Ⅰ、Introduction to rice protein
Rice protein is mainly composed of four proteins: albumin, globulin, alcohol-soluble protein and glutenin. Rice residue is mainly endosperm protein, which is composed of albumin (4% to 9%) and salt-soluble globulin (10% to 11%). ), alcohol-soluble gluten (3%) and alkali-soluble gluten (66% to 78%).
Ⅱ、Nutritional value of rice protein
The quality of rice protein is recognized as the best among cereal proteins. It is rich in essential amino acids. The content of the first limiting amino acid lysine is higher than that of other cereal proteins. The amino acid composition pattern is close to the WTO/FAO recommended pattern, and it is easy to be digested and absorbed by the human body. . Compared with other cereal proteins, rice protein has higher biological value (BV) and protein utilization rate (PER). The biological value can be as high as 77, and the protein utilization rate is 1.36%~2.56%, ranking first among all kinds of grains. . The quality of rice protein is superior to wheat protein and corn protein, contains high-quality lysine, and is low in allergenicity, making rice protein very suitable for the development of infant food. The amino acid composition pattern of rice protein is better than casein and soy protein isolate, and can meet the amino acid needs of children aged 2 to 5 years old. In addition, rice protein can be processed into soy sauce, high protein powder, protein drinks, peptone and protein foaming powder. If it is degraded into short peptides or amino acids, it can be made into an amino acid nutrient solution with extremely high nutritional value and used for health drinks. , condiments, food additives, etc.
Ⅲ、Effects of rice protein
Strengthen the spleen and stomach
Rice is sweet in nature and mild in taste. It has the effects of replenishing qi, strengthening the spleen and stomach. Eating it in moderation can help improve symptoms such as spleen and stomach qi deficiency, lack of food, lack of appetite, and fatigue.
2. Antidiarrheal and dysentery
Rice is glutinous but not sticky, and can help diarrhea and dysentery, so it is suitable for such patients.
3. Aid digestion
Rice is beneficial to the growth and development of babies. It can also stimulate the secretion of gastric juice, help digestion, and promote the absorption of fat. It can also promote the casein in milk powder to form loose and soft small clots, making it easy to Digestion and absorption.
Ⅳ、Application of rice protein
Research on rice protein at home and abroad mainly includes food additives that improve the physical and chemical functions of food; natural thickeners and foaming agents used as cleaning and care products; high-protein nutritional powder needed by special groups; bioactive peptides that meet specific functions; Active ingredients for health care; protein feed for livestock and poultry production; green and environmentally friendly edible films, etc.
1. Food additives:
Food additives are a type of additives that can improve the quality, color, aroma and taste of food. Appropriate molecular size and amino acid composition will give the protein certain physical and chemical properties, such as solubility, foaming, emulsification, etc. With its hydrophobic, flexible and disordered structure, rice protein is more easily soluble in water and concentrated at the air-liquid interface, showing foaming and emulsifying properties.
2. Protein nutritional supplements
Rice protein has become the preferred plant protein for nutritional supplements for special groups due to its hypoallergenicity and high nutritional value. Rice protein formula rice flour can be used to treat sensitive diarrhea in infants and young children; gluten-free rice protein is more suitable for people with wheat intolerance, allergies or celiac disease; rice protein concentrate can be used when normal protein intake is reduced or the digestive function is impaired. It can better replenish the body's ability and maintain nitrogen balance when it is damaged; it can also assist in the treatment of peptic ulcer, trauma, etc.
3. Development of functional peptides
Modern research shows that amino acid residues in small molecule peptides are more easily digested and absorbed by the human body than free amino acids. Amino acids in the form of small molecule peptides can not only avoid transport competition, but also reduce the toxic and side effects of high concentrations of amino acids. The peptide transport system consumes low energy and is not easily saturated, making research on hydrolyzing protein products to obtain active peptides popular.
4.Protein feed
Rice protein powder, a by-product of preparing starch sugar from rice, is an excellent feed raw material with high protein content, fast energy conversion, high digestibility, good palatability, good disease resistance, low antigenicity and balanced amino acids. Adding rice gluten concentrate to aquatic feeds can not only improve the digestive performance of fish, but also control their excretion, thereby maintaining water quality clarity and controlling water pollution. Rice proteolysis can produce flavor peptides that can replace sodium glutamate (MSG). It can effectively mask the bitter taste, enhance the viscosity of feed, and improve the palatability of feed. It can also chelate trace elements and minerals, which can improve animal feed intake. At the same time, it ensures safety and harmlessness.
Ⅴ、Market Prospects of Rice Protein
On the basis of rice protein type, the rice protein market is segmented into isolate, concentrate, and hydrolyzate. The isolates segment is expected to hold major market share during the forecast period owing to the presence of high protein content. The concentrates segment is expected to exhibit rapid growth over the forecast years owing to the increasing popularity of concentrates and their ability to displace high-cost similar products. The cost-effectiveness of the product is another important reason that is expected to boost the growth of the concentrates segment over the forecast period.
On the basis of application, the rice protein market is segmented into food and beverages, pharmaceuticals, cosmetics, and animal feed. The food and beverages segment is expected to hold a major market share during the forecast year owing to the health benefits of plant-based proteins. The growing demand for rice protein from the bakery industry, dairy industry and sports nutrition energy is expected to boost the growth of this segment in the coming years.
In terms of geography, the global rice protein market is segmented into: North America, Asia Pacific, Europe, South America, Middle East and Africa. North America holds the major market share in the current global rice protein market and is expected to dominate the market during the forecast period owing to the presence of major market players in the region coupled with the presence of the United States in the region, resulting in considerable demand for rice protein. Growing demand for sports and nutritional food and beverage products in North America coupled with rising consumer awareness about the health benefits of rice protein is expected to contribute significantly to the growth of the North American rice protein market.
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