CN114343160A - Zinc-rich sea salt and preparation method thereof - Google Patents
Zinc-rich sea salt and preparation method thereof Download PDFInfo
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- CN114343160A CN114343160A CN202111675735.0A CN202111675735A CN114343160A CN 114343160 A CN114343160 A CN 114343160A CN 202111675735 A CN202111675735 A CN 202111675735A CN 114343160 A CN114343160 A CN 114343160A
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Abstract
The application discloses zinc-rich sea salt and a preparation method thereof, belongs to the technical field of salt preparation, and comprises the following raw materials: edible sea salt, additive and Concha Ostreae powder; 10000 parts by weight of edible sea salt is taken as a reference, the addition amount of the additive is 0.1-1 part by weight, and the addition amount of the oyster powder is 2-20 parts by weight. The zinc-rich sea salt has high zinc content, retains the nutritional components of Concha Ostreae powder, and is nutritious; the preparation method can ensure that the distribution uniformity of the oyster powder in the salt is good, improve the binding force of the oyster powder and salt particles, effectively reserve the nutrient components of the oyster powder, has low production cost and is suitable for industrial popularization.
Description
Technical Field
The application relates to zinc-rich sea salt and a preparation method thereof, belonging to the technical field of salt preparation.
Background
Common salt, which contains sodium chloride as a main component, plays a very important role in cooking. The salt not only can be used for seasoning and increasing freshness, but also is an indispensable part for maintaining human life. Salt intake is proportional to blood pressure level, i.e. the more salt intake the higher the blood pressure level. The main component of the salt is sodium chloride, about 3-5 g of sodium chloride is needed by adults every day, and excessive intake can cause the increase of intravascular pressure, increase resistance, aggravate heart load, and cause diseases such as heart and kidney dysfunction and the like. The World Health Organization (WHO) recommends that less than 6g of salt be taken per person per day to prevent coronary heart disease and high blood levels. The existing edible salt has single component and limited nutrient elements, and can not meet the diversified demands of people.
Zinc element is beneficial to health and improves intelligence, and is called life flower. The zinc element is added into the edible salt, which is beneficial to physical and mental health, so that more nutrient components can be taken by human bodies, but the problems of uneven dispersion, damage to other nutrient components and loss of the zinc element are easily caused by the zinc-containing raw material selected in the prior art and the method for adding the zinc element, and finally the prepared salt is low in zinc content and high in cost, and is difficult to industrially popularize.
Disclosure of Invention
In order to solve the problems, the zinc-rich sea salt and the preparation method thereof are provided, the zinc-rich sea salt has high zinc content, maintains the nutrient components of the oyster powder, and has rich nutrition; the preparation method can ensure that the distribution uniformity of the oyster powder in the salt is good, improve the binding force of the oyster powder and salt particles, effectively reserve the nutrient components of the oyster powder, has low production cost and is suitable for industrial popularization.
According to one aspect of the application, the zinc-rich sea salt is prepared from the following raw materials: edible sea salt, additive and Concha Ostreae powder; 10000 parts by weight of edible sea salt is taken as a reference, the addition amount of the additive is 0.1-1 part by weight, and the addition amount of the oyster powder is 2-20 parts by weight.
Optionally, on the basis of 10000 parts by weight of edible sea salt, the addition amount of the additive is 0.4-0.8 part by weight, and the addition amount of the oyster powder is 5-10 parts by weight.
Preferably, the additive is added in an amount of 0.4-0.5 parts by weight and the oyster powder is added in an amount of 5-5.5 parts by weight based on 10000 parts by weight of edible sea salt.
Optionally, preparing the edible sea salt and additives to obtain pre-prepared salt, and preparing the pre-prepared salt and oyster powder to obtain the zinc-rich sea salt; the average particle size of the prepared salt is 20-80 meshes.
Optionally, the additive is potassium iodate.
