Disclosure of Invention
Based on the defects existing in the prior art, the application aims at providing the easily-dispersible and easily-absorbable calcium powder composition and the preparation method thereof, and the application adopts a fluidized bed process with mature micro-granulation, so that the prepared composition has the advantages of proper particle size, uniform particles, easy oral administration and swallowing, easy absorption, better edible experience, high absorption rate of the obtained calcium composition and remarkable effect of increasing bone density.
In order to achieve the purpose, the application adopts the following technical scheme:
the easily dispersible and easily absorbable calcium powder composition comprises the following components in parts by weight: 35-55 parts of a calcium source, 0.5-3 parts of a calcium promoter and 5-20 parts of an adhesive;
the calcium source is calcium citrate, and the calcium citrate is ultrafine powder capable of passing through a 1250-mesh sieve.
The calcium-promoted absorbent comprises casein phosphopeptide.
As some preferred embodiments, the calcium boost absorber further comprises whey proteolytic peptides or/and lycium barbarum polysaccharides;
preferably, the calcium-promoted absorbent is a mixture of casein phosphopeptide, whey protein hydrolysis peptide and Lycium barbarum polysaccharide in a mass ratio of 1:1:1.
The adhesive is polydextrose.
In some preferred embodiments, the mass ratio of calcium citrate to polydextrose is from 25:2 to 8.
As some preferred embodiments, the readily dispersible, readily absorbable calcium powder compositions have a moisture content of 0.5 to 8 weight percent.
As some preferred embodiments, the easily dispersible and easily absorbable calcium powder composition further comprises 20-40 parts of filler and 1-3 parts of suspending agent;
the filler is erythritol;
the suspending agent is agar.
As some preferred embodiments, the easily dispersible and easily absorbable calcium powder composition comprises the following components in parts by weight:
35-55 parts of calcium citrate;
5-20 parts of polydextrose;
20-40 parts of erythritol;
0.5-3 parts of calcium-promoted absorbent;
1-3 parts of agar;
the calcium-promoted absorbent is a mixture of casein phosphopeptide, whey protein hydrolysis peptide and Lycium barbarum polysaccharide in a mass ratio of 1:1:1.
The application also provides a preparation method of the easily-dispersible and easily-absorbable calcium powder composition, which comprises the following steps:
(1) Preparing an adhesive: sieving the adhesive, dispersing the adhesive with the formula amount in purified water with the formula amount of 40%, and stirring to dissolve the adhesive into an aqueous solution;
(2) Granulating: weighing and loading a calcium source, a suspending agent and a filler in the dosage of the formula into a stirrer, and uniformly mixing to obtain a mixture; standby; granulating the mixture by using the aqueous solution prepared in the step (1) on a fluidized bed, drying, and sieving once to obtain pre-micro granulating powder;
(3) Mixing the pre-micro granulation powder obtained in the step (2) with a calcium promoter, sieving again, and discharging to obtain a calcium micro granulation composition;
the number of the sieves described in the above step (1) is 10 to 30 mesh, preferably 20 mesh.
The granulation conditions in the step (2) are as follows: the temperature is 45-65 ℃; the atomization pressure is 0.12Mpa-0.3Mpa, and the air inlet frequency is 20 Hz-35 Hz; the number of the first pass is 10-30 meshes, preferably 20 meshes; the number of the re-screening is 10-30 meshes, preferably 20 meshes.
The drying conditions in the step (2) are as follows: the air inlet temperature is 40-60 ℃ and the air inlet frequency is 20-35Hz.
When the water content of the micro-granulation is 0.5-8%, a more uniform granulation morphology can be obtained in the micro-granulation.
