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

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Problems solved by technology

[0005]The present invention aims to

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

Examples

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Example Embodiment

[0035] Example 1

[0036] Choose 500g fresh carrots with plump rhizomes, orange color, smooth surface, consistent texture and size, wash with clean water, drain, cut into small pieces, and beat for use. Control the temperature of the drying room to -10°C, put the carrot pulp and the dried food-grade silica gel desiccant in the drying chamber, 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 when the temperature in the drying chamber reaches -25°C. Adjust the pressure in the drying chamber and reduce the pressure to 800Pa. During the drying process, the moisture content of carrot powder was measured. When the moisture content of carrot powder reached 20% after 17h, the pressure in the drying chamber was adjusted again, the pressure was reduced to 400Pa, and the drying was continued. After 22h, when the moisture content of carrot powder reached 8%, Stop drying and collect...

Example Embodiment

[0037] Example 2

[0038] Choose 500g fresh carrots with plump rhizomes, orange color, smooth surface, consistent texture and size, wash with clean water, drain, cut into small pieces, and beat for use. Control the temperature of the drying room to -13°C, place the carrot pulp and the dried food-grade silica gel desiccant in the drying chamber, 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 when the temperature in the drying chamber reaches -28°C. Adjust the pressure in the drying chamber and reduce the pressure to 850Pa. During the drying process, the moisture content of carrot powder was measured. After 16.5h, when the moisture content of carrot powder reached 20%, the pressure in the drying chamber was adjusted again, the pressure was reduced to 400Pa, and drying was continued. After 22h, the moisture content of carrot powder reached 8%. , stop drying, and collec...

Example Embodiment

[0039] Example 3

[0040] Choose 500g fresh carrots with plump rhizomes, orange color, smooth surface, consistent texture and size, wash with clean water, drain, cut into small pieces, and beat for use. Control the temperature of the drying chamber to -15°C, place the carrot pulp and the dried food-grade silica gel desiccant in the drying chamber, 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 when the temperature in the drying chamber reaches -30 °C. Adjust the pressure in the drying chamber and reduce the pressure to 900Pa. During the drying process, the moisture content of carrot powder was measured. After 15.5h, when the moisture content of carrot powder reached 20%, the pressure in the drying chamber was adjusted again, the pressure was reduced to 400Pa, and drying was continued. After 21h, the moisture content of carrot powder reached 8%. , stop drying, and co...

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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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