Camellia-seed oil and medium-chain triglyceride compounded high-energy meal replacement powder and preparation method thereof

Abstract

The invention relates to the technical field of food preparation, in particular to camellia-seed oil and medium-chain triglyceride compounded high-energy meal replacement powder and a preparation method thereof, and the camellia-seed oil and medium-chain triglyceride compounded high-energy meal replacement powder is composed of camellia-seed oil micro-capsule powder, nano-emulsified medium-chain triglyceride, a resistant dextrin graft and the like; camellia seed oil is included by carboxymethyl-beta-cyclodextrin, and medium chain triglyceride forms a liquid crystal emulsion of less than 80nm; the feed also contains Maillard reaction whey protein, double-layer embedded probiotics, ferulic acid modified chitosan oligosaccharide and other components. All the raw materials are subjected to embedding, grafting, modifying and mixing processes to prepare the feed, and the feed has the functions of nutrition protection and efficient absorption. Through embedding, nano-emulsification and other technologies, the grease stability and the survival rate of probiotics are improved, and energy release is accelerated; various components are modified, so that the oxidation resistance and the digestion and absorption rate are enhanced, nutrition balance and function synergy are realized, and the health-care food is suitable for various groups of people.

Description

Technical Field

[0001] The present invention relates to the technical field of food preparation, and in particular to a high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides and a preparation method thereof. Background Art

[0002] With rising health awareness and the prevalence of a fast-paced lifestyle, high-energy meal replacement powders are widely used as convenient nutritional supplements in fitness, medical rehabilitation, and outdoor work. However, existing products have significant deficiencies in nutritional balance, functional durability, and digestion and absorption efficiency. Ordinary meal replacement powders often lose flavor due to oil oxidation and rancidity, and probiotics are easily inactivated in the acidic environment of the stomach, making it difficult to exert their intestinal regulatory effects. At the same time, some products, in pursuit of high energy density, excessively add a single ingredient, resulting in an imbalance in the ratio of dietary fiber and vitamins. Long-term consumption can easily lead to metabolic problems.

[0003] Traditional oil encapsulation techniques often use ordinary starch or gelatin, resulting in poor microcapsule structure stability and inability to withstand high temperature and high humidity environments. This can cause functional oils like camellia oil to be released during storage, resulting in a rancid odor and reduced nutritional value. While medium-chain triglycerides offer rapid energy delivery, they are prone to crystal transformation when unprocessed, affecting product taste and dispersibility. Furthermore, probiotic encapsulation often relies on a single sodium alginate system, which has low dissolution and release efficiency in simulated intestinal environments, making it difficult to achieve the required viable bacterial count.

[0004] In recent years, new technologies such as nanoemulsification and the Maillard reaction have begun to be applied to the meal replacement market, but limitations remain. Existing products lack multi-ingredient synergistic design. For example, antioxidants lack adequate spatial separation from oils, preventing effective oxidation inhibition. Complex nutrients, lacking targeted carriers, are prone to interactions within the body, reducing bioavailability. Therefore, there is an urgent need to develop a high-energy meal replacement powder and its preparation process that combines efficient nutrient protection, precise functional release, and excellent palatability. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides and a preparation method thereof.

[0007] (2) Technical solution

[0008] A high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides is prepared from the following raw materials in parts by weight: 20-30 parts of camellia seed oil microcapsule powder, which is prepared by molecular inclusion reaction between camellia seed oil and carboxymethyl-β-cyclodextrin, wherein the carboxymethyl-β-cyclodextrin has a degree of substitution of 0.8-1.2 and an inclusion rate of ≥90%; 15-25 parts of medium-chain triglycerides, which is nanoemulsified to form a stable emulsion with a particle size of 50-100 nm; 10-15 parts of resistant dextrin, with trehalose grafted on its surface to form a complex carbohydrate; and 8-12 parts of concentrated whey protein, which is grafted with glucose via a Maillard reaction, with a grafting degree of 15-20%.