The application uses calcium citrate as a calcium source:
calcium citrate, commonly referred to as tricalcium citrate, is also known as calcium citrate. As an organic acid calcium, the calcium carbonate has higher solubility and bioavailability than inorganic acid calcium such as calcium carbonate, tricalcium citrate and the like, has no stimulation to intestines and stomach, does not need to be neutralized by gastric acid, and can be directly absorbed by human body. For example, tan Hui provides good therapeutic effects on osteoporosis by calcium citrate, which does not produce CO in the gastrointestinal tract 2 Therefore, the adverse reactions such as dyspepsia, abdominal distension, constipation and the like are reduced, and the traditional Chinese medicine composition is particularly suitable for long-term use of senile osteoporosis patients. Calcium citrate has been widely used as a food additive and a nutrition enhancer, and is the first choice for food-based calcium supplements.
Erythritol is used as a filler or sweetener in the present application:
erythritol is a novel nutritive sweetener and is characterized by good heat stability, small hygroscopicity, low freezing point, low calorific value and cool feel. The characteristics of the composition lead the composition to be widely applied to the fields of foods, medicines, cosmetics and the like. Wherein, because the erythritol has very low calorie and is called as a sweetener with zero calorific value, the erythritol can be used for producing various low-calorie health-care foods and beverages; in the field of medicine, erythritol can be used as a flavoring agent of medicines and an excipient of tablets, can effectively improve the taste of products, and is also beneficial to forming uniform granulation in the fluidized bed granulation process.
Casein phosphopeptides are used as one of the calcium-promoted absorbers:
casein phosphopeptide (CPP) has been widely studied as a known phosphopeptide calcium-supplementing preparation, its calcium absorption-promoting activity and mechanism. The absorption pathway of calcium in mammals can be divided into the saturated transcellular pathway (i.e., active absorption) and the cellular alternative pathway (i.e., passive absorption), and the main way of calcium absorption depends on the body's calcium content. The phosphopeptide has a remarkable effect on binding metal ions due to the special negative charge structure, calcium ions are easy to be combined with the phosphopeptide to form a peptide-calcium complex, the peptide-calcium complex is integrally transported into cells through a small peptide transportation path, the small peptide is used as a carrier for calcium transportation, and the calcium absorption is promoted and is not dependent on TRPV6 calcium ion channels and 1, 25-dihydroxyvitamin D3 to be absorbed by human bodies, so that the function of substituting the vitamin D3 can be achieved to a certain extent. Meanwhile, various research data show that the lycium barbarum polysaccharide and the whey protein hydrolysis peptide have the same efficacy as CPP, and can promote the absorption of free calcium by human bodies. Therefore, the calcium absorption and diffusion transportation are promoted by adding the calcium absorption promoter, so that the absorption rate of the calcium is increased.
It has the following advantages:
1. the casein phosphopeptide can keep calcium in a free state and promote the passive absorption of calcium; 2. promoting the absorption and utilization of other divalent mineral nutrients such as iron, zinc and the like, and overcoming the potential adverse effect of calcium on the absorption of iron and zinc; 3. the casein phosphopeptide can also weaken the action of osteoclasts and inhibit bone resorption, thereby improving the bone calcium content; 4. can also combine calcium ions at the caries site, lighten the demineralization of enamel and achieve the effect of anticarious. Alternatively, the whey protein-hydrolyzing peptide and the matrimony vine polysaccharide also have the effect of promoting calcium absorption.
The application uses polydextrose as a binder:
has the following advantages: 1. changing physical and chemical properties of the substance; 2. changing the reactivity of the envelope; 3. has low calorie health food characteristics; 4. has necessary volume, improves the taste of food, improves oily taste, and is favorable for granulation and dispersion.
Compared with the prior art, the application has the following beneficial effects:
1. according to the calcium powder composition, as the raw material calcium citrate is ultrafine powder capable of passing through a 1250-mesh sieve, the obtained micro-granulation has proper granulation structure and size, and a proper fluidized bed drying process, so that the stability is higher and the granulation dispersity is better; and the effect of remarkably improving the calcium absorption rate of the human body is achieved by adding a proper amount of calcium-promoting absorbent and compounding.
