Premium non-GMO plant proteins, binders, and fibers specifically processed to optimize digestibility, pellet stability, and environmental sustainability in aquaculture operations.
The modern aquaculture landscape is experiencing a massive paradigm shift. Driven by a global population set to exceed 9 billion by 2050 and ocean fisheries reaching their ecological limits, sustainable protein sourcing has become a matter of food security. Historically, commercial fish feeds relied almost exclusively on marine-derived fish meal. However, the ecological fragility of forage fish stocks and volatile commodity pricing have forced leading feed mills to seek high-protein plant-based alternatives.
As an industry-leading agricultural industrialization pioneer, Xinrui Group (comprising Shandong Kawah Oils and Guanxian Xinrui Industrial) has scaled clean, closed-loop wet-milling and isolation technologies to supply the global aquafeed sector. Through large-scale production of non-GMO soy protein isolates and vital wheat gluten, we enable manufacturers to formulate premium feeds that reduce dependence on wild-caught marine ingredients without sacrificing growth metrics.
Understanding how crop-derived proteins define physical durability, chemical attractant absorption, and digestive performance in aquatic species.
Vital Wheat Gluten (VWG) functions as a clean, natural binder in extruded fish food. When hydrated, its unique gliadin and glutenin fractions form a cohesive, viscoelastic matrix. This molecular structure wraps around lipids and starch particles, giving the feed excellent elasticity, high pellet durability indexes (PDI), and water stability without relying on chemical binders.
Raw soybeans contain anti-nutritional factors (ANFs) like trypsin inhibitors and lectins, which can cause enteritis in carnivorous species. Our Isolated Soy Protein (ISP) undergoes clean, thermal and chemical extraction processes that denature these inhibitors. This ensures a highly digestible protein option (>90% digestibility) suitable even for sensitive species like salmonids and marine fry.
Standard feeds can dissolve too quickly, causing nutrient leaching and water turbidity. The cross-linked protein networks created by our Wheat Gluten pellets and functional soy protein concentrates form a dense hydrophobic structure. This locks in water-soluble vitamins, amino acids, and attractants until the feed is consumed, maximizing feed conversion ratios (FCR).
How plant-based concentrates function within extrusion equipment.
Our Isolated Soy Protein (ISP) and Vital Wheat Gluten are blended with carbohydrate bases (wheat starch) and custom premixes. The particles are finely ground to ensure a homogeneous mix, promoting even moisture absorption during the next stages.
Steam and water are added to the dry mix. Under heat, the wheat gluten proteins hydrate and begin to link, forming a viscoelastic dough that encapsulates the starches. This step starts the gelatinization process that will determine the final pellet's density and sink rate.
The hydrated mix is subjected to high shear, temperature, and pressure. Under these conditions, the wheat gluten and soy proteins undergo structured cross-linking. As the dough is forced through the die plate, the sudden pressure drop causes vapor flash, creating the target expansion and density for floating, slow-sinking, or sinking pellets.
Adapting plant-based proteins to the unique physiological and feeding behaviors of major commercially farmed species.
Shrimp feed demands long-lasting water stability (typically 2 to 4 hours) because shrimp are slow, benthic feeders that use their appendages to break apart feed pellets.
The Solution: By incorporating 8% to 12% of our Vital Wheat Gluten Pellets / Powder (VWG-P), feed mills can create a durable elastomeric matrix that prevents premature disintegration, reduces nutrient loss, and keeps the pond floor clean.
Marine carnivores require feeds with high protein density (40% to 50%+ crude protein) and high lipid absorption (up to 30%+ fat contents for energy) while keeping enteritis rates low.
The Solution: Combining Functional Soy Protein Concentrate (NON-GMO) with high-emulsification Isolated Soy Protein (ISP 9001BW/9000) allows for high lipid absorption and stable fat retention in the pellet matrix, while providing an easily digestible amino acid profile.
Mass-market freshwater aquaculture requires cost-optimized feeds that still support rapid growth and high feed conversion rates.
The Solution: Utilizing a blend of our cost-effective Soy Dietary Fiber (SDF) and Wheat Starch provides the necessary dietary fiber and digestible carbohydrates, optimizing bowel transit times and digestive health in omnivorous species.
Ornamental feeds must maintain water clarity and contain ingredients that support skin health and vibrant coloration.
The Solution: Our high-purity, low-ash Beverage & Dispersion Type Isolated Soy Protein (9030/9032) dissolves cleanly and digests fully, helping to prevent water turbidity in closed aquarium filters.
Operating a state-of-the-art circular economy supply chain, exporting clean plant proteins and grain co-products directly from our manufacturing facilities.
Established in 2007 with a registered capital of 100 million Yuan, Guanxian Xinrui Industrial Co., Ltd. (formerly known as Guanxian Ruixiang Biotechnology Development Co., Ltd) processes 500,000 tons of wheat flour annually. Using a closed-loop wet-milling process, we isolate wheat starch and vital wheat gluten. Co-products from the starch refining process are recycled into animal feed and commercial ethanol, creating a zero-waste circular production line.
We imported advanced tri-canter separation technology to optimize our wheat gluten production. The entire closed, clean production line ensures our product purity and consistency lead the national market.
Founded in 2014 with 120 million Yuan in registered capital, Shandong Kawah Oils Co., Ltd. is a leading provincial enterprise processing 180,000 tons of domestic Non-GMO soybeans annually. We extract non-GMO soybean oil, food-grade soybean meal, isolated soy protein, and soy dietary fiber in a stepped extraction system. Our core spray drying tower, manufactured by DACHUANYUAN, is one of the largest single-line spray dryers in China, ensuring consistent powder particle distribution.
Established in 2011 with a registered capital of 6 million Yuan, Guanxian Ruichang Trading Co., Ltd. is the dedicated export arm of the Xinrui Group. We export isolated soy protein, wheat gluten, soy dietary fiber, vermicelli, and ethanol directly to international clients, with exports accounting for over 70% of the group's total production capacity.
Expert technical answers addressing formulation, processing, quality assurance, and global trade logistics.
Our complete portfolio of high-purity protein fractions, texturizers, and processing co-products for commercial feed mills.
Xinrui Group
