Preparation method of oil body oil gel with low gel addition amount

By combining modified rubber seed hull cellulose with rubber seed oil, an oil-based oleogel with low gelling agent addition was prepared, solving the problems of high gelling agent dosage and insufficient nutrition in the existing technology, and realizing the preparation of stable and nutrient-rich oleogel.

CN121312705APending Publication Date: 2026-01-13SOUTH CHINA UNIV OF TECH
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Patent Information

Application Number
CN202511507644.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-21
Publication Date
2026-01-13

AI Technical Summary

Technical Problem

Existing methods for preparing oleogels involve high amounts of gelling agents and complex procedures, making it difficult to form high-strength gels. Furthermore, oleogels prepared using traditional methods do not contain nutrients, making it impossible to prepare nutrient-rich gels.

Method used

Rubber seed hull cellulose was modified as a gelling agent and combined with rubber seed oil to prepare an oil gel. The cellulose was treated by alkaline extraction, bleaching and high pressure microfluidic modification, and then mixed with the oil, homogenized and freeze-dried to prepare an oil gel with low gelling agent addition.

Benefits of technology

The preparation of oleogels with low gelling agent addition was achieved. The preparation process is simple and environmentally friendly. The oleogels have a uniform texture, stable structure, and are rich in unsaturated fatty acids and proteins, making them suitable for large-scale production and expanding the functionality of food products.

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Abstract

The invention discloses a preparation method of oil body oil gel with low gel addition amount, and belongs to the technical field of food. The oil body oil gel disclosed by the invention comprises high-pressure micro-jet modified cellulose and a rubber seed oil body; the method comprises the following steps: firstly, extracting cellulose from rubber seed shells, modifying the cellulose through high-pressure micro-jet to serve as a gel, and then extracting oil body from rubber seed kernels to serve as an oil phase. And homogenizing the modified cellulose and the oil body to prepare an oil body emulsion, and freeze-drying and shearing to form the oil body oil gel. The prepared oil body oil gel has the characteristics of extremely low gel addition, high unsaturated fatty acid content and high protein content, and meanwhile, the product is good in stability, simple in preparation method and suitable for large-scale production.
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Description

TECHNICAL FIELD

[0001] The present application belongs to the field of food technology, and particularly relates to a preparation method of oil body oil gel with low gel agent addition amount. BACKGROUND

[0002] Solid fats play a vital role in our diet as essential energy sources, providing food palatability, texture and functionality. However, their high content of trans and saturated fatty acids increases the risk of obesity and chronic health problems such as cardiovascular disease, so healthier alternatives are needed. Oil gel, which captures liquid oil droplets rich in unsaturated fatty acids in a three-dimensional network, provides a method to mimic the functions of traditional solid fats while reducing the intake of harmful fatty acids, and has been a research hotspot in recent years. However, it is well known that oil gel preparation requires the addition of gel agents such as phytosterols, fatty acid esters and vegetable waxes, etc. The addition amount of gel agent is very high (>10% in oil gel) to form oil gel, otherwise it cannot form gel or the gel strength is very low. In addition to gel agents and oils, the traditional method of preparing oil gel does not contain other nutrients, and further loading of nutrients is needed to prepare nutrient-rich gels. Therefore, it is urgent to explore oil gel with low gel agent content and rich in nutrients.

[0003] Oil bodies (OBs) are natural oil-in-water emulsions in plant seeds, which are rich in bioactive substances (such as phenols, phytosterols, vitamin E, etc.). The core of OBs is composed of triglycerides, and the outer layer is composed of a protective layer of proteins and phospholipids, which has certain physical and chemical stability. A promising solution is to use oil bodies in plant seeds to prepare oil body-based oil gel. Due to the presence of natural proteins, phospholipids and other components in oil bodies, it is possible to reduce the use of additional gel agents when preparing oil gel.

[0004] Li et al. (Northwest A&F University. (2025-05-23). CN120021684A.) extracted oil bodies from walnut oil, and then used vanillin and chitosan to prepare oil body-based oil gel, which has good oil holding rate. However, ethanol, acetic acid and other reagents were used in this process, and the addition amount of vanillin and chitosan was also high (about 3%, based on the mass of the emulsion).