According to another aspect of the present application, there is provided a method for preparing the above zinc-rich sea salt, comprising the steps of:
s1: preparation of salt preforms
(1) Pouring the additive into a stirring container, adding water, stirring for melting, and adding the additive solution into the edible sea salt;
(2) drying the edible sea salt containing the additive prepared in the step (1), and sieving the dried edible sea salt containing the additive to obtain prefabricated salt with the particle size of 20-80 meshes;
s2: preparation of oyster powder solution
Mixing Concha Ostreae powder with water to obtain Concha Ostreae powder solution, heating and stirring;
s3: preparation of the end product
And (5) spraying the oyster powder solution obtained in the step (S2) to the surface of the preformed salt prepared in the step (S1) by using a spraying device, drying the sprayed preformed salt, and drying to obtain the zinc-rich sea salt.
Alternatively, the stirring temperature in (1) of the step S1 is 55-65 ℃, and the drying temperature in (2) of the step S1 is 110-140 ℃.
Optionally, the oyster powder content in the oyster powder solution of step S2 is 20-30 wt%.
Optionally, in step S2, the heating temperature is 55-65 deg.C, and the stirring time is 10-20 min.
Optionally, in step S3, the spraying amount of the oyster powder solution is 1-5% of the weight of the preformed salt, and the drying temperature is 70-90 deg.C.
Alternatively, the spraying conditions in step S3 are: the flow of the fan is 80-90m3Min, the wind pressure of a fan is 1.0-1.2kPa, the solution conveying speed is 20-40mL/min, and the air inlet temperature is 40-60 ℃.
In the present application, "water" refers to purified water.
Benefits of the present application include, but are not limited to:
1. according to the zinc-rich sea salt, the zinc content of the zinc-rich sea salt is high and can reach over 220mg/kg, the nutritional ingredients of the oyster powder are reserved by limiting the quality of the used oyster powder, the loss of zinc element is reduced, and the nutrition is rich.
2. According to the preparation method of the zinc-rich sea salt, the distribution uniformity of the oyster powder in the salt is good, the binding force of the oyster powder and salt particles is improved, the nutritional ingredients of the oyster powder are effectively reserved, the production cost is low, and the preparation method is suitable for industrial popularization.
3. According to the preparation method of the zinc-rich sea salt, the distribution uniformity of the oyster powder in the preformed salt is favorably improved by limiting the addition amount of the oyster powder and the particle size of the preformed salt; by limiting the heating temperature and the drying temperature, the dissolution can be accelerated, and the nutrient components of the oyster powder can be prevented from being damaged; through using the spraying method to spray oyster powder solution to the surface of prefabricated salt, inject the spraying condition simultaneously, can improve the oyster powder and at the surperficial homogeneity of spraying of prefabricated salt, improve the cohesion of oyster powder and prefabricated salt granule, the effectual nutrient composition who remains the oyster powder can improve production efficiency again, reduce cost.
4. According to the preparation method of the zinc-rich sea salt, the method is simple to operate, low in labor and raw material cost, high in safety and practicability and suitable for industrial popularization.
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The reagents or starting materials used in the present invention can be purchased from conventional sources, and unless otherwise specified, the reagents or starting materials used in the present invention can be used in a conventional manner in the art or in accordance with the product specifications. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention. The preferred methods and materials described in this invention are exemplary only.
The equipment used in the application, such as the iodizing machine, the vacuum pump, the spraying machine, the stirrer and the like, are conventional equipment, and the electronic scale of the automatic iodizing machine can automatically adjust the content of the additive according to the amount of wet salt, wherein the specific content is implemented according to industry and national standards known by technical personnel in the field.
In addition, the oyster powder used in the present application is commercially available, and the oyster powder needs to have the following conditions:
(1) sensory requirement of oyster powder
Color: white to milk white or light yellow, and uniform color.
Taste and smell: has the original smell and taste of oyster powder, and has no burnt smell, rancidity and other odors.
Tissue morphology: dried into uniform powder or granules, loose and without agglomeration.
The reconstitution property: after being mixed with hot water, the emulsion can be quickly dissolved into uniform emulsion without layering and oil drops floating up.