The calcium powder composition provided by the application has reasonable components and proportions, and has good effect of increasing bone density as a calcium supplementing product;
the calcium powder composition provided by the application is uniform and fine in granulation, moderate in hardness, free of peculiar smell, suitable for oral administration, capable of being rapidly taken into the throat, good in dispersibility, smooth in mouth, free of uncomfortable feeling, good in calcium absorption effect, and suitable for pregnant women, children and middle-aged and elderly people with dysphagia.
Detailed Description
The present application is described in detail below with reference to examples, but the present application is not limited to these examples.
Unless otherwise indicated, all starting materials in the examples of the present application were purchased commercially.
Example 1A readily dispersible, readily absorbable calcium powder composition and method of making same
The raw materials comprise the following components in parts by weight:
50 parts of calcium citrate;
10 parts of polydextrose;
37.8 parts of erythritol;
1.2 parts of calcium-promoted absorbent;
agar 1 part.
Wherein the calcium absorption enhancer comprises a mixture of casein phosphopeptide, whey protein hydrolysis peptide and Lycium barbarum polysaccharide in a mass ratio of 1:1:1.
The preparation method comprises the following steps:
(1) Preparing an adhesive: sieving polydextrose with 20 mesh sieve, dispersing polydextrose with 40% of formula amount in purified water, stirring and dissolving to obtain aqueous solution;
(2) Granulating: weighing calcium citrate, agar and erythritol with quantitative formula in a stirrer, and uniformly mixing to obtain a mixture for later use; granulating the calcium citrate mixture by using the aqueous solution prepared in the step (1) on a fluidized bed, drying, and sieving with a 20-mesh sieve once to obtain pre-micro granulating powder;
(3) Mixing the pre-micro granulation powder obtained in the step (2) with a calcium promoter, sieving with a 20-mesh sieve again, and discharging to obtain a calcium micro granulation composition;
the granulation conditions in the step (2) are as follows: the temperature is 60 ℃; the atomization pressure is 0.3Mpa, and the air inlet frequency is 28Hz; the drying conditions are as follows: the air inlet temperature is 55 ℃, the air inlet frequency is 30Hz, and the water content of the micro-granulation is 2.2wt%.
Example 2A readily dispersible, absorbable calcium powder composition and method of making same
The raw materials comprise the following components in parts by weight:
50 parts of calcium citrate;
6 parts of polydextrose;
41.8 parts of erythritol;
1.2 parts of calcium-promoted absorbent;
agar 1 part.
Wherein the calcium absorption enhancer comprises a mixture of casein phosphopeptide, whey protein hydrolysis peptide and Lycium barbarum polysaccharide in a mass ratio of 1:1:1.
The preparation method comprises the following steps:
(1) Preparing an adhesive: sieving polydextrose with 20 mesh sieve, dispersing polydextrose with 40% of formula amount in purified water, stirring and dissolving to obtain aqueous solution;
(2) Granulating: weighing calcium citrate, agar and erythritol with quantitative formula in a stirrer, and uniformly mixing to obtain a mixture for later use; granulating the calcium citrate mixture by using the aqueous solution prepared in the step (1) on a fluidized bed, drying, and sieving with a 20-mesh sieve once to obtain pre-micro granulating powder;
(3) Mixing the pre-micro granulation powder obtained in the step (2) with a calcium absorption promoter, sieving with a 20-mesh sieve again, and discharging to obtain calcium micro granulation composition powder;
the granulation conditions in the step (2) are as follows: the temperature is 60 ℃; the atomization pressure is 0.3Mpa, and the air inlet frequency is 28Hz; the drying conditions are as follows: the air inlet temperature is 55 ℃, the air inlet frequency is 30Hz, and the water content of the micro-granulation is 1.7wt%.
