Core Production Steps of
Plant Protein Beverages
Custom Complete Solutions for All Types of Plant Protein Beverages
From PET bottles, glass bottles and aluminum cans to tetra pak bricks and stand-up pouches, Zhonglian Machinery delivers fully customized plant protein beverage production lines to match every one of your production demands. Whether you manufacture soymilk, coconut milk, almond drink or walnut milk, our tailor-made integrated systems adopt precision high-pressure homogenization, vacuum deodorization and dual sterilization technology to ensure stable emulsion state, rich flavor and long shelf life. Covering full procedures from water treatment, raw material pulping, blending sterilization to end-of-line packaging, we support diversified packaging formats with stable, high-efficiency turnkey equipment.
Comprehensive Advantages of the Production Line
- Wide Compatibility: One production line supports PET bottles, glass bottles, aluminum cans, tetra pak bricks and other packaging formats, and easily switches between soymilk, coconut milk, walnut milk and other plant protein products.
- Controllable Quality: Fully enclosed production throughout the process. High-pressure homogenization ensures stable emulsion without stratification, and dual UHT + retort sterilization ensures product hygiene safety and long shelf life.
- User-friendly Operation: Touchscreen human-machine interface with visual parameter adjustment, easy to master even for new operators. The system supports formula storage and one-click switching for multi-variety production.
- Flexible Capacity: Flexible equipment configuration to match small workshops and large-scale factories, with a wide range of capacity options from 2,000 to 30,000 bottles per hour to meet different investment scales.
- Convenient Maintenance: The food-grade stainless steel body is easy to clean and corrosion-resistant, with universal spare parts and low later maintenance cost. The fully matched CIP cleaning system ensures long-term hygienic and stable production operation.
Classification of Plant Protein Raw Materials by Production Process
Process-oriented Classification for Beverage Production Lines
Different plant raw materials differ greatly in oil, starch, tannin and anti-nutritional substances, which directly determine pre-treatment, grinding, homogenization and stabilization processes. We divide raw materials into four categories based on processing difficulties and matching equipment solutions, to match customized production lines for various plant protein drinks.
High-Oil Hard-to-Homogenize Type
High oil content leads to easy separation of oil and water after grinding, so supporting high-pressure homogenizers, deoiling equipment and emulsification blending systems are required. Oil tends to float and cause layering; roasting, fine grinding, secondary homogenization and emulsification blending systems are equipped to maintain stable liquid system.
Raw materials: Walnut, almond, peanut, coconut meat, macadamia nut, etc.
High-Starch Sediment-Prone Type
Rich in starch substances, prone to sedimentation and tank sticking at low temperature, gelatinization and enzymatic liquefaction processes are essential. Starch will agglomerate and sink after cooling; starch hydrolysis, high-temperature blending and sterilization procedures are matched to reduce bottom sediment.
Raw materials: Soybean, oat, brown rice, millet, quinoa, etc.
Main Packaging Formats
The production line features strong compatibility and flexible switching between packaging formats, meeting demands of supermarkets, catering, distribution and other market channels:
PET Bottle
330ml–1.5L | Light shatterproof mass-market plant protein drink packaging
Glass Bottle
200ml–1L | Airtight premium bottle for high-end nut protein drinks
Aluminum Can
200ml–240ml | Portable pressure-resistant single-serve protein drink container
Tetra Pak Brick
200ml–1L | Aseptic normal-temperature long-shelf-life composite packaging
- PET Bottles: The most mainstream packaging on the market, covering 330ml, 500ml, 1L, 1.5L and other standard specifications. Lightweight, shatter-resistant and easy to transport, it matches all specifications of 3-in-1 monoblock fillers with a capacity of 3,000 to 24,000 bottles per hour.
- Glass Bottles: With excellent sealing performance and premium appearance, it is mostly used for high-end walnut milk, almond drink and other premium plant protein products, matched with dedicated bottle washing and capping equipment for superior display effect.
- Aluminum Cans: Portable and pressure-resistant, mainly for small single-serve protein beverages. Matched with high-speed can filling and seaming units, it features high automation and is suitable for high-volume standardized production.
- Tetra Pak Bricks: Aseptic paper-based composite packaging with excellent barrier performance, covering 200ml, 250ml, 500ml, 1L specifications. With long normal-temperature shelf life, it is widely used in soymilk, coconut milk and other mass-market plant protein drinks.
- Stand-up Pouches: Lightweight and easy to carry, suitable for portable protein drinks and children’s plant protein products. Matched with automatic pouch filling and sealing equipment, it adapts to emerging consumer scenarios.
