soy protein isolate is known to be a good source of nutrition for the body. What are the advantages of soybean protein isolate? What does the future hold for SPI?
l What is soy protein isolate
l What are the benefits of soy protein isolate
l What is the future research direction of soy protein isolate
Soy protein powder is a nearly purified protein obtained from soybeans extracted from soybeans through a series of processing steps. soy protein isolate contains eight essential amino acids, which are similar to meat, fish, eggs, and milk, and belong to full-price protein.
After refined processing, soybean protein powder has high nutritional value, but the uses are different. Generally speaking, the molecular weight of soybean protein is relatively large, the digestion process is slightly more complicated, and it is more suitable for ordinary people to supplement nutrition; while the molecular weight of whey protein is relatively small, which is more suitable for the elderly, children and people recovering from illness.
Since the natural soybean protein isolate functional properties are not prominent, it is difficult to meet the different requirements of protein functional properties in food systems. To this end, some methods are needed to improve the functional properties of soybean protein isolate, so that it can be used in a variety of food systems. The modification of SPI is to essentially change the functional properties of soybean protein isolate through physical, chemical, enzymatic or genetic engineering methods, so as to achieve the required quality characteristics of food and expand the application scope of soybean protein isolate in the field of food. The hydrolysate prepared by enzymatic modification of SPI not only has improved functional properties, but also has improved nutritional value. Because of its more obvious advantages, enzymatic modification is considered to be a potential modification method and has become a research hotspot.
If you are looking for a good quality and reasonable price of soybean protein isolate products,Xinrui Group can provide you with the best
Guanxian Xinrui Group is located in Guanxian Industrial Zone, founded in 2003, covers an area of more than 700 fields, with a total assets of 1.3 billion yuan, more than 1,000 employees. Based on the strategy of comprehensive utilization of resources, energy saving and emission reduction, and environmental protection, the overall industrial layout of the company has been developing for more than ten years, has developed into a scientific and technological research and development, intensive processing of agricultural products, import and export trade as one of the provincial key leading enterprises in agricultural industrialization. The way of zero-emission circular economy development from wheat and soybean primary processing, intensive processing, sewage treatment, reclaimed water reuse to sludge production of organic fertilizer for soil improvement and rehabilitation has been preliminarily realized. The company's brand products sell well around more than 20 provinces and cities, and exported to Southeast Asia, South, the Middle East, Norway, Russia and more than 40 countries and regions, product quality excellence, well received by customers at home and abroad. Has been identified by the Shandong provincial government as "Provincial-level key, leading enterprises in agricultural industrialization in Shandong province”, and the top 10 grain and oil industrial park.
The company at this stage vigorously develops wheat, soybean two major circular economy industrial chains.
The group began to develop 300,000 tons of wheat processing industry in 2007. The industry chain is to give priority to extracting high value-added refined flour from wheat. Vital Wheat gluten and superior starch were extracted from secondary flour with lower added value by downstream workshop, (Vital Wheat Gluten is used in high-gluten flour compounding, vegetarian food processing, and superior starch is used in the processing of Vermicelli, cold powder and other products.) The starch pulp composed of residual secondary starch and Pentosan was used to extract food-grade alcohol and medical alcohol through saccharification and fermentation in the production line of alcohol.
On the basis of summarizing the successful experience of wheat industry chain, the company developed 180,000 tons of soybean deep processing industry chain in 2015. Non-GMO soybean oil and food-grade soybean meal were produced from non-GMO soybean. Soybean meal can be used in food processing industry such as 1,000-page Bean Curd, meatball, ham, chafing dish and so on, it can be used in industries such as ketchup and dietary supplement.
The high concentration organic wastewater from the production of wheat and soybean industry chain was transported to the wastewater treatment plant. The remaining high-concentration organic wastewater is converted into biogas by anaerobic fermentation, and the biogas is purified and desulphurized, and then used in power generation or steam supply industry chain. After anaerobic treatment of wastewater by aerobic treatment and then advanced treatment to achieve the recycling water standard as heat and power co-generation boiler make-up water, industrial chain recycling water. The sludge from sewage treatment was fermented at high temperature after dehydration and processed into organic fertilizer, which was used to improve the soil remediation and improve the yield and quality of crops. The wheat and soybean produced by the base are used as raw materials in the industrial chain, thus realizing the development of closed-cycle economy from wheat and soybean planting, intensive processing, sewage treatment to soil improvement and rehabilitation of the planting base.
