Organic salt special for mothers and infants as well as preparation method and application of organic salt

Abstract

The invention discloses organic salt special for mothers and infants and a preparation method of the organic salt, and belongs to the field of food. An organic mineral complex; a prebiotic component; a stabilizer; and an anti-caking agent. The stable nano-composite is formed by adopting a solid state fermentation-ultrasonic assembly two-stage process, and the bioavailability of calcium reaches 41.7-51.0% and is nearly doubled compared with that of traditional inorganic salt; the release rate of the iodine element in the simulated gastric juice environment within 4 hours is controlled to be 85-90%, the slow release effect is achieved, effective absorption is guaranteed, burst release metabolism burden is avoided, and the effects that the product stability is comprehensively improved, the safety advantage is obvious, the process controllability is high, and targeted nutrition design is achieved are achieved.

Description

Technical Field

[0001] This invention relates to the food industry, specifically to organic baby-specific salt, its preparation method, and its application. Background Technology

[0002] Infants, young children, and pregnant women have specific needs for the minerals in table salt. Currently, commercially available salt is primarily fortified with inorganic minerals, such as potassium iodide and calcium carbonate. However, these inorganic minerals have low bioavailability and poor gastrointestinal tolerance. Studies have shown that inorganic iodides are easily lost through volatilization during high-temperature cooking, making it difficult to control actual intake; while inorganic calcium salts such as calcium carbonate generally have an absorption rate of less than 30% in the underdeveloped digestive systems of infants and young children, and may cause gastrointestinal discomfort.

[0003] While traditional organic fortified salts have improved mineral stability to some extent, they still face technical bottlenecks: simple physical mixing of organic minerals is prone to component separation, resulting in poor product uniformity; conventional processes struggle to achieve efficient binding of minerals with carrier proteins / peptides, affecting targeted release into the gut; and existing products lack systematic design for the specific nutritional needs of infants and young children, such as the synergistic effect of minerals and prebiotics, and the development of hypoallergenic formulas.

[0004] In terms of preparation process, ordinary mixing methods cannot achieve uniform dispersion at the nanoscale. Most mineral particles are at the micron level, which affects sensory characteristics and reduces bioavailability. Moreover, high-temperature processing can easily destroy heat-labile organic components such as prebiotics and active peptides, which seriously restricts the development of high-quality maternal and infant-specific salt.

[0005] Therefore, those skilled in the art have provided organic maternal and infant-specific salts and their preparation methods to address the problems mentioned in the background section. Summary of the Invention

[0006] The purpose of this invention is to provide organic baby-specific salt and its preparation method to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] Organic baby-specific salt and its preparation method, comprising raw materials with the following components:

[0009] Organic base salt: ≥97% by weight, selected from organic sun-dried sea salt, rock salt or lake salt;

[0010] Organic mineral complex: prepared from organic iodine, organic calcium, and organic peptides via solid-state fermentation-ultrasonic assembly process, wherein: the organic iodine content is 5-10 mg / Kg, selected from seaweed iodine, iodinated casein, or fermented plant peptide-iodine chelates; the organic calcium content is 5-10 mg / Kg, selected from calcium citrate malate, seaweed calcium, or yeast β-glucan chelated calcium; the organic peptide content is 5-10 mg / Kg, selected from germinated brown rice peptides, hydrolyzed lactoferrin peptides, or marine collagen oligopeptides, with a molecular weight ≤800 Da;

[0011] Prebiotic components: 0.1-0.5%, selected from fructooligosaccharides, galactooligosaccharides or human milk oligosaccharides;

[0012] Stabilizer: content 0.05-0.2%, selected from organic citric acid, ascorbic acid or natural tocopherol;

[0013] Anti-caking agent: content ≤0.1%, selected from organic rice husk silica or microcrystalline cellulose;

[0014] The mass ratio of the organic iodine, organic calcium, and organic peptides is (1-1.2):(1.5-1.8):1, and the total amount of the three added is ≤0.5%.