[0009] 3-5 parts of composite probiotic freeze-dried powder are embedded in sodium alginate-chitosan double-layer microspheres, wherein the composite probiotic freeze-dried powder consists of Lactobacillus acidophilus, Lactobacillus plantarum, and Bifidobacterium longum, and the live bacteria ratio is 3:2:1; 2-4 parts of composite vitamin and mineral package are prepared by liposome encapsulation process; 1-3 parts of chitosan oligosaccharide modified with ferulic acid-γ-polyglutamic acid is prepared by ternary grafting reaction of ferulic acid, γ-polyglutamic acid and chitosan oligosaccharide; 0.5-1.5 parts of konjac gum are compounded with xanthan gum in a ratio of 1:1 to form a synergistic gel; 0.5-1 part of oligofructose is surface-loaded with zinc ions to form a complex.

[0010] Preferably, 0.5-1 portion of black garlic extract is also included, wherein the extract contains alliin ≥1.5% and S-allylcysteine ​​≥0.8%, and is spray-dried to prepare micropowder with a particle size of 20-50 μm.

[0011] Preferably, it also comprises 0.3-0.8 parts of bamboo leaf flavonoids-phospholipid complex, which is prepared by ultrasound assistance, has an encapsulation rate of ≥85% and a particle size of 100-200 nm.

[0012] Preferably, 0.2-0.5% of phosphatidylserine is added to the medium-chain triglyceride emulsion and a liquid crystal structure is formed by high-pressure homogenization.

[0013] Preferably, the sodium alginate-chitosan microspheres of the composite probiotic freeze-dried powder have a particle size of 50-100 μm, a wall thickness of 5-8 μm, and a survival rate of ≥80% in a gastric acid environment for 3 hours.

[0014] Preferably, the ferulic acid-γ-polyglutamic acid modified chitosan oligosaccharide has a degree of substitution of 0.4-0.6 and a molecular weight of 4000-6000 Da.

[0015] Preferably, the method for preparing the high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides comprises the following steps:

[0016] S1: Prepare a 25% aqueous solution of carboxymethyl-β-cyclodextrin, add camellia seed oil at a mass ratio of 1:4 at 50°C, stir for 2.5 hours, refrigerate for 12 hours, centrifuge, and freeze-dry to obtain microcapsule powder;

[0017] S2: Resistant dextrin and trehalose were subjected to dry heat reaction at 120°C and pH 7.5 for 3 hours to obtain a grafted product;

[0018] S3: whey protein concentrate and glucose are reacted in a mass ratio of 1:0.2 at 60°C and 75% humidity for 48 hours to produce a Maillard product;

[0019] S4: Put all the raw materials into a three-dimensional mixer, mix at 60r / min for 25 minutes, grind them into 100-200 mesh through ultrafine grinding, and pack them in nitrogen.

[0020] Preferably, the medium-chain triglyceride emulsion is prepared by mixing medium-chain triglycerides, phosphatidylserine, and water in a mass ratio of 3:1:6, and homogenizing under a high pressure of 110 MPa for three times to form a nanoemulsion.

[0021] Preferably, the composite probiotics embedding step is: sodium alginate solution and probiotics are mixed, calcium chloride solution is added dropwise to form microspheres, and then immersed in chitosan solution for cross-linking, and freeze-dried to obtain double-layer microspheres.

[0022] Preferably, the preparation steps of the ferulic acid-γ-polyglutamic acid modified chitosan oligosaccharide are: dissolving chitosan oligosaccharide, γ-polyglutamic acid and ferulic acid in a molar ratio of 1:1.5:1.2 in MES buffer, activating with EDC / NHS, reacting at room temperature for 24 hours, and dialyzing and freeze-drying.

