Safe and nutritional preservative food additive and preparation method thereof

Abstract

The present invention relates to the technical field of food additives and discloses a safe and nutritional preservative food additive and a preparation method thereof, the safe and nutritional preservative food additive is prepared from the following components: an okra extract composite material, lentinan, a Chinese yam steeping liquid, grape seed powder, corn stigma, red date powder, vitamin C and catechin. The raw materials of the prepared food additive are all from natural plants, and compared with an existing chemically synthesized preservative, the prepared food additive has higher safety, can be decomposed by natural metabolism in a human body, and has no threat to the health and safety of the human body. The food additive prepared by the invention has a unique flavor, not only has a preservative effect, but also can add unique fragrance to food, and meanwhile, can effectively avoid the problem of peculiar smell caused by chemical preservatives to the food, thereby being beneficial to keeping the natural taste and flavor of the food.

Description

Technical Field

[0001] The invention relates to the technical field of food additives, in particular to a safe and nutritious antiseptic food additive and a preparation method thereof. Background Art

[0002] Food additives refer to chemically synthesized or natural substances added to food to improve its quality, color, aroma and taste, as well as for the needs of preservation and processing.

[0003] Due to the rapid development of the food industry, food additives have become an important part of the modern food industry.

[0004] However, excessive use of chemical food additives may cause various hazards to human health. Excessive intake of certain food additives may cause allergic reactions, digestive problems, liver and kidney damage, and even potential cancer risks.

[0005] The prior art application number is CN103844151A, which discloses that "the present invention belongs to the field of food, specifically, it is a food additive. A food additive includes 0-20 parts of sodium stearoyl lactylate, 0-20 parts of carrageenan, 0-20 parts of sucrose ester, 0-5 parts of sodium stearate, and 0-5 parts of maltodextrin. The additive of the present invention can be widely used in the field of food, for example: meat derivatives, sausages, cheese, etc. " However, its nutritional value is relatively low and the preservative effect is average.

[0006] Based on this, the present invention provides a safe and nutritious preservative food additive to solve the corresponding problem. Summary of the invention

[0007] In view of the problems in the prior art, the present invention provides a safe and nutritious antiseptic food additive and a preparation method thereof.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a safe and nutritious antiseptic food additive, which comprises the following ingredients by weight: Okra extract compound 2.0-2.5 parts, lentinan 0.3-0.8 parts, yam soaking liquid 1.2-1.5 parts, grape seed powder 3.5-4.5 parts, corn silk 2-3 parts, red date powder 1-3 parts, vitamin C 0.5-1.2 parts, catechin 0.12-0.2 parts.

[0009] As a further technical solution: the preparation method of the okra extraction composite material is: First, the okra is crushed to obtain okra powder; Grinding camellia seeds to obtain camellia seed powder; Add okra powder and camellia seed powder into a blender in sequence, and mix them evenly to obtain okra and camellia seed mixed powder; Among them, the stirring speed is 500r / min and the stirring time is 40min; The mixed powder of okra and camellia seeds is fumigated with water vapor for 30 minutes to obtain a fumigation material; The fumigation material is subjected to multi-stage supercritical carbon dioxide extraction treatment to obtain okra extraction composite material.

[0010] As a further technical solution: the average particle size of the okra powder is 80 mesh; The average particle size of camellia seed powder is 120 mesh; The mixing mass ratio of okra powder and camellia seed powder is 10:3-4.

[0011] As a further technical solution: the fumigation treatment is: The mixed powder of okra and camellia seeds was fumigated by steam, specifically: Spread the mixed powder of okra and camellia seeds on the fumigation rack with a thickness of 0.5 cm, and continuously pass 100℃ steam. Turn it over every 10 minutes. After the fumigation is completed, place it in a drying oven for 4 hours at a drying temperature of 60℃.