[0015] As a further aspect of the present invention: the preparation method of the organic-mineral complex includes the following steps:

[0016] Step (a) Solid-state fermentation: Organic iodine source, organic calcium source and plant fermentation carrier are fermented for 48-72 hours under the conditions of pH 4.0-5.5 and temperature 35-40℃;

[0017] Step (b) Ultrasonic assembly: Fermentation products and hydrolyzed peptides are subjected to nano-self-assembly under the assistance of ultrasound at 20-40kHz and 300-500W.

[0018] Step (c) Low-temperature compounding: The peptide-mineral complex is mixed with the organic base salt under inert gas protection and at a temperature ≤45°C.

[0019] As a further embodiment of the present invention: the solid-state fermentation uses a mixed microbial community of Lactobacillus plantarum and Saccharomyces cerevisiae, with an inoculation ratio of 2:1, and 0.01-0.05% of organosilicon defoamer is added during the fermentation process; the prebiotic is 2'-fucosylated lactose or lactose-N-neotetrasaccharide, with a content of 0.2-0.3%; the stabilizer is a complex of ascorbate palmitate and natural tocopherol, with a mass ratio of 1:1; the molecular weight of the organic peptide is ≤500 Da, and the amino acid sequence contains at least 30% of the essential amino acids.

[0020] As a further aspect of the present invention: the organic maternal and infant special salt has a mineral release rate of ≥85% in 0.9% physiological saline.

[0021] As a further embodiment of the present invention: the average particle size of the organic-mineral complex is ≤100nm and the absolute value of the Zeta potential is ≥30mV.

[0022] The preparation method of organic baby-specific salt includes the following steps:

[0023] Step (1) Activation of strains: Inoculate Lactobacillus plantarum and Saccharomyces cerevisiae into MRS medium at a ratio of 2:1 and incubate at 37°C for 24 hours;

[0024] Step (2) Solid-state fermentation: Mix the activated strain with organic iodine source, organic calcium source and plant fermentation carrier, control the pH to 4.0-5.5 and the temperature to 35-40℃, and ferment for 48-72 hours;

[0025] Step (3) Ultrasonic assembly: Mix the fermentation product with the hydrolyzed peptide and treat it under ultrasonic conditions of 20-40kHz and 300-500W for 30-60 minutes, while adding 0.01-0.05% organosilicon defoamer.

[0026] Step (4) Low-temperature drying: The assembled product is dried at 40-45℃ and vacuum degree -0.08MPa until the moisture content is ≤5%;

[0027] Step (5) Compound mixing: Mix the dried product with prebiotics, stabilizers, anti-caking agents and organic base salts under nitrogen protection and relative humidity ≤30% for 20-30 minutes;

[0028] Step (6) Packaging: Use light-proof packaging materials and seal with nitrogen filling.

[0029] As a further aspect of the present invention: the ultrasonic treatment in step (3) adopts a pulse mode with a working cycle of 5s on / 2s off, and the composite mixing process in step (5) adopts a three-dimensional motion mixer with a rotation speed of 10-15 rpm.

[0030] As a further aspect of the present invention, it also includes a quality inspection step: using a laser particle size analyzer to detect the particle size of the composite, HPLC to detect the organic iodine content, and atomic absorption spectroscopy to detect the calcium content, to ensure that the content of each component meets the range described in claim 1, and during the drying process in step (4), the material temperature is monitored in real time to ensure that it does not exceed 45°C.

[0031] As a further aspect of the present invention: in step (6), ultraviolet disinfection is performed before packaging, with the dosage controlled at 5-10 mJ / cm². 2 The preparation method is carried out entirely in a GMP cleanroom, with an environmental cleanliness level of 100,000.

[0032] An application of an organic mother and baby-specific salt for the preparation of infant food additives or nutritional supplements for pregnant women, as well as for improving poor mineral absorption in infants or preventing calcium deficiency symptoms in pregnant women.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. Significantly improved mineral absorption and utilization: A stable nanocomposite is formed by a two-stage process of solid-state fermentation and ultrasonic assembly, which achieves a calcium bioavailability of 41.7-51.0%, nearly double that of traditional inorganic salts; the release rate of iodine is controlled at 85-90% in a simulated gastric juice environment after 4 hours, achieving a sustained-release effect, which ensures effective absorption and avoids the metabolic burden of sudden release.

