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Drying method of carrot powder

A technology of carrot powder and drying method, which is applied in food drying, food science and other directions to achieve the effect of improving drying efficiency

Inactive Publication Date: 2017-05-10
INNER MONGOLIA QITE JINSHENG BIOTECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems described above

Method used

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  • Drying method of carrot powder
  • Drying method of carrot powder

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Select 500g fresh carrots with full rhizomes, orange color, smooth surface, consistent texture and size, wash with water, drain, cut into small pieces, and beat for later use. Control the temperature of the drying room to drop to -10°C, put the carrot pulp and the dried food-grade silica gel desiccant in the drying room, and mix them evenly. The mass ratio of the silica gel desiccant to the carrot pulp is 1:2. Perform liquid nitrogen spraying to cool down, and stop spraying after the temperature in the drying chamber reaches -25°C. Adjust the pressure in the drying chamber to reduce the pressure to 800Pa. During the drying process, measure the water content of the carrot powder, and when the water content of the carrot powder reaches 20% through 17h, adjust the pressure in the drying chamber again, reduce the pressure to 400Pa, continue drying, and when the water content of the carrot powder reaches 8% through 22h, Stop drying and collect the finished carrot powder.

Embodiment 2

[0038] Select 500g fresh carrots with full rhizomes, orange color, smooth surface, consistent texture and size, wash with water, drain, cut into small pieces, and beat for later use. Control the temperature of the drying room to drop to -13°C, put the carrot pulp and the dried food-grade silica gel desiccant in the drying room, and mix them evenly. The mass ratio of the silica gel desiccant to the carrot pulp is 1:2.2. Perform liquid nitrogen spraying to cool down, and stop spraying after the temperature in the drying chamber reaches -28°C. Adjust the pressure in the drying chamber to reduce the pressure to 850Pa. During the drying process, measure the water content of the carrot powder. When the water content of the carrot powder reaches 20% after 16.5 hours, adjust the pressure in the drying chamber again, reduce the pressure to 400Pa, and continue drying. After 22 hours, the water content of the carrot powder reaches 8%. , stop drying, and collect the finished carrot powde...

Embodiment 3

[0040] Select 500g fresh carrots with full rhizomes, orange color, smooth surface, consistent texture and size, wash with water, drain, cut into small pieces, and beat for later use. Control the temperature of the drying room to drop to -15°C, place the carrot pulp and the dried food-grade silica gel desiccant in the drying room, and mix them evenly. The mass ratio of the silica gel desiccant to the carrot pulp is 1:2.5. Perform liquid nitrogen spraying to cool down, and stop spraying after the temperature in the drying chamber reaches -30°C. Adjust the pressure in the drying chamber to reduce the pressure to 900Pa. During the drying process, measure the water content of the carrot powder. After 15.5 hours, when the water content of the carrot powder reaches 20%, adjust the pressure in the drying chamber again, reduce the pressure to 400 Pa, and continue drying. After 21 hours, the water content of the carrot powder reaches 8%. , stop drying, and collect the finished carrot p...

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Abstract

The invention provides a drying method of carrot powder, comprising the steps of S1, producing carrot slurry; S2, controlling to decrease temperature of a drying chamber to first predetermined temperature; S3, mixing the carrot slurry and a drying agent, placing in the drying chamber, and controlling to decease the temperature of the drying chamber to second predetermined temperature; S4, controlling to decrease pressure of the drying chamber to first pressure, and drying for 15-18 h; then decreasing the pressure to second pressure, and drying for 20-23 h; S5, collecting the finished product. According to the drying method of the carrot powder, carrot is made into slurry liquid that is quickly refrigerated, and the carrot slurry is dried through eutectic point of water volatilization and strong adsorbing action of silica gel; water dissipation is quickened for the carrot slurry through double pressure decrease, and drying efficiency is improved. The whole process is carried out under freezing, and thermosensitive substances such as carotene and vitamins are protected from oxidative denaturing.

Description

technical field [0001] The invention relates to a method for drying materials, such as fruits and vegetables, in particular to a method for drying carrot powder. Background technique [0002] Carrot is a common nutritious fruit and vegetable. It is eaten with fleshy roots. It is one of the main vegetables in spring and winter. Because of its high nutritional value, it is called "little ginseng" in vegetables. The most important nutritional component of carrots is carotenoids, which include β-carotene, α-carotene, lutein and other carotene, among which β-carotene has the highest content, accounting for 80% of the total carotene content . Beta-carotene is an important natural functional ingredient and an important and safe source of vitamin A. Under the internal regulation of the human body, when VA is deficient, β-carotene can be automatically converted into VA under the action of vitamin enzymes, and the conversion will stop when VA increases to meet the required amount. ...

Claims

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Application Information

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IPC IPC(8): A23L19/00
CPCA23V2002/00A23V2300/10
Inventor 韩风雨王曼于秀玲齐平李洪泽
Owner INNER MONGOLIA QITE JINSHENG BIOTECH CO LTD
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