[0012] As a further technical solution: the multi-stage supercritical carbon dioxide extraction process is: It includes one-stage supercritical carbon dioxide treatment, two-stage supercritical carbon dioxide treatment, three-stage supercritical carbon dioxide treatment, and four-stage supercritical carbon dioxide treatment; Among them, the first stage of supercritical carbon dioxide treatment is: extraction for 20 minutes, the extraction pressure is maintained at 20MPa, the temperature is 42°C, and the carbon dioxide flow rate is 22L / h; The second stage of supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 22 MPa, temperature at 42 °C, carbon dioxide flow rate at 22 L / h; The three-stage supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 25 MPa, temperature at 45 °C, carbon dioxide flow rate at 25 L / h; The four-stage supercritical carbon dioxide treatment is as follows: extraction for 40 min, extraction pressure maintained at 28 MPa, temperature at 45°C, and carbon dioxide flow rate of 25 L / h.

[0013] As a further technical solution: the method for preparing the yam soaking liquid is: Peeling the yam and crushing it to obtain yam crushed material; The yam crushed material was mixed with water, stirred for 40 minutes, and then subjected to high-speed centrifugation for 15 minutes, and filtered to obtain a filtrate; The filtrate is concentrated to 5% of the original volume to obtain the product.

[0014] As a further technical solution: the mixing ratio of the yam crushed material and water is 15g:150mL; The high-speed centrifugal rotation speed is 5500r / min.

[0015] As a further technical solution: the grape seed powder has a particle size of 125 mesh; The red date powder has a particle size of 80 meshes.

[0016] A method for preparing a safe and nutritious antiseptic food additive, comprising weighing the following components in parts by weight: okra extract compound, lentinan, yam soaking liquid, grape seed powder, corn silk, red date powder, vitamin C, and catechins; Add each component to the mixer in turn and stir and mix for 1 hour, then discharge the material to obtain a mixed material, crush the mixed material, pass it through an 80-mesh sieve, and then bag it and seal it.

[0017] Beneficial effects of the present invention: The raw materials of the food additives prepared by the present invention all come from natural plants. Compared with existing chemically synthesized preservatives, the food additives prepared by the present invention have higher safety, can be naturally metabolized and decomposed in the human body, and pose no threat to human health and safety.

[0018] The food additive prepared by the invention has a unique flavor, not only has an antiseptic effect, but also can add a unique fragrance to the food, and at the same time, can effectively avoid the occurrence of odor problems caused by chemical preservatives to the food, thereby helping to maintain the natural taste and flavor of the food.

[0019] The food additive prepared by the present invention is more natural and healthy, and is more acceptable to consumers, which can greatly improve its market competitiveness among food additives and help improve the brand image of the product.

[0020] The food additive of the present invention contains multiple nutrients, including amino acids, proteins, cellulose, etc., and can further improve the nutritional value of food.

[0021] The invention introduces okra extraction compound material and yam soaking liquid, and the cooperation of the two can not only play a higher antibacterial performance and better antiseptic effect, but also has a stronger antioxidant effect.

[0022] The production process of the food additive prepared by the invention is environmentally friendly, the raw materials thereof are renewable, less pollutants are generated during the production process, less pressure is exerted on the environment, and the requirements of sustainable development are met. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the present application will be clearly and completely described below in combination with the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0024] Example 1

[0025] A method for preparing a safe and nutritious antiseptic food additive comprises weighing, according to weight portions: 2.0 parts of okra extract composite material, 0.3 parts of lentinan, 1.2 parts of yam soaking liquid, 3.5 parts of grape seed powder, 2 parts of corn silk, 1 part of red date powder, 0.5 parts of vitamin C, and 0.12 parts of catechins; the particle size of the grape seed powder is 125 meshes; the particle size of the red date powder is 80 meshes; The preparation method of okra extract composite material is as follows: First, the okra is crushed to obtain okra powder; Grinding camellia seeds to obtain camellia seed powder; Add okra powder and camellia seed powder into a blender in sequence, and mix them evenly to obtain okra and camellia seed mixed powder; Among them, the stirring speed is 500r / min and the stirring time is 40min; The mixed powder of okra and camellia seeds is fumigated with water vapor for 30 minutes to obtain a fumigation material; The fumigated material is subjected to multi-stage supercritical carbon dioxide extraction treatment to obtain an okra extraction composite material. The average particle size of okra powder is 80 meshes; the average particle size of camellia seed powder is 120 meshes; and the mixing mass ratio of okra powder to camellia seed powder is 10:3.