[0035] 2. Enhanced product stability: The unique composite structure and scientifically formulated stabilizer system ensure that the iodine retention rate remains at 86.7-89.2% after 6 months of storage, which is much higher than the 62.4% of the control group. The product can also maintain its stability under high temperature and high humidity conditions.

[0036] 3. Significant safety advantages: Animal experiments show that the product's irritation score to the gastric mucosa is only 0.4-0.7, significantly lower than the control group's 2.3; allergen test results are all "not detected" or "<0.5μg / g", fully meeting the food safety standards for infants and young children.

[0037] 4. Strong process controllability: Through parameter optimization (such as 35-40kHz ultrasonic frequency, 38℃ fermentation temperature, etc.), the relative standard deviation between batches is controlled at 3.2-4.1%, which is much lower than the 6.2-8.5% of the control group; low temperature operation (≤45℃) effectively protects the activity of heat-sensitive components.

[0038] 5. Targeted nutritional design: The formula for pregnant women reduces the incidence of cramps during pregnancy by 63% through vitamin D3 microencapsulation and optimized calcium content; the fast-absorbing formula shortens the time for minerals to reach peak concentration to 2.5 hours through ultrafiltration of small molecule peptides and enzymatic hydrolysis technology, making it suitable for infants and young children with weak digestive functions. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1: Basic seaweed-derived formula

[0041] 1. Formula composition:

[0042] Organic sun-dried sea salt (As≤0.3mg / kg): 99.42%

[0043] Fucoidan compound iodine (iodine content 25.8±0.5%): 6.2 mg / kg

[0044] Red algae calcium (calcium content 32.1%): 8.5 mg / kg

[0045] Marine collagen oligopeptides (450 Da): 5.8 mg / kg

[0046] 2'-Fucose-based lactose: 0.25%

[0047] Ascorbyl palmitate: 0.08%

[0048] Organic rice husk silicon: 0.07%

[0049] 2. Preparation method:

[0050] Step (1) Activation of strain: Inoculate MRS medium with Lactobacillus plantarum: Saccharomyces cerevisiae = 2:1 and incubate at 37℃ for 24h; Step (2) Solid-state fermentation: After mixing the raw materials, ferment at 38℃ for 60h, pH 4.8±0.2;

[0051] Step (3) Ultrasonic assembly: 35kHz / 400W pulse processing for 45min (working cycle 5s on / 2s off);

[0052] Step (4) Low-temperature drying: Dry at 40℃ and vacuum degree -0.08MPa until the moisture content is ≤5%;

[0053] Step (5) Final mixing: Mix for 25 minutes in a three-dimensional mixer under nitrogen protection and relative humidity ≤30%;

[0054] Step (6) Packaging: The material is sealed with nitrogen-filled, light-proof material. Before packaging, it is subjected to a nitrogen-filled seal with a pressure of 5-10 mJ / cm². 2 Ultraviolet disinfection.

[0055] 3. Experimental conditions:

[0056] Fermentation tank: B-DCU system, dissolved oxygen ≥30%

[0057] Ultrasonic instrument: Sonics VCX750, ±1℃ water bath temperature control; testing environment: temperature 25±2℃, humidity 50±5%.

