Hippophae rhamnoides flash-release direct-drinking powder with anti-oxidation function and preparation method thereof

Abstract

The invention belongs to the technical field of food, and discloses sea-buckthorn flash-release direct drinking powder with an anti-oxidation function and a preparation method of the sea-buckthorn flash-release direct drinking powder. The sea-buckthorn flash release direct drinking powder comprises the following raw materials in parts by weight: 60-65 parts of sea-buckthorn fruit oil microcapsule powder, 15-25 parts of sea-buckthorn freeze-dried powder, 10-15 parts of sea-buckthorn fruit powder, 5-10 parts of xylitol and 0.1-0.5 part of silicon dioxide. The preparation method comprises the following steps: weighing the raw materials in parts by weight, mixing and sieving to obtain the sea-buckthorn instant-release direct-drinking powder which does not need assistance of water and swallowing actions, is instant in the oral cavity, is high in nutrient content, remarkable in antioxidant effect and good in taste, and can prolong the storage life of the product.

Description

Technical Field

[0001] The invention relates to the field of food technology, and in particular to a sea buckthorn instant-release direct drinking powder with antioxidant function and a preparation method thereof. Background Art

[0002] Seabuckthorn is a deciduous shrub or small tree of the genus Acidoptera in the family Elaeagnaceae. It is a precious tree species that combines ecological, economic and social benefits, and has high edible and medicinal value. Seabuckthorn fruit is rich in bioactive ingredients such as vitamins, fatty acids, anthocyanins, flavonoids and trace elements, and has the effects of anti-oxidation, lowering blood pressure, improving immunity, anti-aging and preventing and treating coronary heart disease. The rich variety and high content of vitamins in seabuckthorn fruit are the most distinctive nutrients of seabuckthorn, especially the content of vitamin C, a strong antioxidant, which ranks first among all kinds of wild berries and cultivated fruits, so seabuckthorn fruit has the reputation of "King of Vitamin C".

[0003] In recent years, seabuckthorn solid beverages have become more and more popular among consumers in the market. However, traditional seabuckthorn solid beverages need to be mixed and drunk, and combined with the conventional preparation process of seabuckthorn solid beverages, there are often problems such as low nutrient retention rate, poor solubility, bad taste, and short shelf life. In addition, there is agglomeration during dissolution, which affects consumers' drinking experience. Therefore, it is necessary to provide a seabuckthorn direct drinking powder with fast dissolution speed, high nutrient retention rate, significant antioxidant effect, good taste, and long product storage period, which is the research focus in this field. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention aims to provide a sea buckthorn instant-release direct drinking powder with antioxidant function and a preparation method thereof, so as to obtain a sea buckthorn instant-release direct drinking powder that does not require the assistance of water and swallowing, dissolves quickly in the mouth, has a high content of nutrients, has a significant antioxidant effect, has a good taste, and can also increase the shelf life of the product.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A seabuckthorn instant-release drinking powder with antioxidant function, characterized in that the raw materials include, by weight, 60-65 parts of seabuckthorn oil microcapsule powder, 15-25 parts of seabuckthorn freeze-dried powder, 10-15 parts of seabuckthorn fruit powder, 5-10 parts of xylitol, and 0.1-0.5 parts of silicon dioxide.

[0007] By adopting the above technical scheme, sea buckthorn has antioxidant, blood pressure lowering, immunity improving, anti-aging and coronary heart disease prevention and treatment effects because it is rich in vitamins, fatty acids, flavonoids and other bioactive ingredients; xylitol can not only be used as a sweetener to adjust the taste of the direct drinking powder, but also when used in solid form in the sea buckthorn instant-release direct drinking powder, it will produce a pleasant cool feeling in the mouth, thereby improving the taste of the sea buckthorn instant-release direct drinking powder; silicon dioxide as an anti-caking agent can effectively prevent the agglomeration of the raw material powders in the sea buckthorn instant-release direct drinking powder, reduce the viscosity of the powder, make the powder loose, increase fluidity, and thus increase the storage time of the sea buckthorn instant-release direct drinking powder.