[0026] Fumigation treatment is: The mixed powder of okra and camellia seeds was fumigated by steam, specifically: Spread the mixed powder of okra and camellia seeds on the fumigation rack with a thickness of 0.5 cm, and continuously pass 100℃ steam. Turn it over every 10 minutes. After the fumigation is completed, place it in a drying oven for 4 hours at a drying temperature of 60℃.

[0027] The multi-stage supercritical carbon dioxide extraction process is as follows: It includes one-stage supercritical carbon dioxide treatment, two-stage supercritical carbon dioxide treatment, three-stage supercritical carbon dioxide treatment, and four-stage supercritical carbon dioxide treatment; Among them, the first stage of supercritical carbon dioxide treatment is: extraction for 20 minutes, the extraction pressure is maintained at 20MPa, the temperature is 42°C, and the carbon dioxide flow rate is 22L / h; The second stage of supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 22 MPa, temperature at 42 °C, carbon dioxide flow rate at 22 L / h; The three-stage supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 25 MPa, temperature at 45 °C, carbon dioxide flow rate at 25 L / h; The four-stage supercritical carbon dioxide treatment is as follows: extraction for 40 min, extraction pressure maintained at 28 MPa, temperature at 45°C, and carbon dioxide flow rate of 25 L / h.

[0028] The preparation method of yam soaking liquid is as follows: Peeling the yam and crushing it to obtain yam crushed material; The yam crushed material was mixed with water, stirred for 40 minutes, and then subjected to high-speed centrifugation for 15 minutes, and filtered to obtain a filtrate; The filtrate is concentrated to 5% of the original volume to obtain the product.

[0029] The mixing ratio of yam crushed material and water is 15g:150mL; The high-speed centrifugal rotation speed is 5500r / min.

[0030] Add each component to the mixer in turn and stir and mix for 1 hour, then discharge the material to obtain a mixed material, crush the mixed material, pass it through an 80-mesh sieve, and then bag it and seal it.

[0031] Example 2

[0032] A method for preparing a safe and nutritious antiseptic food additive, comprising weighing, by weight: 2.2 parts of okra extract composite material, 0.4 parts of lentinan, 1.3 parts of yam soaking liquid, 3.8 parts of grape seed powder, 2.2 parts of corn silk, 2 parts of red date powder, 0.8 parts of vitamin C, and 0.15 parts of catechins; the particle size of the grape seed powder is 125 meshes; the particle size of the red date powder is 80 meshes; The preparation method of okra extract composite material is as follows: First, the okra is crushed to obtain okra powder; Grinding camellia seeds to obtain camellia seed powder; Add okra powder and camellia seed powder into a blender in sequence, and mix them evenly to obtain okra and camellia seed mixed powder; Among them, the stirring speed is 500r / min and the stirring time is 40min; The mixed powder of okra and camellia seeds is fumigated with water vapor for 30 minutes to obtain a fumigation material; The fumigated material is subjected to multi-stage supercritical carbon dioxide extraction treatment to obtain an okra extraction composite material. The average particle size of okra powder is 80 meshes; the average particle size of camellia seed powder is 120 meshes; and the mass ratio of okra powder to camellia seed powder is 10:3.5.

[0033] Fumigation treatment is: The mixed powder of okra and camellia seeds was fumigated by steam, specifically: Spread the mixed powder of okra and camellia seeds on the fumigation rack with a thickness of 0.5 cm, and continuously pass 100℃ steam. Turn it over every 10 minutes. After the fumigation is completed, place it in a drying oven for 4 hours at a drying temperature of 60℃.