Example 3A readily dispersible, absorbable calcium powder composition and method of making same
The raw materials comprise the following components in parts by weight:
50 parts of calcium citrate;
12 parts of polydextrose;
35.8 parts of erythritol;
1.2 parts of calcium-promoted absorbent;
agar 1 part.
Wherein the calcium absorption enhancer comprises a mixture of casein phosphopeptide, whey protein hydrolysis peptide and Lycium barbarum polysaccharide in a mass ratio of 1:1:1.
The preparation method comprises the following steps:
(1) Preparing an adhesive: sieving polydextrose with 20 mesh sieve, dispersing polydextrose with 40% of formula amount in purified water, stirring and dissolving to obtain aqueous solution;
(2) Granulating: weighing calcium citrate, agar and erythritol with quantitative formula in a stirrer, and uniformly mixing to obtain a mixture for later use; granulating the calcium citrate mixture by using the aqueous solution prepared in the step (1) on a fluidized bed, drying, and sieving with a 20-mesh sieve once to obtain pre-micro granulating powder;
(3) Mixing the pre-micro granulation powder obtained in the step (2) with a calcium promoter, sieving with a 20-mesh sieve again, and discharging to obtain a calcium micro granulation composition;
the granulation conditions in the step (2) are as follows: the temperature is 60 ℃; the atomization pressure is 0.3Mpa, and the air inlet frequency is 28Hz; the drying conditions are as follows: the air inlet temperature is 55 ℃, the air inlet frequency is 30Hz, and the water content of the micro-granulation is 2.6wt%.
Example 4A readily dispersible, absorbable calcium powder composition and method of making same
The raw materials comprise the following components in parts by weight:
50 parts of calcium citrate;
14 parts of polydextrose;
33.8 parts of erythritol;
1.2 parts of calcium-promoted absorbent;
agar 1 part.
Wherein the calcium absorption enhancer comprises a mixture of casein phosphopeptide, whey protein hydrolysis peptide and Lycium barbarum polysaccharide in a mass ratio of 1:1:1.
The preparation method comprises the following steps:
(1) Preparing an adhesive: sieving polydextrose with 20 mesh sieve, dispersing polydextrose with 40% of formula amount in purified water, stirring and dissolving to obtain aqueous solution;
(2) Granulating: weighing calcium citrate, agar and erythritol with quantitative formula in a stirrer, and uniformly mixing to obtain a mixture for later use; granulating the calcium citrate mixture by using the aqueous solution prepared in the step (1) on a fluidized bed, drying, and sieving with a 20-mesh sieve once to obtain pre-micro granulating powder;
(3) Mixing the pre-micro granulation powder obtained in the step (2) with a calcium promoter, sieving with a 20-mesh sieve again, and discharging to obtain a calcium micro granulation composition;
the granulation conditions in the step (2) are as follows: the temperature is 60 ℃; the atomization pressure is 0.2Mpa, and the air inlet frequency is 28Hz; the drying conditions are as follows: the air inlet temperature is 55 ℃, the air inlet frequency is 30Hz, and the water content of the micro-granulation is 2.0wt%.
Example 5A readily dispersible, readily absorbable calcium powder composition and method of making same
The raw materials comprise the following components in parts by weight:
50 parts of calcium citrate;
16 parts of polydextrose;
31.8 parts of erythritol;
1.2 parts of calcium-promoted absorbent;
agar 1 part.
Wherein the calcium absorption enhancer comprises a mixture of casein phosphopeptide, whey protein hydrolysis peptide and Lycium barbarum polysaccharide in a mass ratio of 1:1:1.