[0005] Currently, there are limited studies on oil body-based oil gel, and the operation is complex, so a method for preparing simple and environmentally friendly oil gel with low gel agent addition amount and high oil holding rate is needed. SUMMARY

[0006] The purpose of the present application is to provide a preparation method of oil body oil gel with low gel agent addition amount, in order to overcome the shortcomings and deficiencies of the above-mentioned technology.

[0007] To achieve the aforementioned purposes of the application, the application is implemented by the following technical solutions. The application provides a preparation method of oil body oil gel with low gelatinous agent addition amount, comprising the following steps: (1) Extraction and modification of rubber seed shell cellulose: Alkaline extraction: the rubber seed shell is crushed, sieved to obtain rubber seed shell powder, which is added into a 6wt% NaOH solution, and stirred in a water bath to obtain an alkali washing precipitate; Bleaching treatment: the alkali washing precipitate is added into a 1.6wt% NaClO2 solution, stirred in a water bath, then washed with water for multiple times, the precipitate is collected by filtration, the bleaching treatment is repeated for multiple times, and the cellulose is obtained by drying; High-pressure microjet modification (HPM): the cellulose is added into distilled water to configure a 1% (w / w) cellulose solution, which is subjected to high-pressure microjet treatment under different conditions, and the modified cellulose solution is collected for standby; (2) Extraction of rubber seed oil body: the rubber seed is added into distilled water and soaked at low temperature for a period of time; the soaked rubber seed is homogenized in a sucrose solution; the obtained mixture is filtered through two layers of filter cloth, centrifuged, and the upper gelatinous material, i.e. the oil body, is collected, then subjected to two times of distilled water washing and centrifugation to remove the residual sucrose solution, and the good oil body is collected and placed in a refrigerator for standby; (3) Preparation of oil body oil gel with low gelatinous agent addition amount: the modified cellulose solution obtained in step (1) and the oil body obtained in step (2) are homogenized for different times according to different proportions to obtain a mixed and uniform oil body emulsion, which is frozen to obtain a freeze-dried product; the freeze-dried product is sheared to obtain the oil body oil gel with low gelatinous agent addition amount.

[0008] Further, in step (1), in the alkaline extraction, the rubber seed shell powder is sieved to 60 meshes.

[0009] Further, in step (1), in the alkaline extraction, the rubber seed shell powder is added into the 6wt% NaOH solution according to a solid-liquid ratio of 1g:10 mL, and stirred in a water bath environment at 80℃ for 3h.

[0010] Further, in step (1), in the bleaching treatment, the alkali washing precipitate is added into the 1.6wt% NaClO2 solution according to a solid-liquid ratio of 1g:10 mL, and stirred in a water bath environment at 70℃ for 2h.

[0011] Further, in step (1), in the bleaching treatment, the bleaching treatment is repeated for 3 times. Further, in step (1), in the bleaching treatment, the drying is performed in an oven, and the oven temperature is 60℃.

[0012] Further, in step (1), in the high pressure microfluidization modification (HPM), the homogenization condition of the high pressure microfluidization is 4-8 times, and the homogenization pressure is 40-100 Mpa.

[0013] Further, in step (1), in the high pressure microfluidization modification (HPM), the modified cellulose solution is stored in a 4℃ refrigerator. Further, in step (2), the mass ratio of the rubber seed and the distilled water is 1:5 (w / w).

[0014] Further, in step (2), after the rubber seed and the distilled water are mixed, they are soaked at 4℃ for 16-20 h.

[0015] Further, in step (2), the concentration of the sucrose solution is 8 mol / L.

[0016] Further, in step (2), the mass ratio of the sucrose solution and the soaked rubber seed is 5:1.

[0017] Further, in step (2), the homogenization time is 120 s.

[0018] Further, in step (2), the centrifugation parameter for extracting the oil body is 8000-12000 rpm, 20-30 min.

[0019] Further, in step (3), the added amount of the modified cellulose (based on the mass of the oil body emulsion) is 0-0.6%.

[0020] Further, in step (3), in the homogenization condition, the shear rate is 7000-12000 rpm, the homogenization time is 1-5 min, and the homogenization temperature is room temperature.

[0021] Further, in step (3), the shear rate of the freeze-dried product is 500 rpm, 1 min.

[0022] Further, in step (3), the oil body emulsion is pre-frozen at-20℃, and then freeze-dried for 24 h.

