Formula and preparation method of selenium-rich high-protein goat soymilk

Abstract

The invention relates to the technical field of food processing, and discloses a formula and a preparation method of selenium-rich high-protein goat soymilk. The selenium-rich high-protein goat soymilk comprises the following raw materials: selenium-rich soybean milk, selenium-rich goat milk, mineral selenium water, vitamin E and xylose. The sheep soymilk which is high in selenium content, high in bioavailability, high in protein and safe is prepared, plant protein and animal protein are organically combined, meanwhile, a double-source selenium strengthening technology of feed selenium and raw material selenium is adopted, biological fermentation is combined, the bioavailability of selenium is improved, the selenium content and the selenium safety are improved, the side effect of selenium is reduced, and the sheep soymilk is suitable for large-scale production. The problem that traditional goat milk is poor in selenium strengthening effect is solved, meanwhile, the natural mutton smell of goat milk and the faint scent of soybean milk are reserved, and the method is suitable for industrial production of functional dairy products.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, and more specifically to a formula and production method of selenium-rich and high-protein sheep milk soy milk. Background Art

[0002] Selenium-rich foods refer to a type of functional food in which the selenium content in the food is higher than that of ordinary foods through natural growth or artificial intervention. As an essential trace element for the human body, selenium has important physiological functions such as antioxidant, immune enhancement, and cardiovascular protection. Its sources are diverse, such as animal foods like pig kidneys and oysters, plant foods like selenium-rich rice and Brazil nuts, and artificially fortified selenium salts and selenium yeast tablets. However, at present, the technology for selenium fortification of plant sources is relatively mature, but there is a lack of research on combining plant protein and animal protein. In the dairy field, the natural selenium content in sheep milk is relatively low, usually <10 μg / 100 g, and the traditional physical addition method has problems of low biological utilization rate and side effects, while the chemical fortification method will affect the product flavor, stability, and safety.

[0003] Therefore, how to obtain a formula and production method of selenium-rich and high-protein sheep milk soy milk is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a formula and production method of selenium-rich and high-protein sheep milk soy milk.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A selenium-rich and high-protein sheep milk soy milk includes the following raw materials: selenium-rich soybean milk, selenium-rich sheep milk, mineral selenium water, vitamin E, and xylose.

[0007] The present invention also provides a production method of selenium-rich and high-protein sheep milk soy milk, including the following steps:

[0008] (1) Select selenium-rich soybeans, soak them in warm water for 24 h, make them into soybean milk, and boil it until boiling to obtain selenium-rich soybean milk for later use; select selenium-rich forage to feed dairy goats, and the milk squeezed is obtained as selenium-rich sheep milk after pasteurization for later use;

[0009] (2) Mix the selenium-rich sheep milk and selenium-rich soybean milk to obtain a mixed milk, and add mineral selenium water for the first time;

[0010] (3) Inoculate Lactobacillus plantarum and carry out constant-temperature fermentation;

[0011] (4) Add mineral selenium water for the second time, and then add vitamin E and xylose;

[0012] (5) Carry out high-pressure homogenization and UHT sterilization, and finally carry out aseptic filling to obtain selenium-rich and high-protein sheep milk soy milk.

[0013] Preferably, the selenium content of the selenium-enriched soybeans in step (1) is ≥ 3000 μg / kg, and the selenium content of the selenium-enriched forage is ≥ 3000 μg / kg.

[0014] Preferably, the volume ratio of the selenium-enriched goat milk to the selenium-enriched soybean milk in step (2) is 1:3.

[0015] Preferably, the dosage of the mineral selenium water in step (2) is 0.1-0.3% of the mass of the mixed milk.

[0016] Preferably, the inoculation amount of the Lactobacillus plantarum in step (3) is 1×10 6 CFU / mL.

[0017] Preferably, the temperature of the constant-temperature fermentation in step (3) is 37°C, and the time is 4-6 h.

[0018] Preferably, the mass content of the mineral selenium water in step (4) is 0.5-1.5%.

[0019] Preferably, the addition amount of vitamin E in step (4) is 20-50 mg / L.

[0020] Preferably, the pressure of the high-pressure homogenization in step (5) is 15-20 MPa; the sterilization temperature is 85°C, and the time is 4 s.

[0021] It can be seen from the above technical solutions that, compared with the prior art, the present invention provides a formula and a production method of selenium-enriched high-protein goat milk soy milk, which have the following beneficial effects:

[0022] (1) The present invention prepares a selenium-enriched high-protein goat milk soy milk with high selenium content, high biological utilization rate, high protein and safety, organically combines plant protein and animal protein, and at the same time adopts a dual-source selenium fortification technology of feed selenium + raw material selenium, combines biological fermentation to improve the biological utilization rate of selenium, increases the selenium content and the safety of selenium, reduces the side effects of selenium, solves the problem of poor selenium fortification effect of traditional goat milk, and at the same time retains the natural muttony smell of goat milk and the fresh smell of soy milk, and is suitable for the industrial production of functional dairy products.

[0023] (2) The formula of the present invention is scientific. Among the seven essential nutrients for the human body, protein ranks first. Animal protein preferably uses goat milk, with a protein content of up to 3.5 g / 100 mL, which has the highest absorption rate among natural milk sources. It contains short-chain fatty acids and natural lactase, and the absorption rate is as high as 89%, far exceeding that of milk. The composition of essential amino acids is closer to the human body's needs, but the dietary fiber content is relatively low. Through high-pressure homogenization technology, the protein content of soy milk can be increased to 3.5 - 4.0 g / 100 mL, which is rich in dietary fiber but lacks some essential amino acids. Complementing animal protein with plant protein can increase the protein utilization rate by 20 - 30%, significantly enhancing the nutritional value of the product. Selenium can enhance the antioxidant capacity, activate the activity of immune cells, and combine with protein to increase the activity of antioxidant enzymes, synergistically protecting cardiovascular health. Xylose has a low glycemic index and does not stimulate insulin secretion, making it suitable for people with blood sugar control needs, while retaining its natural sweetness.