The preparation method comprises the following steps:
(1) Preparing an adhesive: sieving polydextrose with 20 mesh sieve, dispersing polydextrose with 40% of formula amount in purified water, stirring and dissolving to obtain aqueous solution;
(2) Granulating: weighing calcium citrate, agar and erythritol with quantitative formula in a stirrer, and uniformly mixing to obtain a mixture for later use; granulating the calcium citrate mixture by using the aqueous solution prepared in the step (1) on a fluidized bed, drying, and sieving with a 20-mesh sieve once to obtain pre-micro granulating powder;
(3) Mixing the pre-micro granulation powder obtained in the step (2) with a calcium promoter, sieving with a 20-mesh sieve again, and discharging to obtain a calcium micro granulation composition;
the granulation conditions in the step (2) are as follows: the temperature is 60 ℃; the atomization pressure is 0.2Mpa, and the air inlet frequency is 28Hz; the drying conditions are as follows: the air inlet temperature is 55 ℃, the air inlet frequency is 30Hz, and the water content of the micro-granulation is 1.8wt%.
Comparative example 1
The only difference from example 1 is that the calcium citrate in the starting material was replaced by calcium carbonate and the moisture content of the micropellet was 2.4 wt.%, the other components and contents and the preparation method were the same as in example 1.
Comparative example 2
The only difference from example 1 is that the calcium citrate in the raw material was replaced with calcium gluconate and the moisture content of the micro-granulation was 2.7. 2.7 wt%, the other components and contents and the preparation method were the same as in example 1.
Comparative example 3
The only difference from example 1 is that the polydextrose in the raw material was replaced by inulin, the moisture content of the micro-granulation was 1.7. 1.7wt%, and other components and contents and the preparation method were the same as in example 1.
Comparative example 4
The only difference from example 1 is that the polydextrose in the starting material was replaced by a resistant dextrin, the moisture content of the microgranulate was 2.1. 2.1 wt%, and the other components and contents and the preparation method were the same as in example 1.
Comparative example 5
The only difference from example 1 is that the inlet frequency of the fluidized bed granulation was 32Hz, the inlet frequency of the drying was 34Hz, the water content of the micro-granulation was 1.5wt%, and other components and contents and the preparation method were the same as in example 1.
Comparative example 6
The only difference from example 1 is that the inlet frequency of the fluidized bed granulation is 24Hz, the inlet frequency of the drying is 26Hz, the water content of the micro-granulation is 3.5. 3.5 wt%, and other components and contents and the preparation method are the same as those of example 1.
And (3) effect verification:
1. appearance and mouthfeel test
TABLE 1 sensory evaluation criteria Table
Table 2 sample calcium micro-granulation oral mouthfeel test table
As can be seen from Table 2, the calcium micro-pelletization samples prepared in examples 1-5 were better in appearance and taste and higher in overall score as compared with examples 1-5 and comparative examples 1-6; examples 1-5 in comparison, the calcium micro-granulation samples prepared in example 1 had the best appearance and mouthfeel; in the comparison of the examples and the comparative examples, the mass ratio of the calcium citrate to the polydextrose is 50:10, the granulating condition is 60 ℃, and the air inlet frequency is 28Hz; the appearance and taste scores are higher under the conditions of 55 ℃ of drying conditions and 30Hz of air inlet frequency. The results demonstrate that the embodiment 1 has more proper particle size and dimension, solves the problems of mouth sticking and choking of the superfine powder, and the novel composition is easy to be dispersed in micro-granulation and easy to be orally taken down to the throat.
2. Flowability and particle size testing
The testing method comprises the following steps:
examples and comparative examples the particle size distribution of calcium micro-granulated samples was measured using a NKT52000-H laser particle sizer. The specific method comprises the following steps:
1. measuring a proper amount of absolute ethyl alcohol, adding the absolute ethyl alcohol into a sample cell to a scale mark, opening the sample cell for circulation, stirring, ultrasonic treatment and the like, and performing background test;
2. adding a small amount of calcium micro-granulation sample into the sample cell after the background test, starting the sample cell to circulate, and after the concentration reaches a preset value, starting to measure sample data, continuously collecting and storing the test data;
3. after the measurement is finished, the device is automatically cleaned for 3 times by absolute ethyl alcohol, so that the device channel is ensured to be clean;
4. computer software gives the particle accumulation percentage value directly.
