Preparation method of American ginseng concentrated solution with stable quality

Abstract

The invention discloses a preparation method of an American ginseng concentrated solution with stable quality, which is characterized in that the American ginseng concentrated solution is prepared by taking high-quality American ginseng and fruits and vegetables as raw materials through the processes of American ginseng extraction, auxiliary material preparation, compounding autolysis, vacuum concentration, homogenization and degassing, filling sterilization and packaging. The process method is unique, no chemical additive is added in the preparation process, the product quality and the health-care function tend to be stable, the content of the adopted 20ml bottle meets the daily dosage of 3-6g of American ginseng, the national food safety regulations and industrial green manufacturing requirements are met, the production efficiency is greatly improved, and the method is suitable for large-scale industrial production and has a wide application prospect. The development of the Chinese herbal medicine planting and processing industry can be promoted, the existing problems are solved, and the technical blank is filled. The American ginseng concentrated solution is stable in quality, free of any chemical additive and cane sugar and good in taste.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, and in particular to a method for preparing American ginseng concentrate with stable quality. Background Art

[0002] American ginseng oral liquid absorbs the process characteristics of traditional Chinese medicine preparations, and is obtained by further refining, concentrating, filling and sterilizing the decoction. It first appeared in the market as a health product. The edible and medicinal use of American ginseng has attracted more and more attention. The concept of ginseng health has become more deeply rooted in the hearts of the people. Consumption has become popular, popular and fashionable. All of this interprets the strong development and need of the health product market for ginseng processing technology and products. The research and development of American ginseng oral liquid has become a hot spot. The pharmacological mechanisms of American ginseng oral liquid mainly include enhancing immunity, anti-fatigue, anti-oxidation, etc. In addition, it also has the effects and functions of lowering blood sugar and protecting the cardiovascular system. American ginseng oral liquid has the advantages of small dosage, rapid absorption, convenient carrying and taking, and easy storage, which is especially suitable for modern industrial production.

