CN108703340A - A kind of eucommia ulmoides seed oil powder electuary and preparation method thereof - Google Patents

Abstract

The invention discloses a kind of eucommia ulmoides seed oil powder electuary and preparation method thereof, preparation method includes pretreatment of raw material, vacuum microwave humid heat treatment, supercritical extract carries oil, mechanical ball mill activates, super-high-pressure homogenization processing, is concentrated and dried, allotment drying.The method of the present invention first extracts eucommia ulmoides seed oil using Eucommia as raw material from Eucommia；Then it is raw material rationally to utilize the waste seed of bark of eucommia dregs of rice after carrying oil, using technologies such as mechanical ball mill activation, super-high-pressure homogenization processing, spray drying, it prepares rich in small molecular protein, starch and contains a small amount of gutta-percha, while there is the seed dregs of rice activity powder of preferably embedding effect and emulsifiability；Further, it is that wall material passes through micronization processing, vacuum spray drying using eucommia ulmoides seed oil as core material, seed dregs of rice activity powder, can prepare mobility, favorable dispersibility powdered oil, and has reducing blood lipid, blood pressure lowering, promote the development of nervous system, brain and retina, prevents senile dementia and allergy and other effects.

Description

A kind of eucommia seed oil powder granule and preparation method thereof

technical field

The invention belongs to the technical field of powder oil processing, and in particular relates to an eucommia seed oil powder granule and a preparation method thereof.

Background technique

Eucommia ulmoides Oliv., also known as Kapok, Sixian, Sizhong, and Sijinshu, is a deciduous tree of a single family and a single genus. It is known as a "living fossil plant" and is a unique and precious tree species in my country. my country's Eucommia ulmoides is rich in forest resources, accounting for 95% of the world's total. Its wild distribution center is in the central region of China, and it is widely planted in Hunan, Hubei, Henan, Shanxi, Sichuan, Guizhou, Yunnan and other provinces. The planting area has reached 4 million mu. Eucommia has a medicinal history of more than 2,000 years in my country. Both "Shen Nong's Materia Medica" and "Compendium of Materia Medica" listed Eucommia as the top grade, and recorded that "Eucommia ulmoides is purple in color, sweet and pungent in taste, and its nature is damp and flat. ; Cure mainly waist and knee pain, invigorate the vital energy, strengthen the muscles and bones, strengthen the will, remove itching and dampness under the yin, and urinate more than a little; take it for a long time, lighten the body and stand hard work." Modern research shows that Eucommia contains various active substances such as lignans, iridoids, flavonoids, phenylpropanoids, sterols and triterpenes, polysaccharides, antifungal proteins and mineral elements, most of which are It has health benefits and pharmacological activities, such as lowering blood pressure, lowering blood fat, lowering blood sugar, anti-tumor, antibacterial, anti-viral, anti-inflammatory, anti-oxidation, etc. The roots, stems, leaves, flowers, fruits and seeds of Eucommia also contain natural polymer resources - Eucommia gum. Eucommia gum has properties such as high tear resistance, low heat generation, and high damping at medium and high temperatures. It can be used as a production material for high-end green tires, medical equipment, shock-absorbing and sound-absorbing devices, etc. It is the focus and hotspot of Eucommia industry research and development. Eucommia Rubber is expected to be the second natural rubber resource in my country.

Based on the medicinal health effects of Eucommia ulmoides and the discovery of eucommia ulmoides gum, more and more attention has been paid to this unique "living fossil" of eucommia ulmoides, and people's research on eucommia ulmoides is also deepening. Among them, Eucommia ulmoides seed oil is another development focus of Eucommia ulmoides in recent years because it is rich in а-linolenic acid. Eucommia ulmoides seed oil mainly exists in the samara of Eucommia ulmoides, which is rich in linolenic acid, linoleic acid and other polyunsaturated fatty acids, especially the α-linolenic acid content is as high as 60%, and it is a high-quality linolenic acid plant resource. α-linolenic acid and linoleic acid are essential fatty acids for the human body, among which α-linolenic acid is the structural material of the biofilm of various tissues in the body, and is also the precursor for the synthesis of a series of prostaglandins in the human body. After normal people ingest α-linolenic acid from food, a series of metabolites are produced through the action of △6-dehydrogenase and carbon chain elongation enzyme, the most important of which are EPA and DHA. EPA is the precursor of triene prostaglandins (such as PGI3, TXA3) in the body, and DHA is the main component of phospholipids in the nervous system such as the brain and retina. It is based on the effect of α-linolenic acid and linoleic acid that Eucommia ulmoides seed oil has the effects of lowering blood fat and blood pressure, promoting the development of the nervous system, brain and retina, and preventing Alzheimer's disease and allergies. Powdered oil is a kind of powder particles obtained by wrapping the core material with water-soluble wall material. It has good fluidity, emulsification stability and dispersibility, and can facilitate the use, transportation and storage of oil. Therefore, eucommia samara or eucommia seed oil can be used as raw materials to develop eucommia eucommia seed oil powder oil or solid beverage products, so as to fully exert the health care value of eucommia ulmoides seed oil, broaden the use of eucommia ulmoides seed oil and increase its added value.