[0023] Further, in step (3), the oil body oil gel with a low added amount of the gelatin is stored at room temperature.

[0024] The application also provides an oil body oil gel with a low added amount of the gelatin, which is prepared by the above preparation method.

[0025] Compared with the prior art, the application has the following advantages and beneficial effects: (1) The present application makes full use of rubber seed resources, modifies the cellulose in the rubber seed shell as a gelling agent, and uses rubber seed oil bodies as an oil phase to prepare an oil body oil gel system which has uniform texture, stable structure, and a simple preparation process, saves energy, has low production cost, and is suitable for large-scale production.

[0026] (2) Compared with traditional oil gels, the gelling agent used in the method of the present application has a very low content. The vegetable oil in the oil body oil gel is rich in unsaturated fatty acids, high in protein, high in nutritional value, and free of trans fatty acids. The system can be used for spreadable sauce products to expand the functionality of food. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Figure for the oil body emulsion prepared for Examples 1-5 and Comparative Example 1.

[0028] Figure 2 Figure for the freeze-dried product of the oil body emulsion prepared for Examples 1-5 and Comparative Example 1.

[0029] Figure 3 Inverted figure of the oil body oil gel prepared for Examples 1-5 and Comparative Example 1.

[0030] Figure 4 Oil retention rate of the oil body oil gel prepared for Examples 1-5 and Comparative Example 1.

[0031] Figure 5 Schematic diagram of a method for preparing an oil body oil gel with a low gelling agent addition amount. DETAILED DESCRIPTION

[0032] The specific implementation of the present application is further described below in conjunction with the drawings and examples, but the implementation and protection of the present application are not limited thereto. It should be noted that if the following processes are not specifically described in detail, they can be implemented or understood by those skilled in the art with reference to the prior art. If the reagents or instruments used are not marked with the manufacturer, they are considered to be conventional products that can be purchased on the market.

[0033] A schematic diagram of a method for preparing an oil body oil gel with a low gelling agent addition amount provided by the present application is shown in Figure 5 .

[0034] Example 1 In this embodiment, the modified cellulose addition amount is 0.15 wt% of the mass of the oil body emulsion. A method for preparing an oil body oil gel with a low gelling agent addition amount includes the following steps: (1) Extraction and modification of rubber seed shell cellulose: Alkaline extraction: The rubber seed shell is crushed and sieved, and added to a 6 wt% NaOH solution at a solid-liquid ratio of 1 g:10 mL, continuously stirred at 80°C in a water bath environment for 3h, and an alkali washing precipitate is obtained; Bleaching: The alkali washing precipitate was added into 1.6 wt% NaCIO2 solution with a ratio of 1 g:10 mL of feed solution, continuously stirred in a water bath environment at 70°C for 2h, then washed with water for several times, collected the precipitate by filtration, the bleaching process was carried out for 3 times, then dried in an oven at 60°C to obtain cellulose; High pressure microfluidization modification (HPM): The cellulose was added into distilled water to prepare a 1 wt% cellulose solution, then treated by high pressure microfluidization for 4 times at 40 MPa, the modified cellulose solution was collected for later use.

[0035] (2) Extraction of rubber seed oil body: Rubber seeds were mixed with distilled water at a ratio of 1:5 (w / w) and soaked at 4°C for 16 h. The soaked rubber seeds were mixed with 8 mol / L sucrose solution at a ratio of 1:5 (w / w) and homogenized for 120 s. The resulting mixture was filtered through two layers of filter cloth, centrifuged at 9000 rpm for 20 min, and the upper gel-like material (i.e., oil body) was collected. The oil body was then washed twice with distilled water and centrifuged to remove the residual sucrose solution. The collected oil body was stored in a refrigerator for later use.

[0036] (3) Preparation of modified cellulose-oil body oil gel: The modified cellulose solution obtained in step (1), the oil body obtained in step (2), and distilled water were mixed (such that the mass ratio of oil phase to water phase was 1:3 (w / w), and the modified cellulose accounted for 0.15 wt% in the emulsion) to prepare an oil body emulsion by homogenization at 7000 rpm for 2 min. The emulsion was pre-frozen in a refrigerator at -20°C, and then freeze-dried for 24 h to obtain a freeze-dried product. The freeze-dried product was sheared at 500 rpm for 1 min to obtain a modified cellulose-oil body oil gel.