[0003] At present, there are many kinds of American ginseng health care oral liquids on the market, including pharmaceutical American ginseng oral liquids, such as Sanyang brand American ginseng oral liquids, and registered and filed American ginseng oral liquids, such as Xu's American ginseng, Lei Yunshang, Hu Qingyutang, Kangfulai Pharmaceutical, Aodong, Ziguang, Lily, Fudonghai, Jianfang, Longbao Ginseng, Dongfanghong American Ginseng Pharmaceutical and other brands, covering various specifications of American ginseng oral liquids. With the continuous efforts of national policies, after American ginseng was included in the "medicine and food homology list", it can not only be sold as medicine and health food, but also made into beverages, such as American ginseng puree and American ginseng beverages. American ginseng beverage is not an oral liquid, and a beverage cannot be called an oral liquid. Even if it can be approved, it is not a stable name. However, this is a non-food processing technology problem. However, the quality instability problem that still exists in the method for preparing American ginseng oral liquid cannot be ignored. For example, the product content is low, the liquid is uneven, the content is unstable, there are large differences in quality between batches, the production cost is high, the sugar content is high, the chemical addition is serious, the taste is not good, and many other problems cannot meet people's pursuit of high-quality health food. There are even so-called American ginseng concentrates whose solid content is less than 3%, and its signature component content is low, which cannot reach the health effect that American ginseng should have. Therefore, it is urgent to solve the above problems. It is necessary to improve the existing technology to provide people with American ginseng oral liquid with stable quality and good taste. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing a concentrated American ginseng liquid with stable quality, solve the existing problems, improve the existing technology, and provide people with an oral American ginseng liquid with stable quality, no chemical additives, and good taste.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A method for preparing American ginseng concentrate with stable quality, comprising the following specific steps: (1) Extraction of American ginseng: Select pollution-free dry American ginseng with a total saponin content of more than 8%, crush it into particles of 0.85-2 mm, put it into an ultrasonic extraction tank, add 10-15 times the amount of water, soak it for 20-40 minutes, then perform ultrasonic extraction for 2 hours and filter it, the ultrasonic power is 300-800W, the temperature is controlled at 75-85°C, the residue after filtration is extracted for the second time, 7 times the amount of water is added, ultrasonic extraction is performed for 1.5 hours and then filtered, the residue after filtration is extracted for the third time, 5 times the amount of water is added, ultrasonic extraction is performed for 1 hour and then filtered, and the three filtrates are combined to obtain American ginseng extract; (2) Preparation of auxiliary materials: Select fresh, non-rotten, 7-9 ripe fruit and vegetable raw materials, such as fruit raw materials: figs, monk fruit, apples, mulberries, kiwis, etc., and vegetable materials: papaya, pineapple, stevia, etc., choose one of the fruits or vegetables, wash it, cut it into thin slices, dry and grind it, and then mix it in a ratio of 1:0.5-2 to make a fruit and vegetable powder of 100-300 mesh; Preferably, the fruits and vegetables described in this step are selected from monk fruit and papaya as raw materials, and are made into monk fruit powder and papaya powder respectively, with a mixing ratio of 1:2; (3) Compound autolysis: The prepared American ginseng extract is sent into an ultrasonic reactor, 3-15% of the above-mentioned fruit and vegetable powder is added, the temperature is controlled at 47°C-65°C, the ultrasonic power is 500-800W, and the ultrasonic autolysis conversion is performed for 1-3 hours to prepare an American ginseng compound liquid; (4) Vacuum concentration: The prepared American ginseng composite liquid is concentrated by a rising film concentration method, and the total saponin content is concentrated to more than 9 mg / ml and the soluble solid content is more than 10% under the conditions of a vacuum degree of -0.08 to 0.09 MPa and a temperature of 45°C; (5) Shear homogenization: The concentrated American ginseng compound liquid is passed through a high shear homogenizer at a linear speed of 40 to 66 m / s to shear the large particles into smaller particles, which are evenly and stably dispersed in the liquid. The particles of different sizes and relative densities in the American ginseng compound liquid are further sheared and made uniform, which promotes the exudation of the compound, increases the affinity of American ginseng to the fruit and vegetable compound, inhibits the stratification and precipitation of the liquid, and keeps the liquid uniform and stable. (6) Degassing and filtration: The sheared and homogenized American ginseng concentrate is degassed at room temperature in a degassing tank with a vacuum degree of 93.3 kPa. After the liquid has been in the tank for 2 minutes, it is adsorbed and filtered to remove odorous substances, pesticide residues and impurities in the liquid by activated carbon adsorption, thereby improving the purity and taste of the American ginseng concentrate; (7) Filling and sterilization: The degassed and filtered American ginseng concentrate is sent to the filling line, filled and sealed in 20 ml or larger medical glass bottles, and then sterilized, preferably by microwave sterilization, and then inspected and packaged to produce the American ginseng concentrate of the present invention.

[0006] The invention can also adopt the process method with such characteristics to further process the American ginseng concentrated granules.

[0007] Compared with the prior art, the advantages of the present invention are: 1. The present invention uses pollution-free dry American ginseng raw materials with a total saponin content of more than 8%, and fresh, non-rotten, 70 to 90% ripe fruit and vegetable auxiliary materials, which solves the problem of large differences in products between production batches due to raw material problems in the past, resulting in unstable product quality between batches, and ultimately affecting the quality of American ginseng concentrate and poor taste. The effective control of the quality of the raw and auxiliary materials used makes the health care function of American ginseng concentrate more stable.