[0008] Furthermore, the sea buckthorn fruit oil microcapsule powder is prepared by mixing sea buckthorn fruit oil with sodium caseinate, sodium starch octenylsuccinate and mono- and di-glycerides dissolved in distilled water, shearing at a speed of 10,000 r / min for 5 to 10 minutes, homogenizing at a pressure of 10 to 30 MPa, sterilizing at a sterilization temperature of 115 to 135° C. for 4 to 15 seconds, and finally spray drying at an inlet air temperature of 170 to 180° C. and an outlet air temperature of 80 to 90° C.

[0009] Furthermore, the sea buckthorn fruit oil, distilled water, sodium caseinate, sodium starch octenylsuccinate and mono- and di-glycerides of fatty acids are respectively in proportions by weight of 20-30 parts, 60-65 parts, 5-10 parts, 5-15 parts and 5-10 parts.

[0010] By adopting the above technical scheme, seabuckthorn fruit oil is rich in unsaturated fatty acids and various biologically active substances such as flavonoids, vitamins, tocopherol, etc., and has the effects of enhancing the body's immune function, anti-oxidation, bactericidal and anti-inflammatory, resolving dead tissue and promoting tissue regeneration, etc.; by utilizing the microencapsulation technology, seabuckthorn fruit oil can, on the one hand, improve the oxidative stability of seabuckthorn fruit oil, and on the other hand, maintain the biological activity of the effective components of seabuckthorn fruit oil to the greatest extent; the seabuckthorn fruit oil microcapsule powder prepared by the microencapsulation technology has the characteristics of small and uniform particle size, high solubility and good stability.

[0011] Furthermore, the sea buckthorn freeze-dried powder is obtained by pre-freezing the sea buckthorn fruit at a pre-freezing temperature of -25 to -35°C for 15 to 20 hours, then breaking the wall at a temperature of 4°C and a rotation speed of 15,000 to 30,000 r / min for 30 minutes, and then freeze-drying at a vacuum freeze-drying temperature of -45 to -50°C for 24 hours before crushing.

[0012] By adopting the above technical scheme, the preparation method of sea buckthorn freeze-dried powder adopts a vacuum freeze-drying process, which provides a low-temperature vacuum environment, removes moisture in the sea buckthorn fruit, avoids side effects such as high-temperature oxidation, and is conducive to maximally retaining the nutrients and flavor substances in the sea buckthorn fruit. The prepared sea buckthorn freeze-dried powder has fine powder quality and good solubility.

[0013] Furthermore, the sea buckthorn fruit powder is prepared by beating and crushing the sea buckthorn fruit to remove the seeds, centrifuging at a speed of 4000-4500 r / min for 15 minutes to obtain sea buckthorn juice, concentrating it under conditions of a vacuum degree of 75-95 kpa and a temperature of 45-65° C., then performing high-temperature instantaneous sterilization at a sterilization temperature of 115-125° C. for 5-15 seconds, and finally spray drying it under conditions of an inlet air temperature of 170° C.-180° C. and an outlet air temperature of 80-90° C.

[0014] By adopting the above technical scheme, the method for preparing sea buckthorn fruit powder uses a reduced pressure vacuum concentration method to protect the flavor and nutrients of sea buckthorn juice at a relatively low temperature; a high temperature instantaneous sterilization method is used to achieve a good sterilization effect while better retaining the nutrients and ensuring the stability of vitamin C in the sea buckthorn fruit powder; finally, the sea buckthorn fruit powder prepared by spray drying has high quality, good solubility and good stability.

[0015] The present invention also provides a method for preparing a seabuckthorn instant-release direct drinking powder with antioxidant function, which is characterized in that the raw materials seabuckthorn fruit oil microcapsule powder, seabuckthorn freeze-dried powder, seabuckthorn fruit powder, xylitol and silicon dioxide are weighed respectively by weight, mixed and sieved to obtain the seabuckthorn instant-release direct drinking powder with antioxidant function.

[0016] Furthermore, the mixing is carried out by a mixer, the speed of the mixer is 8 to 20 r / min, and the mixing time is 15 to 20 min.

