阅读说明：本技术 一种富含微量元素的食品添加剂及制备方法 (Food additive rich in trace elements and preparation method thereof ) 是由 张礼 梁仕超 尹卫强 于 2021-08-11 设计创作，主要内容包括：本申请提供了一种富含微量元素的食品添加剂及制备方法,以海水为原料,通过相分离、臭氧氧化/蛋白质分离、砂滤、深度净化、紫外线杀菌等工艺处理后,去除了海水中的有机质、亚硝酸盐、对人体有害的重金属等物质,保留有益的矿物质和微量元素,得到一种富含微量元素的食品添加剂。本申请所制备的一种富含微量元素的食品添加剂,含有多种矿物质和多种微量元素,将其加入食物中后,能够满足人体对微量元素的需求,产品质量高。本申请以海水为原料,容易获取,加工精细但制备工艺简单,可操作性强。(The application provides a food additive rich in trace elements and a preparation method thereof, wherein seawater is used as a raw material, and after the seawater is treated by processes of phase separation, ozone oxidation/protein separation, sand filtration, deep purification, ultraviolet sterilization and the like, substances such as organic matters, nitrite, heavy metals harmful to human bodies and the like in the seawater are removed, and beneficial mineral substances and trace elements are reserved, so that the food additive rich in trace elements is obtained. The food additive rich in trace elements prepared by the application contains various mineral substances and various trace elements, and after the food additive is added into food, the requirement of a human body on the trace elements can be met, and the product quality is high. The method takes seawater as a raw material, is easy to obtain, is fine in processing, but is simple in preparation process and strong in operability.)

1. A food additive rich in trace elements is characterized in that: the food additive is prepared from natural seawater as a raw material, and the trace elements contained in the food additive are one or more of lithium, sodium, magnesium, aluminum, potassium, calcium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, selenium, strontium, molybdenum, tin, antimony, cesium, bismuth, boron, titanium, rubidium, tungsten and platinum.

2. A trace element-rich food additive according to claim 1, wherein: among the food additives: mg (magnesium)²⁺The concentration of (A) is 9500-13000 mg/L, Cl^-The concentration of (A) is 26000-35000 mg/L, SO₄ ^2-The concentration of (A) is 1800-2750 mg/L, K⁺In a concentration of less than 4500mg/L, Na⁺Is less than 4500 mg/L.

3. A trace element-rich food additive according to claim 1, wherein: the total amount of soluble solids in the food additive is 20000-38000 mg/L.

4. The method for preparing a trace element-rich food additive as claimed in claim 1, wherein: the method comprises the following steps:

(1) filtering natural seawater by using a stainless steel net with 80-2500 meshes and a filter pressing water purifier;

(2) heating the seawater filtered in the step (1) by using an electric heating evaporation tank to crystallize NaCl to obtain a first concentrated salt solution;

(3) cooling the first concentrated salt solution obtained in the step (2), and separating KCl and Na₂SO₄Then, a second concentrated salt solution is obtained;

(4) introducing sulfur dioxide into the second concentrated salt solution obtained in the step (3) to extract halogen elements to obtain a third concentrated salt solution;

(5) adding a sodium hypochlorite solution into the third concentrated salt solution, reacting for 1.5-2.5 hours, and then placing the mixed solution into an ozone/protein separator for treatment for 3.2-5 hours to obtain a concentrated solution; the volume ratio of the third concentrated salt solution to the sodium hypochlorite solution is 1000: 0.5-1000: 1;

(6) purifying the concentrated solution obtained in the step (5) by using a quartz sand/manganese sand filter to obtain a purified solution; the grain size of the sand grains is 0.5-1.2 mm, and the uneven coefficient is 2;

(7) filtering the purified liquid obtained in the step (6) by using an activated carbon fiber filter, a molecular sieve filter and a precision filter in sequence to obtain high-transparency liquid;

(8) and (4) placing the high-transparency liquid obtained in the step (7) in a storage tank, performing secondary sterilization by using an underwater ultraviolet lamp, and packaging and warehousing after the high-transparency liquid is analyzed and detected to be qualified.

5. A method for preparing a trace element-rich food additive as claimed in claim 4, wherein: the sodium hypochlorite solution added in the step (5) is a food-grade sodium hypochlorite solution, and the weight ratio of sodium hypochlorite in the sodium hypochlorite solution is 10-13%.

6. A method for preparing a trace element-rich food additive as claimed in claim 4, wherein: the aperture of the precision filter used in the step (7) is 0.1-0.5 μm.