[0008] 2. The present invention has been found through long-term tests that fruit and vegetable powder (preferably, monk fruit and papaya) as auxiliary materials is added to the American ginseng extract in a certain proportion, the temperature is controlled at 47°C-65°C, the ultrasonic power is 500-800W, and after ultrasonic autolysis and fermentation for 1-3 hours, it is detected that the pore size through which the liquid passes is less than 5μm, and the intrinsic viscosity is reduced from 210dL / g to 130-150dL / g, which fully demonstrates that its solubility is improved, and the absorption and utilization rate of effective substances in the body must be higher. The acoustic cavitation of the liquid under the action of ultrasound can also degrade the pesticide residues in the American ginseng liquid, reduce the bitterness, and significantly improve the taste.

[0009] 3. The composite autolysis process adopted by the present invention solves the problems of liquid unevenness and stratification, and changes the conventional enzyme clarification method to decompose pectin and starch in the liquid to achieve the purpose of clarification. The American ginseng liquid contains about 0.3% pectin, which will make the liquid turbid and stratified, while the biological enzyme contained in the auxiliary fruit and vegetable powder can degrade pectin and other substances in the liquid.

[0010] 4. The shear homogenization process adopted by the present invention homogenizes the concentrated American ginseng composite liquid through a high shear homogenizer at a linear speed of 40 to 66 m / s, shears large particles into smaller particles, and disperses them evenly and stably in the liquid, further refining the liquid and making it uniform, promoting pectin exudation, inhibiting liquid stratification and precipitation, and keeping the liquid uniform and stable.

[0011] 5. The degassing and filtration process adopted by the present invention is to degas the homogeneous American ginseng concentrate at room temperature in a degassing tank with a vacuum degree of 93.3 kpa. The air in the liquid is discharged, and the gas dissolved in the concentrate under vacuum is continuously released due to supersaturation, thereby removing oxygen from the liquid, especially the turbid liquid, preventing or reducing changes in the properties of the liquid, and preventing suspended particles from absorbing gas and floating on the liquid surface and generating foam. After degassing, adsorption filtration is performed to remove odorous substances, agricultural residues and impurities in the liquid by utilizing the good adsorption capacity of activated carbon materials, thereby improving the purity and taste of the American ginseng concentrate.

[0012] 6. The present invention selects high-quality American ginseng raw materials and fruit and vegetable auxiliary materials, and adopts unique process steps of American ginseng extraction, auxiliary material preparation, compound autolysis, vacuum concentration, homogenization and degassing, and filling and sterilization. There is no chemical additive in the preparation process, so that the quality and function of the American ginseng concentrate produced are more stable. The 20 ml bottle used can meet the one-time daily dosage requirement of American ginseng, ensure the content and stability of the American ginseng concentrate, comply with national food safety regulations and industrial green manufacturing requirements, greatly improve production efficiency, be suitable for large-scale industrial production, promote the development of Chinese herbal medicine planting and processing industry, fill the technical gap, and provide a method for preparing American ginseng concentrate with stable quality. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with embodiments: Example

[0014] Harvest pollution-free dry American ginseng with a total saponin content of 8%, crush it into a particle size of 2 mm, put it into an ultrasonic extraction tank, add 15 times the amount of water, soak it for 30 minutes, then perform ultrasonic extraction for 2 hours and filter it, the ultrasonic power is 800W, the temperature is controlled at 75°C, extract the residue after filtration for the second time, add 7 times the amount of water, perform ultrasonic extraction for 1.5 hours and filter it, extract the residue after filtration for the third time, add 5 times the amount of water, perform ultrasonic extraction for 1 hour and filter it, and combine the three filtrates to obtain American ginseng extract; Harvest fresh, non-rotten, 80% ripe monk fruit and 70% ripe papaya, wash them, cut them into thin slices, dry and grind them, and then mix them in a ratio of 1:2 to make 100-mesh fruit and vegetable powder; Weigh the above American ginseng extract into an ultrasonic reactor, add 13% of the prepared fruit and vegetable powder, control the temperature at 49°C, set the ultrasonic power to 600W, and perform ultrasonic autolysis and fermentation for 2 hours to prepare an American ginseng composite liquid; Weigh the above American ginseng compound liquid and concentrate it by ascending membrane concentration method. Concentrate for 20 minutes under the conditions of vacuum degree of -0.09 MPa and temperature of 45°C, so that the total saponin content of the extract reaches more than 9 mg / ml and the soluble solid content reaches 14%; Weigh the above concentrate and pass it through a high shear homogenizer at a linear speed of 60 m / s, so as to shear particles larger than 3 μm into smaller particles, and evenly and stably disperse them in the liquid, so as to further crush and evenly distribute particles of different particle sizes and relative densities in the American ginseng compound liquid, promote the exudation of the compound, increase the affinity of the American ginseng to the fruit and vegetable compound, inhibit the stratification of the liquid and the generation of precipitation, and keep the liquid uniform and stable; Weigh the above-mentioned shear-homogenized American ginseng concentrate, degas it at room temperature in a degassing tank, the vacuum degree in the tank is 93.3 kpa, and the liquid is adsorbed and filtered after staying in the tank for 2 minutes. The good adsorption capacity of the activated carbon material is used to remove odorous substances, agricultural residues and impurities in the liquid, thereby improving the purity and taste of the American ginseng concentrate.