[0037] Example 2 In this example, the amount of modified cellulose added was 0.3 wt% of the mass of the oil body emulsion. The preparation method of the oil gel of the oil body with a low amount of added gelatinizer included the following steps: (1) Extraction and modification of rubber seed shell cellulose: Alkaline extraction: The rubber seed shells were crushed and sieved, and then added to a 6 wt% NaOH solution with a ratio of 1 g:10 mL of feed solution, and continuously stirred in a water bath environment at 80°C for 3h to obtain alkali washing precipitate; Bleaching: The alkali washing precipitate was added into 1.6 wt% NaCIO2 solution with a ratio of 1 g:10 mL of feed solution, continuously stirred in a water bath environment at 70°C for 2h, then washed with water for several times, collected the precipitate by filtration, the bleaching process was carried out for 3 times, then dried in an oven at 60°C to obtain cellulose; High pressure microfluidization modification (HPM): Cellulose was added into distilled water to prepare a 1 wt% cellulose solution, which was then treated by high pressure microfluidization for 4 times at 60 MPa. The modified cellulose solution was collected and stored for later use.

[0038] (2) Extraction of rubber seed oil bodies: Rubber seeds were mixed with distilled water at a ratio of 1:5 (w / w) and soaked at 4 °C for 18 h. The soaked rubber seeds were mixed with 8 mol / L sucrose solution at a ratio of 1:5 (w / w) and homogenized for 120 s. The resulting mixture was filtered through two layers of filter cloth, centrifuged at 8000 rpm for 30 min, and the upper gel-like material (i.e., oil bodies) was collected. The oil bodies were then washed twice with distilled water and centrifuged to remove residual sucrose solution. The purified oil bodies were collected and stored in a refrigerator for later use.

[0039] (3) Preparation of modified cellulose-oil body organogel: The modified cellulose solution obtained in step (1), the oil bodies obtained in step (2), and distilled water were mixed (such that the mass ratio of the oil phase to the water phase was 1:3 (w / w), and the modified cellulose accounted for 0.3 wt% in the emulsion) and then homogenized at 10000 rpm for 3 min to prepare an oil body emulsion. The emulsion was pre-frozen in a refrigerator at -20 °C and then freeze-dried for 24 h to obtain a freeze-dried product. The freeze-dried product was sheared at 500 rpm for 1 min to obtain a modified cellulose-oil body organogel.

[0040] Example 3 In this example, the amount of modified cellulose added was 0.40 wt% of the mass of the oil body emulsion. The method for preparing an oil body organogel with a low amount of added gelatinizer included the following steps: (1) Extraction and modification of rubber seed shell cellulose: Alkaline extraction: The rubber seed shells were ground and sieved, and then added to a 6 wt% NaOH solution at a solid-to-liquid ratio of 1 g:10 mL. The mixture was continuously stirred in a water bath at 80 °C for 3 h to obtain an alkali-washed precipitate. Bleaching treatment: The alkali-washed precipitate was added to a 1.6 wt% NaC02 solution at a solid-to-liquid ratio of 1 g:10 mL, and the mixture was continuously stirred in a water bath at 70 °C for 2 h. The precipitate was then washed with water several times, filtered, and collected. The bleaching process was repeated three times, and then the cellulose was dried in an oven at 60 °C. High pressure microfluidization modification (HPM): Cellulose was added into distilled water to prepare a 1 wt% cellulose solution, which was then treated by high pressure microfluidization for 4 times at 60 MPa. The modified cellulose solution was collected and stored for later use.

[0041] (2) Extraction of rubber seed oil body: Rubber seed was mixed with distilled water at a ratio of 1:5 (w / w) and soaked at 4°C for 20 h. The soaked rubber seed was mixed with 8 mol / L sucrose solution at a ratio of 1:5 (w / w) and homogenized for 120 s. The obtained mixture was filtered through two layers of filter cloth, centrifuged at 11000 rpm for 20 min, and the upper gel-like material (i.e., oil body) was collected. The oil body was then washed twice with distilled water and centrifuged to remove the residual sucrose solution. The oil body was collected and stored in a refrigerator for later use.