[0017] Furthermore, the screening uses a screen with a screen diameter of 60 to 80 meshes.

[0018] By adopting the above technical scheme, the sea buckthorn instant-release direct drinking powder after mixing and sieving has a small and uniform particle size, which is convenient for rapid dissolution in the mouth, and can achieve an instant-release effect by dissolving in the mouth without the need for brewing.

[0019] In summary, the present invention has the following beneficial effects:

[0020] 1. The present invention provides a sea buckthorn instant-release direct drinking powder with antioxidant function. By adopting preparation processes of different raw materials, sea buckthorn fruit oil microcapsule powder, sea buckthorn freeze-dried powder and sea buckthorn fruit powder with the characteristics of small and uniform particle size, high solubility, good stability, high nutrient content, etc. are prepared respectively. The sweetener xylitol is added to the raw materials to improve the taste of the sea buckthorn instant-release direct drinking powder and increase the cool feeling. In addition, by adding a small amount of anti-caking agent silicon dioxide, the raw material powders in the sea buckthorn instant-release direct drinking powder are prevented from agglomerating, the powder viscosity is reduced, the powder becomes loose, and the fluidity is increased, thereby increasing the storage time of the sea buckthorn instant-release direct drinking powder.

[0021] 2. The present invention also provides a method for preparing a seabuckthorn instant-release direct drinking powder with antioxidant function. The prepared seabuckthorn instant-release direct drinking powder has a small and uniform particle size, is easy to dissolve quickly in the mouth, can dissolve in the mouth, and achieves an instant-release effect within seconds. At the same time, it does not require brewing and is easy to use.

[0022] 3. The preparation method of the seabuckthorn instant-release direct drinking powder of the present invention can not only retain the nutrients and flavor substances in the seabuckthorn oil and seabuckthorn fruit to the maximum extent, but also has a significant antioxidant effect, while ensuring the stability of the seabuckthorn instant-release direct drinking powder and extending the shelf life. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the embodiments, but the protection scope is not limited thereto.

[0024] Example 1

[0025] A sea buckthorn instant-release direct drinking powder with antioxidant function, the raw materials of which include, by weight, 60 parts of sea buckthorn oil microcapsule powder, 15 parts of sea buckthorn freeze-dried powder, 10 parts of sea buckthorn fruit powder, 5 parts of xylitol and 0.1 part of silicon dioxide.

[0026] The preparation process of the raw material sea buckthorn oil microcapsule powder in the sea buckthorn flash-release direct drinking powder includes: extracting sea buckthorn oil from sea buckthorn pulp by supercritical CO2 extraction, mixing the sea buckthorn oil with sodium caseinate, sodium starch octenyl succinate and mono- and di-glycerides dissolved in distilled water, wherein the sea buckthorn oil, distilled water, sodium caseinate, sodium starch octenyl succinate and mono- and di-glycerides are 20 parts, 60 parts, 5 parts, 5 parts and 5 parts by weight respectively, followed by shearing at a speed of 10000r / min for 5 minutes, and then homogenizing at a pressure of 10MPa, sterilizing at a sterilization temperature of 115°C for 4s after homogenization, and finally spray drying at an inlet air temperature of 170°C and an outlet air temperature of 80°C.

[0027] The preparation process of the raw material sea buckthorn freeze-dried powder in the sea buckthorn flash-release direct drinking powder includes pre-freezing the sea buckthorn fruit at a pre-freezing temperature of -25°C for 15 hours, then breaking the wall at a temperature of 4°C and a rotation speed of 15000r / min for 30 minutes, and then freeze-drying it at a vacuum freeze-drying temperature of -45°C for 24 hours before crushing it.

[0028] The preparation process of the raw material sea buckthorn fruit powder in the sea buckthorn flash-release direct drinking powder includes pulping, crushing and seeding the sea buckthorn fruit, centrifuging at a speed of 4000r / min for 15min to obtain the sea buckthorn juice, concentrating it under the conditions of vacuum degree of 75kpa and temperature of 45°C, and then high-temperature instantaneous sterilization at a sterilization temperature of 115°C and a sterilization time of 5s, and finally spray drying it under the conditions of inlet air temperature of 170°C and outlet air temperature of 80°C.