[0023] (3) Beneficial technical effects

[0024] Compared with the existing technology, the beneficial effects of the present invention are:

[0025] 1. Camellia seed oil is encapsulated with carboxymethyl-β-cyclodextrin, achieving an inclusion rate exceeding 90%, effectively isolating it from oxygen and moisture. The peroxide value remains below 0.05g / 100g during its four-week shelf life, significantly enhancing flavor stability. Medium-chain triglycerides are nanoemulsified and modified with phosphatidylserine to form a liquid crystal emulsion with a particle size of less than 80nm, enhancing dispersibility and accelerating energy release, making it more adaptable to high-intensity metabolic demands.

[0026] 2. The compound probiotics utilize a sodium alginate-chitosan double-layer encapsulation, resulting in a three-hour survival rate exceeding 80% in gastric acid, an improvement compared to traditional single-layer encapsulation. They also offer controlled release within the intestine, effectively regulating microecological balance. Chitosan oligosaccharides modified with ferulic acid-γ-polyglutamic acid possess both antioxidant and absorption-enhancing properties, increasing vitamin C retention and mineral bioavailability. Through processes such as grafting trehalose onto resistant dextrin and Maillard modification of whey protein, the product achieves a digestibility and absorption rate exceeding 92%, while also improving taste and sweetness without the need for added sucrose.

[0027] 3. Technologies such as liposome encapsulation of vitamins and high-pressure homogenization to form nanoemulsions ensure stable and non-interfering nutrients. This meal replacement powder synergizes energy supply, intestinal health, and antioxidant functions, making it suitable for fitness enthusiasts, postoperative recovery patients, and outdoor workers, with significant market application value and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a flow chart of a method for preparing a high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides proposed in the present invention;

[0029] Figure 2 1. It is a line comparison chart of gastric acid survival rate and digestion and absorption rate of probiotics in Example and Comparative Example;

[0030] Figure 3 This is a bar chart comparing the antioxidant capacity of the examples and the comparative examples;

[0031] Figure 4 It is a broken line comparison chart of dispersion stability of Example and Comparative Example. DETAILED DESCRIPTION

[0032] according to Figures 1 to 4 , the specific implementation of the present invention is as follows:

[0033] Example 1 Raw material formula (by weight)

[0034] 25 parts of camellia seed oil microcapsule powder, carboxymethyl-β-cyclodextrin substitution degree 1.0, inclusion rate 92%;

[0035] 20 parts of medium chain triglycerides, 65% C8 content, 80nm particle size emulsion;

[0036] 12 parts of resistant dextrin, DE value 10, grafted trehalose;

[0037] 10 parts of concentrated whey protein, Maillard reaction grafting degree 15-20%;

[0038] 4 portions of compound probiotic freeze-dried powder, Lactobacillus acidophilus: Lactobacillus plantarum: Bifidobacterium longum = 3:2:1, viable count 1.2×10 10 CFU / g;

[0039] 3 servings of multivitamin and mineral packets, liposome-encapsulated;

[0040] 2 parts of ferulic acid-γ-polyglutamic acid modified chitosan oligosaccharide, degree of substitution 0.5, molecular weight 5000Da;

[0041] 1 part konjac gum;

[0042] 1 part xanthan gum;

[0043] 0.8 parts of oligofructose, loaded with zinc ion complex;

[0044] Black garlic extract 0.7 parts, alliin ≥1.5%, S-allylcysteine ​​≥0.8%;

[0045] 0.5 parts of bamboo leaf flavonoids-phospholipid complex, encapsulation efficiency ≥85%, particle size 100-200nm;

[0046] Example 1 Preparation steps

[0047] S1: Add 25 g of carboxymethyl-β-cyclodextrin (degree of substitution 1.0) to 100 mL of deionized water and stir at 50°C and 250 rpm to dissolve; slowly add 6.25 g of camellia seed oil and continue stirring for 2.5 hours; refrigerate at 4°C for 12 hours, centrifuge at 4000 rpm for 15 minutes, and collect the precipitate; then freeze-dry at -50°C and 10 Pa for 24 hours to obtain camellia seed oil microcapsule powder.