Impurities: there is no foreign body visible with normal vision.
(2) The physical and chemical index requirements of oyster powder
Moisture content: less than or equal to 10g/100g, the total amount of protein is more than or equal to 30g/100g, zinc is more than or equal to 50mg/100g, lead is less than or equal to 2.0mg/kg, arsenic is less than or equal to 2.0mg/kg, mercury is less than or equal to 1.0mg/kg, the total number of colonies is less than or equal to 30000cfu/g, coliform bacteria is less than or equal to 90MPN/g, mould and yeast are less than or equal to 25cfu/g, and pathogenic bacteria: and cannot be detected.
EXAMPLE 1 preparation of Zinc-enriched sea salt # 1
The zinc-rich sea salt 1# is prepared from the following raw materials in parts by weight: 10000 parts of edible sea salt, 0.45 part of potassium iodate and 5 parts of oyster powder;
the preparation method of the zinc-rich sea salt 1# comprises the following steps:
s1: preparation of salt preforms
(1) Pouring potassium iodate into a stirring barrel, melting by adopting purified water at 60 ℃, pumping the additive solution into an automatic iodizing machine through a vacuum pump, and adding the additive solution into the edible sea salt through the automatic iodizing machine;
(2) drying the edible sea salt containing the additive prepared in the step (1), and screening the dried edible sea salt containing the additive by using a vibrating screen to obtain preformed salt with the particle size of 60 meshes, wherein the drying temperature is 130 ℃;
s2: preparation of oyster powder solution
Weighing Concha Ostreae powder, adding purified water, stirring to obtain Concha Ostreae powder solution (Concha Ostreae powder content is 25 wt%), heating at 60 deg.C under stirring, and stirring for 15 min;
s3: preparation of the end product
And (5) spraying the oyster powder solution obtained in the step (S2) to the surface of the prefabricated salt prepared in the step (S1) by using a spraying machine, wherein the spraying amount of the oyster powder solution is 2% of the weight of the prefabricated salt, and after spraying, conveying the oyster powder solution to a drying furnace by using a conveying belt for drying, wherein the drying temperature is 80 ℃, and drying to obtain the zinc-enriched sea salt No. 1.
Wherein the spraying condition of S3 is that the fan flow is 85m3Min, the wind pressure of a fan is 1.1kPa, the solution conveying speed is 30mL/min, and the air inlet temperature is 50 ℃.
EXAMPLE 2 preparation of Zinc-enriched sea salt # 2
The zinc-rich sea salt 2# is prepared from the following raw materials in parts by weight: 10000 parts of edible sea salt, 0.4 part of potassium iodate and 5.5 parts of oyster powder;
the preparation method of the zinc-rich sea salt 2# comprises the following steps:
s1: preparation of salt preforms
(1) Pouring potassium iodate into a stirring barrel, melting by adopting purified water at 55 ℃, pumping the additive solution into an automatic iodizing machine through a vacuum pump, and adding the additive solution into the edible sea salt through the automatic iodizing machine;
(2) drying the edible sea salt containing the additive prepared in the step (1), and screening the dried edible sea salt containing the additive by using a vibrating screen to obtain prefabricated salt with the particle size of 20 meshes, wherein the drying temperature is 110 ℃;
s2: preparation of oyster powder solution
Weighing Concha Ostreae powder, adding purified water, stirring to obtain Concha Ostreae powder solution (Concha Ostreae powder content is 20 wt%), heating at 55 deg.C under stirring, and stirring for 10 min;
s3: preparation of the end product
And (5) spraying the oyster powder solution obtained in the step (S2) to the surface of the prefabricated salt prepared in the step (S1) by using a spraying machine, wherein the spraying amount of the oyster powder solution is 1% of the weight of the prefabricated salt, and after spraying, conveying the oyster powder solution to a drying furnace by using a conveying belt for drying, wherein the drying temperature is 70 ℃, and drying to obtain the zinc-enriched sea salt No. 2.