[0058] 4. Experimental data:

[0059] Testing items result Method Standard Average particle size 82±5nm ISO 22412 Iodine retention rate 91.3±0.8％ GB 5009.267 Apparent calcium absorption rate 41.7±2.1％ rat perfusion experiment Acute oral toxicity LD50 > 5000 mg / kg GB 15193.3

[0060] Example 2: Plant-based fermented formula

[0061] 1. Formula composition:

[0062] Organic rock salt: 99.37%

[0063] Soybean peptide-iodine chelate: 7.1 mg / kg

[0064] Yeast β-glucan calcium: 9.2 mg / kg

[0065] Germinated brown rice peptides (380 Da): 6.3 mg / kg

[0066] Galacto-oligosaccharides: 0.3%

[0067] Natural tocopherol: 0.1%

[0068] Microcrystalline cellulose: 0.05%

[0069] 2. Preparation method:

[0070] Step (1) Activation of the strain: Same as in Example 1;

[0071] Step (2) Solid-state fermentation: Aspergillus oryzae is mixed with activated strains and fermented at 30℃ for 48h. Iodine source is added and fermented at 38℃ for 60h. pH 4.5±0.2.

[0072] Step (3) Ultrasonic assembly: 40kHz / 350W continuous mode for 30min, add 0.03% silicone defoamer;

[0073] Step (4) Low-temperature drying: Dry at 45℃ and vacuum degree -0.08MPa until the moisture content is ≤5%;

[0074] Step (5) Final mixing: Same as in Example 1, mix for 20 min;

[0075] Step (6) Packaging: Same as in Example 1.

[0076] 3. Experimental conditions:

[0077] Fermentation system: BIOTECH-2005JS parallel fermenter

[0078] Ultrafiltration membrane: 10kDa tangential flow filtration

[0079] Testing equipment: Malvern Nano-ZS90

[0080] 4. Experimental data:

[0081] Testing items result Remark Iron absorption rate 39.8±1.8％ Caco-2 model allergens Not detected ELISA testing Fermentation conversion rate 92.5±1.2％ HPLC method 6 months of stability 87.5±0.7％ Accelerated testing

[0082] Example 3: High Peptide Content Formula

[0083] 1. Formula composition:

[0084] Organic lake salt: 99.36%

[0085] Iodized casein: 5.5 mg / kg

[0086] CPP calcium: 10.0 mg / kg

[0087] Hydrolyzed lactoferrin peptide: 9.8 mg / kgL; NnT: 0.4%

[0088] Lecithin: 0.15%

[0089] Rice husk silicon: 0.09%

[0090] 2. Preparation method:

[0091] Step (1) Activation of the strain: Same as in Example 1;

[0092] Step (2) Solid-state fermentation: Ferment at 35℃ for 72 hours, pH 5.0±0.2;

[0093] Step (3) Ultrasonic assembly: 30kHz / 300W pulse treatment for 60min (25℃ water bath); Step (4) Low temperature drying: 42℃, vacuum degree -0.08MPa drying until moisture content ≤5%; Step (5) Final mixing: Same as Example 1, mix for 30min;

[0094] Step (6) Packaging: Same as in Example 1.

[0095] 3. Experimental conditions:

[0096] Freeze dryer: Christ Alpha 2-4LDplus

[0097] Cleanroom monitoring: Particle count ≤ 352,000 / m³ 3

[0098] Antibacterial test: Oxford cup method (37℃ / 24h)

[0099] 4. Experimental data:

[0100] Testing items result Standard requirements Antibacterial activity 8.2±0.5mm Escherichia coli ATCC25922 Peptide retention rate ≥85％ pepsin digestion water activity 0.51±0.02 GB 5009.238

[0101] Example 4: Rapidly Absorbed Formula

[0102] 1. Formula composition:

[0103] Organic sea salt: 99.43%

[0104] Seaweed iodine: 5.8 mg / kg

[0105] Calcium citrate malate: 8.0 mg / kg

[0106] Ultrafiltration whey peptides (280 Da): 7.5 mg / kg

[0107] 2'-FL: 0.2%

[0108] Bromelain: 0.1%

[0109] Anti-caking agent: 0.07%

[0110] 2. Preparation method:

[0111] Step (1) Activation of the strain: Same as in Example 1;

[0112] Step (2) Solid-state fermentation: Ferment at 37℃ for 50 hours, pH 4.7±0.2;

[0113] Step (3) Ultrasonic assembly: 38kHz / 450W pulse treatment for 40min, enzymatic hydrolysis treatment at 37℃ for 2h (enzyme activity ≥500U / mg);

[0114] Step (4) Low-temperature drying: Dry at 43℃ and vacuum degree -0.08MPa until the moisture content is ≤5%;

[0115] Step (5) Final mixing: Same as in Example 1, mix for 25 min;

[0116] Step (6) Packaging: Same as in Example 1.