[0048] S2: 20 g of medium-chain triglycerides, 0.06 g of phosphatidylserine and 40 g of deionized water were mixed and ultrasonically dispersed for 5 minutes; the mixture was homogenized three times using a 110 MPa high-pressure homogenizer to obtain an emulsion with a particle size of 80 nm.

[0049] S3: Mix 12 g of resistant dextrin and 6 g of trehalose, adjust the moisture content to 15%, and dry-heat the mixture at 120°C and pH 7.5 for 3 hours. After cooling, grind the mixture through an 80-mesh sieve.

[0050] S4: 10 g of concentrated whey protein and 2 g of glucose were dissolved in 50 mL of deionized water and the pH was adjusted to 7.0. The mixture was reacted at 60° C. and 75% humidity for 48 hours and freeze-dried and crushed.

[0051] S5: Prepare 2% sodium alginate solution and mix it with the composite probiotic solution in a 1:1 ratio; use a syringe to drop 2% calcium chloride solution to form 80 μm microspheres; immerse in 1% chitosan solution for cross-linking for 30 minutes, and freeze-dry.

[0052] S6: Dissolve 1 g of chitosan oligosaccharide (molecular weight 5000 Da), 1.5 g of γ-polyglutamic acid, and 1.2 g of ferulic acid in 50 mL of MES buffer (pH 5.5); add 0.5 g of EDC and 0.3 g of NHS, and react at room temperature in the dark for 24 hours; dialyze (molecular weight cutoff 3500 Da) for 48 hours and lyophilize.

[0053] S7: Put the above product and the remaining raw materials into a three-dimensional motion mixer, mix at 60 r / min for 25 minutes; ultrafine grind to 150 mesh, and pack with nitrogen.

[0054] Example 2 Raw material formula (by weight)

[0055] 30 parts of camellia seed oil microcapsule powder, carboxymethyl-β-cyclodextrin substitution degree 1.2, inclusion rate 94%;

[0056] 15 parts of medium chain triglycerides, 70% C8 content, 60nm particle size emulsion;

[0057] 15 parts of resistant dextrin, DE value 8, grafted trehalose;

[0058] 8 parts of concentrated whey protein, Maillard reaction grafting degree 15-20%;

[0059] 5 portions of compound probiotic freeze-dried powder, Lactobacillus acidophilus: Lactobacillus plantarum: Bifidobacterium longum = 3:2:1, viable count 1.5×10 10 CFU / g;

[0060] 4 servings of multivitamin and mineral packets, liposome-encapsulated;

[0061] 3 parts of chitosan oligosaccharide modified with ferulic acid-γ-polyglutamic acid, degree of substitution 0.6, molecular weight 6000Da;

[0062] 1.5 parts konjac gum

[0063] 1.5 parts xanthan gum

[0064] 1 part of oligofructose, loaded with zinc ion complex;

[0065] 1 part of black garlic extract, alliin ≥1.5%, S-allylcysteine ​​≥0.8%;

[0066] 0.8 parts of bamboo leaf flavonoids-phospholipid complex, encapsulation efficiency ≥85%, particle size 100-200nm;

[0067] Example 2 Preparation steps

[0068] S1: Add 30 g of carboxymethyl-β-cyclodextrin (degree of substitution 1.2) to 100 mL of deionized water and stir at 55°C and 300 rpm to dissolve; slowly add 7.5 g of camellia seed oil and continue stirring for 3 hours; refrigerate at 4°C for 12 hours, centrifuge at 4000 rpm for 15 minutes, and collect the precipitate; freeze-dry at -50°C and 10 Pa for 24 hours to obtain camellia seed oil microcapsule powder.