7. The use method of a trace element-rich food additive as claimed in claim 1, wherein: when in use, the product is directly added into food; or mixing food additive and medicinal glycerol at a volume ratio of 1:1, and dehydrating with evaporator to obtain glycerol concentrate, and directly adding the glycerol concentrate into food rich in oil.

Technical Field

The application relates to the technical field of food, in particular to a food additive rich in trace elements and a preparation method thereof.

Background

Trace elements are divided with respect to major elements (macroelements). For the human body, minerals present in the human body in an extremely small amount, less than 0.01% of the body weight of the human body, are called trace elements. The daily requirement of trace elements for human body is very small, but it is essential for human body, such as: the calcium plays a supporting and protecting role on bones and teeth, the calcium in blood participates in the blood coagulation process, and the calcium keeps a certain proportion with potassium, sodium and magnesium ions, so that the calcium-potassium-magnesium-calcium composite has an important significance in maintaining the excitability of nerves and muscles; magnesium can prevent and treat heart disease, is a catalyst for reducing cholesterol in blood, and has important effects on protein synthesis, utilization of fat and saccharide, and enzyme; potassium, sodium and chlorine can maintain the body fluid to be close to neutral and are very important for endocrine; the trace element zinc is related to the growth and development of organisms, tissue regeneration and skin health protection; manganese can help choline utilize fat; iodine can participate in the synthesis of thyroid gland and regulate the metabolism of organism; selenium has antioxidant effect, and can promote immunoglobulin production, protect phagocyte intact and protect cardiovascular and myocardial health; copper plays an important role in the production of enzyme systems and RNA, and the like.

The existing trace element additives contain few kinds of trace elements, are commonly used in feeds, provide few food additives of trace elements for people, and cannot meet the requirements of consumers.

Disclosure of Invention

Aiming at the defects of the prior art, the application aims to provide the food additive rich in the trace elements and the preparation method thereof.

The technical scheme adopted by the application is as follows:

a food additive rich in trace elements is prepared from natural seawater as a raw material, and the trace elements contained in the food additive are one or more of lithium, sodium, magnesium, aluminum, potassium, calcium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, selenium, strontium, molybdenum, tin, antimony, cesium, bismuth, boron, titanium, rubidium, tungsten and platinum.

Further, a food additive rich in trace elements, wherein: mg (magnesium)²⁺The concentration of (A) is 9500-13000 mg/L, Cl^-The concentration of (A) is 26000-35000 mg/L, SO₄ ^2-The concentration of (A) is 1800-2750 mg/L, K⁺In a concentration of less than 4500mg/L, Na⁺Is less than 4500 mg/L.

Further, the food additive rich in trace elements is characterized in that the total amount of soluble solids in the food additive is 20000-38000 mg/L.

Further, the preparation method of the food additive rich in trace elements comprises the following steps:

(1) filtering natural seawater by using a stainless steel net with 80-2500 meshes and a filter pressing water purifier;

(2) heating the seawater filtered in the step (1) by using an electric heating evaporation tank to crystallize NaCl to obtain a first concentrated salt solution;

(3) cooling the first concentrated salt solution obtained in the step (2), and separating KCl and Na₂SO₄Then, a second concentrated salt solution is obtained;

(4) introducing sulfur dioxide into the second concentrated salt solution obtained in the step (3) to extract halogen elements to obtain a third concentrated salt solution;

(5) adding a sodium hypochlorite solution into the third concentrated salt solution, reacting for 1.5-2.5 hours, and then placing the mixed solution into an ozone/protein separator for treatment for 3.2-5 hours to obtain a concentrated solution; the volume ratio of the third concentrated salt solution to the sodium hypochlorite solution is 1000: 0.5-1000: 1; the main purpose of the step is to sterilize, oxidize and decolor the concentrated salt solution and remove soluble protein, nitrate and nitrite;

(6) purifying the concentrated solution obtained in the step (5) by using a quartz sand/manganese sand filter to obtain a purified solution; the grain size of the sand grains is 0.5-1.2 mm, and the uneven coefficient is 2; the step aims at removing iron ions in the water body and reducing the chroma;

(7) filtering the purified liquid obtained in the step (6) by using an activated carbon fiber filter, a molecular sieve filter and a precision filter in sequence to obtain high-transparency liquid; the step aims at removing residual chlorine, sulfur, heavy metals and suspended particles in the purification solution to ensure that the content of arsenic is lower than 0.1mg/L, the content of cadmium is lower than 0.01mg/L, the content of mercury is lower than 0.05mg/L and the content of lead is lower than 0.5 mg/L;

(8) and (4) placing the high-transparency liquid obtained in the step (6) in a storage tank, performing secondary sterilization by using an underwater ultraviolet lamp, and packaging and warehousing after the high-transparency liquid is analyzed and detected to be qualified.