[0034] The multi-stage supercritical carbon dioxide extraction process is as follows: It includes one-stage supercritical carbon dioxide treatment, two-stage supercritical carbon dioxide treatment, three-stage supercritical carbon dioxide treatment, and four-stage supercritical carbon dioxide treatment; Among them, the first stage of supercritical carbon dioxide treatment is: extraction for 20 minutes, the extraction pressure is maintained at 20MPa, the temperature is 42°C, and the carbon dioxide flow rate is 22L / h; The second stage of supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 22 MPa, temperature at 42 °C, carbon dioxide flow rate at 22 L / h; The three-stage supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 25 MPa, temperature at 45 °C, carbon dioxide flow rate at 25 L / h; The four-stage supercritical carbon dioxide treatment is as follows: extraction for 40 min, extraction pressure maintained at 28 MPa, temperature at 45°C, and carbon dioxide flow rate of 25 L / h.

[0035] The preparation method of yam soaking liquid is as follows: Peeling the yam and crushing it to obtain yam crushed material; The yam crushed material was mixed with water, stirred for 40 minutes, and then subjected to high-speed centrifugation for 15 minutes, and filtered to obtain a filtrate; The filtrate is concentrated to 5% of the original volume to obtain the product.

[0036] The mixing ratio of yam crushed material and water is 15g:150mL; The high-speed centrifugal rotation speed is 5500r / min.

[0037] Add each component to the mixer in turn and stir and mix for 1 hour, then discharge the material to obtain a mixed material, crush the mixed material, pass it through an 80-mesh sieve, and then bag it and seal it.

[0038] Example 3

[0039] A method for preparing a safe and nutritious antiseptic food additive comprises weighing, according to weight portions: 2.4 parts of okra extract compound, 0.6 parts of lentinan, 1.4 parts of yam soaking liquid, 3.8 parts of grape seed powder, 2.8 parts of corn silk, 2 parts of red date powder, 0.9 parts of vitamin C, and 0.18 parts of catechins; the particle size of the grape seed powder is 125 meshes; the particle size of the red date powder is 80 meshes; The preparation method of okra extract composite material is as follows: First, the okra is crushed to obtain okra powder; Grinding camellia seeds to obtain camellia seed powder; Add okra powder and camellia seed powder into a blender in sequence, and mix them evenly to obtain okra and camellia seed mixed powder; Among them, the stirring speed is 500r / min and the stirring time is 40min; The mixed powder of okra and camellia seeds is fumigated with water vapor for 30 minutes to obtain a fumigation material; The fumigated material was subjected to multi-stage supercritical carbon dioxide extraction treatment to obtain an okra extraction composite material. The average particle size of okra powder was 80 meshes; the average particle size of camellia seed powder was 120 meshes; and the mass ratio of okra powder to camellia seed powder was 10:3.2.

[0040] Fumigation treatment is: The mixed powder of okra and camellia seeds was fumigated by steam, specifically: Spread the mixed powder of okra and camellia seeds on the fumigation rack with a thickness of 0.5 cm, and continuously pass 100℃ steam. Turn it over every 10 minutes. After the fumigation is completed, place it in a drying oven for 4 hours at a drying temperature of 60℃.

[0041] The multi-stage supercritical carbon dioxide extraction process is as follows: It includes one-stage supercritical carbon dioxide treatment, two-stage supercritical carbon dioxide treatment, three-stage supercritical carbon dioxide treatment, and four-stage supercritical carbon dioxide treatment; Among them, the first stage of supercritical carbon dioxide treatment is: extraction for 20 minutes, the extraction pressure is maintained at 20MPa, the temperature is 42°C, and the carbon dioxide flow rate is 22L / h; The second stage of supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 22 MPa, temperature at 42 °C, carbon dioxide flow rate at 22 L / h; The three-stage supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 25 MPa, temperature at 45 °C, carbon dioxide flow rate at 25 L / h; The four-stage supercritical carbon dioxide treatment is as follows: extraction for 40 min, extraction pressure maintained at 28 MPa, temperature at 45°C, and carbon dioxide flow rate of 25 L / h.