[0015] The filtered American ginseng concentrate is weighed and sent to a filling line, filled and sealed in 20 ml medical glass bottles, and then sent to a tunnel type microwave sterilizer for sterilization, and then tested and packaged to prepare the American ginseng concentrate of the present invention. Example

[0016] Harvest pollution-free dry American ginseng with a total saponin content of 8.3%, crush it into a particle size of 1.8 mm, put it into an ultrasonic extraction tank, add 15 times the amount of water, soak it for 40 minutes, then perform ultrasonic extraction for 2 hours and filter it, the ultrasonic power is 600W, the temperature is controlled at 78°C, extract the residue after filtration for the second time, add 7 times the amount of water, perform ultrasonic extraction for 1.5 hours and filter it, extract the residue after filtration for the third time, add 5 times the amount of water, perform ultrasonic extraction for 1 hour and filter it, and combine the three filtrates to obtain American ginseng extract; Harvest fresh, non-rotten, 90% ripe monk fruit and 80% ripe papaya, wash them, cut them into thin slices, dry and grind them, and then mix them in a ratio of 1:2 to make 150 mesh fruit and vegetable powder; Weigh the prepared American ginseng extract and put it into an ultrasonic reactor, add 9% of the prepared fruit and vegetable powder, control the temperature at 55°C, set the ultrasonic power to 600W, and perform ultrasonic autolysis and fermentation for 2 hours to prepare an American ginseng composite liquid; Weigh the prepared American ginseng compound liquid and concentrate it by ascending membrane concentration method. Under the conditions of vacuum degree of -0.09MPa and temperature of 45℃, concentrate for 20min to concentrate the extract to a total saponin content of 9.1mg / ml. The soluble solid content reaches 14.3%. The prepared concentrated liquid is weighed and homogenized by high shear at a linear speed of 66 m / s, so that particles larger than 3 μm are sheared into smaller particles, which are evenly and stably dispersed in the liquid, so that particles of different particle sizes and relative densities in the American ginseng compound liquid are further crushed and made uniform, so as to promote the exudation of the compound, increase the affinity of the American ginseng to the fruit and vegetable compound, inhibit the stratification of the liquid and the generation of precipitation, and keep the liquid uniform and stable; Weigh the American ginseng concentrate that has been sheared and homogenized, degas it in a degassing tank at room temperature, the vacuum degree in the tank is 93.3 kpa, and after the liquid stays in the tank for 2 minutes, it is adsorbed and filtered to remove odor substances, agricultural residues and impurities in the liquid by using the adsorption capacity of the activated carbon material, thereby improving the purity and taste of the American ginseng concentrate; The filtered American ginseng concentrate is weighed and sent to a filling line, filled and sealed in 20 ml medical glass bottles, and then sent to a tunnel type microwave sterilizer for sterilization, and then tested and packaged to prepare the American ginseng concentrate of the present invention. Example