The 2021 Company actively adapts to the new situation, develops new forms of business, relies on the national rural revitalization industrial policy, takes the industrial prosperity as the lead, encircles the agricultural circular economy chain to extend the strong chain, raises the file to upgrade, an investment of 220 million yuan will be made to build a new project for intensive processing of highly efficient circular agricultural products. The first phase of the project started construction in February of 21, and the trial operation was realized at the end of December. By means of upgrading and building new production line, the project improves the original gluten production line, three new wheat gluten production lines, two wheat starch production lines, sludge and production waste material conversion of organic fertilizer production lines, the project to low value-added secondary flour as raw materials, to build digital, intelligent chemical plants, reduce labor by 40% and energy consumption by 15% , and realize on-line quality real-time monitoring, standardized production, greatly improve product quality, to meet the differentiated and specific needs of different customers, at the same time into the terminal market, the product directly to the dinner table. By upgrading the advanced treatment process of wastewater to further improve the utilization rate of water resources; by reusing sludge and production waste into organic fertilizer back to the field, raw materials are all eaten and squeezed, leaving no waste, finally achieve the whole industry chain of green closed-loop management.
The company’s main products are Vital Wheat Gluten, wheat starch, food-grade alcohol, non-GMO soybean oil, soy protein isolate, soybean dietary fiber, etc. , among them, Vital Wheat Gluten, soy protein isolate and soybean dietary fiber products are exported to more than 40 countries and regions, and are the key export enterprises in Liaocheng (Guanxian Ruichang Trading Co. , Ltd.) . With the continuous development and growth of the company, the management system has been gradually internationalized, certification through the most stringent food quality and safety system, such as BRC, HACCP, ISO 9000 & 14000, HALAL, KOSHER and so on. In order to open up the market and stable market, we actively participate in various industry exhibitions and seminars at home and abroad, and achieved good results.
The company insists the concept of“Integrity”, “Competition”, “Responsibility” and“Innovation” and the core values, and Shandong Liaocheng University‘s Dongchang College, Institute of Agricultural Product Processing, Chinese Academy of Agricultural Sciences and other institutions of high-standard learning, and actively recruit external professional engineers, and constantly develop high-tech, distinctive and competitive products. It is implementing projects such as wheat silk protein, soybean protein concentrate, anhydrous ethanol, high-temperature fermentation of sludge organic fertilizer, high-efficiency wastewater reuse, etc. . At the same time, the company continues to upgrade through technology, optimize existing projects, and improve the management level, product quality to obtain continuous recognition and support of customers.
Looking forward to the future, with the continuous care of government departments at all levels, the group’s chairman, General Manager and colleagues in the strong cooperation, the company has always insisted on standardized management, stable development, and seek opportunities in stability, to seek development in reform, to insist on development and management as an important task, to emphasize the quality of economic operation, to make full use of the company's overall advantages, to actively adjust business strategies, and to strengthen the control of business risks, following the development path of scientific and technological innovation and constantly exploring new products, adhering to the policy of independent development and co-existence of industry, university and research, and planning and layout in accordance with industry standards and requirements, to condense the technology target, improve the innovation ability and train the high-quality scientific research personnel, to realize the industrialization of science and technology, to develop more high-tech products to meet the market demand, to produce the generation, to reserve the generation, to develop a new generation of plant protein extraction and application enterprises with sustainable and innovative development, to promote scientific and technological progress in the industry and strive to be a leader in the industry, we are committed to making Xinrui group a leading plant protein production base in China.
Soya Beans And Milk
Soy protein is a type of protein which comes from soybean plants.
It comes in 3 different forms – soy flour, concentrates, and soy protein isolates.
The isolates are commonly used in protein powders and health supplements due to their muscle-building qualities.
Soy protein contains essential amino acids which cannot be produced naturally by the body. For this reason, many people on a restricted diet, like vegetarians, consume soy protein supplements for nutritional benefits.
