooling, dehydrating, wind cooling and dehydrating are conducted; the water cooling and wind cooling are combined; so that before the daylily enters a quick-freezing device, the daylily reaches a requirement of cooling and dehydrating after the enzyme-deactivating of the daylily; and at the same time, a problem of flower bud loosening and blooming during the cooling process after the enzyme-deactivating of the daylily is solved.

Description

Technical field [0001] The invention belongs to the technical field of vegetable processing, and specifically relates to a quick-freezing and fresh-keeping method of daylily. Background technique [0002] The processing of day lily into dried vegetables has been used for hundreds of years. In today's situation where the fresh-keeping and quick-frozen vegetable supply market is very popular, how to add daylily to the quick-frozen fresh-keeping supply market is a revolution. Daylily is a flower bud plant, which is different from other leaf and stem vegetables for quick-frozen storage and preservation. Other leaf and stem vegetables are directly blanched with steam or blanched in boiling water, but daylily can only be blanched with steam in boiling water. When blanching with steam boiling water, how to handle the enzyme treatment and cooling treatment is crucial to overcome difficulties. [0003] In the process of killing the enzyme in day lily, it is different from that of other le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/005A23B7/04
CPCA23B7/0053A23B7/0408A23B7/0425A23V2002/00A23V2300/24A23V2300/20
Inventor 谢富生毕金峰易建勇谢群亚谢群周
Owner 湖南吉祥食品有限公司
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