[0017] Harvest pollution-free dry American ginseng with a total saponin content of 9%, crush it into a particle size of 2 mm, put it into an ultrasonic extraction tank, add 12 times the amount of water, soak it for 30 minutes, then perform ultrasonic extraction for 2 hours, filter it again, use an ultrasonic power of 800W, control the temperature at -85°C, extract the residue after filtration for the second time, add 7 times the amount of water, perform ultrasonic extraction for 1.5 hours, and then filter it again. After filtration, extract the residue for the third time, add 5 times the amount of water, perform ultrasonic extraction for 1 hour, and combine the three filtrates to obtain an American ginseng extract; Harvest fresh, non-rotten, 90% ripe monk fruit and 70% ripe papaya, wash them, cut them into thin slices, dry and grind them, and then mix them in a ratio of 1:2 to make 200-mesh fruit and vegetable powder; Weigh the prepared American ginseng extract and put it into an ultrasonic reactor, add 11% of the prepared fruit and vegetable powder, control the temperature at 49°C, set the ultrasonic power to 800W, and perform ultrasonic autolysis and fermentation for 1 hour to prepare an American ginseng composite liquid; Weigh the prepared American ginseng compound liquid and concentrate it by ascending membrane concentration method. Under the conditions of vacuum degree of -0.09MPa and temperature of 45℃, concentrate for 20min to concentrate the extract to a total saponin content of 9.7mg / ml and soluble solids of 14.7%. The concentrated liquid prepared above was weighed and homogenized by high shear at a linear speed of 66 m / s to shear the particles of 3 μm into smaller particles, which were evenly and stably dispersed in the liquid, so that the particles of different particle sizes and different relative densities in the American ginseng compound liquid were further crushed and made uniform, promoting the exudation of the compound, increasing the affinity of the ginseng to the fruit and vegetable compound, inhibiting the stratification and precipitation of the liquid, and keeping the liquid uniform and stable; Weigh the American ginseng concentrate that has been sheared and homogenized, degas it in a degassing tank at room temperature, the vacuum degree in the tank is 93.3 kpa, and after the liquid stays in the tank for 2 minutes, it is adsorbed and filtered to remove odor substances, agricultural residues and impurities in the liquid by using the adsorption capacity of activated carbon, thereby improving the purity and taste of the American ginseng concentrate; The filtered American ginseng concentrate is weighed and sent to a filling line, filled and sealed in 20 ml medical glass bottles, then sent to a tunnel type microwave sterilizer for sterilization, and then spray dried, granulated, packaged and other process steps to prepare the American ginseng concentrated granules of the present invention.

[0018] The present invention conducted a comparative test on the finished product of the American ginseng concentrated liquid extracted by conventional water boiling and the finished product of the American ginseng concentrated liquid of the present invention. At the same time, a comparative test was conducted on the American ginseng composite liquid (semi-finished product) obtained by the "compounding and autolysis" step of the present invention, and the "taste", "soluble solids" and "total saponin content" were measured respectively. The comparison of the test results is shown in Table 1 below.

[0019] Table 1 Comparison of the detection of the concentrate of the present invention and conventional water extraction and compound autolysis products project Conventional water extraction products Compound autolytic products Concentrate of the present invention Taste Bitter and slightly sweet Half bitter and half sweet Slightly bitter and sweet Soluble solids% 4 11 14.5 Total saponin content mg / ml 5.9 6.2 9.7 The above experimental results show that the concentrate of the present invention has significantly increased soluble solids and total saponin content compared with conventional water extraction and compound autolysis products. The results show that the product of the present invention has high nutritional content, high solid content, stable content of characteristic components, and good taste, which solves the problems in this aspect of past processing and can achieve the health care effect that the product should have.