The results of the measurements are shown in Table 3 below.
TABLE 3 sample micro-granulation flowability and particle size results table
As can be seen from Table 3, examples 1-5 and comparative examples 1-6 were better in fluidity in comparison with the prescription; in the comparison of examples 1-5, the micro-granulation of example 1 was better in flowability, the average particle size was smallest and the particle size distribution was more concentrated; in comparison of example 1 with comparative example 1 and comparative example 2, it is seen that the calcium citrate has better flowability; in comparison between example 1 and comparative examples 3 and 4, it is found that the flowability of polydextrose is better; in comparison between example 1 and comparative examples 5 and 6, it is found that the fine granulation fluidity is improved under the condition of a large air intake frequency, and that the air intake frequency is preferably 32Hz. In summary, example 1 has an optimal micro-granulation flow and particle size range and suitable granulation process conditions.
3. Promote calcium absorption experiment
3.1, experimental animal: the experiment adopts 90 male rats (secondary) with weight of about 65g, and the male rats are purchased from the breeding field of the laboratory animal institute of China medical science academy of sciences, and are randomly divided into 15 groups according to weight after the animal house is fed with basic feed for 1 week, wherein the 15 groups of rats are respectively numbered as blank group, example 1 group, control 2 group, control 3 group, control 4 group, control 5 group, control 6 group, control 7 group, control 8 group, control 9 group, control 10 group, control 11 group, control 12 group and control 13 group. Respectively feeding semisynthetic feeds with different contents and types of calcium promoters.
3.2, grouping animals and feeding: different calcium promoters and combinations thereof were mixed in different doses in basal feed as experimental groups. And (3) measuring the calcium content in the calcium agent sample and the feed by using an atomic absorption spectrophotometry. The formula of the basic feed is as follows: 100 parts of soybean meal, 150 parts of soybean meal, 526 parts of wheat flour, 40 parts of peanut oil, 25 parts of cellulose, 140 parts of starch, 10 parts of mixed vitamin, 5 parts of salt, 2 parts of DL-methionine and 2 parts of choline chloride. The content of vitamin D3 in the basic feed is 1000 IU/kg. The experimental period was 12 weeks. Animals were fed in single cages and were fed ad libitum, with deionized water.
Blank groups, fed only basal feed;
example 1 group, wherein 4g/kg casein phosphopeptide, 4g/kg whey protein and 4g/kg Lycium barbarum polysaccharide are added and weighed respectively on the basis of basic feed to be compounded, the total amount of the compounded powder of the calcium accelerator is 12g/kg, and other feeding conditions are consistent with the blank group;
the control group 1 is respectively added with 2g/kg casein phosphopeptide, 2g/kg whey protein and 2g/kg medlar polysaccharide for compounding on the basis of basic feed, and the total amount of the compounded powder of the calcium accelerator is 6g/kg, and other feeding conditions are consistent with those of the blank group;
the control group 2 is respectively added with 8g/kg casein phosphopeptide, 8g/kg whey protein and 8g/kg medlar polysaccharide for compounding on the basis of basic feed, and the total amount of the calcium accelerator compounding powder is 24g/kg, and other feeding conditions are consistent with those of the blank group;
control 3 groups, namely adding and weighing 12g/kg of calcium accelerator compound powder on the basis of basic feed, wherein the mass ratio of casein phosphopeptide, whey protein and medlar polysaccharide in the compound powder is (2:1:1), and other feeding conditions are consistent with the blank groups;
control group 4, adding and weighing 12g/kg of calcium accelerator compound powder on the basis of basic feed, wherein the mass ratio of casein phosphopeptide, whey protein and medlar polysaccharide in the compound powder is (1:2:1), and other feeding conditions are consistent with the blank group;
control 5 groups, adding and weighing 12g/kg of calcium accelerator compound powder on the basis of basic feed, wherein the mass ratio of casein phosphopeptide, whey protein and medlar polysaccharide in the compound powder is (1:1:2), and other feeding conditions are consistent with the blank groups;