Due to its high volume of amino acids, soy protein is considered to be a “complete protein” by nutritionists, containing similar benefits to the protein found in legume pulses.
It is also one of the cheapest supplemental sources of protein and can be found in foods such as tofu and soy milk.
Soy protein isolate is often used in protein shakes as an alternative to whey, which some people can be sensitive to or avoid consuming for dietary reasons.
What are the types of Soy Protein?
There are two main different types of soy protein – soy protein isolate （Ruiqianjia brand） and soy protein concentrate. Both of these products come from soybean meal, which is then dehulled and defatted before being processed into different parts.
The isolate is a powdered protein supplement which is common in soy protein shakes and supplements. Isolate is 90-95% protein and contains almost no fat or carbohydrates.
Soy protein concentrate, on the other hand, is manufactured by taking the dehulled/defatted soybean meal and removing some of the carbohydrates from it. It is often used in baking, cereals, and as an ingredient for various food products.The concentrate is very easy to digest and contains a lot of fiber, so it is often recommended for children, elderly people, and pregnant women who need to keep a close eye on their health.
Soy Protein Benefits
According to the Food & Drug Administration in the US, soy protein can be used as a good substitute for animal products in a plant-based diet.
2.Fights Heart Problems
Soy reduces LDL cholesterol levels in your body, which is instrumental in fighting heart disease problems.
3.Great for Bone Health
Soy contains phytoestrogen, which makes it easier to absorb calcium. As a result, many soy protein supplements come fortified with calcium, helping to increase your calcium intake. This helps to prevent a loss in bone mass and fights against osteoporosis, a condition where your bones deteriorate as you get older.
4. Increases Energy
Undergoing some intense exercise? Doing some mad workouts at the gym? Soy contains amino acids which can be used by the body and converted into energy. This way, soy protein not only helps you with muscle-building – it also keeps your energy up when you’re working hard to acquire that lean muscle mass!
5. Helps to Prevent Cancer
Soy contains genistein-phytochemicals that have been found to lower risks of prostate cancer and breast cancer, making it attractive to both male and female health nuts alike. The genistein found in soy protein can actually stop tumor cells from growing altogether, halting cancer in its tracks before it can develop and get worse.
Xinrui Group – Shandong Kawah Oils: factory direct export good quality isolated soy protein.
Vital Wheat Gluten is one of the most popular healthy foods. What role does wheat gluten play in the food industry? What are the advantages of organic wheat gluten
l What is organic wheat gluten
l What is the use of organic wheat gluten in food
l What are the health effects of organic wheat gluten
Vital Wheat Gluten has unique properties and is widely used in the food industry and feed industry for the preparation of edible films, bioactive small peptides and other products. Gluten flour, also known as active gluten flour and wheat gluten protein, is a natural protein extracted from wheat (flour). It is composed of a variety of amino acids. The protein content is as high as 75% to 85%. It is a nutrient-rich vegetable protein resource. It has viscosity, elasticity, extensibility, film formability and liposuction. Gluten is an excellent dough improver, which is widely used in the production of bread, noodles and instant noodles. It is used as a water-retaining agent in meat products, and it is also the basic raw material of high-grade aquatic feed.
1. The application of organic wheat gluten in bread flour can significantly improve the water absorption rate of dough, increase dough elasticity, air retention, dough kneading resistance and stability, and significantly improve the internal structure and baking quality of bread. And due to the high protein content of gluten, Maillard reaction often occurs during the baking process, resulting in an attractive aroma, which can improve the quality of bread.
2. organic wheat gluten can also improve the elasticity of foods. For example, after adding gluten to the fish cake, the gluten is restored to a ductile gluten network structure due to water absorption. After kneading, it is evenly mixed with the fish meat. Through heating, the gluten continuously absorbs water and heat denatures, strengthening the fish cake. The elasticity of the sausage; the use of gluten denatured by reducing agents or enzymes in the production of sausage products can enhance the elasticity of sausages.
3. Using wheat gluten as raw material, the edible film prepared has the characteristics of good mechanical properties, edible and degradable properties, and is often used as the substrate of edible film. Studies have shown that the edible film made from gluten has an ideal fresh-keeping effect.