[0069] S2: 15 g of medium-chain triglycerides, 0.045 g of phosphatidylserine and 30 g of deionized water were mixed and ultrasonically dispersed for 5 minutes; the mixture was homogenized three times using a 120 MPa high-pressure homogenizer to obtain an emulsion with a particle size of 60 nm.

[0070] S3: Mix 15 g of resistant dextrin and 7.5 g of trehalose, adjust the moisture content to 18%, and dry-heat the mixture at 125°C and pH 7.5 for 2.5 hours. After cooling, grind the mixture through an 80-mesh sieve.

[0071] S4: 8 g of concentrated whey protein and 1.6 g of glucose were dissolved in 40 mL of deionized water and the pH was adjusted to 7.0. The mixture was reacted at 60° C. and 75% humidity for 48 hours and freeze-dried and crushed.

[0072] S5: Prepare 2% sodium alginate solution and mix it with the composite probiotic solution in a 1:1 ratio; use a syringe to drop 2% calcium chloride solution to form 80 μm microspheres; immerse in 1.5% chitosan solution for cross-linking for 30 minutes, and freeze-dry.

[0073] S6: Dissolve 1.5 g of chitosan oligosaccharide (molecular weight 6000 Da), 2.25 g of γ-polyglutamic acid, and 1.8 g of ferulic acid in 75 mL of MES buffer (pH 5.5); add 0.75 g of EDC and 0.45 g of NHS, and react at room temperature in the dark for 24 hours; dialyze (molecular weight cutoff 3500 Da) for 48 hours and lyophilize.

[0074] S7: Put the above product and the remaining raw materials into a three-dimensional motion mixer, mix at 60 r / min for 30 minutes; ultrafine grind to 200 mesh, and pack with nitrogen.

[0075] Example 3 Raw material formula (by weight)

[0076] 20 parts of camellia seed oil microcapsule powder, carboxymethyl-β-cyclodextrin substitution degree 0.8, inclusion rate 88%;

[0077] 25 parts of medium chain triglycerides, 60% C8 content, 90nm particle size emulsion;

[0078] 10 parts of resistant dextrin, DE value 12, grafted trehalose;

[0079] 12 parts of concentrated whey protein, Maillard reaction grafting degree 15-20%;

[0080] 3 parts of compound probiotic freeze-dried powder, Lactobacillus acidophilus: Lactobacillus plantarum: Bifidobacterium longum = 3:2:1, viable count 0.9×10 10 CFU / g;

[0081] 2 servings of multivitamin and mineral packets, liposome-encapsulated;

[0082] 1 part of ferulic acid-γ-polyglutamic acid modified chitosan oligosaccharide, degree of substitution 0.4, molecular weight 4000Da;

[0083] 0.5 part of konjac gum;

[0084] 0.5 parts of xanthan gum;

[0085] 0.5 parts of oligofructose, loaded with zinc ion complex;

[0086] Black garlic extract 0.5 parts, alliin ≥1.5%, S-allylcysteine ​​≥0.8%;

[0087] 0.3 parts of bamboo leaf flavonoids-phospholipid complex, encapsulation efficiency ≥85%, particle size 100-200nm;

[0088] Example 3 Preparation steps

[0089] S1: Add 20 g of carboxymethyl-β-cyclodextrin (degree of substitution 0.8) to 100 mL of deionized water and stir at 45°C and 200 rpm to dissolve; slowly add 5 g of camellia seed oil and continue stirring for 2 hours; refrigerate at 4°C for 12 hours, centrifuge at 4000 rpm for 15 minutes, and collect the precipitate; freeze-dry at -50°C and 10 Pa for 24 hours to obtain camellia seed oil microcapsule powder.

[0090] S2: 25 g of medium-chain triglycerides, 0.125 g of phosphatidylserine and 50 g of deionized water were mixed and ultrasonically dispersed for 5 minutes; the mixture was homogenized three times using a 110 MPa high-pressure homogenizer to obtain an emulsion with a particle size of 90 nm.