Generally, powdered oils and fats are generally prepared by spray drying technology using cyclodextrin, gelatin, gum arabic, etc. as wall materials. For example, Ma Chengjin et al. (Research on microencapsulation and antioxidant properties of eucommia samara seed oil, Food Science, 2005, 26(9): 261-264) disclosed a microencapsulation method for eucommia samara seed oil. Seed oil is the core material, and β-cyclodextrin is the wall material. First, heat to dissolve the cyclodextrin and cool it down, then add Eucommia samara seed oil, stir on a magnetic stirrer for a certain period of time, put it in the refrigerator for about 48 hours, and then Suction filtration and vacuum drying. As another example, Ma Chengjin et al. (Research on Microencapsulated Eucommia Seed Oil Prepared by Spray Drying Method, Chinese Journal of Cereals and Oils, 2008, 23 (6): 141-144) disclosed the process of preparing microencapsulated Eucommia ulmoides seed oil by spray drying method, It uses Eucommia ulmoides seed oil as the core material, and the wall material has selected three kinds of composite wall materials: gelatin: maltodextrin 3:2, A-type pure gum: maltodextrin 1:1, gum arabic: maltodextrin 1:1.5 , after mixing and dissolving the emulsifier, water and wall material, adding eucommia seed oil, homogenizing treatment under 30MPa pressure, and spray drying under the conditions of 190°C inlet air temperature and 80-90°C outlet air temperature. Although the above two technical solutions can prepare Eucommia ulmoides seed oil powder oil products, considering the more sufficient and reasonable utilization of eucommia samara, the above technical solutions still have room for improvement.

The wall materials used for oil embedding mainly include proteins, carbohydrates, and hydrocolloids, such as soybean protein, whey protein, modified starch, and gum arabic. The applicant found that the remaining seed meal of extracting peony seed oil from Eucommia ulmoides samara is rich in protein and starch, and there will be a part of eucommia gum. Therefore, the seed meal can be used as a raw material for further processing to prepare a wall that can embed peony seed oil. In this way, the recycling of the residue seed meal after oil extraction is realized, so that the oil, protein, starch, gum, etc. in the eucommia samara are fully and rationally utilized. Moreover, soybean oil and soybean protein prepared by an aqueous enzymatic process have been disclosed in the prior art as a scheme for producing core materials and wall materials for powdered oils. Specifically, Zhang Lei et al. Grease, China Oils and Fats, 2017, 42(3):12-17) discloses the preparation process of soybean powder oil, which utilizes fresh soybeans to clean and pulverize, add alkaline protease, perform enzymolysis, deenzyme, and centrifugation, After centrifugation, the liquid phase rich in soybean oil and soybean protein is taken, and compound emulsifier, maltodextrin, and sodium caseinate are further added, and the liquid phase is subjected to constant temperature and high-speed stirring, high-pressure homogenization, and spray drying to obtain soybean powder oil. Although this process realizes the simultaneous use of soybean oil and soybean protein in soybeans as core material and wall material to prepare powdered oil, it cannot precisely control the ratio of core material soybean oil and wall material soybean protein, and the quality of the final product is not good. Stablize.

Contents of the invention

In view of the above problems, the present invention provides a powder granule of Eucommia ulmoides seed oil and a preparation method thereof, which uses eucommia samara as raw material, first extracts eucommia ulmoides seed oil from eucommia samara; then rationally utilizes the waste Eucommia ulmoides seeds after oil extraction Dried meal is used as raw material, and activated by mechanical ball milling, ultra-high pressure homogeneous treatment, spray drying and other technologies to prepare seed meal active powder rich in small molecular protein, starch and a small amount of eucommia gum, which has good embedding effect and emulsifying performance ; Further, taking Eucommia ulmoides seed oil as the core material and seed dregs active powder as the wall material through ultrafine treatment and vacuum spray drying, powder oil with good fluidity and dispersibility can be prepared, and it has the functions of lowering blood fat, lowering blood pressure, promoting The development of the nervous system, brain and retina, the prevention of Alzheimer's disease and allergies, etc.

