Defatted Soy Flake
Defatted Soy Flake is the solid residue left after hexane extraction of oil from cracked, dehulled, and conditioned soybeans. It is the master raw material from which essentially all higher-value soy protein ingredients are derived.
The flake retains roughly half of the protein and nearly all of the carbohydrate and ash from the parent soybean, while the oil content is reduced from about 20 percent to less than 1 percent.
We source bulk Defatted Soy Flake from top China manufacturers for our partners. The manufacturer is in Shandong. A smaller requirement can ship in a combined container with other ingredients.
Please send the grade you need, the volume and your destination port, and we will come back with a solution and a price.
or call +86-21-6858 0751
- Packaging
- 25 kg kraft paper bag with PE inner liner
- ISO 9001
- HACCP
- Halal
- Kosher
Specifications
| Item | Specification |
|---|---|
| Appearance | Light yellow flakes |
| Protein (dry basis, N×6.25) | ≥48% |
| Fat (residual) | ≤1.0% |
| Moisture | ≤12% |
| Crude Fibre | ≤3.5% |
| Ash | ≤7.0% |
| PDI | 70–90 (food grade) / 20–40 (feed) |
| Urease Activity | ≤0.3 mg N/g·min |
| Residual Solvent | ≤500 ppm |
| Heavy Metals (as Pb) | ≤2 mg/kg |
| Total Plate Count | ≤30,000 cfu/g |
| Salmonella | Absent in 25g |
Common Markets Grades
Defatted Soy Flake is graded primarily by protein dispersibility index (PDI) and by intended downstream use.
High-PDI white flake (PDI 70 to 90) is minimally heat-treated and preserves protein solubility and enzyme activity. This is the starting material for soy protein isolate, soy protein concentrate, and enzyme-based hydrolysates.
Medium-PDI flake (PDI 40 to 70) is partially toasted and feeds into soy flour and grits production for bakery and food processing.
Low-PDI flake (PDI 10 to 30) is fully toasted to inactivate trypsin inhibitors and is used for animal feed, soy sauce brewing, and fermented food production.
Hexane-free flake produced by aqueous or alcohol extraction is produced for clean-label and organic markets at premium pricing.
Applications
- Raw material for soy protein isolate production
- Raw material for soy protein concentrate production
- Substrate for textured soy protein and textured soy protein concentrate extrusion
- Soy flour and grits for bakery, snack, and meat-extender applications
- Substrate for soy sauce, miso, and tempeh fermentation
- Soy lecithin and soy fibre co-product streams
- High-protein animal feed for swine, poultry, and aquaculture
- Pet food protein source in both dry and wet formats
- Substrate for enzyme-based soy peptide manufacture
- Industrial uses including adhesives, foams, and biodegradable plastics
- Mushroom cultivation substrate as a nitrogen source
- Bioethanol fermentation feedstock in certain integrated plants
China Manufacturers of Defatted Soy Flake
Top Defatted Soy Flake manufacturers in China.
Company names and logos are the property of the manufacturers themselves. They are listed here because our own directory records them as producing this ingredient. A listing is not an endorsement by them, and we do not represent them or speak on their behalf.
How We Help Source Defatted Soy Flake
Direct Factory Sourcing
We run the whole process: selecting the manufacturer from the top Chinese food ingredient producers, negotiating the price, verifying quality, and coordinating the logistics. You deal with us instead of with several factories at once.
Original Packaging and Documents from the Manufacturer
The manufacturer sends your Defatted Soy Flake out of its own factory in the original packing, through to your destination port. The COA, COO, MSDS, TDS and any certifications reach you from the manufacturer as well.
Free Samples and Lead Time
We send 100 to 500 g free for your own laboratory to test and you cover only the courier, usually within 2 to 3 working days. ETD is usually within 7 to 15 days once the order is confirmed, and we check that date against the factory's own manufacturing schedule before we give it to you.
Combined Shipment
We can load Defatted Soy Flake together with other ingredients such as Collagen Peptide, Soy Protein Isolate and Fish Collagen Peptide into one 20' FCL. If your quantity is small, we can also ship LCL.
Regulatory Status
Defatted Soy Flake is regulated as a food ingredient and animal feed material in most jurisdictions.
In the United States it is recognised under 21 CFR for food use, with residual hexane limits enforced under FDA guidance for processing aids. Feed-grade flake falls under AAFCO definitions.
The European Union covers hexane as an approved extraction solvent under Directive 2009/32/EC, with residual solvent limits set in the same instrument. Soy is a labelled allergen under Regulation (EU) 1169/2011.
Codex Alimentarius standard CXS 175-1989 covers soy protein products derived from soy flake.
Most commercial defatted soy flake is from conventional soybeans. Identity-preserved non-GMO and Organic streams exist at higher cost. Kosher and Halal certifications are widely available.
Manufacturing Process
Production starts with clean, dry soybeans at roughly 10 percent moisture. The beans are cracked into four to six pieces, the hulls are aspirated off, and the meats are conditioned with steam to about 11 percent moisture at 65 degrees Celsius.
The conditioned meats are passed through a pair of large smooth rolls and flattened into thin flakes of 0.25 to 0.35 mm. The flake form maximises surface area for solvent contact.
The flakes enter a countercurrent extractor where food-grade hexane dissolves the soybean oil. The miscella (oil in hexane) is drained off for downstream desolventizing and refining.
The defatted flakes leaving the extractor still carry roughly 30 percent hexane. They pass through a desolventizer-toaster (DT) where steam strips out the residual solvent. The DT residence time and temperature also determine the final PDI of the flake.
For high-PDI flake, a flash desolventizer system (FDS) is used instead. The FDS removes hexane at lower temperatures and preserves native protein structure.