Further, the preparation method of the food additive rich in trace elements comprises the step (5) of adding a food-grade sodium hypochlorite solution, wherein the weight ratio of sodium hypochlorite in the sodium hypochlorite solution is 10% -13%.

Further, the preparation method of the food additive rich in trace elements comprises the step (7) of using a precision filter with the aperture of 0.1-0.5 μm.

Further, a method for using the food additive rich in trace elements, which is directly added into food when in use;

further, a method for using the food additive rich in trace elements comprises the steps of mixing the food additive and medicinal grade glycerol according to the volume ratio of 1:1, then dehydrating by using an evaporator to obtain glycerol concentrated solution, and directly adding the glycerol concentrated solution into food rich in oil.

The beneficial effect of this application lies in:

(1) the food additive rich in trace elements prepared by the application contains various mineral substances and various trace elements, and can meet the requirements of human bodies on the trace elements after being added into food.

(2) The method takes seawater as a raw material, is easy to obtain, is fine in processing, but is simple in preparation process and strong in operability; after the treatment by the processes of phase separation, ozone oxidation/protein separation, sand filtration, deep purification, ultraviolet sterilization and the like, organic matters, nitrite, heavy metals and other substances harmful to human bodies in seawater are removed, beneficial mineral substances and trace elements are reserved, and the product quality is high.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example 1

A food additive rich in trace elements is prepared by the following steps:

(1) filtering natural seawater with 1000 mesh stainless steel net and filter pressing water purifier;

(2) heating the seawater filtered in the step (1) by using an electric heating evaporation tank to crystallize NaCl to obtain a first concentrated salt solution;

(3) cooling the first concentrated salt solution obtained in the step (2), and separating KCl and Na₂SO₄Then, a second concentrated salt solution is obtained;

(4) introducing sulfur dioxide into the second concentrated salt solution obtained in the step (3) to extract halogen elements to obtain a third concentrated salt solution;

(5) adding a food-grade sodium hypochlorite solution with the mass ratio of 12% into the third concentrated salt solution, reacting for 2 hours, and then placing the mixed solution into an ozone/protein separator for treatment for 4 hours to obtain a concentrated solution; the volume ratio of the third concentrated salt solution to the sodium hypochlorite solution is 1000: 1; the main purpose of the step is to sterilize, oxidize and decolor the concentrated salt solution and remove soluble protein, nitrate and nitrite;

(6) purifying the concentrated solution obtained in the step (5) by using a quartz sand/manganese sand filter to obtain a purified solution; the grain size of the sand grains is 0.5-1.2 mm, and the uneven coefficient is 2; the step aims at removing iron ions in the water body and reducing the chroma;

(7) sequentially filtering the purified liquid obtained in the step (6) by using an activated carbon fiber filter, a molecular sieve filter and a precision filter with the pore size of 0.3 mu m to obtain high-transparency liquid; the step aims at removing residual chlorine, sulfur, heavy metals and suspended particles in the purification solution to ensure that the content of arsenic is lower than 0.1mg/L, the content of cadmium is lower than 0.01mg/L, the content of mercury is lower than 0.05mg/L and the content of lead is lower than 0.5 mg/L;

(8) and (4) placing the high-transparency liquid obtained in the step (6) in a storage tank, performing secondary sterilization by using an underwater ultraviolet lamp, and packaging and warehousing after the high-transparency liquid is analyzed and detected to be qualified.

When in use, the content of the additive is not more than 0.6% of the food quality.

Example 2

(1) Filtering natural seawater with 1000 mesh stainless steel net and filter pressing water purifier;

(2) heating the seawater filtered in the step (1) by using an electric heating evaporation tank to crystallize NaCl to obtain a first concentrated salt solution;

(3) cooling the first concentrated salt solution obtained in the step (2), and separating KCl and Na₂SO₄Then, a second concentrated salt solution is obtained;

(4) introducing sulfur dioxide into the second concentrated salt solution obtained in the step (3) to extract halogen elements to obtain a third concentrated salt solution;