[0117] 3. Experimental conditions:

[0118] Enzymatic hydrolysis tank: pH 7.0±0.1, automatic control.

[0119] Ultrafiltration system: Millipore Pellicon 2

[0120] Drying tower: Büchi B-290

[0121] 4. Experimental data:

[0122]

[0123]

[0124] Example 5: Formula for Pregnant Women

[0125] 1. Formula composition:

[0126] Low-sodium rock salt: 99.30%

[0127] Fucoidan iodine: 6.5 mg / kg

[0128] Algae calcium: 12.0 mg / kg

[0129] Casein peptides: 8.2 mg / kg; HMO mixture: 0.35%

[0130] Vitamin D3 microcapsules: 0.1%

[0131] Anti-caking agent: 0.05%

[0132] 2. Preparation method:

[0133] Step (1) Activation of the strain: Same as in Example 1;

[0134] Step (2) Solid-state fermentation: Ferment at 36℃ for 65 hours, pH 4.6±0.2;

[0135] Step (3) Ultrasonic assembly: 32kHz / 380W pulse treatment for 50min, W / O / W double emulsification method to prepare microcapsules; Step (4) Low temperature drying: 35℃, vacuum degree -0.08MPa drying until moisture content ≤5%;

[0136] Step (5) Final mixing: Mix for 28 minutes at ≤35℃ under nitrogen protection;

[0137] Step (6) Packaging: Same as in Example 1.

[0138] 3. Experimental conditions:

[0139] Emulsification equipment: IKA T25 high-speed homogenizer; UV dosimeter: UV-340A

[0140] Clinical monitoring: Double-blind trial (n=50)

[0141] 4. Experimental data:

[0142] Testing items experimental group control group p-value Pregnancy-induced hypertension 6％ 18％ <0.01 Blood calcium target achievement rate 92％ 67％ <0.001 Sodium intake Reduce by 15% - -

[0143] Comparative Example 1: Inorganic Salt Comparative Formula

[0144] 1. Formula composition:

[0145] Refined salt (GB 2721) 99.7%;

[0146] Potassium iodide 6.0 mg / kg;

[0147] Calcium carbonate 8.0 mg / kg;

[0148] Maltodextrin 0.3%;

[0149] 2. Preparation method:

[0150] (1) Dry mixing: Put all raw materials into a V-type mixer.

[0151] (2) Mixing at room temperature: Mix at 25℃ for 30 minutes at a speed of 20 rpm.

[0152] (3) Sieving: Passing through an 80-mesh stainless steel sieve.

[0153] (4) Packaging: Ordinary PE bag packaging;

[0154] 3. Technological characteristics:

[0155] No special treatment process was used, and the ambient humidity was not controlled (actual measured RH 45-65%).

[0156] Uniformity: RSD = 8.2% (n = 10)

[0157] Comparative Example 2: Simple Mixture of Organic Salts

[0158] 1. The formula composition is the same as in Example 1;

[0159] 2. Preparation method:

[0160] (1) Physical mixing: All raw materials are fed into the mixer at once.

[0161] (2) Mixing at room temperature: Mix at 30℃ for 40 minutes

[0162] (3) Packaging: Ordinary aluminum foil bag packaging;

[0163] 3. Technological characteristics:

[0164] Eliminate fermentation and sonication steps

[0165] Mixing uniformity: RSD = 5.7% (n = 10)

[0166] No inert gas protection was used.

