In the rapidly evolving global functional nutrition sector, the demand for high-protein convenience foods has shifted from niche bodybuilding markets to mainstream mass-market wellness. At the core of this transition is the formulation of premium protein bars, which relies heavily on advanced low and high-moisture extrusion technology.
Formulating extruded protein bars represents a significant biochemical challenge. Large-scale food manufacturers require protein raw materials that can withstand mechanical shear, retain high moisture levels, prevent structural collapse, and maintain soft chewiness over a long shelf life. Our role as a premier wholesale protein manufacturer is to supply highly functional, non-GMO Isolated Soy Protein, Vital Wheat Gluten, and Soy Dietary Fiber that solve these complex material challenges.
Preventing the "hardening effect" typical of older formulations by modifying protein gelling kinetics, allowing protein bars to retain a stable, supple matrix for 12+ months.
Utilizing high-purity, IP Certified Non-GMO soybean extracts to satisfy clean-label initiatives in Western Europe and North America.
Combining isolated soy protein with wheat gluten proteins to deliver complete amino acid vectors while maximizing cost efficiencies.
Established in May 2003, Xinrui Group has grown into a highly diversified industrial conglomerate covering over 1,000 mu of manufacturing footprint. With an annual output value exceeding 2.8 billion Yuan, the company integrates urban cogeneration, municipal heating, and gas supply with advanced agricultural deep processing.
Our core agricultural infrastructure is split into two specialized manufacturing units:
Export integration is spearheaded by Guanxian Ruichang Trading Co., Ltd., ensuring seamless shipping logistics directly from the manufacturing plants to global buyers, with exports representing up to 70% of total group capacities.
Selecting the correct protein isolate depends heavily on the specific mechanical requirements of the extruder. Below is the technical application profile for our primary protein lines.
| Ingredient Grade | Protein Content (Dry Basis) | Moisture Binding Ratio | Primary Functional Role in Bar Extrusion | Gelling Strengths |
|---|---|---|---|---|
| Isolated Soy Protein 9020 (Injection Type) | ≥ 90.0% | 1:5.5 | Provides high elasticity, smooth mouthfeel, and excellent emulsification to prevent fat separation in high-lipid bar formulas. | Medium-High |
| Isolated Soy Protein 9005B (Vegetarian Type) | ≥ 90.0% | 1:5.0 | Ideal for plant-based extrusion. Offers structural density and mimics traditional chewiness without adding off-flavors. | High |
| Isolated Soy Protein 9030 (Dispersion Type) | ≥ 90.0% | 1:4.0 | Engineered for rapid dispersion in liquid phases, ideal for slurry injections prior to extruder twin-screw feed. | Low (High Solubility) |
| Vital Wheat Gluten (VWG-P/PS) | ≥ 75.0% | 1:2.0 | Develops strong viscoelastic web structures, adding tensile strength to long extruded protein ropes. | High Elasticity |
| Soy Dietary Fiber (SDF) | - | 1:8.0 | Acts as an internal moisture reservoir, preventing water migration and retrogradation over long-term storage. | Non-gelling, structuring agent |
Our integrated agricultural supply chain processes natural raw materials into targeted functional food components.
Our flagship range includes specialized meat, emulsion, injection, and beverage types (9007B-C, 9007B-A, 9001BW, 9030/9032, and 9005B). These isolates provide structural integrity, moisture binding, and excellent sensory profiles for various nutrition applications.
Offered in both powder (VWG-P) and pelletized (VWG-PS) forms. Produced via clean, closed tri-canter separation, wheat gluten is essential for building elastic textures and increasing formulation yield in plant-based matrices.
High water-binding capacity fibers that optimize hydration and prevent syneresis in protein bar structures. Soluble and insoluble profiles ensure both functional stability and digestion benefits.
B2B formulation engineers consistently identify bar hardening as their chief product lifecycle challenge. This degradation occurs when proteins compete with carbohydrates and lipids for moisture, leading to crystallization and loss of chewiness.
To address this issue, our research department recommends a multi-phase formulation roadmap:
Get direct insights into our large-scale processing lines, quality testing labs, and industrial execution.
To ensure total reliability in international trade, all products undergo systematic batch analysis in ISO-compliant laboratories. We maintain complete food-safety audits to verify trace compliance across every continent.
We are a group company named Xinrui Group integrating manufacturing and exporting. The manufacturer of soy protein isolate is Shandong Kawah Oils Co., Ltd which produces isolated soy protein 50,000 tons per year. The manufacturer of wheat gluten is Guanxian Xinrui Industrial Co., Ltd. (formerly known as Guanxian Ruixiang Biotechnology Development Co., Ltd) which produces vital wheat gluten 30,000 tons per year. The exporter is named Guanxian Ruichang Trading Co., Ltd.
We have HACCP, ISO9001, ISO22000, BRC, HALAL, KOSHER, IP-NON GMO, SGS etc. Other certificates are available as your request.
Isolated Soy Protein (Specifically our 9005B and 9020 grades) is highly recommended. It offers a dense protein structure that maintains its shape after extrusion. Combining this with 10% to 15% Vital Wheat Gluten creates a more cohesive network, which prevents crumbling and optimizes mouthfeel.
Soy Dietary Fiber has a high water-binding capacity (up to 1:8). In extruded protein formulations, it acts as a mechanical stabilizer that locks in free water. This prevents water molecules from migrating toward the protein particles, which is the main cause of the "hardening effect" over time.
Yes, our raw materials are sourced from non-GMO planting bases in Northeast China. Shandong Kawah Oils operates under strict Identity Preservation (IP) protocols, verified by third-party testing agencies, ensuring the PCR detection levels for GMO genes are completely negative.
Xinrui Group