The traditional view holds that protein plays a nutritional role in food, and protein can only be absorbed and utilized by the human body after it is decomposed into free amino acids. However, in recent years, studies have found that after digestion in the human body, proteins are mostly in the form of small peptides composed of 2-7 amino acid molecules, and then directly absorbed by the intestinal tract, and the proportion of amino acids absorbed is very small. At present, the extraction of bioactive small peptides from gluten has become a hot spot in functional food research.
If you are looking for a good quality and reasonable price of Vital Wheat Gluten,Xinrui Group can provide you with the best.
The protein separated from soybean meal. They contain more than 90% protein. The basic principle of producing SPI is simple. Using defatted soybean flakes as raw materials, protein is first dissolved in water. The solution is separated from the solid residue. Finally, the protein is washed out of the solution, separated and dried.
Isolated soy protein is a kind of surfactant, which can reduce the surface tension of water and oil as well as air. It is easy to form stable emulsion. In the process of making baked food, frozen food and soup food, adding soy protein isolate as emulsifier can make the product stable.
Isolated soy protein can be added into meat products to form emulsion and gel matrix to prevent fat from moving to the surface. Therefore, it can promote fat absorption or fat binding. It can reduce the loss of fat and juice during the processing of meat products, help maintain the stability of appearance, and the oil absorption rate of protein separated is 154%.
It has high viscosity, plasticity and elasticity. It can be used not only as a carrier of water, but also as a carrier of flavoring agent, sugar and other complexes, which is very beneficial to food processing.
In soy protein, the foaming property of protein isolate is the best. The foaming property of soybean protein can give loose structure and good taste to food.
When the meat is chopped, the mixture of protein isolate and egg protein is applied on the surface of the fiber to form a thin film, which is easy to dry, can prevent odor loss, is conducive to the rehydration process, and provides a reasonable structure for the rehydrated products.
With lifestyle changes in recent years, the number of prepared meat products is quietly increasing, ranging from a variety of semi-prepared chicken nuggets, seasoned meat steaks and barbecue products to convenience store staples such as kebab and bento. Through the retail end, prepared meat products are increasingly infiltrating the domestic consumption of the Chinese public, well is gradually becoming a consumer popular. In regulate the development of meat products, soybean protein is a kind of commonly used additives, not only can complement necessary hydrogen acids necessary for human, and mesh has good features such as foaming, emulsification and gel, so it can obviously improve the food's taste, increase elasticity, oily food and water retention, improve the storage performance of food, etc., can reduce the production cost at the same time, In regulate meat processing has the important role
Soybean flour mostly "defatted soybean" trends, because of its protein content is low, so the price is straight, used in meat products, can keep 2 times their own weight of water and flour emulsify material can keep the same weight of cerebral fat class material during hot working out oil, soy meal less functional, There are many shortcomings in taste and flavor, and many restrictions on the range and usage.
Soy Protein Concentrate
Soy Protein Concentrate’s protein content of about 70%, most used in meat products. Soybean concentrated heavy force since the emulsifying gel proportion is protein: water: fat = 1:4:3, It can improve the taste and structure,to improve protein content of meat products.
Isolated Soy Protein
Soy Protein Isolate is a kind of protein produced from low temperature desoluble soybean flour. The protein content is more than 90%, and there are nearly 20 kinds of amino acids, including essential amino acids for human body. It is rich in nutrition and does not contain cholesterol. It is widely used in prepared meat products.
Textured Soy Protein
Textured Soy Protein is made of defatted soya powder, soy protein concentrate or soybean protein isolate as raw materials by mechanical and heat action such as mixing, extrusion and chemical. These proteins have a certain fleshy taste sensation. Therefore, it has special application in meat conditioning and can replace some lean meat raw materials.