a control group 6, wherein 12g/kg of calcium accelerator compound powder is added and weighed on the basis of basic feed, compared with the control group 2, casein phosphopeptide is replaced by whey hydrolyzed protein, the mass ratio of the whey hydrolyzed protein to the medlar polysaccharide is (2:1), and other feeding conditions are consistent with the blank group;
control 7 groups, namely adding and weighing 12g/kg of calcium accelerator compound powder on the basis of basic feed, wherein casein phosphopeptide replaces whey hydrolyzed protein, the mass ratio of casein phosphopeptide to Lycium barbarum polysaccharide is (2:1), and other feeding conditions are consistent with those of a blank group;
control group 8, adding and weighing 12g/kg of calcium accelerator compound powder on the basis of basic feed, wherein casein phosphopeptide replaces wolfberry polysaccharide, the ratio of casein phosphopeptide to whey hydrolyzed protein is (2:1), and other feeding conditions are consistent with the blank group;
control 9 groups, adding 12g/kg casein phosphopeptide on the basis of basic feed, and keeping other feeding conditions and dosages consistent with those of the blank groups;
control 10 groups, wherein 6g/kg casein phosphopeptide is added on the basis of basic feed, and other feeding conditions are consistent with those of a blank group;
control 11 groups, wherein 24g/kg casein phosphopeptide is added on the basis of basic feed, and other feeding conditions are consistent with those of a blank group;
control group 12, adding 12g/kg whey hydrolyzed protein on the basis of basic feed, and keeping other feeding conditions consistent with the blank group;
control 13 groups, adding 12g/kg of Lycium barbarum polysaccharide on the basis of basic feed, and keeping other feeding conditions consistent with the blank group;
3.3, metabolic assay: the calcium metabolism experiment is carried out on rats at the 4 th week, the feeding amount of 3 days is recorded, the feces are collected for 72 hours, and the calcium content in the feces and the calcium content of the feed before the current feeding are measured by an atomic absorption spectrophotometry.
3.4, animal bone density measurement: after 12 weeks of feeding, the rats were sacrificed and the right femur was removed and baked to constant weight in an oven at 105 ℃. The bone calcium concentration, mid-femur and metaphyseal bone density (BMD) of the rat were measured using an SD-1000 bone densitometer, calibrated with standard bone modules prior to measurement. And (3) measuring serum indexes in the blood of rats of each experimental group by adopting a full-automatic biochemical tester.
3.5, apparent absorption of calcium= (intake of calcium-faecal calcium) intake of calcium x 100%.
TABLE 4 apparent absorption of calcium powders with different calcium promoters
As can be seen from table 4:
(1) The calcium absorption rate of the example group and the control group is obviously higher than that of the blank group, which indicates that the calcium-promoted absorbent can improve the apparent absorption rate of calcium;
(2) The apparent calcium absorption rate of the group 1 is higher than that of the group 3, the group 4 and the group 5, which shows that the apparent calcium absorption rate of the group 1 is higher than that of the compound calcium accelerant with other proportions when the mass ratio of casein phosphopeptide, whey protein and medlar polysaccharide is (1:1:1);
(3) The calcium absorption rate of the embodiment 1 is obviously higher than the apparent calcium absorption rate of the control 6, the control 7 and the control 8, and under the condition of the same dosage of the calcium accelerator, any one of the accelerators is replaced randomly, and the calcium absorption rate is obviously lower than the simultaneous absorption rate of the three calcium accelerators, which indicates that the three calcium absorbers have the characteristic of synergy;
(4) Under the condition of the same addition amount, the calcium absorption rate of the example 1 group is higher than that of the control 9 group, the control 12 group and the control 13 group; control group 1 had higher calcium absorption than control group 10; the calcium absorption rate of the control group 2 is higher than that of the control group 11, and the result shows that the calcium absorption rate of the composite calcium accelerator is obviously higher than that of a single component under the condition of the same dosage of the calcium accelerator;
(5) The control 11 group had a calcium absorption rate similar to that of the control 9 group and was significantly higher than that of the control 10 group, indicating that the preferred 12g/kg casein phosphopeptide was the optimal addition.