Wherein, the spraying condition of S3 is that the fan flow is 80m3Min, the wind pressure of a fan is 1.0kPa, the solution conveying speed is 20mL/min, and the air inlet temperature is 40 ℃.
EXAMPLE 3 preparation of Zinc-enriched sea salt # 3
The zinc-rich sea salt 3# is prepared from the following raw materials in parts by weight: 10000 parts of edible sea salt, 0.8 part of potassium iodate and 10 parts of oyster powder;
the preparation method of the zinc-rich sea salt 3# comprises the following steps:
s1: preparation of salt preforms
(1) Pouring potassium iodate into a stirring barrel, melting by adopting purified water at 65 ℃, pumping the additive solution into an automatic iodizing machine through a vacuum pump, and adding the additive solution into the edible sea salt through the automatic iodizing machine;
(2) drying the edible sea salt containing the additive prepared in the step (1), and screening the dried edible sea salt containing the additive by using a vibrating screen to obtain prefabricated salt with the particle size of 80 meshes, wherein the drying temperature is 140 ℃;
s2: preparation of oyster powder solution
Weighing Concha Ostreae powder, adding purified water, stirring to obtain Concha Ostreae powder solution (Concha Ostreae powder content of 30 wt%), heating at 65 deg.C under stirring, and stirring for 20 min;
s3: preparation of the end product
And (5) spraying the oyster powder solution obtained in the step (S2) to the surface of the prefabricated salt prepared in the step (S1) by using a spraying machine, wherein the spraying amount of the oyster powder solution is 5% of the weight of the prefabricated salt, and after spraying, conveying the oyster powder solution to a drying furnace by using a conveying belt for drying, wherein the drying temperature is 90 ℃, and drying to obtain the zinc-enriched sea salt No. 3.
Wherein, the spraying condition of S3 is that the fan flow is 90m3Min, fan pressure 1.2kPa, the solution conveying speed is 40mL/min, and the air inlet temperature is 60 ℃.
Comparative example 1 preparation of comparative Zinc-enriched sea salt # 1
The difference between the comparative zinc-rich sea salt 1# and the zinc-rich sea salt 1# is that zinc gluconate was used for the comparative zinc-rich sea salt 1# and the rest was the same.
Comparative example 2 preparation of comparative Zinc-enriched sea salt # 2
The difference between the comparative zinc-rich sea salt No. 2 and the zinc-rich sea salt No. 1 is that the comparative zinc-rich sea salt No. 2 uses 20% of the oyster flour water, and the rest is the same.
Comparative example 3 preparation of comparative Zinc-enriched sea salt # 3
The difference between the comparative zinc-rich sea salt No. 3 and the zinc-rich sea salt No. 1 is that the oyster powder is added in an amount of 100 parts by weight in the comparative zinc-rich sea salt No. 3, and the rest is the same.
Comparative example 4 preparation of comparative Zinc-enriched sea salt # 4
The difference between the comparative zinc-rich sea salt 4# and the zinc-rich sea salt 1# is that the particle size of the prepared salt in the comparative zinc-rich sea salt 4# is 10 mesh, and the rest are the same.
Comparative example 5 preparation of comparative Zinc-enriched sea salt # 5
The difference between the comparative zinc-rich sea salt 5# and the zinc-rich sea salt 1# is that the particle size of the prepared salt in the comparative zinc-rich sea salt 5# was 150 mesh, and the other things were the same.
Comparative example 6 preparation of comparative Zinc-enriched sea salt # 6
The difference between the comparative zinc-rich sea salt 6# and the zinc-rich sea salt 1# is that the heating temperature of step S2 of the comparative zinc-rich sea salt 6# is 100 ℃, the drying temperature is 150 ℃, and the others are the same.
Comparative example 7 preparation of comparative Zinc-enriched sea salt # 7
The difference between the comparative zinc-rich sea salt 7# and the zinc-rich sea salt 1# is that the oyster powder content in the oyster powder solution of step S2 of the comparative zinc-rich sea salt 7# is 50 wt%, and the rest is the same.