1. Water-retaining property
The water retention of soy protein plays an important role in meat production, especially its ability to absorb, combine and bind water in the processing of minced meat products, which can not only retain the juice of raw meat, increase the taste and flavor of products, but also increase the yield of products. The water retention of proteins is also affected by many factors, such as viscosity, pH, ionization strength and temperature. Ma Yuxiang studied the effect of the addition of soy protein isolate on salt-soluble muscle protein heat-induced gel, and the experimental results showed that the addition of soy protein isolate made the ultrastructure of the mixed protein gel rough, reduced the strength of the mixed protein gel, but improved the water-retaining capacity of the gel.
2. Emulsifying property
Emulsifying soybean protein hydrophilic, lipophilic determines its emulsifying stability, soybean protein is a surfactant, it can reduce the surface tension of water and oil, and reduce the surface tension of water and air, so it is easy to form a more stable emulsion. The emulsified oil droplets are stabilized by the heavy white material that accumulates on the surface of the oil droplets, forming a protective layer. This protective layer can prevent the accumulation of oil droplets and the destruction of the emulsification state, so that the emulsification performance is stable. In the preparation of baked food, frozen food and soup food, a large number of studies have been reported on adding human soy protein isolate as emulsifier to stabilize the product state.
3. Caking property
Protein molecular bonding, strong solubility and absorption ability make it has caking property, It apply to adjust food properties. When protein heatto 80 ℃, proteinwill happen business solution or analysis solution, molecular volume increases, viscosity increases, more than 90 ℃ viscosity decreases, pH in six to eight, protein structure is the most stable, maximum viscosity; Above 11, the viscosity is sharply reduced due to the breakdown of protein bonding.
4. Gel property
When meat products containing soy protein are heated, they will form a salty gelatinous structure, which has an obvious effect on the water retention and taste of the products due to the hardness, elasticity, flake and texture of the products. The formation of gel is affected by many factors, including heating time, temperature and concentration of soy protein solution.
Soybean protein contains essential amino acids, which can strengthen the nutritional composition of prepared meat products and play an important role in improving the quality of prepared meat products.
1.High cost effective protein source with enhanced nutrition
Soybean protein has been widely used in the preparation of meat products because of its low price and good protein quality. Adding soybean protein to all kinds of frozen meat products can not only improve the ratio of protein, but also make the nutrition of protein more comprehensive and reasonable.
2.Flavoring in prepared meat products
Soybean protein contains a small amount of fatty acids and carbohydrates, after heating will produce unique aroma, and regulate the products sometimes raw meat (fish) or ingredients and due to the processing of the I art, such as sterilization produced some of the unpleasant smell, may cause consumers antipathy, soy protein unique fragrance smell to above has certain masking effect, Therefore, soy protein has a certain flavoring effect.
3.Soy protein can improve the structure of prepared meat products
Soybean protein has good gel properties and bonding properties, which can effectively improve the texture of the product, enhance the elasticity and hardness of the product, and make the product compact in structure and better in taste. More meaty, especially in fast east meat country, live meatballs and meat products are more sold.
4.The emulsifying property of soybean protein was used to solve the problem of oil coming out of water of prepared meat products
Water, oil is one of the most common problems in the process of cooking in the conditioning of internal products, using the emulsification characteristics of soybean heavy white, so that the water and oil form a grain for the field network structure, so that the water and oil in the conditioning of internal products are very south, in the storage and cooking process of water, oil hidden less.
Two important processes for processing prepared meat products are processing raw meat and curing ingredients. According to the processing characteristics of prepared meat products, there are usually the following adding methods:
Large pieces of fresh meat are added with pickling solution. The soybean protein soluble brine brine is added by injection, and then other processing methods are carried out. This method can make protein evenly distributed in meat. Soy protein generally accounts for 2 to 6 percent of meat products by weight.
That is, soybean protein products in chopping, rolling, stirring process at the beginning of the state of dry material evenly added, but the dry material should be added to the meat products before fat.
In order to make full use of the functional characteristics of soybean protein, soybean protein products had better be hydrated before adding and made into a dispersion containing 18% of protein. The water ratio is soybean powder: water is 1:(1.5~1.8), protein concentrate: water is 1:(2~2.5), protein isolate: water is 1:(3.5~4).
