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Pumpkin Seed Protein 60% Powder
Product Introduction
Our pumpkin seed protein powder is manufactured from premium-grade *Cucurbita pepo* seeds sourced from controlled agricultural regions in Northwest China, where the temperate continental climate and alkaline loess soil produce seeds with naturally high protein density and low environmental contaminant exposure. Every batch of raw seeds is traceable to contracted farm cooperatives, with full chain-of-custody documentation from field to finished powder.
The manufacturing process begins with cold-press oil extraction at temperatures below 40°C, which removes the oil fraction while preserving the heat-sensitive protein structure and amino acid integrity. The resulting defatted protein cake is then gently milled, sifted, and air-classified to achieve target protein concentrations.
Our proprietary low-temperature processing yields a fine, light yellow to pale green powder (L value > 78) with a mild, clean nutty flavor and no beany or bitter off-notes. This lighter color profile is a significant formulation advantage — it allows higher inclusion rates in vanilla, berry, or neutral-flavored products without casting a dark green or "muddy" hue that requires color masking agents.
Available Specifications
Standard Grade (≥50% protein, dry basis)** — Retains higher dietary fiber content (10–15%), ideal for protein bars, bakery, and solid food applications where water-holding capacity and structural binding are valued.
High-Purity Grade (≥60% protein, dry basis)** — Further air-classified to reduce fiber and improve particle uniformity, recommended for beverage systems, RTD shakes, and premium supplement powders where smooth mouthfeel and dispersibility are critical.
product benefits
Complete Plant Protein with Superior Mineral Density
Pumpkin seed protein contains all nine essential amino acids, qualifying it as a complete protein source — a distinction shared by only a handful of plant proteins. Its in vitro protein digestibility has been measured at approximately 85%, exceeding that of sorghum (42–64%) and comparable to soybean (75–80%) at equivalent processing levels (Foods, 2025). What truly sets it apart, however, is its mineral density: per 30g serving, it delivers 2.5–3.0 mg of zinc and 80–100 mg of magnesium — levels 2–5× higher than pea, soy, or hemp protein on a per-gram-of-protein basis.
Natural Zinc Source for Immune & Reproductive Health Positioning
With 6–9 mg of zinc per 100g, pumpkin seed protein is one of the richest plant-based zinc sources available to food formulators. Zinc supports immune cell function, protein synthesis, and male reproductive health — the prostate gland contains the highest zinc concentration of any soft tissue in the human body. This allows brands to build "natural source of zinc" nutrition claims (subject to local regulatory thresholds, e.g., EU Regulation 1924/2006) and target men's health, immune support, and active aging product categories.
High Arginine Content for Sports & Cardiovascular Nutrition
Arginine, at approximately 12 g per 100g of protein, is the most abundant amino acid in pumpkin seed protein. As a precursor to nitric oxide, arginine supports vasodilation, blood flow, and exercise performance. Combined with meaningful leucine levels (6.5–8.0 g/100g) — the primary trigger for muscle protein synthesis — this amino acid profile makes pumpkin seed protein a strong candidate for pre-workout, post-workout, and cardiovascular health formulations.
Naturally Allergen-Free & Clean-Label Compatible
Pumpkin seeds are not among the FDA's Big 9 allergens or listed in EU Regulation 1169/2011 Annex II. Our product is naturally free from gluten, dairy, soy, peanuts, tree nuts, and sesame, and is manufactured in a dedicated facility with documented allergen control procedures. This makes it suitable for hypoallergenic product lines, "free-from" positioning, and clinical/medical nutrition applications where allergen cross-contamination risk must be minimized.
Customer Case Studies
To protect client confidentiality, brand names are withheld. The following cases illustrate real-world formulation scenarios and outcomes.
Case 1: European Plant-Based Sports Nutrition Brand
A European sports nutrition brand sought to differentiate its vegan protein line from a crowded market dominated by pea and soy isolates. They needed an ingredient that could support a "mineral-rich" and "naturally complete amino acid" positioning while maintaining smooth texture in RTD shakes.
We supplied our 70% high-purity grade at a 25% inclusion rate, blended with pea protein isolate (75%). Our technical team provided a custom amino acid score analysis demonstrating that the blend achieved a PDCAAS of 0.92 — comparable to whey protein concentrate. We also provided dispersion optimization data and recommended a stabilizer package.
The launched product achieved a "source of zinc" and "source of magnesium" dual nutrition claim under EU Regulation 1924/2006. In consumer sensory testing, 82% of panelists rated the texture as "smooth" or "very smooth," and the product line expanded from one SKU to three flavors within 12 months.
Case 2: North American Men's Health Supplement Manufacturer
A supplement manufacturer specializing in men's health wanted to develop a prostate-support protein powder that went beyond standard saw palmetto + zinc tablets. They needed a protein base that naturally contributed zinc and arginine, reducing the need for synthetic fortification.