A preparation method of Eucommia ulmoides seed oil powder granule, is characterized in that comprising the steps:

1) Raw material pretreatment: drying the eucommia samara until the water content is lower than 12%, peeling off the husk of the eucommia samara and crushing to a particle size of 10-20 mesh to obtain eucommia samara powder;

2) Vacuum microwave heat treatment: Spray water on the surface of the eucommia samara powder obtained in step (1), while stirring continuously until the final moisture content of the eucommia samara powder is 25-35%, then transfer it to the cavity of a microwave oven, and carry out Vacuum microwave treatment controls the moisture content of eucommia samara powder to be 9% to 12%; in the prior art, adopting supercritical extraction to extract oil only needs to dry and pulverize the raw materials, and control the particle size and moisture content of the raw materials (usually the particle size is too small, The permeability of the entrainer becomes poor; the particle size is too large, and the fat in the raw material is not easy to detach; the moisture content is too high, and the moisture content of the finished oil is high; the moisture content is too low, the difficulty and cost of drying increase); general supercritical extraction The residual oil rate of the meal is 2% to 4%. In order to further reduce the residual oil rate of the meal, the extraction process can only be adjusted, but the use of a more stringent extraction process, such as prolonging the extraction time and increasing the extraction pressure, will greatly increase the cost Or difficult to realize; And by above-mentioned steps of the present invention, can make ulmoides ulmoides samara powder, in the vacuum microwave wet-heat treatment process, absorb water and swell earlier (clear water is sprayed on the surface), then by vacuum microwave action, make moisture content form while rapid evaporation Molecular channels and entrainment of oil can improve the yield of subsequent supercritical extraction and reduce the residual oil rate of cake. In Example 2, the residual oil rate data of supercritical extraction after vacuum microwave heat treatment are given in detail.

3) Oil extraction by supercritical extraction: using the Eucommia samara powder obtained in step (2) as a raw material, adopting supercritical extraction to extract oil to obtain Eucommia ulmoides seed oil and Eucommia ulmoides seed meal;

4) Mechanical ball milling activation: take the Eucommia ulmoides seed meal obtained in step (3) and clear water and mix evenly in a mass ratio of 1:3 to 7, and then use a colloid mill to repeatedly homogenize, so that more than 95% of the slurry can pass through a 100-mesh sieve by weight , to obtain seed meal slurry; pass the seed meal slurry through a 100-mesh sieve, collect the under-screened material and add it to a ball mill, perform mechanical ball milling, and then centrifuge to obtain the upper layer of activated seed meal slurry and the lower layer of precipitation; through this step, the seed meal slurry can be made Under the action of mechanical forces such as friction, collision, and impact of mechanical ball milling, the protein and starch in the powder will change the crystal structure and physical and chemical properties, such as decomposing protein into small molecular proteins, destroying the starch lattice structure and denaturing it to form Active substances with better embedding and emulsifying effects;

5) Ultra-high pressure homogenization treatment: pass the activated seed meal slurry obtained in step (4) through a 200-mesh sieve, and take the under-sieve to carry out ultra-high pressure homogenization treatment under the condition of 120-150Mpa, so that the particle size of the activated seed meal slurry is less than 200nm; further through this step, under the action of ultra-high pressure, the particle size of the activated seed meal slurry can reach the nanometer level, and further form active substances with better embedding and emulsifying effects;

6) Concentrating and drying: Concentrating the activated seed meal slurry treated in step (5) to a solid content of 15% to 25%, and then spray drying to make powder to obtain active seed meal powder;

7) Preparation and drying: take the Eucommia ulmoides seed oil obtained in step (3), the seed meal active powder obtained in step (6), and clear water and mix them with high-speed stirring. The particle size is less than 120nm, and then vacuum low-temperature spray drying to make powder; in this step, the embedding of Eucommia ulmoides seed oil by seed meal active powder can be completed through ultra-fine treatment, and Eucommia ulmoides seed oil, seed meal active powder, Clear water forms a nano-scale uniform emulsion, so that the dried product has excellent dispersibility, fluidity and solubility; further, vacuum low-temperature spray drying is used in this step to avoid oxidative damage to linolenic acid in Eucommia seed oil; vacuum low-temperature The preferred conditions for spray drying are: vacuum degree 0.80-0.98MPa, air inlet temperature 80-95°C;

