Wholesome in bulk™ Pumpkin Seed Protein Powder
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Bulk Pumpkin Seed Protein Powder for Supplement Manufacturing
Pumpkin seed protein powder is a fine powder made from pumpkin seeds that are partially defatted and then milled and sieved. Common grades run from 60% to 70% protein on a dry basis, measured by Kjeldahl. We supply it in bulk to supplement brands, contract manufacturers, and formulators. You can request testing documents and samples on the quote form.
A single ingredient seed protein with simple specs
Pumpkin seed protein is one ingredient with no carrier, made by removing part of the seed oil and milling the rest. Pin down the species, the protein basis, and the contaminant limits, and lot to lot comparison is simple.
Four forms from one seed
Whole seed powder is ground seed at about 30% to 40% protein. Protein powder is partially defatted seed at 60% to 70% protein. Pumpkin seed oil and pumpkin seed extracts are separate ingredients with their own specs.
Two common species
Bulk material comes from Cucurbita pepo, including the hulless Styrian type, or from Cucurbita moschata. The species often follows the origin, so ask for both.
Protein on a dry basis
Specs state protein as a minimum on a dry basis, measured by Kjeldahl. Ask which nitrogen factor the lab used, so you can compare offers on equal terms.
Fine green powder
Spec sheets describe a fine green powder, with at least 95% passing an 80 mesh screen. Bulk density runs about 0.30 to 0.70 g/mL.
Mild, nutty taste
The taste is mild and nutty. The powder has low solubility in water, so it disperses into shakes rather than dissolving.
Some oil remains
Partially defatted powder still carries up to about 15% fat. Because of that residual oil, store this ingredient cool and sealed.
Where formulators use pumpkin seed protein
This powder fits formats where protein per serving and texture are planned, including:
- Protein powders
- Plant based protein blends
- Sports nutrition powders
- Powdered drink mixes, after mouthfeel trials
- Nutrition bars
- Baked goods and snacks
- Single ingredient powders
- Private label programs
Pumpkin seed protein gives drinks a green color and a nutty taste, and it can settle in water. Many brands blend it with other plant proteins. Base your protein per serving on the confirmed assay on each COA.
What to check before you buy pumpkin seed protein
Two powders sold as pumpkin seed protein can differ in species, protein basis, and contaminant results. Review these points together, and ask for lot documents before you approve a supplier.
Species and origin
Confirm the species, Cucurbita pepo or Cucurbita moschata, and the country where the seed was grown. Write both on your specification so lots stay consistent.
Protein grade and basis
Ask for protein on a dry basis by Kjeldahl or Dumas, and the nitrogen factor used. Also get fat, ash, and moisture, since they make up most of the rest.
Measured heavy metals
Ask for measured lead, cadmium, arsenic, and mercury by ICP-MS, as well as the limits. Protein powders are used in large servings, so small ppm figures add up.
Pesticide residues
Pumpkin plants can take up older organochlorine residues, such as dieldrin, from farm soil. Ask for a multiresidue panel that includes organochlorines.
Freshness of the oil
Residual oil can turn rancid in warm storage. Ask for the production date, the shelf life, and an oxidation check such as peroxide value.
Allergen statement
Pumpkin seed is not one of the nine major US food allergens. Seed plants often handle sesame and other seeds, so ask for a written cross contact statement.
Label math: Protein powders are used at 20 to 30 g per serving, so small ppm figures add up. At a 30 g serving, each 0.1 ppm of lead equals 3 micrograms per serving. Use measured lot results and your own finished product testing to set your limit.