(5) adding a food-grade sodium hypochlorite solution with the mass ratio of 12% into the third concentrated salt solution, reacting for 2 hours, and then placing the mixed solution into an ozone/protein separator for treatment for 4 hours to obtain a concentrated solution; the volume ratio of the third concentrated salt solution to the sodium hypochlorite solution is 1000: 1; the main purpose of the step is to sterilize, oxidize and decolor the concentrated salt solution and remove soluble protein, nitrate and nitrite;

(6) purifying the concentrated solution obtained in the step (5) by using a quartz sand/manganese sand filter to obtain a purified solution; the grain size of the sand grains is 0.5-1.2 mm, and the uneven coefficient is 2; the step aims at removing iron ions in the water body and reducing the chroma;

(7) sequentially filtering the purified liquid obtained in the step (6) by using an activated carbon fiber filter, a molecular sieve filter and a precision filter with the pore size of 0.3 mu m to obtain high-transparency liquid; the step aims at removing residual chlorine, sulfur, heavy metals and suspended particles in the purification solution to ensure that the content of arsenic is lower than 0.1mg/L, the content of cadmium is lower than 0.01mg/L, the content of mercury is lower than 0.05mg/L and the content of lead is lower than 0.5 mg/L;

(8) placing the high-transparency liquid obtained in the step (6) in a storage tank, and performing secondary sterilization by using an underwater ultraviolet lamp to obtain a food additive;

(9) mixing food additive and medicinal glycerol at a volume ratio of 1:1, and dehydrating with evaporator to obtain glycerol concentrate.

When in use, the content of the glycerol concentrated solution is not more than 3% of the food quality.

Application example 1

1. The food additive rich in trace elements prepared in example 1 is inspected, and the inspection items are as follows: lithium, beryllium, sodium, magnesium, aluminum, potassium, calcium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, arsenic, selenium, strontium, molybdenum, palladium, cadmium, tin, antimony, cesium, barium, lanthanum, thallium, lead, bismuth, scandium, germanium, yttrium, zirconium, niobium, silver, indium, tellurium, cerium, praseodymium, samarium, europium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, hafnium, tantalum, rhenium, gold, mercury, boron, titanium, rubidium, neodymium, gadolinium, tungsten, platinum. The detection instrument is Agilent 7700 xICP-MS.

The detection results are shown in table 1:

TABLE 1 statistical table of test results

The results show that the food additive rich in trace elements prepared by the method is rich in trace elements required by human bodies; the proportion of elements harmful to human body in the food is far lower than the national standard.

According to the method, after the seawater is subjected to the processes of phase separation, ozone oxidation/protein separation, sand filtration, deep purification, ultraviolet sterilization and the like, elements harmful to a human body are greatly reduced, trace elements beneficial to the human body are enriched, and the food additive rich in the trace elements is obtained.

2. Influence on Normal growth

The food additive prepared in example 1 is added into rat grain according to the weight ratio of 0.4%; the glycerin concentrate prepared in example 2 was added to cheese at a weight ratio of 2%.

Selecting 100 healthy mice with the weight of 18-22 g. Mice were randomized into 4 groups: blank 1 group (25), example 1 group (25), blank 2 group (25), example 2 group (25). The blank group 1 is fed with normal rat food, and the group in example 1 is fed with rat food added with food additive; the blank group 2 was fed with normal cheese and the group of example 2 was fed with cheese to which a glycerol concentrate was added. After 30 days of feeding, the mice in each group have good health condition, free movement, coordinated movement, normal hair color, growth and development, normal food intake and water drinking, and do not show the phenomena of accelerated respiration or excitation inhibition after being fed with food.

Initial body weights of mice were recorded, and after 30 days of feeding, body weights of mice were measured again and data were collated. The specific results are shown in table 2:

table 2 mouse weight data

Group of	Animal number (only)	Initial body weight (g)	Ending body weight (g)	Weight gain (g)
					Blank 1 group	25	20.4±0.7	32.1±2.2	12.0±2.3
EXAMPLE 1 group	25	20.5±0.6	32.0±2.5	11.9±2.5
					Blank 2 group	25	20.4±0.8	36.1±2.2	16.0±2.4
EXAMPLE 2 group	25	20.4±0.5	36.3±2.9	16.4±2.7

As can be seen from Table 1, the initial body weight of the mice is balanced among the groups, the body weight gains of the mice in the blank 1 group and the mice in the example 1 group, the blank 2 group and the mice in the example 2 group are not obviously different during the test period, and the food additive rich in trace elements has no obvious influence on the body weight gain of the mice and does not influence the normal growth of the mice.

The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the present application, and all equivalent variations and modifications within the scope of the present application are intended to be covered by the present application. Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.