[0042] (3) Preparation of modified cellulose-oil body oil gel: The modified cellulose solution obtained in step (1), the oil body obtained in step (2), and distilled water were mixed (such that the mass ratio of the oil phase to the water phase was 1:3 (w / w), and the modified cellulose accounted for 0.40 wt% in the emulsion) and then homogenized at 11000 rpm for 1 min to prepare an oil body emulsion. The emulsion was pre-frozen in a refrigerator at -20°C and then freeze-dried for 24 h to obtain a freeze-dried product. The freeze-dried product was sheared at 500 rpm for 1 min to obtain a modified cellulose-oil body oil gel.

[0043] Example 4 In this example, the amount of modified cellulose added was 0.50 wt% of the oil body emulsion, and the preparation method of an oil body oil gel with a low amount of gelatinizer included the following steps: (1) Extraction and modification of rubber seed shell cellulose: Alkaline extraction: The rubber seed shell was crushed and sieved, and then added to a 6 wt% NaOH solution at a solid-liquid ratio of 1 g:10 mL. The mixture was continuously stirred in a water bath at 80°C for 3 h to obtain an alkali washing precipitate; Bleaching treatment: The alkali washing precipitate was added to a 1.6 wt% NaClO2 solution at a solid-liquid ratio of 1 g:10 mL, and the mixture was continuously stirred in a water bath at 70°C for 2 h. The precipitate was then washed with water several times, filtered, and collected. The bleaching process was repeated three times, and then the precipitate was dried in an oven at 60°C to obtain cellulose; High-pressure microjet modification (HPM): The cellulose was added to distilled water to prepare a 1 wt% cellulose solution, which was then subjected to high-pressure microjet treatment at 80 MPa for 6 times. The modified cellulose solution was collected and stored for later use.

[0044] (2) Extraction of rubber seed oil body: Rubber seed was mixed with distilled water at a ratio of 1:5 (w / w) and soaked at 4 °C for 19 h. The soaked rubber seed was mixed with 8 mol / L sucrose solution at a ratio of 1:5 (w / w) and homogenized for 120 s. The obtained mixture was filtered through two layers of filter cloth, centrifuged at 10000 rpm for 25 min, and the upper gel-like material (i.e., oil body) was collected. The oil body was then washed twice with distilled water and centrifuged to remove the residual sucrose solution. The oil body was collected and stored in a refrigerator for later use.

[0045] (3) Preparation of modified cellulose-oil body oil gel: The modified cellulose solution obtained in step (1), the oil body obtained in step (2), and distilled water were mixed (such that the mass ratio of the oil phase to the water phase was 1:3 (w / w), and the modified cellulose accounted for 0.50 wt% in the emulsion) and then homogenized at 7000 rpm for 5 min to prepare an oil body emulsion. The emulsion was pre-frozen in a refrigerator at -20 °C and then freeze-dried for 24 h to obtain a freeze-dried product. The freeze-dried product was sheared at 500 rpm for 1 min to obtain a modified cellulose-oil body oil gel.

[0046] Example 5 In this example, the amount of modified cellulose added was 0.60 wt% of the mass of the oil body emulsion, and the preparation method of an oil body oil gel with a low amount of added gelatinizer included the following steps: (1) Extraction and modification of rubber seed shell cellulose: Alkaline extraction: The rubber seed shell was crushed and sieved, and then added to a 6 wt% NaOH solution at a solid-liquid ratio of 1 g:10 mL. The mixture was continuously stirred in a water bath at 80 °C for 3 h to obtain an alkali washing precipitate; Bleaching treatment: The alkali washing precipitate was added to a 1.6 wt% NaC02 solution at a solid-liquid ratio of 1 g:10 mL, and the mixture was continuously stirred in a water bath at 70 °C for 2 h. The precipitate was then washed with water several times, filtered, and collected. The bleaching process was repeated three times, and then the cellulose was dried in an oven at 60 °C to obtain the final product. High-pressure microjet modification (HPM): The cellulose was added to distilled water to prepare a 1 wt% cellulose solution, which was then subjected to high-pressure microjet treatment at 100 MPa for 6 times. The modified cellulose solution was collected and stored for later use.