Comparative example 8 preparation of comparative Zinc-enriched sea salt # 8
The difference between the comparative zinc-rich sea salt No. 8 and the zinc-rich sea salt No. 1 is that the blower flow rate under spraying conditions of step S3 of the comparative zinc-rich sea salt No. 8 is 30m3Min, all other things being equal.
Comparative example 9 preparation of comparative Zinc-enriched sea salt # 9
The difference between the comparative zinc-rich sea salt No. 9 and the zinc-rich sea salt No. 1 is that the fan flow rate under spraying conditions of step S3 of the comparative zinc-rich sea salt No. 9 was 120m3Min, all other things being equal.
Comparative example 10 preparation of comparative Zinc-enriched sea salt # 10
The difference between the comparative zinc-rich sea salt 10# and the zinc-rich sea salt 1# is that the comparative zinc-rich sea salt 10# does not use a spray valve, but adopts a common mixing and stirring method, and the other steps are the same.
Example 4 Experimental characterization
1. Determination of Zinc content and Dispersion uniformity
According to GB 5009.14-2017-national food safety standard-flame atomic absorption spectrometry in the determination of zinc in food, the zinc content of the zinc-rich sea salt 1# -3# and the zinc-rich sea salt 1# -10# are respectively determined, and the results are shown in Table 1.
Simultaneously, respectively paving 1# -3# of the zinc-rich sea salt and 1# -10# of the comparative zinc-rich sea salt at 1m2The thickness of the container was the same, and the zinc content at each point was measured by sampling with a "five-point sampling method", and the dispersion uniformity (after calculating the average value, the dispersion degree was calculated) was calculated, and the results are shown in table 1.
TABLE 1 Zinc content and Dispersion uniformity results
The result shows that the zinc-rich sea salt No. 1-3 prepared by the raw materials and the preparation method defined by the application has high zinc content, retains the nutrient components of the oyster powder, has rich nutrition, and also shows that the distribution uniformity of the oyster powder in the salt is good.
Compared with zinc gluconate used in the zinc-rich sea salt No. 1, the finally obtained salt has lower zinc content, which indicates that the loss of the zinc element is serious; compared with the difference between the oyster powder used in the zinc-rich sea salt No. 2 and the zinc-rich sea salt No. 1, the final zinc content is lower and the dispersion uniformity is general; the final result shows that the zinc content is reduced on the contrary, which indicates that the oyster powder beyond the limited range can not increase the zinc content of the final product, the loss is serious and the cost is higher.
Compared with the zinc-rich sea salt No. 4-5, the mesh number of the prepared salt is not in the range defined by the application, the final zinc content is general, and the dispersion uniformity and degree are also influenced; compared with the heating temperature and the drying temperature in the zinc-rich sea salt No. 6, the heating temperature and the drying temperature are beyond the range limited by the application, the final zinc content is low, and the analysis reason is mainly that the nutrient components are damaged due to overhigh temperature; comparing that the content of the oyster powder in the oyster powder solution in the zinc-rich sea salt No. 7 exceeds the range defined by the application, the final zinc content is normal, but the dispersion uniformity is general; compared with the blower flow in No. 8-No. 9 zinc-rich sea salt, the blower flow is not in the range defined by the application, and the final dispersion uniformity is general; compared with the traditional stirring method used by the zinc-rich sea salt No. 10, the final zinc content is lower, and the dispersion uniformity is poor.
The above description is only an example of the present application, and the protection scope of the present application is not limited by these specific examples, but is defined by the claims of the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the technical idea and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The zinc-rich sea salt is characterized by being prepared from the following raw materials: edible sea salt, additive and Concha Ostreae powder;
10000 parts by weight of edible sea salt is taken as a reference, the addition amount of the additive is 0.1-1 part by weight, and the addition amount of the oyster powder is 2-20 parts by weight.
2. The zinc-rich sea salt according to claim 1, wherein the additive is added in an amount of 0.4-0.8 parts by weight and the oyster powder is added in an amount of 5-10 parts by weight, based on 10000 parts by weight of the edible sea salt.
