Ginseng product with high rare saponin content and preparation method thereof

Abstract

The invention provides a ginseng product with high rare saponin content and a preparation method thereof. According to the method, the cooked ginseng is subjected to dipping treatment in a dipping solution composed of hyaluronic acid and lactic acid. Through optimization, screening, compounding of hyaluronic acid and lactic acid, and immersion treatment of the cooked ginseng, ginsenoside in the cooked ginseng can be converted into rare ginsenoside, and through further cooperation with steaming treatment, the content of the rare ginsenoside in the obtained ginseng product can be significantly increased. Tests show that the content of rare ginsenoside in the ginseng product obtained by the preparation method is high, and the rare ginsenoside is uniformly distributed.

Description

Technical Field

[0001] The invention belongs to the technical field of food processing, and particularly relates to a ginseng product with high rare saponin content and a preparation method thereof. Background Art

[0002] Ginseng has the effects of calming the mind, improving intelligence, replenishing qi and blood, and improving immunity. Since ginseng was approved as a new resource food in 2012, foods processed with ginseng as raw materials have emerged in an endless stream. Ginseng contains ginsenosides, alcohol, sugars and other ingredients, which have the effects of nourishing the five internal organs and calming the nerves.

[0003] The prior art usually steams ginseng to increase the content of rare saponins such as Rg3, Rg5, and Rk1, which have excellent anti-cancer and anti-dementia effects. However, the content of rare saponins in steamed ginseng is still low. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a ginseng product with high rare saponin content and a preparation method thereof. The ginseng product obtained according to the preparation method of the present invention has a high rare saponin content and is more evenly distributed.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a method for preparing a ginseng product having a high rare saponin content, comprising the following steps:

[0007] The ripe ginseng is immersed in an immersion liquid consisting of hyaluronic acid and lactic acid to obtain a ginseng product.

[0008] Preferably, the mass ratio of hyaluronic acid to lactic acid is (1-3):(3-5).

[0009] More preferably, the mass ratio of hyaluronic acid to lactic acid is (1.5-2.5):(3.5-4).

[0010] Preferably, the mass concentration of the impregnation solution is 10-20 wt%

[0011] Preferably, the material-liquid ratio of the impregnation treatment is 1 g:(20~50) mL.

[0012] Preferably, the immersion treatment is performed under ultrasonic conditions.

[0013] Preferably, the temperature of the ultrasound is 35-55° C., the frequency is 10-15 KHz, and the time is 10-50 min.

[0014] Preferably, the cooked ginseng is obtained by subjecting fresh ginseng to plasma treatment and then steaming it.

[0015] Preferably, the plasma treatment time is 10 to 30 s.

[0016] Preferably, the steaming temperature is 85-95° C. and the steaming time is 1-3 h.

[0017] Preferably, the fresh ginseng has been pre-treated by washing and removing branch roots.

[0018] In a second aspect, the present invention provides a ginseng product prepared by the above preparation method.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a method for preparing a ginseng product with a high content of rare saponins, which comprises immersing cooked ginseng in an immersion solution composed of hyaluronic acid and lactic acid. The present invention is optimized and screened, and uses a compound of hyaluronic acid and lactic acid to immerse cooked ginseng, which can be beneficial for converting ginsenosides in cooked ginseng into rare ginsenosides. Further combined with plasma treatment and steaming treatment, the content of rare ginsenosides in the obtained ginseng product can be significantly increased.

[0021] The test showed that the contents of ginsenosides (such as Rk1, Rg5, Rg3, Rb1, Rc, Rb2, Rb3, and Rd) in the outer skin and core of the ginseng products prepared by the above method were not much different and were evenly distributed. In addition, the contents of Rk1, Rg5, and Rg3, which are rare ginsenosides, were significantly increased. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides a method for preparing a ginseng product with a high rare saponin content, comprising the following steps:

[0024] The ripe ginseng is immersed in an immersion liquid consisting of hyaluronic acid and lactic acid to obtain a ginseng product.

[0025] In the present invention, the cooked ginseng is generally obtained by pre-treating fresh ginseng, and then sequentially performing plasma treatment and steaming treatment.

[0026] The pretreatment includes washing and obtaining the taproot of fresh ginseng.

[0027] Specifically, in some embodiments of the present invention, the pretreatment is: clean the fresh ginseng with a ginseng washing machine, drain and obtain clean fresh ginseng; remove the branch roots, whiskers and rhizome of the clean fresh ginseng to obtain the main root.