[0042] The preparation method of yam soaking liquid is as follows: Peeling the yam and crushing it to obtain yam crushed material; The yam crushed material was mixed with water, stirred for 40 minutes, and then subjected to high-speed centrifugation for 15 minutes, and filtered to obtain a filtrate; The filtrate is concentrated to 5% of the original volume to obtain the product.

[0043] The mixing ratio of yam crushed material and water is 15g:150mL; The high-speed centrifugal rotation speed is 5500r / min.

[0044] Add each component to the mixer in turn and stir and mix for 1 hour, then discharge the material to obtain a mixed material, crush the mixed material, pass it through an 80-mesh sieve, and then bag it and seal it.

[0045] Example 4

[0046] A method for preparing a safe and nutritious antiseptic food additive, comprising weighing, by weight: 2.4 parts of okra extract compound, 0.6 parts of lentinan, 1.3 parts of yam soaking liquid, 4.1 parts of grape seed powder, 2.1 parts of corn silk, 2 parts of red date powder, 0.7 parts of vitamin C, and 0.16 parts of catechins; the particle size of the grape seed powder is 125 meshes; the particle size of the red date powder is 80 meshes; The preparation method of okra extract composite material is as follows: First, the okra is crushed to obtain okra powder; Grinding camellia seeds to obtain camellia seed powder; Add okra powder and camellia seed powder into a blender in sequence, and mix them evenly to obtain okra and camellia seed mixed powder; Among them, the stirring speed is 500r / min and the stirring time is 40min; The mixed powder of okra and camellia seeds is fumigated with water vapor for 30 minutes to obtain a fumigation material; The fumigated material was subjected to multi-stage supercritical carbon dioxide extraction treatment to obtain an okra extraction composite material. The average particle size of okra powder was 80 meshes; the average particle size of camellia seed powder was 120 meshes; and the mixing mass ratio of okra powder to camellia seed powder was 10:3.3.

[0047] Fumigation treatment is: The mixed powder of okra and camellia seeds was fumigated by steam, specifically: Spread the mixed powder of okra and camellia seeds on the fumigation rack with a thickness of 0.5 cm, and continuously pass 100℃ steam. Turn it over every 10 minutes. After the fumigation is completed, place it in a drying oven for 4 hours at a drying temperature of 60℃.

[0048] The multi-stage supercritical carbon dioxide extraction process is as follows: It includes one-stage supercritical carbon dioxide treatment, two-stage supercritical carbon dioxide treatment, three-stage supercritical carbon dioxide treatment, and four-stage supercritical carbon dioxide treatment; Among them, the first stage of supercritical carbon dioxide treatment is: extraction for 20 minutes, the extraction pressure is maintained at 20MPa, the temperature is 42°C, and the carbon dioxide flow rate is 22L / h; The second stage of supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 22 MPa, temperature at 42 °C, carbon dioxide flow rate at 22 L / h; The three-stage supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 25 MPa, temperature at 45 °C, carbon dioxide flow rate at 25 L / h; The four-stage supercritical carbon dioxide treatment is as follows: extraction for 40 min, extraction pressure maintained at 28 MPa, temperature at 45°C, and carbon dioxide flow rate of 25 L / h.

[0049] The preparation method of yam soaking liquid is as follows: Peeling the yam and crushing it to obtain yam crushed material; The yam crushed material was mixed with water, stirred for 40 minutes, and then subjected to high-speed centrifugation for 15 minutes, and filtered to obtain a filtrate; The filtrate is concentrated to 5% of the original volume to obtain the product.

[0050] The mixing ratio of yam crushed material and water is 15g:150mL; The high-speed centrifugal rotation speed is 5500r / min.

[0051] Add each component to the mixer in turn and stir and mix for 1 hour, then discharge the material to obtain a mixed material, crush the mixed material, pass it through an 80-mesh sieve, and then bag it and seal it.