[0047] (2) Extraction of rubber seed oil body: Rubber seeds were mixed with distilled water at a ratio of 1:5 (w / w) and soaked at 4 °C for 18 h. The soaked rubber seeds were mixed with 8 mol / L sucrose solution at a ratio of 1:5 (w / w) and homogenized for 120 s. The obtained mixture was filtered through two layers of filter cloth, centrifuged at 10000 rpm for 30 min, and the upper gel-like material (i.e., oil body) was collected. The collected oil body was washed twice with distilled water and centrifuged to remove the residual sucrose solution. The obtained oil body was collected and stored in a refrigerator for later use.

[0048] (3) Preparation of modified cellulose-oil body oil gel: The modified cellulose solution obtained in step (1), the oil body obtained in step (2), and distilled water were mixed (such that the mass ratio of the oil phase to the water phase was 1:3 (w / w), and the modified cellulose accounted for 0.60 wt% in the emulsion) and then homogenized at 12000 rpm for 2 min to prepare an oil body emulsion. The emulsion was pre-frozen in a refrigerator at -20 °C and then freeze-dried for 24 h to obtain a freeze-dried product. The freeze-dried product was sheared at 500 rpm for 1 min to obtain a modified cellulose-oil body oil gel.

[0049] Comparative Example 1 The preparation method of the oil body oil gel (without the addition of modified cellulose) of the present example includes the following steps: (1) Extraction of rubber seed oil body: Rubber seeds were mixed with distilled water at a ratio of 1:5 (w / w) and soaked at 4 °C for 19 h. The soaked rubber seeds were mixed with 8 mol / L sucrose solution at a ratio of 1:5 (w / w) and homogenized for 120 s. The obtained mixture was filtered through two layers of filter cloth, centrifuged at 9000 rpm for 20 min, and the upper gel-like material (i.e., oil body) was collected. The collected oil body was washed twice with distilled water and centrifuged to remove the residual sucrose solution. The obtained oil body was collected and stored in a refrigerator for later use.

[0050] (2) Preparation of oil body oil gel: The oil body obtained in step (1) and distilled water were mixed such that the mass ratio of the oil phase to the water phase was 1:3 (w / w), and then homogenized at 10000 rpm for 2 min to prepare an oil body emulsion. The emulsion was pre-frozen in a refrigerator at -20 °C and then freeze-dried for 24 h to obtain a freeze-dried product. The freeze-dried product was sheared at 500 rpm for 1 min to obtain a modified cellulose-oil body oil gel.

[0051] Performance testing and result analysis (1) Appearance of the oil body emulsion, freeze-dried product, and oil body oil gel of Examples 1-5 and Comparative Example.

[0052] By Figures 1-3The experimental results can find that the modified cellulose addition has no obvious influence on the appearance of the oil body emulsion, but with the increase of the modified cellulose content, the collapse phenomenon in the freeze-dried product gradually disappears, and the oil leakage gradually weakens, which shows that the modified cellulose with low addition amount can also wrap the oil phase. Figure 3 As can be seen from Table 1, when the modified cellulose content is 0.15% (based on the emulsion), the oil body oil gel of the vegetation can be inverted, which shows that the modified cellulose can well serve as a gelling agent.

[0053] (2) Determination of oil retention rate of the oil body oil gel prepared in Examples 1-5 and Comparative Example 1: Determination of oil retention rate of the oil gel: about 1 g of the oil body oil gel was taken into a 10 ml centrifuge tube, the centrifuge tube was centrifuged at 10000 rpm for 10 min, then the centrifuged oil was drained by inverting, and the oil remaining on the tube wall was carefully wiped with a cotton swab. The calculation formula of the oil retention rate is as follows:

[0054] Wherein, m1 is the weight of the oil in the oil gel, m2 is the weight of the oil gel and the centrifuge tube before centrifugation, and m3 is the weight of the oil gel and the centrifuge tube after centrifugation.

[0055] Figure 4 The determination results of the oil retention rate of the oil body oil gel prepared in Examples 1-5 and Comparative Example 1 are shown.

[0056] The oil retention rate of the oil body oil gel without adding modified cellulose is low, which is not conducive to the application in food. Figure 4 As can be seen from Table 1, with the addition of modified cellulose, the oil retention rate of the oil gel reaches more than 98%, and the oil gel with high oil retention rate can prevent oil from separating out of the food, and keep the structure of the food stable.