[0028] In the present invention, the plasma treatment and steaming treatment are combined to treat fresh ginseng, which is beneficial to the conversion of ginsenosides in fresh ginseng into rare ginsenosides. If steaming treatment is directly performed without plasma treatment, the content of rare ginsenosides in the final ginseng product will be easily affected.

[0029] In the present invention, the plasma treatment can be performed by methods well known to those skilled in the art. In the present invention, the plasma treatment time is preferably 10 to 30 s, more preferably 15 to 20 s.

[0030] In the present invention, the temperature of the steaming treatment is 85-95°C, preferably 88-90°C, and the time is 1-3 hours, preferably 1.5-2.5 hours. The steaming treatment is preferably carried out in an electrically heated steam cabinet.

[0031] According to the present invention, after the cooked ginseng is obtained, the cooked ginseng is immersed in an immersion solution composed of hyaluronic acid and lactic acid, wherein the hyaluronic acid is a low molecular weight hyaluronic acid with a molecular weight of 10,000 to 100,000, preferably 10,000 to 40,000.

[0032] In the present invention, hyaluronic acid and lactic acid are used in combination to synergistically improve the conversion of ginsenosides in ginseng into rare ginsenosides. If any one component is missing or replaced, the content of rare ginsenosides in the final ginseng product will be affected.

[0033] Furthermore, the present invention has experimentally found that when the mass ratio of hyaluronic acid to lactic acid is within a certain ratio range, the effect of converting ginsenosides to rare ginsenosides is better. Therefore, the present invention preferably has a mass ratio of hyaluronic acid to lactic acid of (1-3):(3-5), more preferably (1.5-2.5):(3.5-4).

[0034] In the present invention, the mass concentration of the impregnation liquid composed of hyaluronic acid and lactic acid is 10-20 wt %, preferably 12-15 wt %. The material-liquid ratio of the impregnation treatment is 1 g: (20-50) mL, preferably 1 g: (25-40) mL.

[0035] In some preferred embodiments of the present invention, the immersion treatment is carried out under ultrasonic conditions, the temperature of the ultrasound is 35-55°C, preferably 40-50°C; the frequency is 10-15 KHz, preferably 12-15 KHz; the time is 10-50 min, preferably 20-40 min. In the present invention, the use of ultrasonic conditions to assist the immersion treatment can further improve the degree of conversion of ginsenosides to rare ginsenosides.

[0036] In the present invention, after the immersion treatment, the obtained ginseng product is preferably dried. The drying treatment is preferably carried out in a hot air circulation oven.

[0037] Then, according to the present invention, the dried ginseng is preferably packaged into 1 piece / bag to obtain a finished product, which can be sold commercially.

[0038] The present invention also provides a ginseng product obtained by the above preparation method. According to the test, the content of ginsenosides (such as Rk1, Rg5, Rg3, Rb1, Rc, Rb2, Rb3, and Rd) in the outer skin and the core of the ginseng product is not much different and is evenly distributed. In addition, the content of Rk1, Rg5, and Rg3, which are rare ginsenosides, is significantly increased.

[0039] It can be seen that the ginseng product obtained by the preparation method provided by the present invention has a high content of rare ginsenosides and is evenly distributed. In addition, the preparation method is simple, convenient, easy to implement, and is conducive to large-scale production.

[0040] In order to further illustrate the present invention, the following examples are provided for detailed description. The experimental raw materials used in the following examples of the present invention are all common commercially available products.

[0041] Example 1

[0042] Preparation steps of fresh ginseng: clean the fresh ginseng with a ginseng washing machine, drain and obtain clean fresh ginseng; remove the branch roots, whiskers and rhizome of the clean fresh ginseng to obtain the main root;

[0043] Fresh ginseng steaming steps: fresh ginseng is subjected to plasma treatment at room temperature for 10 s, and then placed in an electric heating steam cabinet at a temperature of 85°C for 2 h to obtain cooked ginseng;

[0044] Immersion treatment: The cooked ginseng was ultrasonically immersed in an immersion solution consisting of hyaluronic acid (molecular weight 10,000-100,000) and lactic acid; the concentration of the immersion solution was 10wt%; the mass ratio of hyaluronic acid to lactic acid was 1:4, and the solid-liquid ratio was 1 g:25 mL; the ultrasonic temperature was 55°C, the frequency was 13 KHz, and the time was 30 min;

[0045] Drying step: evenly spread the cooked ginseng in a cooking basket and dry it in a hot air circulation oven;

[0046] Packaging steps: pack the dried ginseng into 1 piece / bag to obtain the finished product.