[0167] Experimental data comparison table (5 sets of example cases and 2 sets of control cases)

[0168]

[0169]

[0170] Data analysis shows that:

[0171] Example 1: The highest iodine retention rate (89.2±0.8%) was observed, verifying the stability advantage of the basic formula;

[0172] Example 4: The highest calcium bioavailability (51.0%) and the shortest time to peak concentration (2.5±0.3h) highlight its rapid absorption characteristics;

[0173] Example 5: Clinical data showed that the incidence of gestational hypertension was 6% (18% in the control group) and the rate of achieving the target blood calcium level was 92% (67% in the control group), verifying the compatibility during pregnancy;

[0174] Compared with the control example: The example, through solid-state fermentation-ultrasonic assembly process, solved the problems of low bioavailability and high irritation of control example 1 (inorganic salt), and overcame the defects of large particle size and insufficient stability of control example 2 (simple mixture), proving the necessity of process innovation.

[0175] The five examples respectively verify the universality and specificity of the technical solution from multiple dimensions such as raw material source (seaweed / plant / whey), functional requirements (basic / rapid absorption / pregnancy), and process parameters (ultrasonic mode / fermentation time / drying temperature), forming a complete chain of technical evidence.

[0176] By comparing Example 2 (fermentation-ultrasonic process omitted) with Example 1, it was shown that the particle size of the composite decreased from 350 nm to 82 nm, and the calcium absorption rate increased from 31.6% to 41.7%, directly proving that the solid-state fermentation-ultrasonic assembly process is the core means to achieve nano-dispersion and high bioavailability.

[0177] Precisely tailored for mothers and infants: Targeting the special needs of infants with weak digestion and pregnant women with sodium sensitivity, the formula is adjusted (small molecule peptides, low-sodium matrix) and the process is optimized (low-temperature protection, microencapsulation) to achieve a precise match between product function and the needs of the target population, highlighting the design concept of "customized nutrition".

[0178] The comparative data of the above embodiments and control examples show that the present invention significantly improves the mineral bioavailability, stability and safety of the mother and baby special salt through formula innovation and process optimization, and has outstanding technical advantages.

[0179] This invention, through innovative formulation design (scientific combination of organic mineral complexes with prebiotics and stabilizers) and preparation process (solid-state fermentation-ultrasonic assembly two-stage process and low-temperature composite technology), successfully solves the technical pain points of existing maternal and infant salts, providing an organic maternal and infant-specific salt with high bioavailability, good stability, high safety, and suitability for the special needs of mothers and infants, as well as its preparation method. This product not only meets the needs of mothers and infants for efficient mineral absorption but also has good storage stability and food safety, possessing significant practical value and market potential.

[0180] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. Organic mother and baby salt, characterized in that: It is prepared by the following components: Organic base salt: mass ratio ≥97%, selected from organic solar sea salt, rock salt or lake salt; Organic mineral complex: prepared by organic iodine, organic calcium and organic peptide through solid-state fermentation-ultrasonic assembly process, wherein: the content of organic iodine is 5-10 mg / Kg, selected from seaweed iodine, iodized casein or fermented plant peptide-iodine chelate; the content of organic calcium is 5-10 mg / Kg, selected from calcium citrate malate, seaweed calcium or yeast β-glucan chelated calcium; the content of organic peptide is 5-10 mg / Kg, selected from germinated brown rice peptide, hydrolyzed lactoferrin peptide or marine collagen oligopeptide, with a molecular weight of ≤800 Da; Prebiotic component: content 0.1-0.5%, selected from oligofructose, galactooligosaccharide or human milk oligosaccharide; Stabilizer: content 0.05-0.2%, selected from organic citric acid, ascorbic acid or natural tocopherol; Anti-caking agent: content ≤0.1%, selected from organic rice hull silicon or microcrystalline cellulose; Wherein, the mass ratio of the organic iodine, organic calcium and organic peptide is (1-1.2):(1.5-1.8):1, and the total addition amount of the three is ≤0.5%.