[0052] Example 5

[0053] A method for preparing a safe and nutritious antiseptic food additive, comprising weighing, by weight, 2.5 parts of okra extract compound, 0.8 parts of lentinan, 1.5 parts of yam soaking liquid, 4.5 parts of grape seed powder, 3 parts of corn silk, 3 parts of red date powder, 1.2 parts of vitamin C, and 0.2 parts of catechins; the particle size of the grape seed powder is 125 meshes; the particle size of the red date powder is 80 meshes; The preparation method of okra extract composite material is as follows: First, the okra is crushed to obtain okra powder; Grinding camellia seeds to obtain camellia seed powder; Add okra powder and camellia seed powder into a blender in sequence, and mix them evenly to obtain okra and camellia seed mixed powder; Among them, the stirring speed is 500r / min and the stirring time is 40min; The mixed powder of okra and camellia seeds is fumigated with water vapor for 30 minutes to obtain a fumigation material; The fumigated material is subjected to multi-stage supercritical carbon dioxide extraction treatment to obtain an okra extraction composite material. The average particle size of okra powder is 80 meshes; the average particle size of camellia seed powder is 120 meshes; and the mixing mass ratio of okra powder to camellia seed powder is 10:4.

[0054] Fumigation treatment is: The mixed powder of okra and camellia seeds was fumigated by steam, specifically: Spread the mixed powder of okra and camellia seeds on the fumigation rack with a thickness of 0.5 cm, and continuously pass 100℃ steam. Turn it over every 10 minutes. After the fumigation is completed, place it in a drying oven for 4 hours at a drying temperature of 60℃.

[0055] The multi-stage supercritical carbon dioxide extraction process is as follows: It includes one-stage supercritical carbon dioxide treatment, two-stage supercritical carbon dioxide treatment, three-stage supercritical carbon dioxide treatment, and four-stage supercritical carbon dioxide treatment; Among them, the first stage of supercritical carbon dioxide treatment is: extraction for 20 minutes, the extraction pressure is maintained at 20MPa, the temperature is 42°C, and the carbon dioxide flow rate is 22L / h; The second stage of supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 22 MPa, temperature at 42 °C, carbon dioxide flow rate at 22 L / h; The three-stage supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 25 MPa, temperature at 45 °C, carbon dioxide flow rate at 25 L / h; The four-stage supercritical carbon dioxide treatment is as follows: extraction for 40 min, extraction pressure maintained at 28 MPa, temperature at 45°C, and carbon dioxide flow rate of 25 L / h.

[0056] The preparation method of yam soaking liquid is as follows: Peeling the yam and crushing it to obtain yam crushed material; The yam crushed material was mixed with water, stirred for 40 minutes, and then subjected to high-speed centrifugation for 15 minutes, and filtered to obtain a filtrate; The filtrate is concentrated to 5% of the original volume to obtain the product.

[0057] The mixing ratio of yam crushed material and water is 15g:150mL; The high-speed centrifugal rotation speed is 5500r / min.

[0058] Add each component to the mixer in turn and stir and mix for 1 hour, then discharge the material to obtain a mixed material, crush the mixed material, pass it through an 80-mesh sieve, and then bag it and seal it.

[0059] Comparative Example 1: The difference from Example 1 is that no okra extract compound is added, and the rest of the technical solutions remain unchanged.

[0060] Comparative Example 2: The difference from Example 1 is that no yam soaking liquid is added, and the rest of the technical solutions remain unchanged.

[0061] test Safety Testing: Safety tests were performed on the examples and comparative samples: Table 1

[0062] It can be seen from Table 1 that the food additive prepared by the present invention has higher safety.

[0063] The antibacterial rate of the food additives in the embodiments and comparative examples was tested: The antibacterial rate test method is based on GB15979-2002: Table 2

[0064] It can be seen from Table 2 that the antiseptic food additive prepared by the present invention has excellent antibacterial performance against Escherichia coli and can inhibit the growth of food bacteria; Table 3

[0065] It can be seen from Table 3 that the antiseptic food additive prepared by the present invention has excellent antibacterial performance against Aspergillus niger.