[0029] The above raw materials sea buckthorn oil microcapsule powder, sea buckthorn freeze-dried powder, sea buckthorn fruit powder, xylitol and silicon dioxide are weighed respectively by weight, first mixed in a mixer with a mixer speed of 8 r / min and a mixing time of 15 min, and then sieved using a sieve with a mesh diameter of 60 mesh to obtain sea buckthorn flash-release direct drinking powder with antioxidant function.

[0030] Example 2

[0031] A sea buckthorn instant-release direct drinking powder with antioxidant function, the raw materials of which include, by weight, 62 parts of sea buckthorn oil microcapsule powder, 20 parts of sea buckthorn freeze-dried powder, 12 parts of sea buckthorn fruit powder, 8 parts of xylitol and 0.3 parts of silicon dioxide.

[0032] The preparation process of the raw material sea buckthorn oil microcapsule powder in the sea buckthorn flash-release direct drinking powder includes: extracting sea buckthorn oil from sea buckthorn pulp by supercritical CO2 extraction, mixing the sea buckthorn oil with sodium caseinate, sodium octenyl succinate starch and mono- and di-glycerides dissolved in distilled water, wherein the sea buckthorn oil, distilled water, sodium caseinate, sodium octenyl succinate starch and mono- and di-glycerides are 25 parts, 63 parts, 7 parts, 10 parts and 8 parts by weight respectively, followed by shearing at a speed of 10,000 r / min for 8 minutes, and then homogenizing at a pressure of 20 MPa, sterilizing at a sterilization temperature of 122°C for 10 seconds after homogenization, and finally spray drying at an inlet air temperature of 175°C and an outlet air temperature of 85°C.

[0033] The preparation process of the raw material sea buckthorn freeze-dried powder in the sea buckthorn flash-release direct drinking powder includes pre-freezing the sea buckthorn fruit at a pre-freezing temperature of -30°C for 18 hours, then breaking the wall at a temperature of 4°C and a rotation speed of 22000r / min for 30 minutes, and then freeze-drying it at a vacuum freeze-drying temperature of -48°C for 24 hours before crushing it.

[0034] The preparation process of the raw material sea buckthorn fruit powder in the sea buckthorn flash-release direct drinking powder includes pulping, crushing and seeding the sea buckthorn fruit, centrifuging at a speed of 4200r / min for 15 minutes to obtain the sea buckthorn juice, concentrating it under the conditions of vacuum degree of 82kpa and temperature of 53°C, and then high-temperature instantaneous sterilization at a sterilization temperature of 120°C and a sterilization time of 10s, and finally spray drying it under the conditions of inlet air temperature of 175°C and outlet air temperature of 85°C.

[0035] The above raw materials sea buckthorn oil microcapsule powder, sea buckthorn freeze-dried powder, sea buckthorn fruit powder, xylitol and silicon dioxide are weighed respectively by weight, first mixed in a mixer with a mixer speed of 14r / min and a mixing time of 18min, and then sieved using a sieve with a mesh diameter of 70 mesh to obtain sea buckthorn flash-release direct drinking powder with antioxidant function.

[0036] Example 3

[0037] A sea buckthorn instant-release direct drinking powder with antioxidant function, the raw materials of which include, by weight, 65 parts of sea buckthorn oil microcapsule powder, 25 parts of sea buckthorn freeze-dried powder, 15 parts of sea buckthorn fruit powder, 10 parts of xylitol and 0.5 parts of silicon dioxide.