[0057] In summary, compared with the prior art, the advantages and beneficial effects of the present application are as follows: (1) The present application makes full use of rubber seed resources, modifies the cellulose in the rubber seed shell as a gelling agent, and uses the rubber seed oil body as the oil phase, so that the prepared oil body oil gel system has uniform texture, stable structure, and the preparation process is simple, energy-saving, low in production cost, and suitable for large-scale production.

[0058] (2) Compared with the traditional prepared oil gel, the gelling agent used in the method of the present application has very low content. The vegetable oil in the oil body oil gel is rich in unsaturated fatty acids, high in protein, high in nutritional value and free of trans fatty acids, and the system can be used for spreadable sauce products to expand the functionality of food.

Claims

1. A method of preparing an oil body oil gel with a low gel agent addition amount, characterized by, The steps are as follows: (1) Extraction and modification of rubber seed shell cellulose: alkali extraction: the rubber seed shell is crushed, sieved to obtain rubber seed shell powder, which is added to a 6 wt% NaOH solution, stirred in a water bath to obtain alkali washing precipitate; bleaching treatment: the alkali washing precipitate is added to a 1.6 wt% NaClO2 solution, stirred in a water bath, then washed with water for several times, the precipitate is collected by filtration, the bleaching treatment is repeated for several times, and the cellulose is obtained by drying; high pressure microfluidization modification (HPM): the cellulose is added to distilled water to prepare a 1 wt% cellulose solution, which is subjected to high pressure microfluidization treatment under different conditions, and the modified cellulose solution is collected for use; (2) Extraction of rubber seed oil body: the rubber seed is added to distilled water and soaked at low temperature for a period of time; the soaked rubber seed is homogenized in a sucrose solution; the obtained mixture is filtered through two layers of filter cloth, centrifuged, and the upper gel-like material is collected, then distilled water is used for washing and centrifugation to remove the residual sucrose solution, and the oil body is collected and stored in a refrigerator for use; (3) Preparation of oil body oil gel with low gelatinous additive amount: the modified cellulose solution obtained in step (1) and the oil body obtained in step (2) are homogenized for different times in different proportions to obtain a mixed oil body emulsion, which is pre-frozen in a refrigerator, and then freeze-dried to obtain a freeze-dried product; the freeze-dried product is sheared to obtain an oil body oil gel with low gelatinous additive amount.

2. The method of claim 1, wherein the low-gelling oil body oil gel is prepared by adding an amount of oil body oil to the oil body suspension, and In step (1), in the alkali extraction, the rubber seed shell powder is added to the 6 wt% NaOH solution at a solid-liquid ratio of 1 g:10 mL.

3. The method of claim 1, wherein the low-gelator loading oil body oil gel is prepared by the steps of: In step (1), in the bleaching treatment, the alkali washing precipitate is added to the 1.6 wt% NaClO2 solution at a solid-liquid ratio of 1 g:10 mL.

4. The method of claim 1, wherein the low-gel-adding amount of oil body oil gel is prepared by adding 0.1 to 5% of the oil body oil to 95 to 99.9% of the aqueous medium. In step (1), in the high pressure microfluidization modification (HPM), the homogenization conditions of the high pressure microfluidization are 4-8 times, and the homogenization pressure is 40-100 Mpa.

5. The method of claim 1, wherein the low-gelator loading oil body oil gel is prepared by the steps of: In step (2), the mass ratio of rubber seed to distilled water is 1:

5.

6. The method of claim 1, wherein the low-gel-adding amount of oil body oil gel is prepared by the steps of: In step (2), the concentration of the sucrose solution is 8 mol / L.

7. The method of claim 1, wherein the low-gelator loading oil body oil gel is prepared by the steps of: In step (2), the centrifugation parameters for extracting the oil body are 8000-11000 rpm for 20-30 min.

8. The method of claim 1, wherein the low-gelator loading oil body oil gel is prepared by the steps of: In step (3), the modified cellulose additive amount is 0-0.6 wt% based on the mass of the oil body emulsion.

9. The method of claim 1, wherein the low-gelling oil body oil gel is prepared by the steps of: In step (3), the homogenization rate in the homogenization conditions is 7000-12000 rpm, the homogenization time is 1-5 min, and the homogenization temperature is room temperature.

10. The oil body oil gel with low gelatinous additive amount prepared by the preparation method of any one of claims 1-9.