[0024] (3) The present invention is applicable to a variety of people. For children / pregnant women, high-quality protein can promote growth and development, and selenium supports the health of the fetus. For the elderly / chronic disease patients, with the characteristics of low GI value, high fiber, and rich selenium, it can assist in controlling the three highs. For weak people, the goat soy milk is easy to digest and absorb, and can enhance immunity. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1

[0027] A method for making selenium-rich and high-protein goat soy milk includes the following steps:

[0028] (1) Select selenium-rich soybeans, soak them in warm water for 24 hours, make them into soy milk, and boil it until boiling to obtain selenium-rich soy milk for later use; select selenium-rich forage to feed dairy goats, and the milk obtained after pasteurization is selenium-rich goat milk for later use;

[0029] (2) Mix the selenium-rich goat milk and the selenium-rich soy milk to obtain a mixed milk, and add mineral selenium water for the first time;

[0030] (3) Inoculate Lactobacillus plantarum and carry out constant-temperature fermentation;

[0031] (4) Add mineral selenium water for the second time, and then add vitamin E and xylose;

[0032] (5) Carry out high-pressure homogenization and UHT sterilization, and finally fill it aseptically to obtain selenium-rich and high-protein goat soy milk.

[0033] In step (1), the selenium content of the selenium-rich soybeans is 3000 μg / kg, and the selenium content of the selenium-rich forage is 3000 μg / kg.

[0034] In step (2), the volume ratio of the selenium-rich goat milk to the selenium-rich soybean milk is 1:3.

[0035] In step (2), the dosage of the mineral selenium water is 0.3% of the mass of the mixed milk.

[0036] In step (3), the inoculation amount of the Lactobacillus plantarum is 1×10 6 CFU / mL.

[0037] In step (3), the temperature of the constant-temperature fermentation is 37°C, and the time is 6 h.

[0038] In step (4), the mass content of the mineral selenium water is 1.5%.

[0039] In step (4), the addition amount of vitamin E is 50 mg / L.

[0040] In step (5), the pressure of the high-pressure homogenization is 20 MPa; the sterilization temperature is 85°C, and the time is 4 s.

[0041] The test results show that the selenium content of the selenium-rich high-protein goat milk and soybean milk obtained in Example 1 is 200 μg / 100 mL, and the proportion of organic selenium is 100%.

[0042] Comparative Example 1

[0043] Mix ordinary goat milk and soybean milk at a volume ratio of 1:3 to obtain ordinary goat milk and soybean milk, and the selenium content is 9.2 μg / 100 mL.

[0044] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A selenium-rich high-protein goat soybean milk, characterized in that: It includes the following raw materials: selenium-enriched soybean milk, selenium-enriched goat milk, mineral selenium water, vitamin E, and xylose.

2. The method for making selenium-rich high-protein goat soybean milk according to claim 1, characterized in that: The following steps are involved: (1) selenium-enriched soybeans are selected, soaked in warm water for 24 hours, made into soybean milk, boiled to obtain selenium-enriched soybean milk, and set aside; selenium-enriched forage is selected to feed dairy goats, and the milk is pasteurized to obtain selenium-enriched goat milk, and set aside; (2) mixing selenium-enriched goat milk with selenium-enriched soybean milk to obtain mixed milk, and adding mineral selenium water for the first time; (3) inoculating Lactobacillus plantarum and performing constant temperature fermentation; (4) adding mineral selenium water for the second time, and then adding vitamin E and xylose; (5) high-pressure homogenization and sterilization are performed, and finally aseptic filling is performed to obtain selenium-rich and high-protein goat soybean milk.

3. The method for making selenium-rich high-protein goat soybean milk according to claim 2, characterized in that: The selenium content of the selenium-enriched soybeans in step (1) is ≥3000 μg / kg, and the selenium content of the selenium-enriched forage is ≥3000 μg / kg.

4. The method for making selenium-rich high-protein goat soybean milk according to claim 2, characterized in that: The volume ratio of selenium-enriched goat milk to selenium-enriched soybean milk in step (2) is 1:

3.

5. The method for making selenium-rich high-protein goat soybean milk according to claim 2, characterized in that: The amount of mineral selenium water used in step (2) is 0.1-0.3% of the mass of the mixed milk.

6. The method for making selenium-rich high-protein goat soybean milk according to claim 2, characterized in that: The inoculum amount of Lactobacillus plantarum in step (3) is 1×10 6 CFU / mL.

7. The method for making selenium-rich high-protein goat soybean milk according to claim 2, characterized in that: The constant temperature fermentation temperature in step (3) is 37° C. and the time is 4-6 hours.

8. The method for making selenium-rich high-protein goat soybean milk according to claim 2, characterized in that: The mass content of the mineral selenium water in step (4) is 0.5-1.5%.

9. The method for making selenium-rich high-protein goat soybean milk according to claim 2, characterized in that: The amount of vitamin E added in step (4) is 20-50 mg / L.

10. The method for making selenium-rich high-protein goat soybean milk according to claim 2, characterized in that: The pressure of the high-pressure homogenization in step (5) is 15-20 MPa; the temperature of sterilization is 85° C., and the time is 4 s.