White Kidney Bean Extract
White Kidney Bean Extract is a protein-enriched concentrate prepared from the seeds of Phaseolus vulgaris. The active fraction is phaseolamin, a naturally occurring inhibitor of pancreatic alpha-amylase.
By slowing the breakdown of dietary starch into absorbable sugars, the ingredient is marketed as a starch blocker and a tool for carbohydrate-conscious weight-management formulas.
We source bulk White Kidney Bean Extract from top China manufacturers for our partners, working with several of them. The manufacturers are in Shaanxi, Shandong and Jiangsu. 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 fibre drum with double PE liner
- ISO 9001
- HACCP
- Halal
- Kosher
Specifications
Grades / Types Available: Food Grade
| Item | Specification |
|---|---|
| Appearance | Off-white to light yellow fine powder |
| Alpha-Amylase Inhibitor Units | ≥3,000 U/g |
| Phaseolamin | 1–5% |
| Moisture | ≤5.0% |
| Ash | ≤5.0% |
| Protein | ≥20% |
| Extraction Solvent | Water |
| Particle Size (80 mesh) | ≥95% |
| Heavy Metals (as Pb) | ≤2 mg/kg |
| Pesticide Residues | Complies |
| Total Plate Count | ≤10,000 cfu/g |
| Salmonella | Absent in 25g |
| Purity (Phaseolin) | 2% |
| Moisture/Loss on Drying | ≤5.0% |
| Particle Size/Mesh | 100% pass 80 mesh |
| Lead (Pb) | ≤3mg/kg |
| Arsenic (As) | ≤1mg/kg |
| Mercury (Hg) | ≤0.1mg/kg |
| Cadmium (Cd) | ≤1mg/kg |
Common Markets Grades
The commercial grading system is built around alpha-amylase inhibitor units (AAIU) per milligram, which is the only meaningful measure of in-use activity.
Mainstream supplement grades carry 3,000, 5,000, and 10,000 AAIU per gram. The 5,000 AAIU grade is the standard grade for capsule and tablet formulas, while 10,000 AAIU material is reserved for higher-priced or low-dose stickpack lines.
Protein-content grades, expressed as percent crude protein, sit at 50, 70, and 80 percent. These specifications are often paired with the activity spec on the certificate of analysis.
The standard format is a fine off-white to cream-coloured powder with a mild bean note. Spray-dried versions with maltodextrin carriers are produced for stickpack and ready-to-mix beverage use.
Tableting grades are agglomerated or granulated for direct compression. Capsule-fill grades are milled to a fine, free-flowing particle size with good machine flow.
Applications
- Starch-blocker capsules and tablets taken before high-carbohydrate meals
- Weight-management formulas stacked with garcinia, green tea, or chromium
- Carb-control meal-replacement shakes and powders
- Diabetic-friendly functional beverages and stickpacks
- Pre-meal effervescent tablets in the European weight-management category
- Sports-nutrition recomposition products for cutting and lean-phase use
- Glycemic-management supplements for low-carb and ketogenic communities
- Bariatric-support formulas alongside fibre and protein
- Functional pasta, bread, and bakery products with reduced glycemic load positioning
- Veterinary weight-control formulas for overweight pets
- Combination products with chitosan and conjugated linoleic acid
Brands Using White Kidney Bean Extract
Widely-distributed consumer products that list White Kidney Bean Extract on the ingredient label.
- NOW FoodsPhase 2 White Kidney Bean Extract 500 mg Veg Capsules ↗NOW Foods sells a Phase 2 branded white kidney bean (Phaseolus vulgaris) extract capsule standardised for alpha-amylase inhibitor activity as a starch/carb blocker.Label verified 2026-05-24
- NatrolCarb Intercept with Phase 2 White Kidney Bean Extract ↗Natrol's Carb Intercept line is built around Phase 2 White Kidney Bean Extract (Phaseolus vulgaris) clinically positioned to delay starch digestion.Label verified 2026-05-24
- FuturebioticsWhite Kidney Bean Extract 1000 mg ↗A 1000 mg Phaseolus vulgaris white kidney bean extract supplement.Label verified 2026-05-24
Brand names, product names and logos are the property of their owners. They appear here as published evidence that the ingredient is used, taken from the brand's own label or website. Their appearance is not an endorsement, and it does not mean the brand buys from us or from any manufacturer listed on this site.
China Manufacturers of White Kidney Bean Extract
Top White Kidney Bean Extract manufacturers in China.
Bak Bio-tech Co., Ltd.3 ingredients in the directory- Shandong Mingze Biotechnology Co., Ltd.8 ingredients in the directory
Suzhou Longhelp Nutrition Technology Co., Ltd.2 ingredients in the directory
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 White Kidney Bean Extract
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 White Kidney Bean Extract 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 White Kidney Bean Extract together with other ingredients such as Astaxanthin, Dehydrated Garlic and Lutein into one 20' FCL. If your quantity is small, we can also ship LCL.
Regulatory Status
White kidney bean has a long history of dietary consumption worldwide. Cooked beans are a staple food, and the extract has been used as a supplement ingredient since the 1980s.
In the United States the extract is sold as a dietary-supplement ingredient under DSHEA. Several commercial preparations carry self-affirmed GRAS status for use in functional foods and beverages.
In the European Union the extract is treated as a food-supplement ingredient at the member-state level, and EFSA has approved no harmonised health claims.
In Japan a Phase 2 alpha-amylase inhibitor preparation has cleared the Foods with Function Claims notification system for post-meal blood-sugar support.
Raw or undercooked beans contain phytohemagglutinin, a lectin that is toxic when consumed in bulk. Commercial extracts are processed to remove or inactivate this lectin and carry test results to confirm it.
Manufacturing Process
White kidney beans are sourced from cultivated Phaseolus vulgaris, with production concentrated in the United States, Canada, China, and parts of Latin America.
Beans are cleaned, dehulled, and milled into a flour. Aqueous extraction at controlled pH solubilises the protein fraction containing phaseolamin while leaving most starch behind as a sediment.
The protein-rich liquor is clarified by centrifugation, then concentrated through ultrafiltration to remove low-molecular-weight peptides and salts. This step is critical: phaseolamin is damaged by heat and by pH shifts, so processing temperatures are kept below 50 degrees C and pH is held in a narrow window.
The concentrate is spray-dried with minimal inlet temperature to preserve enzyme-inhibition activity. The highest-activity grades skip the spray-drying step entirely in favor of low-temperature drying.
Quality control measures phaseolamin activity by an enzymatic assay that quantifies the inhibition of porcine pancreatic alpha-amylase against a defined starch substrate. The result is reported in AAIU per gram.