For the eucommia seed oil powder granules prepared by the above steps: raw material pretreatment, vacuum microwave wet heat treatment, supercritical extraction oil extraction, mechanical ball milling activation, ultra-high pressure homogenization treatment, concentrated drying, and preparation and drying, given in Example 3 The data of entrapment rate, solubility, peroxide value, moisture content, etc. of Eucommia ulmoides seed oil powder granules;

In the above steps, the particle size of the activated seed meal slurry in step (5) and the emulsion in step (7) are detected by GB/T19627-2005 "Particle Size Analysis-Photon Correlation Spectroscopy" (PCS method), and the particle size is measured by median particle size. Diameter (D50) means; the detection of moisture content and fixed matter content adopts the normal pressure 105 ℃ drying method.

As a specific technical solution, in the step (2), the vacuum microwave treatment conditions are: vacuum degree 0.90-0.98 MPa, microwave dose 0.25-5 kw/kg.

As a specific technical scheme, in the step (3), the conditions for supercritical extraction are: extraction pressure 30-45MPa, extraction time 1-3h, extraction temperature 42-55°C, separation temperature 28-32°C, _CO Flow rate 25 ~30kg/h.

As a specific technical solution, in the step (4), the technical conditions of the ball milling are: ball mill speed 80-500r/min, ball milling medium filling rate 8%-30%, ball milling time 1-4h.

As a preferred technical solution, in the step (4), the technical conditions of the ball milling are: the speed of the ball mill is 220-300 r/min, the filling rate of the ball milling medium is 10%-12%, and the ball milling time is 2-3 hours.

As a specific technical solution, in the step (7), the ratio by mass of Eucommia ulmoides seed oil, seed meal active powder, and clear water is 2-5:5-10:40-50.

As a specific technical solution, in the step (7), it also includes adding functional ingredients and mixing with Eucommia ulmoides seed oil, seed meal active powder, and clear water; the functional ingredients contain:

1) One or more of kudzu root extract, hawthorn extract, soybean extract, and black tea extract;

2) One or more of vitamin E, rosemary extract, and tea polyphenols; through the above compatibility, on the basis of eucommia seed oil, kudzu root extract, hawthorn extract, soybean Extract and black tea extract can further enhance the blood lipid-lowering effect of the product, so as to produce health care products with auxiliary blood lipid-lowering effect; in addition, adding vitamin E, rosemary extract, and tea polyphenols with antioxidant effects can Prevent the oxidation of eucommia seed oil with high linolenic acid content to prolong the shelf life of the product and maintain the stability of the product's efficacy.

As a specific technical solution, in the step (7), it also includes adding a nutritional fortifier and mixing it with Eucommia ulmoides seed oil, seed meal active powder, and clear water; the nutritional fortifier contains at least: protein, carbohydrates, α-lactalbumin , docosahexaenoic acid, probiotics, nucleotides, lecithin, whey calcium, arachidonic acid; Eucommia seed oil is rich in linolenic acid, which can provide rich linolenic acid for the human body, and protein, carbohydrates , α-lactalbumin, docosahexaenoic acid, probiotics, nucleotides, lecithin, whey calcium, arachidonic acid, etc. are nutritionally active substances required for the growth of infants; therefore, through the above compatibility, This product can be used as food for infants and young children.

As a specific technical solution, in the step (7), it also includes adding microcapsule wall material, emulsifier and Eucommia ulmoides seed oil, seed meal active powder, clear water and mixing; the microcapsule wall material is cyclodextrin, gum arabic , one or more of chitosan; the emulsifier is glyceryl monostearate and sucrose fatty acid ester; To further improve and stabilize the quality of the final product, conventional microcapsule wall materials, emulsifiers, etc. can be used.

Eucommia ulmoides seed oil powder granules prepared by any of the methods described above.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. It should be pointed out that the following embodiments are only explanatory descriptions of the present invention in the form of examples, but the protection scope of the present invention is not limited thereto. Equivalent replacements made by the skilled person to the present invention based on the spirit of the present invention all fall within the protection scope of the present invention.