[0038] The preparation process of the raw material sea buckthorn oil microcapsule powder in the sea buckthorn flash-release direct drinking powder includes: extracting sea buckthorn oil from sea buckthorn pulp by supercritical CO2 extraction, mixing the sea buckthorn oil with sodium caseinate, sodium octenyl succinate starch and mono- and di-glycerides dissolved in distilled water, wherein the sea buckthorn oil, distilled water, sodium caseinate, sodium octenyl succinate starch and mono- and di-glycerides are 30 parts, 65 parts, 10 parts, 15 parts and 10 parts by weight respectively, followed by shearing at a speed of 10,000 r / min for 10 minutes, and then homogenizing at a pressure of 30 MPa, sterilizing at a sterilization temperature of 135°C for 15 seconds after homogenization, and finally spray drying at an inlet air temperature of 180°C and an outlet air temperature of 90°C.

[0039] The preparation process of the raw material sea buckthorn freeze-dried powder in the sea buckthorn flash-release direct drinking powder includes pre-freezing the sea buckthorn fruit at a pre-freezing temperature of -35°C for 20 hours, then breaking the wall at a temperature of 4°C and a rotation speed of 30,000 r / min for 30 minutes, and then freeze-drying it at a vacuum freeze-drying temperature of -50°C for 24 hours before crushing it.

[0040] The preparation process of the raw material sea buckthorn fruit powder in the sea buckthorn flash-release direct drinking powder includes pulping, crushing and seeding the sea buckthorn fruit, centrifuging at a speed of 4500r / min for 15 minutes to obtain the sea buckthorn juice, concentrating it under the conditions of a vacuum degree of 95kpa and a temperature of 65°C, and then high-temperature instantaneous sterilization at a sterilization temperature of 125°C and a sterilization time of 15s, and finally spray drying it under the conditions of an inlet air temperature of 180°C and an outlet air temperature of 90°C.

[0041] The above raw materials sea buckthorn oil microcapsule powder, sea buckthorn freeze-dried powder, sea buckthorn fruit powder, xylitol and silicon dioxide are weighed respectively by weight, first mixed in a mixer with a mixer speed of 20r / min and a mixing time of 20min, and then sieved using a sieve with a mesh diameter of 80 mesh to obtain sea buckthorn flash-release direct drinking powder with antioxidant function.

[0042] Example 4

[0043] The present embodiment provides a sea buckthorn instant-release drinking powder with antioxidant function and a preparation method thereof. The only difference from Example 1 is that the raw material ratio is different. The raw materials of the sea buckthorn instant-release drinking powder of the present embodiment include, by weight, 60 parts of sea buckthorn oil microcapsule powder, 20 parts of sea buckthorn freeze-dried powder, 12 parts of sea buckthorn fruit powder, 6 parts of xylitol, and 0.1 part of silicon dioxide.

[0044] Example 5

[0045] The present embodiment provides a sea buckthorn instant-release drinking powder with antioxidant function and a preparation method thereof. The only difference from Example 1 is that the raw material ratio is different. The raw materials of the sea buckthorn instant-release drinking powder of the present embodiment include, by weight, 63 parts of sea buckthorn oil microcapsule powder, 22 parts of sea buckthorn freeze-dried powder, 13 parts of sea buckthorn fruit powder, 8 parts of xylitol, and 0.3 parts of silicon dioxide.

[0046] Example 6

[0047] The present embodiment provides a sea buckthorn instant-release drinking powder with antioxidant function and a preparation method thereof. The only difference from Example 1 is that the raw material ratio is different. The raw materials of the sea buckthorn instant-release drinking powder of the present embodiment include, by weight, 65 parts of sea buckthorn oil microcapsule powder, 25 parts of sea buckthorn freeze-dried powder, 15 parts of sea buckthorn fruit powder, 10 parts of xylitol, and 0.5 parts of silicon dioxide.

[0048] Example 7

[0049] The present embodiment provides a sea buckthorn instant-release drinking powder with antioxidant function and a preparation method thereof. The only difference from Example 1 is that the raw material composition is different. The sea buckthorn instant-release drinking powder of the present embodiment does not contain xylitol. The raw materials include, by weight, 65 parts of sea buckthorn oil microcapsule powder, 25 parts of sea buckthorn freeze-dried powder, 15 parts of sea buckthorn fruit powder, and 0.5 parts of silicon dioxide.