Regulate meat as an emerging industry, its accessories added by the wide attention of the society, as a result of the good function of the soy protein, a variety of features, has become an important conditioning meat processing accessories, the size of the amount of its flavor, texture, structure plays an important role, If add a little amount of product caused not harmonious, not masking bad smell flavor, not to reach the effect of flavouring, And it will lead to loose product structure, soft taste and other adverse results; On the contrary, excessive use of the product will cause too strong bean smell, taste hard and other adverse phenomenons, the specific amount of soy protein to be added according to the quality of soy protein and the type of product to be developed to decide comprehensively.
The products of vital wheat gluten remained very popular. What is the historical development of vital wheat gluten? What are the functions and uses of wheat gluten?
l What is the development of vital wheat gluten
l What is the advantage of vital wheat gluten
l What is vital wheat gluten used for
The study of cereal protein has a history of 250 years, Beccari first confirmed the existence of wheat protein in 1728. Since then, researchers have never stopped studying wheat protein. Among them, TBOsborne, who is known as the father of plant protein chemistry, has been more influential. He divided wheat proteins into different types according to their solubility in a series of solvents: water soluble. albumin, salt-soluble globulin, alcohol-soluble prolamin, and water- and alcohol-insoluble glutenin.
1. Gluten is a substance obtained after wheat flour is washed with water to remove starch and water-soluble components. In production, it generally refers to water-insoluble protein, which also includes a certain content of lipids (about 10%) and water-insoluble starch. Wheat gluten and bran are often used as feedstuffs as by-products of wheat starch processing.
2. With the in-depth research and the food industry's demand for additives, the value of wheat gluten goes far beyond the wheat starch itself. The research on the deep processing and functional food using gluten as raw material has also attracted more and more attention. Especially after the discovery of wheat protein peptides with various biological activities, such as antioxidant, antihypertensive, and immunity-enhancing activities, the extraction of biologically active small peptides from gluten has become a research hotspot, which is the deep processing of gluten. an important part of research.
wheat gluten flour, also known as active wheat gluten flour and wheat gluten protein, is a natural protein extracted from wheat (flour). It is composed of a variety of amino acids. The protein content is as high as 75% to 85%, and it contains fifteen kinds of amino acids necessary for the human body. , is a nutrient-rich vegetable protein resource. It has viscosity, elasticity, extensibility, film forming and liposuction. wheat gluten is an excellent dough improver, widely used in the production of bread, noodles and instant noodles. It can be used as a water-retaining agent in meat products, and it is also the basic raw material of high-grade aquatic feed. At present, gluten is also used as a high-efficiency green flour gluten enhancer in China. It is used in the production of high-wheat gluten flour and special flour for bread, and the amount of addition is not limited. Gluten is also an effective way to increase the content of vegetable protein in food. method.
If you are looking for a good quality and reasonable price of vital wheat gluten products,Xinrui Group can provide you with the best
P.1: Xinrui Group – Plantation Base – N-GMO Soybean Plants
Soybeans were cultivated in Asia about 3,000 years ago. Soy was first introduced to Europe in the early 18th century and to British colonies in North America in 1765, where it was first grown for hay. Benjamin Franklin wrote a letter in 1770 mentioning bringing soybeans home from England. Soybeans did not become an important crop outside of Asia until about 1910. Soy was introduced to Africa from China in the late 19th Century and is now widespread across the continent.
In America soy was considered an industrial product only and not used as a food prior to the 1920’s. Traditional non-fermented food uses of soybeans include soy milk and from the latter tofu and tofu skin. Fermented foods include soy sauce, fermented bean paste, natto, and tempeh, among others. Originally, soy protein concentrates and isolates were used by the meat industry to bind fat and water in meat applications and to increase protein content in lower grade sausages. They were crudely refined and if added at above 5% amounts, they imparted a “beany” flavor to the finished product. As technology advanced soy products were refined further and exhibit a neutral flavor today.
In the past the soybean industry begged for acceptance but today soybean products can be found in every supermarket. Differently flavored soy milk and roasted soybeans lie next to almonds, walnuts and peanuts. Today soy proteins are considered not just a filler material, but a “good food” and are used by athletes in diet and muscle building drinks or as refreshing fruit smoothies.
