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Freeze-dried American ginseng slice and preparation method thereof

The technology of American ginseng slices and American ginseng is applied in the field of freeze-dried slices of American ginseng and its preparation, which can solve the problems of discoloration and taste, loss of nutrients and the like, and achieve the effects of preventing oxidation and high speed.

Active Publication Date: 2016-02-03
李宏 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome defects such as the loss of nutritional components, discoloration and taste change caused by the existing American ginseng processing method, and to provide a preparation method of American ginseng freeze-dried slices

Method used

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  • Freeze-dried American ginseng slice and preparation method thereof
  • Freeze-dried American ginseng slice and preparation method thereof
  • Freeze-dried American ginseng slice and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Prepare American ginseng freeze-dried slices according to the following steps:

[0031] (1) Take fresh American ginseng, remove the beard from the reed head, soak in tap water for 15 minutes, remove the soil, rinse with drinking water for 2.5 minutes, and dry naturally until there is no water dripping; take the first-grade product with a diameter greater than 20 mm, use Cut American ginseng slices with a thickness of 3-5mm with a stainless steel knife;

[0032] (2) freezing the American ginseng slices at -40°C for 2 hours to obtain frozen American ginseng slices;

[0033] (3) evacuate until the vacuum reaches 15Pa, heat until the temperature reaches -25°C, feed nitrogen, the pressure of the nitrogen feed is controlled at 40Pa, and vacuum-dry the frozen American ginseng slices;

[0034] (4) After vacuum-drying for 5 hours under the conditions described in step (3), the temperature was raised to 30° C. at a rate gradient of 3° C. / min, the nitrogen flow was stopped, and t...

Embodiment 2

[0041] Prepare American ginseng freeze-dried slices according to the following steps:

[0042] (1) Take fresh American ginseng, remove the beard from the reed head, soak in tap water for 10 minutes, remove the soil, rinse with drinking water for 2 minutes, and dry naturally until there is no water dripping; take the third-grade product with a diameter of less than 10 mm, use Cut American ginseng slices with a thickness of 3-5mm with a stainless steel knife;

[0043] (2) freezing the American ginseng slices at -45°C for 0.5h to obtain frozen American ginseng slices;

[0044] (3) evacuate until the vacuum reaches 5 Pa, heat until the temperature reaches -30°C, feed nitrogen, the pressure of the nitrogen feed is controlled at 15 Pa, and vacuum-dry the frozen American ginseng slices;

[0045] (4) After vacuum-drying for 4 hours under the conditions described in step (3), the temperature was raised to 35° C. at a rate gradient of 4° C. / min, the nitrogen flow was stopped, and the h...

Embodiment 3

[0054] Prepare American ginseng freeze-dried slices according to the following steps:

[0055] (1) Take fresh American ginseng, remove the beard from the reed head, soak in tap water for 20 minutes, remove the soil, rinse with drinking water for 3 minutes, and dry naturally until there is no water dripping; take the secondary product with a diameter of 10-20 mm, Cut American ginseng slices with a thickness of 3-5mm with a stainless steel knife;

[0056] (2) freezing the American ginseng slices at -50°C for 1 hour to obtain frozen American ginseng slices;

[0057] (3) evacuate until the vacuum reaches 10Pa, heat until the temperature reaches -30°C, feed nitrogen, the pressure of the nitrogen feed is controlled at 30Pa, and vacuum-dry the frozen American ginseng slices;

[0058] (4) After vacuum-drying for 2 hours under the conditions described in step (3), the temperature was raised to 40° C. at a rate gradient of 5° C. / min, the nitrogen flow was stopped, and the heat preserva...

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Abstract

The present invention relates to a freeze-dried American ginseng slice preparation method which comprises the following steps: (1) fresh American ginsengs are taken and cleaned, the cleaned American ginsengs are air-dried, and the air-dried American ginsengs are cut into American ginsengs slices; (2) the American ginsengs slices are subjected to freeze treatment under the condition of -50 to -40 DEG C for 0.5-2.0 to obtain the frozen American ginseng slices; (3) the frozen slices are subjected to vacuum drying at a vacuum degree of 5-15 pa and a temperature of -30 to -25 DEG C with the addition of nitrogen; and (4) after the frozen slices are vacuum dried for 3-5 h, the temperature is heated up to 30 to 40 DEG C, the nitrogen is stopped being added, heat preservation is conducted for 0.5-1 h, and the freeze-dried American ginseng slices are obtained. According to the shape of the fresh American ginsengs, the freeze-dried American ginseng slices are put and packaged, which can further improve the appearance and performance of the product. The method and technology is simple and convenient, high in efficiency, prevents the oxidation of the active components of the American ginsengs, and completely retains the color and luster, taste and nutrient composition of the fresh American ginsengs. The prepared freeze-dried American ginseng slices have better nutrient component preservation, and are green and healthy, convenient for consumption, good in stability, and long in shelf life.

Description

technical field [0001] The invention relates to the technical field of natural health food production, in particular to a freeze-dried American ginseng tablet and a preparation method thereof. Background technique [0002] American ginseng is a plant of Araliaceae, bitter in taste, cool in nature, enters the heart, lung, and kidney meridians, and its main function is tonic, nourishing yin and reducing fire, nourishing qi and promoting body fluid, etc. For qi deficiency and yin deficiency, internal heat, cough and asthma with phlegm and blood, asthenia heat, dysphoria, thirst, dry mouth and throat. The saponins in American ginseng can effectively strengthen the central nervous system, achieve the effects of calming the mind, eliminating fatigue, and enhancing memory. It can be applied to symptoms such as insomnia, irritability, memory loss, and senile dementia. American ginseng, as the first choice of medicine for invigorating qi and health care, can promote serum protein sy...

Claims

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Application Information

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IPC IPC(8): A23L33/00A23L3/44A23L3/42
CPCA23L3/42A23L3/44A23V2002/00A23V2300/10
Inventor 陈雪娇陈应林朱东李宏岳昌林范玲玲陈静芳
Owner 李宏