[0050] Example 8

[0051] The present embodiment provides a sea buckthorn instant-release drinking powder with antioxidant function and a preparation method thereof. The only difference from Embodiment 1 is that the raw material composition is different. The raw materials of the sea buckthorn instant-release drinking powder of the present embodiment do not contain silicon dioxide. The raw materials include, by weight, 65 parts of sea buckthorn oil microcapsule powder, 25 parts of sea buckthorn freeze-dried powder, 15 parts of sea buckthorn fruit powder, and 10 parts of xylitol.

[0052] Example 9

[0053] The present embodiment provides a sea buckthorn instant-release drinking powder with antioxidant function and a preparation method thereof. The only difference from Example 1 is that the diameter of the sieve used for sieving is different. In the preparation method of the sea buckthorn instant-release drinking powder of the present embodiment, the raw materials are mixed evenly and then sieved using a sieve with a sieve diameter of 70 mesh to obtain the sea buckthorn instant-release drinking powder with antioxidant function.

[0054] Example 10

[0055] The present embodiment provides a sea buckthorn instant-release drinking powder with antioxidant function and a preparation method thereof. The only difference from Example 1 is that the diameter of the sieve used for sieving is different. In the preparation method of the sea buckthorn instant-release drinking powder of the present embodiment, the raw materials are mixed evenly and then sieved using a sieve with a diameter of 80 mesh to obtain the sea buckthorn instant-release drinking powder with antioxidant function.

[0056] Performance testing

[0057] 1. Determination method of seabuckthorn instant-release drinking powder

[0058] 1. Sensory indicators

[0059] The seabuckthorn instant-release drinking powder prepared in Examples 1 to 10 was tested for dissolution time and taste. The experimental results are shown in Table 1.

[0060] Table 1. Sensory index results of seabuckthorn instant-release drinking powder

[0061]

[0062]

[0063] From the results in Table 1, it can be seen that the seabuckthorn instant-release direct drinking powders prepared in Examples 1 to 10 can all be dissolved in the mouth and achieve the instant-release effect within seconds. The dissolution time of Examples 9 and 10 is shorter than that of Example 1, indicating that the solubility of the seabuckthorn instant-release direct drinking powder is related to the particle size. However, the seabuckthorn instant-release direct drinking powder prepared in Example 7 has a poor taste because xylitol is not added, and the seabuckthorn instant-release direct drinking powder prepared in Example 8 has a sticky and granular taste and a longer dissolution time than other examples because the anti-caking agent silicon dioxide is not added. The results show that the seabuckthorn instant-release direct drinking powder obtained by the preparation method of the seabuckthorn instant-release direct drinking powder in this application has excellent instant dissolution effect and taste.

[0064] 2. Physical and chemical indicators

[0065] The seabuckthorn instant-release drinking powder prepared in Examples 1 to 6 was used for the experiment, and the determination was carried out according to the following regulations and process:

[0066] (1) Determination of vitamin C content: in accordance with GB 5009.86;

[0067] (2) Determination of total acid (calculated as citric acid): in accordance with GB 12456;

[0068] (3) Determination of moisture content: in accordance with GB5009.3;

[0069] (4) Determination of ash content: in accordance with GB5009.4;

[0070] (5) Determination of lead: in accordance with GB5009.12;

[0071] (6) Determination of arsenic: in accordance with GB5009.11;

[0072] (7) Determination of copper: in accordance with GB5009.13;

[0073] The experimental results are as follows, see Table 2.

[0074] Table 2. Physical and chemical index results of seabuckthorn instant-release direct drinking powder

[0075]

[0076] As can be seen from Table 2, the seabuckthorn instant-release direct drinking powder prepared in Examples 1 to 6 evaluated by physical and chemical indicators has a high vitamin C content, all greater than 1000 mg / 100 g. Vitamin C, as an important antioxidant, plays an extremely important role in human physiological metabolism, can promote iron absorption, and also has important functions such as detoxification, anti-scurvy, anti-cancer, and regulation of physiological functions of the body. At the same time, the total acid content (calculated as citric acid) of the seabuckthorn instant-release direct drinking powder prepared in Examples 1 to 6 meets my country's food testing standards, and the moisture and ash contents are low, and the contents of heavy metals such as lead, arsenic, and copper also meet national standards. The results show that the seabuckthorn instant-release direct drinking powder obtained by the preparation method of the seabuckthorn instant-release direct drinking powder in this application is of good quality and high nutritional value.