[0091] S3: Mix 10 g of resistant dextrin and 5 g of trehalose, adjust the moisture content to 12%, and dry-heat the mixture at 115°C and pH 7.5 for 3.5 hours. After cooling, grind the mixture through an 80-mesh sieve.

[0092] S4: 12 g of concentrated whey protein and 2.4 g of glucose were dissolved in 60 mL of deionized water and the pH was adjusted to 7.0. The mixture was reacted at 60° C. and 75% humidity for 48 hours and freeze-dried and crushed.

[0093] S5: Prepare 2% sodium alginate solution and mix it with the composite probiotic solution in a 1:1 ratio; add 1.5% calcium chloride solution with a syringe to form 60 μm microspheres; immerse in 1% chitosan solution for cross-linking for 30 minutes and freeze-dry.

[0094] S6: Dissolve 0.5 g of chitosan oligosaccharide (molecular weight 4000 Da), 0.75 g of γ-polyglutamic acid, and 0.6 g of ferulic acid in 25 mL of MES buffer (pH 5.5); add 0.25 g of EDC and 0.15 g of NHS, and react at room temperature in the dark for 24 hours; dialyze (molecular weight cutoff 3500 Da) for 48 hours and lyophilize.

[0095] S7: Put the above product and the remaining raw materials into a three-dimensional motion mixer, mix at 80 r / min for 25 minutes; ultrafine grind to 100 mesh, and pack with nitrogen.

[0096] Comparative Example Raw Material Formula (by weight)

[0097] 25 parts of unencapsulated camellia seed oil;

[0098] Medium chain triglycerides 20 parts;

[0099] 12 parts of ordinary dextrin;

[0100] 10 servings of unmodified whey protein concentrate;

[0101] 4 portions of unencapsulated composite probiotic powder;

[0102] 3 ordinary vitamin and mineral packets;

[0103] 2 parts of unmodified chitosan oligosaccharide;

[0104] 2 parts of single konjac gum;

[0105] 0.8 parts of oligofructose;

[0106] Comparative Example Preparation Steps

[0107] All raw materials were put into a mixer, mixed at 80 r / min for 30 minutes, and packaged in a conventional manner without ultrafine grinding.

[0108] The core functional indicators of the embodiments and comparative examples are shown in the following table:

[0109] Table 1

[0110] Test items Example 1 Example 2 Example 3 Comparative Example Probiotic gastric acid survival rate (%) 85 88 82 35 Antioxidant capacity (ORAC) (μmol TE / g) 2800 3200 2500 1200 Digestion and absorption rate (%) 92 94 90 78

[0111] The stability indicators of the embodiments and comparative examples are shown in the following table:

[0112] Table 2

[0113] Test items Example 1 Example 2 Example 3 Comparative Example 4-week shelf life viable bacteria count <![CDATA[8.5×10 9 CFU / g]]> <![CDATA[1.0×10 10 CFU / g]]> <![CDATA[6.8×10 9 CFU / g]]> <![CDATA[1.2×10 8 CFU / g]]> Dispersion stability (48h) 98％ 99％ 96％ 72％