Plant Protein Beverage Production Line & Production Process Guide
Plant protein beverages, represented by soymilk, coconut milk, almond drink and walnut milk, feature rich plant protein, natural nutrients and smooth taste, enjoying growing demand in the global healthy beverage market. Zhonglian Machinery supplies fully automatic plant protein beverage production lines integrating water treatment, pulping, blending, homogenization, sterilization, filling and packaging. With mature deodorization and homogenization technology and stable dual sterilization process, the lines are compatible with multiple packaging formats and cover capacities from small-batch to large-scale manufacturing, widely applied in mass production of various plant protein drinks.
The six core processes
- Raw Water Treatment Raw water undergoes multi-stage filtration, reverse osmosis and UV sterilization to produce high-purity water, avoiding impurities that affect beverage emulsion stability and flavor.
- Raw Material Pulping & Filtration Raw nuts and beans go through soaking, dehulling, fine grinding and slurry-residue separation to extract fine protein slurry with full retention of nutrients.
- Blending & Homogenization Mix protein slurry with sugar, additives and pure water per formula, then process vacuum deodorization and two-stage high-pressure homogenization for smooth and stable texture.
- UHT Instant Sterilization Ultra-high temperature tubular sterilization eliminates all bacteria and spores in seconds, maximally preserving protein activity and original flavor of raw materials.
- Filling & Secondary Sterilization Complete automatic filling and sealing in enclosed environment, then send to retort for secondary sterilization to greatly extend product shelf life.
- End-of-Line Packaging Defect removal via light inspection, air drying, date coding, labeling, film wrapping, case packing and palletizing to finish finished product packaging.
Production process diagram of plant protein beverage
Core Production Process
The production line adopts the industry-standard dual sterilization process with compact workflow and full automatic control. Six core procedures ensure stable emulsion state, authentic flavor and long shelf life of products:
1. Raw Water Treatment
Raw water goes through multi-stage purification including quartz sand filtration, activated carbon filtration, precision filtration, primary reverse osmosis and UV sterilization to remove sediment, residual chlorine, heavy metals and microorganisms. High-purity production water avoids metal ion-induced protein denaturation and emulsion stratification, which is the foundation of stable product quality. Treated aseptic water is stored in dedicated tanks for subsequent pulping and blending processes.
2. Raw Material Pretreatment & Pulping
Selected raw materials (soybeans, walnuts, almonds, coconut meat, etc.) first go through sorting, rinsing and constant-temperature soaking to soften tissue and improve pulping rate. After dehulling and color protection treatment, materials are processed by coarse grinding and fine grinding via colloid mills, then separated by slurry-residue filters to remove coarse fibers and obtain fine protein slurry. This process fully retains natural nutrients and aroma of raw materials, and is equipped with deodorization units to remove beany flavor and peculiar smell for pure taste.
3. Blending & High-Pressure Homogenization
The prepared protein slurry is delivered to stainless steel blending tanks, mixed with sugar syrup, food additives and pure water in precise proportions according to product formulas. After duplex fine filtration to remove fine impurities, the material undergoes vacuum deaeration and deodorization to eliminate fishy smell and oxidative browning risks. Then two-stage high-pressure homogenization at 40MPa breaks protein molecules into uniform fine particles, ensuring smooth taste and long-term stable emulsion state without stratification and precipitation.
4. UHT Instant Sterilization
The homogenized material liquid is sent to tubular UHT (Ultra-High Temperature) sterilization equipment, completing sterilization within a few seconds. This process thoroughly kills pathogenic bacteria, spoilage bacteria and spores in the liquid, while maximally retaining protein activity and natural flavor due to short heating time. The sterilized liquid is transported to aseptic storage tanks through fully enclosed pipelines, waiting for the filling process.
5. Filling & Secondary Retort Sterilization
As the core quality control section, the 3-in-1 monoblock filler completes container rinsing, hot filling and capping in sequence in a fully enclosed environment, with precise control of filling temperature, liquid level and capping torque to avoid secondary contamination. After filling and sealing, finished products are sent to a horizontal water-bath sterilization retort for secondary sterilization under constant temperature and pressure. This process completely eliminates residual microorganisms in containers, greatly extends product shelf life and ensures stable quality during normal-temperature circulation.
6. End-of-Line Packaging
Sterilized and cooled finished products enter the downstream packaging process: first, light inspection combining manual and machine screening rejects defective products with abnormal liquid level, leaking caps or impurities; then container surfaces are air-dried to remove water stains; after that, date coding (marking production date and batch number) and sleeve labeling / self-adhesive labeling are completed in sequence; finally, products are grouped and packed via shrink wrappers and case packers, and stored in the warehouse after passing quality inspection.
Main Equipment & Performance Features
The entire production line is mainly made of food-grade 304/316 stainless steel, with corrosion resistance, no sanitary dead corners and easy cleaning. Core electrical and pneumatic components are sourced from internationally renowned brands. Equipped with a PLC control system and touchscreen operation interface, it achieves a high degree of automation. It is also fitted with comprehensive safety devices including overload protection, automatic stop upon bottle jamming and cap shortage detection for safe and stable equipment operation.