Typical specification for pumpkin seed protein powder
These values reflect the common 60% protein grade. Final figures come from the specification sheet and COA for your lot. NLT means not less than, and NMT means not more than.
| Parameter | Specification | Method |
|---|---|---|
| Source | Cucurbita pepo L. or Cucurbita moschata Duchesne, seed | Supplier declaration |
| Appearance | Fine green powder | Visual |
| Odor and taste | Mild, nutty, no off odors | Organoleptic |
| Protein, dry basis | NLT 60%, nitrogen factor stated on the COA | Kjeldahl or Dumas combustion |
| Fat | NMT 15% | AOAC |
| Ash | NMT 15.0% | USP <561> |
| Moisture | NMT 10.0% | USP <921> |
| Particle size | NLT 95% through 80 mesh | USP <786> |
| Bulk density | 0.30 to 0.70 g/mL | USP <616> |
| Lead | NMT 0.5 ppm, with measured value | ICP-MS |
| Cadmium | NMT 0.5 ppm, with measured value | ICP-MS |
| Arsenic | NMT 0.5 ppm | ICP-MS |
| Mercury | NMT 0.1 ppm | ICP-MS |
| Pesticide residues | Meets USDA NOP or USP <561>, organochlorines reported | AOAC 2007.01 and GC-MS |
| Total aerobic count | NMT 100,000 cfu/g | USP <2021> |
| Yeast and mold | NMT 10,000 cfu/g | USP <2021> |
| E. coli and Salmonella | Negative in 10 g and 25 g | USP <2022> |
| Shelf life | 12 to 36 months, unopened | Stability data |
Storage and handling for bulk pumpkin seed protein
Seed proteins still carry some oil, so cool, dry, sealed storage keeps the taste and color steady. These steps keep the powder in good condition between production runs.
Keep it sealed
Close the inner liner after each use and press out the air. Air and moisture both shorten the time before the oil turns stale.
Store cool
Keep bags off the floor in a cool, dry room. Some suppliers specify storage below 15 °C (59 °F), so follow the range on your spec sheet.
Keep away from light
Leave the powder in its original opaque packaging. Light speeds up changes in color and taste.
Rotate stock
Record the lot number and retest date for each bag. Send older lots to production first, and taste a retained sample before each run.
Pumpkin seed protein buyer FAQ
Quick answers to the questions procurement and quality teams ask most.
What is the difference between pumpkin seed protein, seed powder, oil, and extract?
Pumpkin seed protein is partially defatted seed at about 60% to 70% protein. Seed powder is whole ground seed at about 30% to 40% protein. Oil is pressed from the seed, and extracts are concentrated with solvents. This page covers the protein powder.
How much protein is in pumpkin seed protein powder?
Common grades are NLT 60% or 70% protein on a dry basis, measured by Kjeldahl.
Is pumpkin seed protein water soluble?
No. Pumpkin seed protein has low solubility in water, so it disperses rather than dissolves. Run mouthfeel and settling trials for shakes and drink mixes.
Which pumpkin species is used?
Bulk pumpkin seed protein comes from Cucurbita pepo, including the hulless Styrian type, or from Cucurbita moschata. The country of origin for each lot is provided with your quote.
Is pumpkin seed a major allergen?
No. Pumpkin seed is not one of the nine major food allergens under US law. Ask for a cross contact statement, because seed plants often handle sesame.
What documents can I get with an order?
A certificate of analysis (COA) and a specification sheet ship with every order. An allergen statement and a safety data sheet may also be available, depending on the lot in inventory. Contact us to request them.
Can I get a sample before a bulk order?
You can request one by choosing sample options on the quote form. We will confirm availability, size, and timing.
How should I store an opened bag?
Close the liner, press out the air, and keep the bag in a cool, dry place away from light. Use the powder within the shelf life shown on the COA.
Request a quote for bulk pumpkin seed protein powder
Tell us your protein grade, quantity, and timing. We will reply with current pricing. Select testing documents and sample options on the quote form.
Order Pumpkin Seed ProteinBulk orders: Choose a pack size above, or use the quote form for larger volumes, testing documents, and sample options. We serve supplement brands, contract manufacturers, product developers, and formulators.
This bulk ingredient is sold for further manufacturing and formulation. The information on this page describes the ingredient and how commercial buyers evaluate it. It is not medical advice. Each finished product brand is responsible for its own labeling and product claims.