[0047] Example 2

[0048] Preparation steps of fresh ginseng: clean the fresh ginseng with a ginseng washing machine, drain and obtain clean fresh ginseng; remove the branch roots, whiskers and rhizome of the clean fresh ginseng to obtain the main root;

[0049] Fresh ginseng steaming steps: fresh ginseng is subjected to plasma treatment at room temperature for 20 seconds, and then placed in an electric heating steam cabinet at a temperature of 85°C for 2 hours to obtain cooked ginseng;

[0050] Immersion treatment: The cooked ginseng was ultrasonically immersed in an immersion solution consisting of hyaluronic acid (molecular weight 10,000-100,000) and lactic acid; the concentration of the immersion solution was 15 wt %; the mass ratio of hyaluronic acid to lactic acid was 2:3, and the solid-liquid ratio was 1 g:35 mL; the ultrasonic temperature was 45°C, the frequency was 15 KHz, and the time was 20 min;

[0051] Drying step: evenly spread the cooked ginseng in a cooking basket and dry it in a hot air circulation oven;

[0052] Packaging steps: pack the dried ginseng into 1 piece / bag to obtain the finished product.

[0053] Example 3

[0054] Preparation steps of fresh ginseng: clean the fresh ginseng with a ginseng washing machine, drain and obtain clean fresh ginseng; remove the branch roots, whiskers and rhizome of the clean fresh ginseng to obtain the main root;

[0055] Fresh ginseng steaming steps: fresh ginseng is subjected to plasma treatment at room temperature for 30 seconds, and then placed in an electric heating steam cabinet at a temperature of 85°C for 2 hours to obtain cooked ginseng;

[0056] Immersion treatment: The cooked ginseng was ultrasonically immersed in an immersion solution consisting of hyaluronic acid (molecular weight 10,000-100,000) and lactic acid; the concentration of the immersion solution was 20 wt%; the mass ratio of hyaluronic acid to lactic acid was 3:3, and the solid-liquid ratio was 1 g:45 mL; the ultrasonic temperature was 35°C, the frequency was 13 KHz, and the time was 25 min;

[0057] Drying step: evenly spread the cooked ginseng in a cooking basket and dry it in a hot air circulation oven;

[0058] Packaging steps: pack the dried ginseng into 1 piece / bag to obtain the finished product.

[0059] Comparative Example 1

[0060] Compared with Example 1, the immersion liquid does not include hyaluronic acid, and the other parameters are consistent with those of Step Example 1.

[0061] Comparative Example 2

[0062] Compared with Example 1, the lactic acid in the impregnation solution was replaced by glycine in equal amounts, and the other parameters remained consistent with those in Step Example 1.

[0063] The ginsenoside contents in the skin and core of the ginseng products of Examples 1 to 3 and Comparative Examples 1 to 2 were measured, and the results are shown in Table 1 below:

[0064] The test results are shown in Table 1 below:

[0065] Table 1

[0066]

[0067] From the data of the embodiment in Table 1, it can be seen that the ginseng product obtained by the preparation method provided by the present invention has a high content of rare ginsenosides and is evenly distributed. From the data comparison of the embodiment and the comparative example in Table 1, it can be seen that the components in the soaking liquid will affect the content of ginsenosides.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preparing a ginseng product with a high rare saponin content, characterized in that: The following steps are involved: The cooked ginseng is immersed in an immersion solution composed of hyaluronic acid and lactic acid to obtain a ginseng product; The mass ratio of the hyaluronic acid to the lactic acid is (1-3):(3-5).

2. The preparation method according to claim 1, characterized in that: The mass ratio of the hyaluronic acid to the lactic acid is (1.5-2.5):(3.5-4).

3. The preparation method according to claim 1 or 2, characterized in that: The mass concentration of the impregnation solution is 10-20wt%; The material-liquid ratio of the impregnation treatment is 1 g:(20~50) mL.

4. The preparation method according to any one of claims 1 to 3, characterized in that The immersion treatment is carried out under ultrasonic conditions.

5. The preparation method according to claim 4, characterized in that: The temperature of the ultrasound is 35-55° C., the frequency is 10-15 KHz, and the time is 10-50 min.

6. The preparation method according to any one of claims 1 to 5, characterized in that The cooked ginseng is obtained by subjecting fresh ginseng to plasma treatment and then steaming it.

7. The preparation method according to claim 6, characterized in that: The plasma treatment time is 10 to 30 s.

8. The preparation method according to claim 6 or 7, characterized in that: The steaming temperature is 85-95° C. and the steaming time is 1-3 h.

9. The preparation method according to any one of claims 6 to 8, characterized in that The fresh ginseng is subjected to the pretreatment steps of washing and removing branch roots.

10. The ginseng product prepared by the preparation method according to any one of claims 1 to 9.

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