[0077] 3. Microbiological indicators

[0078] The seabuckthorn instant-release drinking powder prepared in Examples 1 to 6 was used for the experiment, and the determination was carried out according to the following regulations and process:

[0079] (1) Determination of total colony count: in accordance with GB 4789.2;

[0080] (2) Determination of coliform group: in accordance with GB 4789.3;

[0081] (3) Determination of mold and yeast: in accordance with GB 4789.15;

[0082] (4) Determination of pathogenic bacteria (Salmonella, Shigella, Staphylococcus aureus): in accordance with GB 4789.4, GB4789.5 and GB 4789.10;

[0083] The experimental results are as follows, see Table 3.

[0084] Table 3. Microbiological index results of seabuckthorn flash-release direct drinking powder

[0085]

[0086] From the results in Table 3, it can be seen that the microbial index test results of the seabuckthorn instant-release direct drinking powder prepared in Examples 1 to 6 evaluated by physical and chemical indicators all meet the detection standards for microbial content in food in my country.

[0087] The seabuckthorn instant-release drinking powder prepared in Examples 1 to 10 was stored at a temperature below 10°C and a storage humidity below 60%, and the agglomeration of the seabuckthorn instant-release drinking powder was evaluated on the last day of the 2nd, 4th, 6th, 8th, 10th and 12th month of storage.

[0088] Table 4. Evaluation results of agglomeration of seabuckthorn flash-release direct drinking powder

[0089]

[0090] Due to the use of anti-caking agent silicon dioxide, the state of sea buckthorn instant-release direct drinking powder can be changed, the viscosity of sea buckthorn instant-release direct drinking powder can be reduced, and it can be made loose, thereby achieving the purpose of preventing sea buckthorn instant-release direct drinking powder from caking. From the results in Table 4, it can be seen that, except for Example 8 in which the anti-caking agent silicon dioxide is not added and Example 7 in which xylitol is not added, the sea buckthorn instant-release direct drinking powder prepared in the other examples in which the anti-caking agent silicon dioxide and xylitol are added can maintain a good state for 12 months, that is, the shelf life of sea buckthorn instant-release direct drinking powder can reach more than 12 months. The sea buckthorn instant-release direct drinking powder prepared in Example 7 without adding xylitol can maintain a good state for 10 months, which is shorter than the time that the sea buckthorn instant-release direct drinking powder prepared in the example in which xylitol and anti-caking agent silicon dioxide are added simultaneously maintains a good state. The reason for this may be that xylitol has the characteristic of being difficult to ferment and is a poor culture medium for microorganisms, so it can extend the shelf life of sea buckthorn instant-release direct drinking powder.

[0091] 3. Determination of Antioxidant Capacity of Seabuckthorn Flash-release Drinking Powder

[0092] The seabuckthorn instant-release drinking powder prepared in Examples 1 to 10 was used to test the HO· scavenging ability, O· 2- ·Scavenging ability test and DPPH·Scavenging ability test, the test results are shown in Table 5:

[0093] Table 5. Results of antioxidant capacity test of seabuckthorn instant-release drinking powder

[0094] HO·Removal rate (%) <![CDATA[O 2- · Clearance rate (%)]]> DPPH·Scavenging rate (%) Vitamin C 75.3 83.7 90.2 Example 1 81.5 88.4 86.4 Example 2 78.2 87.2 85.3 Example 3 78.1 86.5 85.6 Example 4 82.2 89.9 87.0 Example 5 80.1 87.0 86.1 Example 6 79.7 87.5 86.9 Example 7 77.2 85.1 85.6 Example 8 78.5 85.0 85.3 Example 9 82.2 88.2 86.6 Example 10 80.9 87.9 86.2