It consists of quartz sand filters, activated carbon filters, sodium ion filters, precision filters, primary reverse osmosis units, UV sterilizers and aseptic water storage tanks. The system stably produces high-purity water meeting plant protein beverage production standards, effectively prevents protein denaturation and extends the service life of the whole line.
It consists of stainless steel soaking tanks, colloid mills, slurry-residue separators and fine filters. The system completes raw material soaking, dehulling, multi-stage grinding and impurity filtration, and delivers fine, uniform protein slurry for the subsequent blending process with full nutrient retention.
It consists of automatic blending tanks, duplex filters, vacuum deaerators and high-pressure homogenizers. It completes formula batching, vacuum deodorization and two-stage homogenization, ensuring smooth taste and stable emulsion state of the beverage without long-term stratification.
It consists of tubular ultra-high temperature sterilizers, plate heat exchangers and aseptic storage tanks. It achieves instant sterilization of material liquid with high heat efficiency and precise temperature control, maximally retains protein activity and raw material flavor, and provides qualified sterile liquid for the filling process.
It includes fully automatic / semi-automatic bottle blowers, bottle unscramblers and bottle rinsing & spraying equipment. It realizes integrated container forming, sorting and cleaning, and is compatible with various bottle shapes and packaging specifications.
The full range of plant protein beverage filling equipment from Zhonglian Machinery is compatible with various packages such as PET bottles, glass bottles, cans and Tetra Pak cartons. The whole line capacity can be customized according to customers’ actual production demands.
It includes light inspection equipment, bottle air dryers, inkjet / laser coders, sleeve labeling machines, fully automatic shrink wrappers and case packers. The fully automatic workflow ensures neat packaging and clear product identification for finished plant protein beverages.
It performs full cleaning for all pipelines, tanks and equipment of the production line without disassembly, with automatic dosing and cycle control. It strictly meets the sanitary standards of the food industry and maintains long-term hygienic production conditions.
It includes air conveyors for empty bottles and product conveyors for semi-finished & finished products, covering transfer between all production sections. It realizes seamless and stable material delivery between processes and improves the overall operating efficiency of the line.
Investment Information Table for Plant Protein Beverage Production Line
| Package Type | Line Specification | Estimated Investment Budget (USD) | Hourly Production Capacity | Daily Output (8~hour shift) | Number of Operators Required | Estimated Payback Period |
|---|---|---|---|---|---|---|
| PET Bottled | Small~scale | 40,000 ~ 60,000 | 3,000 | 24,000 | 3~4 | 1.7 ~ 2.3 years |
| PET Bottled | Medium~scale | 90,000 ~ 140,000 | 8,000 | 64,000 | 5 ~ 7 | 2.1 ~ 2.8 years |
| PET Bottled | Large~scale | 190,000 ~ 280,000 | 16,000 | 128,000 | 7 ~ 10 | 2.6 ~ 3.3 years |
| Glass Bottled | Small~scale | 50,000 ~ 70,000 | 2,000 | 16,000 | 3 ~ 5 | 1.9 ~ 2.5 years |
| Glass Bottled | Medium~scale | 120,000 ~ 170,000 | 6,000 | 48,000 | 5 ~ 8 | 2.3 ~ 3.0 years |
| Glass Bottled | Large~scale | 230,000 ~ 330,000 | 12,000 | 96,000 | 8 ~ 12 | 2.9 ~ 3.6 years |
| Aluminum Can | Small~scale | 55,000 ~ 75,000 | 6,000 | 48,000 | 3 ~ 5 | 1.8 ~ 2.4 years |
| Aluminum Can | Medium~scale | 110,000 ~ 160,000 | 12,000 | 96,000 | 5 ~ 7 | 2.2 ~ 2.9 years |
| Aluminum Can | Large~scale | 210,000 ~ 290,000 | 24,000 | 192,000 | 8 ~ 11 | 2.7 ~ 3.4 years |
| Tetra Pak Brick | Small~scale | 65,000 ~ 90,000 | 4,000 | 32,000 | 3 ~ 5 | 2.0 ~ 2.6 years |
| Tetra Pak Brick | Medium~scale | 130,000 ~ 190,000 | 10,000 | 80,000 | 6 ~ 8 | 2.4 ~ 3.1 years |
| Tetra Pak Brick | Large~scale | 240,000 ~ 340,000 | 20,000 | 160,000 | 9 ~ 12 | 2.9 ~ 3.7 years |
All information published on this website, including but not limited to product specifications, production capacity calculations, investment cost estimates, and payback period projections, is provided for general reference purposes only. Actual results may vary based on differences in raw material properties, on-site configurations, process requirements, and customized project demands. All technical parameters, pricing and project details shall be subject to the final signed commercial contract.
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