[0066] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safe and nutritious antiseptic food additive, characterized in that: The following ingredients are included by weight: Okra extract compound 2.0-2.5 parts, lentinan 0.3-0.8 parts, yam soaking liquid 1.2-1.5 parts, grape seed powder 3.5-4.5 parts, corn silk 2-3 parts, red date powder 1-3 parts, vitamin C 0.5-1.2 parts, catechin 0.12-0.2 parts.

2. A safe and nutritious antiseptic food additive according to claim 1, characterized in that: The preparation method of the okra extraction composite material is as follows: First, the okra is crushed to obtain okra powder; Grinding camellia seeds to obtain camellia seed powder; Add okra powder and camellia seed powder into a blender in sequence, and mix them evenly to obtain okra and camellia seed mixed powder; Among them, the stirring speed is 500r / min and the stirring time is 40min; The mixed powder of okra and camellia seeds is fumigated with water vapor for 30 minutes to obtain a fumigation material; The fumigation material is subjected to multi-stage supercritical carbon dioxide extraction treatment to obtain okra extraction composite material.

3. A safe and nutritious antiseptic food additive according to claim 2, characterized in that: The average particle size of the okra powder is 80 mesh; The average particle size of camellia seed powder is 120 mesh; The mixing mass ratio of okra powder and camellia seed powder is 10:3-4.

4. A safe and nutritious antiseptic food additive according to claim 2, characterized in that: The fumigation treatment is: The mixed powder of okra and camellia seeds was fumigated by steam, specifically: Spread the mixed powder of okra and camellia seeds on the fumigation rack with a thickness of 0.5 cm, and continuously pass 100℃ steam. Turn it over every 10 minutes. After the fumigation is completed, place it in a drying oven for 4 hours at a drying temperature of 60℃.

5. A safe and nutritious antiseptic food additive according to claim 2, characterized in that: The multi-stage supercritical carbon dioxide extraction process is as follows: It includes one-stage supercritical carbon dioxide treatment, two-stage supercritical carbon dioxide treatment, three-stage supercritical carbon dioxide treatment, and four-stage supercritical carbon dioxide treatment; Among them, the first stage of supercritical carbon dioxide treatment is: extraction for 20 minutes, the extraction pressure is maintained at 20MPa, the temperature is 42°C, and the carbon dioxide flow rate is 22L / h; The second stage of supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 22 MPa, temperature at 42 °C, carbon dioxide flow rate at 22 L / h; The three-stage supercritical carbon dioxide treatment is as follows: extraction for 35 min, extraction pressure maintained at 25 MPa, temperature at 45 °C, carbon dioxide flow rate at 25 L / h; The four-stage supercritical carbon dioxide treatment is as follows: extraction for 40 min, extraction pressure maintained at 28 MPa, temperature at 45°C, and carbon dioxide flow rate of 25 L / h.

6. A safe and nutritious antiseptic food additive according to claim 1, characterized in that: The preparation method of the yam soaking liquid is as follows: Peeling the yam and crushing it to obtain yam crushed material; The yam crushed material was mixed with water, stirred for 40 minutes, and then subjected to high-speed centrifugation for 15 minutes, and filtered to obtain a filtrate; The filtrate is concentrated to 5% of the original volume to obtain the product.

7. A safe and nutritious antiseptic food additive according to claim 6, characterized in that: The mixing ratio of the yam crushed material and water is 15g:150mL; The high-speed centrifugal rotation speed is 5500r / min.

8. The safe and nutritious antiseptic food additive according to claim 1, characterized in that: The grape seed powder has a particle size of 125 mesh; The red date powder has a particle size of 80 meshes.

9. The method for preparing a safe and nutritious antiseptic food additive according to claim 1, characterized in that: Weigh the following according to weight: okra extract compound, lentinan, yam soaking liquid, grape seed powder, corn silk, red date powder, vitamin C, and catechins; Add each component to the mixer in turn and stir and mix for 1 hour, then discharge the material to obtain a mixed material, crush the mixed material, pass it through an 80-mesh sieve, and then bag it and seal it.

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