[0114] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides, characterized in that: The invention is prepared from the following raw materials in parts by weight: 20-30 parts of camellia seed oil microcapsule powder, which is prepared by molecular inclusion reaction between camellia seed oil and carboxymethyl-β-cyclodextrin, wherein the carboxymethyl-β-cyclodextrin has a degree of substitution of 0.8-1.2 and an inclusion rate of ≥90%; 15-25 parts of medium-chain triglycerides, which are nanoemulsified to form a stable emulsion with a particle size of 50-100 nm; 10-15 parts of resistant dextrin, the surface of which is grafted with trehalose to form a complex carbohydrate; 8-12 parts of concentrated whey protein, which is grafted with glucose via Maillard reaction, with a grafting degree of 15-20%; 3-5 parts of composite probiotic freeze-dried powder are embedded in sodium alginate-chitosan double-layer microspheres, wherein the composite probiotic freeze-dried powder consists of Lactobacillus acidophilus, Lactobacillus plantarum, and Bifidobacterium longum, and the live bacteria ratio is 3:2:1; 2-4 parts of composite vitamin and mineral package are prepared by liposome encapsulation process; 1-3 parts of chitosan oligosaccharide modified with ferulic acid-γ-polyglutamic acid is prepared by ternary grafting reaction of ferulic acid, γ-polyglutamic acid and chitosan oligosaccharide; 0.5-1.5 parts of konjac gum are compounded with xanthan gum in a ratio of 1:1 to form a synergistic gel; 0.5-1 part of oligofructose is surface-loaded with zinc ions to form a complex.

2. The high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 1, characterized in that The invention also comprises 0.5-1 portion of black garlic extract, wherein the extract contains alliin ≥1.5% and S-allylcysteine ​​≥0.8%, and is spray-dried to prepare micro powder with a particle size of 20-50 μm.

3. The high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 2, characterized in that: The invention also comprises 0.3-0.8 parts of bamboo leaf flavonoids-phospholipid complex, which is prepared by ultrasound assistance, has an encapsulation rate of ≥85% and a particle size of 100-200 nm.

4. The high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 3, characterized in that The medium-chain triglyceride emulsion is added with 0.2-0.5% phosphatidylserine and is homogenized under high pressure to form a liquid crystal structure.

5. The high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 4, characterized in that The sodium alginate-chitosan microspheres of the composite probiotic freeze-dried powder have a particle size of 50-100 μm, a wall thickness of 5-8 μm, and a survival rate of ≥80% in a gastric acid environment for 3 hours.

6. The high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 5, characterized in that The ferulic acid-γ-polyglutamic acid modified chitosan oligosaccharide has a substitution degree of 0.4-0.6 and a molecular weight of 4000-6000 Da.

7. The method for preparing the high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 6, characterized in that: The following steps are involved: S1: Prepare a 25% aqueous solution of carboxymethyl-β-cyclodextrin, add camellia seed oil at a mass ratio of 1:4 at 50°C, stir for 2.5 hours, refrigerate for 12 hours, centrifuge, and freeze-dry to obtain microcapsule powder; S2: Resistant dextrin and trehalose were subjected to dry heat reaction at 120°C and pH 7.5 for 3 hours to obtain a grafted product; S3: whey protein concentrate and glucose are reacted in a mass ratio of 1:0.2 at 60°C and 75% humidity for 48 hours to produce a Maillard product; S4: Put all the raw materials into a three-dimensional mixer, mix at 60r / min for 25 minutes, grind them into 100-200 mesh through ultrafine grinding, and pack them in nitrogen.

8. The method for preparing the high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 7, characterized in that: The medium-chain triglyceride emulsion is prepared by mixing medium-chain triglyceride, phosphatidylserine, and water in a mass ratio of 3:1:6, and homogenizing under high pressure at 110 MPa for three times to form a nanoemulsion.

9. The method for preparing the high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 7, characterized in that: The composite probiotics embedding step comprises: mixing sodium alginate solution with probiotics, dripping calcium chloride solution into the solution to form microspheres, then immersing in chitosan solution for cross-linking, and freeze-drying to obtain double-layer microspheres.

10. The method for preparing the high-energy meal replacement powder compounded with camellia seed oil and medium-chain triglycerides according to claim 7, characterized in that: The preparation steps of the ferulic acid-γ-polyglutamic acid modified chitosan oligosaccharide are as follows: dissolving chitosan oligosaccharide, γ-polyglutamic acid and ferulic acid in a molar ratio of 1:1.5:1.2 in MES buffer, activating with EDC / NHS, reacting at room temperature for 24 hours, and dialyzing and freeze-drying.

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