[0020] The present invention conducts a stability evaluation experiment on the American ginseng concentrate product. The placement conditions of the experimental samples are as follows: temperature 35±2°C, relative humidity RH75±5%, avoid direct light, and observe continuously for 3 months, once every 30 days. The inspection reports of three batches (the first batch sample batch number 22021601, the second batch sample batch number 22021701, and the third batch sample batch number 22021801) are as follows: Table 2 Inspection report of three batches of samples in month 0 Inspection items unit Technical requirements Sample batch number 22021601 Sample batch number 22021701 Sample batch number 22021801 Eligibility Color / Light yellow or light brown, uniform color Meet the requirements Meet the requirements Meet the requirements qualified Taste and smell / It has the unique taste and smell of this product, and no foreign smell Meet the requirements Meet the requirements Meet the requirements qualified state / No visible foreign matter. Sedimentation but no agglomeration Meet the requirements Meet the requirements Meet the requirements qualified Soluble solids % ≥10.0 14.5 13.1 14.3 qualified Total saponins (ginsenosides) mg / mi ≥8 9.0 8.9 9.3 qualified Lead (Pb) mg / L ≤0.05 Not detected Not detected Not detected qualified Total arsenic (as As) mg / L ≤0.2 Not detected Not detected Not detected qualified DDT mg / kg ≤0.01 Not detected Not detected Not detected qualified 666 mg / kg ≤0.01 Not detected Not detected Not detected qualified 5-6-nitrobenzene mg / kg ≤0.01 Not detected Not detected Not detected qualified Total colony count CFU / g ≤30000 <10 <10 <10 qualified Coliform bacteria MPN / g ≤0.92 <0.30 <0.30 <0.30 qualified Mold and yeast CFU / g ≤50 <10 <10 <10 qualified salmonella / 25g Not to be detected Not detected Not detected Not detected qualified Staphylococcus aureus / 25g Not to be detected Not detected Not detected Not detected qualified Table 3 Batch sample first month inspection report Inspection items unit Technical requirements Sample batch number 22021601 Sample batch number 22021701 Sample batch number 22021801 Eligibility Color / Light yellow or light brown, uniform color Meet the requirements Meet the requirements Meet the requirements qualified Taste and smell / It has the unique taste and smell of this product, and no foreign smell Meet the requirements Meet the requirements Meet the requirements qualified state / No visible foreign matter. Sedimentation but no agglomeration Meet the requirements Meet the requirements Meet the requirements qualified Soluble solids % ≥10.0 14.5 13.1 14.3 qualified Total saponins (ginsenosides) mg / mi ≥8 9.1 8.9 9.3 qualified Lead (Pb) mg / L ≤0.05 Not detected Not detected Not detected qualified Total arsenic (as As) mg / L ≤0.2 Not detected Not detected Not detected qualified DDT mg / kg ≤0.01 Not detected Not detected Not detected qualified 666 mg / kg ≤0.01 Not detected Not detected Not detected qualified 5-6-nitrobenzene mg / kg ≤0.01 Not detected Not detected Not detected qualified Total colony count CFU / g ≤30000 <10 <10 <10 qualified Coliform bacteria MPN / g ≤0.92 <0.30 <0.30 <0.30 qualified Mold and yeast CFU / g ≤50 <10 <10 <10 qualified salmonella / 25g Not to be detected Not detected Not detected Not detected qualified Staphylococcus aureus / 25g Not to be detected Not detected Not detected Not detected qualified Table 4 Inspection report of three batches of samples in the second month Inspection items unit Technical requirements Sample batch number 22021601 Sample batch number 22021701 Sample batch number 22021801 Eligibility Color / Light yellow or light brown, uniform color Meet the requirements Meet the requirements Meet the requirements qualified Taste and smell / It has the unique taste and smell of this product, and no foreign smell Meet the requirements Meet the requirements Meet the requirements qualified state / No visible foreign matter. Sedimentation but no agglomeration Meet the requirements Meet the requirements Meet the requirements qualified Soluble solids % ≥10.0 14.5 13.1 14.3 qualified Total saponins (ginsenosides) mg / mi ≥8 9.1 8.8 9.2 qualified