P.2: Xinrui Group –N-GMO Soybeans
Soybeans are considered to be a source of complete protein. A complete protein is one that contains significant amounts of all the essential amino acids that must be provided to the human body because of the body’s inability to synthesize them. For this reason soy is a good source of protein amongst many others for vegetarians and vegans or for people who want to reduce the amount of meat they eat. They can replace meat with soy protein products without requiring major adjustments elsewhere in the diet. From the soybean many other products are obtained such as: soy flour, textured vegetable protein, soy oil, soy protein concentrate, soy protein isolate, soy yoghurt, soy milk and animal feed for farm raised fish, poultry and cattle.
The dramatic increase in interest in soy products is largely credited to the 1995 ruling of the Food and Drug Administration allowing health claims for foods containing 6.25 g of protein per serving. The FDA approved soy as an official cholesterol-lowering food along with other heart and health benefits. The FDA granted the following health claim for soy: “25 grams of soy protein a day, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease.”
Soy flour is made by milling soybeans. Depending on the amount of oil extracted the flour can be full-fat or de-fatted. It can be made as fine powder or more coarse soy grits. Protein content of different soy flours:
Full-fat soy flour - 35%.
Low-fat soy flour - 45%.
Defatted soy flour - 47%.
Soybeans contain all three of the nutrients required for good nutrition: complete protein, carbohydrate and fat as well as vitamins and minerals including calcium, folic acid and iron. The composition of soy protein is nearly equivalent in quality to meat, milk and egg protein. Soybean oil is 61% polyunsaturated fat and 24% monounsaturated fat which is comparable to the total unsaturated fat content of other vegetable oils. Soybean oil contains no cholesterol.
Commercially processed meats contain soy protein today throughout the world. Soy proteins are used in hot dogs, other sausages, whole muscle foods, salamis, pepperoni pizza toppings, meat patties, vegetarian sausages etc. Hobbyist have also discovered that adding some soy protein allowed them to add more water and improved the texture of the sausage. It eliminated shrivelling and made the sausage plumper.
Soy concentrates and isolates are used in sausages, burgers and other meat products. Soy proteins when mixed with ground meat will form a gel upon heating, entrapping liquid and moisture. They increase firmness and juiciness of the product and reduce cooking loss during frying. In addition they enrich the protein content of many products and make them healthier by reducing the amount of saturated fat and cholesterol that otherwise would be present. Soy protein powders are the most commonly added protein to meat products at around 2-3% as the larger amounts may impart a “beany” flavor to the product. They bind water extremely well and cover fat particles with fine emulsion. This prevents fats from lumping together. The sausage will be juicier, plumper and have less shrivelling.
Soy protein concentrate (about 60% protein), is a natural product that contains around 60% protein and retains most of the soybean’s dietary fiber. SPC can bind 4 parts of water. However, soy concentrates do not form the real gel as they contain some of the insoluble fiber that prevents gel formation; they only form a paste. This does not create a problem as the sausage batter will never be emulsified to the extent that the yoghurt or smoothie drinks are. Before processing, soy protein concentrate is re-hydrated at a ratio of 1:3.
Soy protein isolate, is a natural product that contains at least 90% protein and no other ingredients. It is made from de-fatted soy meal by removing most of the fats and carbohydrates. Therefore, soy protein isolate has a very neutral flavour compared to other soy products. As soy protein isolate is more refined, it costs slightly more than soy protein concentrate. Soy protein isolate can bind 5 parts of water. Soy isolates are excellent emulsifiers of fat and their ability to produce the real gel contributes to the increased firmness of the product. Isolates are added to add juiciness, cohesiveness, and viscosity to a variety of meat, seafood, and poultry products.
P.3: Xinrui Group –Ruiqianjia Brand ISP – Good gel and emulsification.
For making quality sausages the recommended mixing ratio is 1 part of soy protein isolate to 3.3 parts of water. SPI is chosen for delicate products that require superior flavor such as yoghurt, cheese, whole muscle foods and healthy drinks. Isolated Soy protein manufactured by Xinrui Group - Shandong Kawah Oils and exported by Guanxian Ruichang Trading usually contains 90% of protein.
P.4: N-GMO –SPI Made by Xinrui Group - Shandong Kawah Oils