We supplied our 60% standard grade as the primary protein source (40% of formula), combined with the client's existing botanical blend. Our COA documentation verified consistent zinc levels of 7–8 mg/100g, allowing the product to carry a "naturally occurring zinc" label claim rather than "zinc-fortified."
The product launched with a "whole-food zinc from pumpkin seed protein" marketing angle, achieving 30% higher repeat purchase rate than the client's comparable tablet product in its first 6 months. Batch-to-batch zinc consistency was maintained within ±10% across 12 consecutive production lots.
our service
Factory-Direct Manufacturing
As a vertically integrated manufacturer with our own standard production facility in China, we control every step from raw seed procurement to final milling. This eliminates middleman markup, ensures batch-to-batch consistency, and allows us to offer competitive bulk pricing for full-container orders. Our annual production capacity for pumpkin seed protein exceeds 500 metric tons, with scalable expansion available for large-volume contracts.
Custom Specification Development
We understand that one specification does not fit all applications. Our R&D team can work with your formulation requirements to develop custom grades, including:
- Custom protein concentrations (10–60% range)
- Targeted particle size distributions (80–200 mesh)
- pH-adjusted grades for specific beverage systems
- Organic-certified production runs (USDA NOP / EU Organic)
- Custom blending with other plant proteins (pea, rice, sunflower, hemp) at your specified ratios
Technical Support & Formulation Assistance
Our in-house food technologists provide end-to-end technical support:
- Sample evaluation and application testing in our on-site lab
- Amino acid score analysis and PDCAAS calculation for your blends
- Dispersion and stability testing for beverage formulations
- Texture profile analysis (TPA) for solid food applications
- Regulatory guidance for nutrition claims (EU 1924/2006, FDA 21 CFR)
- Dedicated technical account manager for ongoing formulation optimization
FAQ
Q: Is pumpkin seed protein a complete protein?
Yes. Pumpkin seed protein contains all nine essential amino acids (histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine). While lysine is the limiting amino acid (present at lower levels than in animal proteins), the overall profile qualifies it as a complete protein. For applications requiring a PDCAAS comparable to dairy or egg, we recommend blending with pea protein isolate at a 25:75 (pumpkin:pea) ratio, which we can pre-blend to your specification.
Q: How do you control heavy metals and PAHs in your product?
Heavy metal control begins at the source — we contract with farms in regions with low industrial soil contamination and test every incoming raw seed lot. Finished product is tested by ICP-MS, with internal limits stricter than most regulatory requirements (Pb ≤ 0.5 mg/kg vs. the general 1.0 mg/kg reference). For PAHs, which can form during improper seed drying or roasting, we use indirect low-temperature drying (below 60°C) and test every batch by GC-MS to ensure sum of 4 PAHs ≤ 10 ppb, fully compliant with EU Regulation 835/2011.
Q: Is your pumpkin seed protein allergen-free?
Yes. Pumpkin seeds are not classified as a major allergen under the FDA Big 9 or EU Regulation 1169/2011 Annex II. Our product is naturally free from gluten, dairy, soy, peanuts, tree nuts, fish, shellfish, and sesame. It is produced in a dedicated facility with documented allergen control and sanitation procedures. We provide an allergen cross-contamination statement with every commercial order.
Q: What is the shelf life and recommended storage?
Shelf life is 24 months from the date of manufacture when stored in original, unopened packaging at ≤ 25°C with relative humidity below 60%, away from direct sunlight. The residual fat fraction (10–12%) contains unsaturated fatty acids that are susceptible to oxidation, so we recommend nitrogen-flushed packaging for long-term storage in warm or humid climates. Once opened, transfer to an airtight container and use within 60 days.
Q: Can you provide organic-certified pumpkin seed protein?
Yes. We offer USDA NOP and EU Organic certified grades produced from organically cultivated pumpkin seeds. Organic certification requires a dedicated production run and is subject to minimum order quantities (typically 500 kg). Please contact us for current organic availability and lead times.
Q: Do you offer private label or finished product manufacturing?
While our core business is bulk ingredient supply, we do offer OEM/ODM services for select finished product formats, including protein powder sachets, capsules, tablets, and custom blend powders. Minimum order quantities and lead times vary by format. Please share your product concept and target market, and our team will provide a feasibility assessment and quotation.
Q: What documentation do you provide with commercial orders?
Every commercial shipment includes: Certificate of Analysis (COA), Technical Data Sheet (TDS), Safety Data Sheet (SDS), allergen cross-contamination statement, heavy metal test report, and pesticide residue report. Additional documents — including Kosher, Halal, ISO, organic certificates, and non-GMO statements — are available on request. We can also provide custom documentation formats to match your company's supplier qualification requirements.
Q: Can I request a sample before placing a commercial order?
Absolutely. We provide 10g–50g samples free of charge for R&D and formulation evaluation (customer covers courier shipping, typically USD 60-100 via DHL/FedEx). Most samples are dispatched within 3–5 working days.
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