[0095] As can be seen from Table 5, the seabuckthorn instant-release direct drinking powders prepared in Examples 1 to 10 all exhibited good scavenging activities of hydroxyl radicals, superoxide anion radicals, and DPPH radicals, wherein the hydroxyl radical scavenging rates and superoxide anion radical scavenging rates of the seabuckthorn instant-release direct drinking powders prepared in Examples 1 to 10 were higher than those of vitamin C, while the DPPH radical scavenging rate was slightly lower than that of vitamin C, but both were higher than 85%. The results show that the seabuckthorn instant-release direct drinking powder prepared by the method for preparing the seabuckthorn instant-release direct drinking powder in this application, after mixing the raw materials in a certain proportion, has good antioxidant properties.

[0096] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A seabuckthorn instant-release drinking powder with antioxidant function, characterized in that: The raw materials include, by weight, 60-65 parts of seabuckthorn oil microcapsule powder, 15-25 parts of seabuckthorn freeze-dried powder, 10-15 parts of seabuckthorn fruit powder, 5-10 parts of xylitol, and 0.1-0.5 parts of silicon dioxide.

2. The seabuckthorn instant-release drinking powder with antioxidant function according to claim 1, characterized in that: The seabuckthorn fruit oil microcapsule powder is prepared by mixing seabuckthorn fruit oil with sodium caseinate, sodium starch octenylsuccinate and mono- and di-glycerides dissolved in distilled water, shearing at a speed of 10,000 r / min for 5 to 10 minutes, homogenizing at a pressure of 10 to 30 MPa, sterilizing at a sterilization temperature of 115 to 135°C for 4 to 15 seconds, and finally spray drying at an inlet air temperature of 170 to 180°C and an outlet air temperature of 80 to 90°C.

3. The seabuckthorn instant-release drinking powder with antioxidant function according to claim 2, characterized in that: The seabuckthorn fruit oil, distilled water, sodium caseinate, sodium octenyl succinate starch and mono- and di-fatty acid glycerides are respectively in 20-30 parts, 60-65 parts, 5-10 parts, 5-15 parts and 5-10 parts by weight.

4. The seabuckthorn instant-release drinking powder with antioxidant function according to claim 1, characterized in that: The seabuckthorn freeze-dried powder is obtained by pre-freezing seabuckthorn fruit at a pre-freezing temperature of -25 to -35°C for 15 to 20 hours, then breaking the wall at a temperature of 4°C and a rotation speed of 15,000 to 30,000 r / min for 30 minutes, and then freeze-drying at a vacuum freeze-drying temperature of -45 to -50°C for 24 hours before crushing.

5. The seabuckthorn instant-release drinking powder with antioxidant function according to claim 1, characterized in that: The seabuckthorn fruit powder is prepared by beating and crushing the seabuckthorn fruit to remove the seeds, centrifuging at a rotation speed of 4000-4500 r / min for 15 minutes to obtain seabuckthorn juice, concentrating it under the conditions of a vacuum degree of 75-95 kpa and a temperature of 45-65° C., then performing high-temperature instantaneous sterilization at a sterilization temperature of 115-125° C. for 5-15 seconds, and finally spray drying it under the conditions of an inlet air temperature of 170-180° C. and an outlet air temperature of 80-90° C.

6. A method for preparing the seabuckthorn instant-release drinking powder with antioxidant function as claimed in claims 1 to 5, characterized in that: The raw materials seabuckthorn oil microcapsule powder, seabuckthorn freeze-dried powder, seabuckthorn fruit powder, xylitol and silicon dioxide are weighed respectively by weight, mixed and sieved to obtain seabuckthorn flash-release direct drinking powder.

7. The method for preparing the seabuckthorn instant-release drinking powder with antioxidant function according to claim 6, characterized in that: The mixing is carried out by a mixer, the speed of the mixer is 8-20 r / min, and the mixing time is 15-20 min.

8. The method for preparing the seabuckthorn instant-release drinking powder with antioxidant function according to claim 6, characterized in that: The sieving adopts a sieve with a mesh diameter of 60 to 80 meshes.

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