Table 5 calcium concentrations in rats of each group supplemented with different calcium promoters, mid-femoral and metaphyseal bone densities
As can be seen from table 5, the bone calcium concentration, mid-femoral and metaphyseal bone density were significantly higher in the rats of example 1 than in the blank (P < 0.05); the index of the control 9 group is higher than that of the control 10 group, and the difference between the index and the control 11 group is not obvious (P is more than 0.05); the indexes of the example 1 group are obviously higher than those of the control 9 group, the control 12 group and the control 13 group (P < 0.05); the indices of example 1 group were significantly higher than those of control 1 group (P < 0.05), and the differences from control 2 group were not significant (P > 0.05); the index of the example 1 group is significantly higher than that of the control 3-5 group and the control 6-8 group (P < 0.05);
TABLE 6 serum indices of groups of rats supplemented with different calcium promoters
As can be seen from Table 6, there was no significant difference in alkaline phosphatase activity (P > 0.05) between the control group and the example 1, and the serum calcium and serum phosphorus concentrations were lower than those of the control group when the control group and the blank group were compared; the index of each of the control 9 group is higher than that of the control 10 group (P < 0.05), and the difference between the index of each of the control 9 group and the control 11 group is not significant (P > 0.05); each index of example 1 was significantly higher than that of control 9, control 12, and control 13 (P < 0.05); the indices of example 1 group were significantly higher than those of control 1 group (P < 0.05), and the differences from control 2 group were not significant (P > 0.05); the index of the example 1 group is significantly higher than that of the control 3-5 group and the control 6-8 group (P < 0.05);
from the above experimental results, it can be seen that:
(1) The apparent calcium absorption rate, calcium concentration, femur midpoint and metaphyseal bone density, serum calcium concentration and serum phosphorus concentration of the rats in the blank group are all obviously lower than those of the control group and the example 1 group, the activity of alkaline phosphatase in the blank group is higher than that of the example 1 group and the control group, the difference of the activity of alkaline phosphatase between the control group and the example 1 is not obvious, which indicates that the calcium-promoted absorbent is favorable for calcium absorption and bone density increase, and the difference of the activity of alkaline phosphatase indicates that the hormone stress reaction in the model body is reduced through the effective increase of the absorption rate of calcium so as to lead the hormone level in the rats to reach an equilibrium state;
(2) The indexes of the embodiment 1 are obviously higher than those of the control 9, the control 12 and the control 13, which shows that the absorption rate of the group calcium of the composite calcium accelerator is obviously higher than that of the calcium accelerator component added alone on the premise of keeping the consistent total addition amount;
(3) The indexes of the embodiment 1 are obviously higher than those of the control 1, the control 3, the control 4 and the control 5, which shows that the adding amount of the compound calcium absorbent of preferably 12g/kg is better than that of other adding amounts or compound proportion experiment groups in the calcium absorption effect of the three components in the mass ratio of (1:1:1);
(4) The indexes of the embodiment 1 are obviously higher than those of the control 6, the control 7 and the control 8, which shows that under the condition of the same dosage of the calcium promoters, the calcium absorption rate of any one of the calcium promoters is obviously lower than that of the three calcium promoters, and the three calcium promoters have the characteristics of synergy.
It will be apparent that the described embodiments are only individual embodiments of the invention, and not all embodiments. All other implementations, which can be made by those skilled in the art without the benefit of the teachings of this invention, are intended to be within the scope of this invention.