Example 1

A preparation method of eucommia seed oil powder granules, comprising the steps of:

1) Raw material pretreatment: Dry the eucommia samara with an electric blast drying oven until the water content is lower than 12%, peel off the husk of the eucommia samara, and use a micro-plant pulverizer to crush it to a particle size of 10-20 meshes to obtain the eucommia ulmoides Samara powder;

2) Vacuum microwave heat treatment: Spray water on the surface of the eucommia samara powder obtained in step (1), while stirring continuously until the final water content of the eucommia samara powder is 25-35%, then transfer it to the cavity of the microwave oven, and Vacuum microwave treatment is carried out under the condition of vacuum degree of 0.90-0.98MPa and microwave dose of 1.5kw/kg, and the moisture content of Eucommia samara powder is controlled at 9%-12%;

3) Oil extraction by supercritical extraction: using the eucommia samara powder obtained in step (2) as raw material, using supercritical extraction equipment at an extraction pressure of 42 MPa, an extraction time of 2 hours, an extraction temperature of 45°C, a separation temperature of 30°C, and a _CO flow rate of 25 to The oil was extracted under the condition of 30kg/h to obtain eucommia seed oil and eucommia seed meal; after testing, the peroxidation value of the obtained eucommia seed oil was 1.23mmol/kg, and the acid value was 0.18mg/g; the protein content in eucommia ulmoides seed meal was 36.53 %, containing 18.32% starch;

4) Mechanical ball milling activation: take the Eucommia ulmoides seed meal obtained in step (3) and clear water and mix evenly in a mass ratio of 1:3 to 7, and then use a colloid mill to repeatedly homogenize, so that more than 95% of the slurry can pass through a 100-mesh sieve by weight , to obtain the seed meal slurry; pass the seed meal slurry through a 100-mesh sieve, collect the undersieve and put it into the ball mill, and perform mechanical grinding at a ball mill speed of 220-300r/min, a ball milling medium filling rate of 10%-12%, and a ball milling time of 2-3h. Ball milling, followed by centrifugation, to obtain the upper activated seed meal slurry and the lower sediment;

5) Ultra-high pressure homogenization treatment: pass the activated seed meal slurry obtained in step (4) through a 200-mesh sieve, take the under-sieve and use a nano collider to perform ultra-high pressure homogenization treatment under the condition of 120-150Mpa, so that the activated seed meal The particle size of the meal slurry is less than 200nm;

6) Concentration and drying: Concentrate the activated seed meal slurry treated in step (5) to a solid content of 15% to 25%, and then spray dry and make powder under the condition of an inlet air temperature of 160 to 185°C to obtain seed Meal active powder;

7) Deployment and drying: take the eucommia seed oil obtained in step (3), the seed meal active powder obtained in step (6), and clear water and mix them with high-speed stirring, and then use a nano collider to carry out ultrafine Under the condition of 90℃, carry out vacuum low-temperature spray drying to make powder;

In the above steps, the main raw material Eucommia ulmoides Samara was provided by Xiangxi Laodi Biological Co., Ltd.; the main equipment: miniature plant pulverizer, FZ102 type, Tianjin Test Instrument Co., Ltd.; electric blast drying oven, 101-2AB type, Tianjin Test Instrument Co., Ltd.; supercritical extraction equipment, model HA420-40-96, Nantong Huaan Supercritical Extraction Co., Ltd.; nano collider, 20/150D type, Langfang General Machinery Manufacturing Co., Ltd.; spray dryer , SD-04 type, Changsha Hailing Biotechnology Co., Ltd.;

In the above steps, the particle size of the activated seed meal slurry in step (5) and the emulsion in step (7) are detected by GB/T19627-2005 "Particle Size Analysis-Photon Correlation Spectroscopy" (PCS method), and the particle size is measured by median particle size. The diameter (D50) is indicated; the detection of moisture content and fixed substance content adopts the drying method at 105 °C under normal pressure; the determination of peroxide value adopts the method of GB/T 5538; the determination of acid value adopts the method of GB/T 5530; protein content Determination of micro-Kjeldahl method; determination of starch content using the method of GB/T 5009.9.

Example 2

Determination of the effect of vacuum microwave heat treatment on the residual oil rate of supercritical extraction.

1. Preparation of eucommia seed meal

Vacuum microwave wet heat treatment group: adopt the method of Example 1, take the Eucommia ulmoides seed meal obtained after supercritical extraction and oil extraction, and measure the residual oil rate;

Conventional method control group: adopt the method of Example 1, but without vacuum microwave heat treatment, take the Eucommia ulmoides seed meal obtained after supercritical extraction to measure the residual oil rate.