3. The zinc-rich sea salt of claim 1, wherein the zinc-rich sea salt is prepared from edible sea salt and additives, and is prepared from pre-made salt and oyster powder;
the average particle size of the prepared salt is 20-80 meshes.
4. The zinc-rich sea salt of claim 1 wherein the additive is potassium iodate.
5. A method for preparing a zinc enriched sea salt according to any of claims 1 to 4 comprising the steps of:
s1: preparation of salt preforms
(1) Pouring the additive into a stirring container, adding water, stirring for melting, and adding the additive solution into the edible sea salt;
(2) drying the edible sea salt containing the additive prepared in the step (1), and sieving the dried edible sea salt containing the additive to obtain prefabricated salt with the particle size of 20-80 meshes;
s2: preparation of oyster powder solution
Mixing Concha Ostreae powder with water to obtain Concha Ostreae powder solution, heating and stirring;
s3: preparation of the end product
And (5) spraying the oyster powder solution obtained in the step (S2) to the surface of the preformed salt prepared in the step (S1) by using a spraying device, drying the sprayed preformed salt, and drying to obtain the zinc-rich sea salt.
6. The method as claimed in claim 5, wherein the stirring temperature in step S1 (1) is 55-65 ℃, and the drying temperature in step S1 (2) is 110-140 ℃.
7. The preparation method according to claim 5, wherein the oyster powder solution of step S2 has an oyster powder content of 20-30 wt%.
8. The method according to claim 5, wherein the heating temperature of step S2 is 55-65 ℃ and the stirring time is 10-20 min.
9. The method according to claim 5, wherein the oyster powder solution is sprayed at a rate of 1-5% by weight of the prepared salt in step S3, and the drying temperature is 70-90 ℃.
10. The method according to claim 5, wherein the spraying conditions in step S3 are as follows: the flow of the fan is 80-90m3Min, the wind pressure of a fan is 1.0-1.2kPa, the solution conveying speed is 20-40mL/min, and the air inlet temperature is 40-60 ℃.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271541A (en) * | 1999-04-28 | 2000-11-01 | 王树青 | Multi-element low-sodium nutritive salt |
| US20080003339A1 (en) * | 2006-06-30 | 2008-01-03 | Clinton Johnson | Seasoning and method for seasoning a food product utilizing small particle sea salt |
| CN105475965A (en) * | 2015-12-05 | 2016-04-13 | 中盐榆林盐化有限公司 | Biological health care salt and preparation method thereof |
| CN106690140A (en) * | 2016-12-12 | 2017-05-24 | 钦州学院 | Preparation method of oyster powder |
| CN108402440A (en) * | 2018-02-06 | 2018-08-17 | 天津佰亿达企业管理股份有限公司 | A kind of selenium-rich Yikang edible salt and preparation method thereof |
| CN110140899A (en) * | 2019-05-08 | 2019-08-20 | 芜湖职业技术学院 | A kind of biological zinc foodstuff and its production method |
-
2021
- 2021-12-31 CN CN202111675735.0A patent/CN114343160A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271541A (en) * | 1999-04-28 | 2000-11-01 | 王树青 | Multi-element low-sodium nutritive salt |
| US20080003339A1 (en) * | 2006-06-30 | 2008-01-03 | Clinton Johnson | Seasoning and method for seasoning a food product utilizing small particle sea salt |
| CN105475965A (en) * | 2015-12-05 | 2016-04-13 | 中盐榆林盐化有限公司 | Biological health care salt and preparation method thereof |
| CN106690140A (en) * | 2016-12-12 | 2017-05-24 | 钦州学院 | Preparation method of oyster powder |
| CN108402440A (en) * | 2018-02-06 | 2018-08-17 | 天津佰亿达企业管理股份有限公司 | A kind of selenium-rich Yikang edible salt and preparation method thereof |
| CN110140899A (en) * | 2019-05-08 | 2019-08-20 | 芜湖职业技术学院 | A kind of biological zinc foodstuff and its production method |
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