2. The organic mother and baby specific salt according to claim 1, characterized by: The preparation method of the organic mineral complex comprises the following steps: Step (a) solid-state fermentation: ferment the organic iodine source, organic calcium source and plant fermentation carrier at pH 4.0-5.5 and temperature 35-40℃ for 48-72 hours; Step (b) ultrasonic assembly: perform nano self-assembly of the fermentation product and hydrolyzed peptide under the assistance of ultrasonic waves at 20-40 kHz and 300-500 W; Step (c) low-temperature compounding: mix the peptide-mineral complex and organic base salt under the protection of inert gas and at a temperature ≤45℃.

3. The organic mother and baby specific salt as claimed in claim 1, wherein: The solid-state fermentation uses a mixed bacterial population of Lactobacillus plantarum and Saccharomyces cerevisiae with an inoculation amount ratio of 2:1, and 0.01-0.05% of organic silicon defoaming agent is added during the fermentation process; the prebiotic is 2'-fucosyllactose or lacto-N-neotetraose with a content of 0.2-0.3%; the stabilizer is a complex of ascorbyl palmitate and natural tocopherol with a mass ratio of 1:1, the molecular weight of the organic peptide is ≤500 Da, and the amino acid sequence contains at least 30% of essential amino acids.

4. The organic mother and baby specific salt as claimed in claim 1, wherein: The organic maternal and infant special salt has a mineral release rate ≥85% in 0.9% physiological saline.

5. The organic mother and baby specific salt as claimed in claim 1, wherein: The average particle size of the organic mineral complex is ≤100 nm, and the absolute value of Zeta potential is ≥30 mV.

6. A method for preparing organic mother and baby special salt, applied to the organic mother and baby special salt according to any one of claims 1-5, characterized in that: It comprises the following steps: Step (1) strain activation: inoculate Lactobacillus plantarum and Saccharomyces cerevisiae into MRS culture medium at a ratio of 2:1, and cultivate at 37℃ for 24 hours; Step (2) solid-state fermentation: mix the activated strains with organic iodine source, organic calcium source and plant fermentation carrier, control pH 4.0-5.5 and temperature 35-40℃, and ferment for 48-72 hours; Step (3) ultrasonic assembly: mix the fermentation product with hydrolyzed peptide, and treat under the condition of ultrasonic waves at 20-40 kHz and 300-500 W for 30-60 minutes, while adding 0.01-0.05% of organic silicon defoaming agent; Step (4) low temperature drying: drying the assembled product at 40-45°C, vacuum degree -0.08 MPa, until moisture ≤5%; Step (5) composite mixing: mixing the dried product with prebiotics, stabilizers, anti-caking agents and organic base salts under nitrogen protection, relative humidity ≤30%, for 20-30 minutes; Step (6) packaging: using light-proof packaging materials, nitrogen sealing.

7. The method of producing organic mother and baby specific salt as claimed in claim 6, wherein: The ultrasonic treatment in step (3) adopts pulse mode, with a working cycle of 5s on / 2s off, and the composite mixing process in step (5) adopts a three-dimensional motion mixer, with a rotation speed of 10-15 rpm.

8. The method of producing organic mother and baby specific salt as claimed in claim 6, wherein: It also includes a quality detection step: using a laser particle size analyzer to detect the particle size of the composite, HPLC to detect the organic iodine content, and atomic absorption spectrometry to detect the calcium content, to ensure that the content of each component meets the range specified in claim 1, and the material temperature is monitored in real time during the drying process in step (4) to ensure that it does not exceed 45°C.

9. The method of producing organic mother and baby specific salt as claimed in claim 6, wherein: The step (6) is subjected to ultraviolet disinfection treatment before packaging, and the dose is controlled at 5-10 mJ / cm 2 The preparation method is performed in a GMP clean workshop, and the environmental cleanliness reaches 100,000-level standard.

10. Use of the organic mother and baby salt according to any one of claims 1 to 5, characterized in that: For preparing infant complementary food additives or pregnant women nutritional supplements, and for improving mineral malabsorption in infants or preventing calcium deficiency symptoms during pregnancy in pregnant women. For preparing infant complementary food additives or pregnant women nutritional supplements, and for improving mineral malabsorption in infants or preventing calcium deficiency symptoms during pregnancy in pregnant women.

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