Lead (Pb) mg / L ≤0.05 Not detected Not detected Not detected qualified Total arsenic (as As) mg / L ≤0.2 Not detected Not detected Not detected qualified DDT mg / kg ≤0.01 Not detected Not detected Not detected qualified 666 mg / kg ≤0.01 Not detected Not detected Not detected qualified 5-6-nitrobenzene mg / kg ≤0.01 Not detected Not detected Not detected qualified Total colony count CFU / g ≤30000 <10 <10 <10 qualified Coliform bacteria MPN / g ≤0.92 <0.30 <0.30 <0.30 qualified Mold and yeast CFU / g ≤50 <10 <10 <10 qualified salmonella / 25g Not to be detected Not detected Not detected Not detected qualified Staphylococcus aureus / 25g Not to be detected Not detected Not detected Not detected qualified Table 5 Batch sample inspection report for the third month Inspection items unit Technical requirements Sample batch number 22021601 Sample batch number 22021701 Sample batch number 22021801 Eligibility Color / Light yellow or light brown, uniform color Meet the requirements Meet the requirements Meet the requirements qualified Taste and smell / It has the unique taste and smell of this product, and no foreign smell Meet the requirements Meet the requirements Meet the requirements qualified state / No visible foreign matter. Sedimentation but no agglomeration Meet the requirements Meet the requirements Meet the requirements qualified Soluble solids % ≥10.0 14.5 13.1 14.3 qualified Total saponins (ginsenosides) mg / mi ≥8 9.05 8.8 9.2 qualified Lead (Pb) mg / L ≤0.05 Not detected Not detected Not detected qualified Total arsenic (as As) mg / L ≤0.2 Not detected Not detected Not detected qualified DDT mg / kg ≤0.01 Not detected Not detected Not detected qualified 666 mg / kg ≤0.01 Not detected Not detected Not detected qualified 5-6-nitrobenzene mg / kg ≤0.01 Not detected Not detected Not detected qualified Total colony count CFU / g ≤30000 <10 <10 <10 qualified Coliform bacteria MPN / g ≤0.92 <0.30 <0.30 <0.30 qualified Mold and yeast CFU / g ≤50 <10 <10 <10 qualified salmonella / 25g Not to be detected Not detected Not detected Not detected qualified Staphylococcus aureus / 25g Not to be detected Not detected Not detected Not detected qualified The prepared American ginseng concentrate product was subjected to short-term and long-term tests to examine the product quality stability, and the accelerated test was used to examine the product quality stability. The 24-month samples from the same batch were also used to compare the data from the 0th month with no significant changes. The inspection report is shown in Table 6: Table 6 Batch sample inspection report for the 24th month Inspection items unit Technical requirements Sample batch number 22021601 Sample batch number 22021701 Sample batch number 22021801 Eligibility Color / Light yellow or light brown, uniform color Meet the requirements Meet the requirements Meet the requirements qualified Taste and smell / It has the unique taste and smell of this product, and no foreign smell Meet the requirements Meet the requirements Meet the requirements qualified state / No visible foreign matter. Sedimentation but no agglomeration Meet the requirements Meet the requirements Meet the requirements qualified Soluble solids % ≥10.0 14.3 13.0 14.2 qualified Total saponins (ginsenosides) mg / mi ≥8 9.05 8.7 9.2 qualified Lead (Pb) mg / L ≤0.05 Not detected Not detected Not detected qualified Total arsenic (as As) mg / L ≤0.2 Not detected Not detected Not detected qualified DDT mg / kg ≤0.01 Not detected Not detected Not detected qualified 666 mg / kg ≤0.01 Not detected Not detected Not detected qualified 5-6-nitrobenzene mg / kg ≤0.01 Not detected Not detected Not detected qualified Total colony count CFU / g ≤30000 <10 <10 <10 qualified Coliform bacteria MPN / g ≤0.92 <0.30 <0.30 <0.30 qualified Mold and yeast CFU / g ≤50 <10 <10 <10 qualified salmonella / 25g Not to be detected Not detected Not detected Not detected qualified Staphylococcus aureus / 25g Not to be detected Not detected Not detected Not detected qualified The above experimental results show that the product quality is stable after 3 months and 24 months, and there is no problem of discoloration, deterioration, taste change, etc.