2. Determination of residual oil rate

Three samples were taken from each group for testing, and the residual oil rate was determined by Soxhlet extraction method.

3. Analysis of results

Table 1 Effect of vacuum microwave heat treatment on the residual oil rate of supercritical extraction

It can be known from Table 1 that, by adopting the method of the present invention, after the eucommia samara powder is first subjected to vacuum microwave heat treatment, the residue of eucommia ulmoides seed meal after supercritical extraction has a lower residual oil rate.

Example 3

Determination of indicators such as embedding rate, fluidity, solubility, peroxide value, moisture content and the like of the eucommia seed oil powder granule of the present invention.

1. Determination of embedding rate

Embedding rate=(1-surface oil content/total oil content)×100%

Determination of surface oil content of eucommia seed oil powder granules: using petroleum ether as a solvent, accurately weigh 5.0g eucommia eucommia seed oil powder granules, add 120mL petroleum ether in three times, shake fully each time, filter and combine the filtrates, and the filtrates are reduced After pressing and concentrating, the quality of the obtained oil is the surface oil content of the eucommia seed oil powder granule.

Determination of the total oil content of eucommia seed oil powder granules: use anhydrous ether as a solvent, accurately weigh 5.0 g of eucommia eucommia seed oil powder granules, add 150-180 mL of anhydrous ether, extract by Soxhlet for 4-6 hours, collect anhydrous ether under reduced pressure Distillation, the quality of the obtained oil is the total oil content of the eucommia seed oil powder granule.

2. Solubility

Take 1g of eucommia seed oil powder granule (m ₁ ) in a 50mL beaker, add 10mL of distilled water (25°C), start timing with a stopwatch for 60s, immediately take 1mL of eucommia ulmoides seed oil powder granule in an aluminum box with constant weight , dried in an oven at 105±2°C for 4 hours, weighed (m ₂ ), and then calculated its solubility according to the following formula, while using commercially available milk powder for comparison.

In the formula:

m ₁ , mass of eucommia seed oil powder granule, g;

m ₂ , mass of eucommia seed oil powder granule after rehydration and drying, g.

3. Determination of fluidity

Fix the funnel and keep it vertical. The height of the funnel mouth is about 8cm from the tabletop. Place a white paper on the tabletop. Add 50g Eucommia ulmoides seed oil powder granule from the funnel. Measure the diameter of the bottom of the cone formed by free falling on the white paper. To determine the size of its mobility. At the same time, compared with commercially available milk powder, the larger the diameter, the better the fluidity.

4. Determination of peroxide value and water content

The peroxide value of Eucommia ulmoides seed oil powder granule was determined according to the method of GB/T 5538; the water content was dried under normal pressure at 105°C.

5. Measurement results

Table 2 Embedding rate, fluidity, solubility, peroxide value, water content of Eucommia ulmoides seed oil powder granule of the present invention

project commercial milk powder Eucommia ulmoides seed oil powder granule of the present invention Embedding rate/% - 86.4 Solubility/% 86.8 78.9 Liquidity/cm 9.86 9.72 Peroxide value/(mmol/kg) - 1.38 Moisture content/% - 6.75

As can be seen from Table 2, the embedding rate of Eucommia ulmoides seed oil powder granule of the present invention is 86.4%, which is at a relatively high level, indicating that the active powder of seed meal activated by mechanical ball milling and ultra-high pressure homogenization has a better embedding effect; The fluidity of the eucommia seed oil powder granule of the present invention is 9.72 cm, which is not much different from the commercially available milk powder, while the solubility is 78.8%, which is slightly lower than the commercially available milk powder; in addition, the peroxide value of the eucommia ulmoides seed oil powder granule of the present invention is relatively low , was 1.38mmol/kg, indicating that the oxidative deterioration of eucommia seed oil can be effectively inhibited by embedding eucommia ulmoides seed oil in seed meal active powder and vacuum low-temperature spray drying.