[0021] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for preparing a concentrated American ginseng solution with stable quality, the specific steps are as follows: (1) Extraction of American ginseng: Select pollution-free dry American ginseng with a total saponin content of more than 8%, crush it into particles of 0.85-2 mm, put it into an ultrasonic extraction tank, add 10-15 times the amount of water, soak it for 20-40 minutes, then perform ultrasonic extraction for 2 hours and filter it. The ultrasonic power is 300-800W and the temperature is controlled at 75-85°C. The residue after filtration is extracted for the second time, 7 times the amount of water is added, ultrasonic extraction is performed for 1.5 hours and then filtered. The residue after filtration is extracted for the third time, 5 times the amount of water is added, ultrasonic extraction is performed for 1 hour and then filtered. The three filtrates are combined to obtain the American ginseng extract; (2) Preparation of auxiliary materials: Select fresh, non-rotten, 7-9 ripe fruit and vegetable raw materials, such as fruit raw materials: figs, monk fruit, apples, mulberries, kiwis, etc., and vegetable materials: papaya, pineapple, stevia, etc., choose one of the fruits or vegetables, wash it, cut it into thin slices, dry and grind it, and then mix it in a ratio of 1:0.5-2 to make a fruit and vegetable powder of 100-300 mesh; Preferably, the fruits and vegetables in this step are selected from monk fruit and papaya as raw materials, and are made into monk fruit powder and papaya powder respectively, with a mixing ratio of 1:2; (3) Compound autolysis: The prepared American ginseng extract is sent into an ultrasonic reactor, 3-15% of the prepared fruit and vegetable powder is added, the temperature is controlled at 47°C-65°C, the ultrasonic power is 500-800W, and the ultrasonic autolysis conversion is carried out for 1-3 hours to prepare an American ginseng compound liquid; (4) Vacuum concentration: The prepared American ginseng composite liquid is concentrated by a rising film concentration method, and the total saponin content is concentrated to more than 9 mg / ml under the conditions of a vacuum degree of -0.08 to 0.09 MPa and a temperature of 45°C. The soluble solid content is more than 10%; (5) Shear homogenization: The concentrated American ginseng compound liquid is passed through a high shear homogenizer at a linear speed of 40 to 66 m / s, and the large particles are sheared into smaller particles, which are evenly and stably dispersed in the liquid. The particles of different sizes and relative densities in the American ginseng compound liquid are further crushed and made uniform, which promotes the exudation of the compound, increases the affinity of American ginseng to the fruit and vegetable compound, inhibits the stratification of the liquid and the generation of precipitation, and makes the liquid uniform and stable. (6) Degassing and filtration: The sheared and homogenized American ginseng concentrate is degassed in a degassing tank at room temperature. The vacuum degree in the tank is 93.3 kPa. After the liquid stays in the tank for 2 minutes, it is adsorbed and filtered. The adsorption capacity of activated carbon is used to remove odorous substances, pesticide residues and impurities in the liquid, thereby improving the purity and taste of the American ginseng concentrate; (7) Filling and sterilization: The degassed and filtered American ginseng concentrate is sent to the filling line, filled and sealed in 20 ml or larger medical glass bottles, and then sterilized, preferably by microwave sterilization, and then inspected and packaged to produce the American ginseng concentrate of the present invention.

2. The method for preparing a concentrated American ginseng solution with stable quality according to claim 1, further characterized in that: The process with these characteristics is adopted to further process the American ginseng into concentrated granules.