Claims (10)

1. a preparation method of eucommia seed oil powder granule, is characterized in that comprising the steps: 1) Raw material pretreatment: drying the eucommia samara until the water content is lower than 12%, peeling off the husk of the eucommia samara and crushing to a particle size of 10-20 mesh to obtain eucommia samara powder; 2) Vacuum microwave heat treatment: Spray water on the surface of the eucommia samara powder obtained in step (1), while stirring continuously until the final moisture content of the eucommia samara powder is 25-35%, then transfer it to the cavity of a microwave oven, and carry out Vacuum microwave treatment to control the moisture content of eucommia samara powder to 9% to 12%; 3) Oil extraction by supercritical extraction: using the Eucommia samara powder obtained in step (2) as a raw material, adopting supercritical extraction to extract oil to obtain Eucommia ulmoides seed oil and Eucommia ulmoides seed meal; 4) Mechanical ball milling activation: take the Eucommia ulmoides seed meal obtained in step (3) and clear water and mix evenly in a mass ratio of 1:3 to 7, and then use a colloid mill to repeatedly homogenize, so that more than 95% of the slurry can pass through a 100-mesh sieve by weight , to obtain a seed meal slurry; pass the seed meal slurry through a 100-mesh sieve, collect the under-sieve material and add it to a ball mill, perform mechanical ball milling, and then centrifuge to obtain the activated seed meal slurry in the upper layer and the sediment in the lower layer; 5) Ultra-high pressure homogenization treatment: pass the activated seed meal slurry obtained in step (4) through a 200-mesh sieve, and take the under-sieve to carry out ultra-high pressure homogenization treatment under the condition of 120-150Mpa, so that the particle size of the activated seed meal slurry is less than 200nm; 6) Concentrating and drying: Concentrating the activated seed meal slurry treated in step (5) to a solid content of 15% to 25%, and then spray drying to make powder to obtain active seed meal powder; 7) Preparation and drying: take the Eucommia ulmoides seed oil obtained in step (3), the seed meal active powder obtained in step (6), and clear water and mix them with high-speed stirring. The particle size is less than 120nm, and then vacuum low-temperature spray drying to make powder. 2. a kind of Eucommia ulmoides seed oil powder granule as claimed in claim 1, is characterized in that in described step (2), the condition of vacuum microwave treatment is: vacuum degree is 0.90～0.98MPa, microwave dosage is 0.25～5kw/ kg. 3. a kind of eucommia seed oil powder granule as claimed in claim 1, it is characterized in that in described step (3), the condition of supercritical extraction is: extraction pressure 30～45MPa, extraction time 1～3h, extraction temperature 42 ～55℃, separation temperature 28～32℃, CO ₂ flow rate 25～30kg/h. 4. a kind of Eucommia ulmoides seed oil powder granule as claimed in claim 1, is characterized in that in described step (4), the process condition of ball mill is: ball mill rotating speed 80～500r/min, ball mill medium filling rate 8%～30 %, ball milling time 1 ~ 4h. 5. A kind of Eucommia ulmoides seed oil powder granule as claimed in claim 4, is characterized in that in described step (4), the process condition of ball mill is: ball mill rotating speed 220～300r/min, ball mill medium filling rate 10%～12 %, ball milling time 2 ~ 3h. 6. a kind of eucommia seed oil powder granule as claimed in claim 1, is characterized in that in described step (7), the ratio by mass of eucommia seed oil, seed meal active powder, clear water is 2～5:5～ 10:40-50. 7. a kind of eucommia seed oil powder granule as claimed in claim 1, is characterized in that in described step (7), also comprises adding functional ingredient and mixes with eucommia seed oil, seed dregs active powder, clear water; Said functional ingredient contain: 1) One or more of kudzu root extract, hawthorn extract, soybean extract, and black tea extract; 2) One or more of vitamin E, rosemary extract, and tea polyphenols. 8. a kind of eucommia seed oil powder granule as claimed in claim 1, is characterized in that in described step (7), also comprises adding nutrition enhancer and mixes with eucommia seed oil, seed dregs active powder, clear water; The fortifier contains at least: protein, carbohydrates, α-lactalbumin, docosahexaenoic acid, probiotics, nucleotides, lecithin, whey calcium, and arachidonic acid. 9. a kind of eucommia ulmoides seed oil powder granule as claimed in claim 1, is characterized in that in described step (7), also comprises adding microcapsule wall material, emulsifier and eucommia ulmoides seed oil, seed dregs active powder, clear water mix ; The microcapsule wall material is one or more of cyclodextrin, gum arabic, and chitosan; the emulsifier is glycerol monostearate, sucrose fatty acid ester. 10. The Eucommia ulmoides seed oil powder granule prepared by any one of claims 1-9.