White Kidney Bean Extract Powder

Our premium White Kidney Bean Extract Powder is a potent, natural ingredient derived from carefully selected Phaseolus vulgaris beans, primarily sourced from the pristine highlands of Yunnan, China. Renowned for its high concentration of alpha-amylase inhibitors, our extract effectively blocks the digestion and absorption of dietary starches, aiding in weight management and supporting healthy blood sugar levels. 

Cultivated using sustainable, pesticide-free practices and extracted via a purely physical process to preserve its full bioactivity, our extract boasts industry-leading levels of active compounds. Backed by rigorous scientific research, including human clinical trials demonstrating significant weight and body fat reduction, our product offers a safe and effective solution for various applications in the food, beverage, and dietary supplement industries. We adhere to stringent GMP and ISO quality standards, ensuring a reliable and high-quality ingredient for your formulations.

Alpha-Amylase Inhibitor (α-Amylase Inhibitor): This is the most crucial bioactive compound in White Kidney Bean Extract. It effectively inhibits the activity of alpha-amylase enzymes present in human saliva and the pancreas, thereby reducing the breakdown and absorption of dietary starch in the digestive tract. This inhibitory action helps to lower postprandial (after-meal) blood glucose levels and decrease caloric intake, consequently aiding in weight management and supporting healthy blood sugar levels.

Phaseolin: This represents a significant storage protein, constituting over 50% of the total protein content in white kidney bean seeds. 

Other Components: It also contains other beneficial compounds such as plant proteins, dietary fiber, saponins, and flavonoids. These components exhibit various functions, including antioxidant properties and the promotion of gut health.

Alpha-Amylase Inhibitor Activity (Units):

• Standard Grade: 1,000 - 5,000 AU/g (Amylase Units per gram)
• High Potency Grade: 8,000 - 15,000 AU/g (with a specified inhibition rate, e.g., ≥95%)
• Phaseolin Content: 1% - 8%
• Extraction Ratio: 10:1, 20:1 (e.g., 10:1 indicates that 10 kilograms of raw material are concentrated into 1 kilogram of extract)
• Appearance: Typically presents as a white to light yellow powder.

1. Raw Material Pre-treatment:

• Raw Material Selection: High-quality white kidney beans (Phaseolus vulgaris) are selected, ensuring high maturity and absence of damage.
• Cleaning: The surface of the white kidney beans is cleaned to remove impurities, dust, and foreign matter.
• Crushing or Milling: The white kidney beans are crushed or milled to increase the surface area, facilitating subsequent extraction.

2. Extraction:

• Water Extraction: The milled white kidney bean powder is mixed with water at a specific ratio and soaked at a controlled temperature to dissolve the active components.
• Alcohol Extraction: Organic solvents such as ethanol are used for extraction to potentially enhance extraction efficiency. (Used selectively based on specific product requirements)
• Enzymatic Hydrolysis: Specific enzymes (such as beta-amylase) are added to the white kidney beans for enzymatic hydrolysis, which aids in the release of active compounds.

3. Purification:

• Filtration: Solid impurities are removed from the extracted liquid through filtration.
• Centrifugation: Centrifugal separation is employed for further removal of impurities.
• Chromatographic Separation: Techniques such as ion exchange chromatography and gel chromatography are used to separate and purify the alpha-amylase inhibitors.

4. Concentration and Drying:

• Evaporation Concentration: The extracted liquid is concentrated using methods such as vacuum evaporation.
• Spray Drying or Freeze Drying: The concentrated liquid is dried into a powder form for ease of storage and use.

5. Quality Control and Packaging:

• Testing: The extract undergoes rigorous testing for enzyme activity, purity, heavy metals, pesticide residues, and other relevant quality parameters.
• Packaging: The qualified extract is packaged to ensure its stability and safety.

6. Other Improved Processes:

• Microwave-Assisted Compound Enzymatic Extraction: This method combines microwave pre-treatment with compound enzyme processing to enhance extraction efficiency and active component yield.
• Dry De-skinning: The white kidney beans undergo a dry de-skinning process before extraction to reduce impurities.

Our premium White Kidney Bean Extract owes its magic to a key active ingredient: the alpha-amylase inhibitor, including the well-known Phaseolamin. Think of this natural botanical extract as your body's very own "Carb-Blocking Maestro!" It cleverly puts the brakes on alpha-amylase, an enzyme in your saliva and pancreas that's eager to break down starches. By taming this enzyme, our extract significantly reduces the initial breakdown and subsequent absorption of those pesky carbs.

Picture this:

when you indulge in delicious rice, noodles, or bread (all packed with starch!), your body diligently releases alpha-amylase – like tiny "sugar-seeking scissors" ready to snip those complex starch molecules into smaller glucose units for absorption and energy. Now, our White Kidney Bean Extract steps in as a "natural carb interceptor." Its active compounds temporarily "buddy up" with these enzymatic scissors, effectively dulling their blades. The result? A portion of the starch you've eaten gracefully bypasses the breakdown process and exits your system, leading to a noticeable decrease in the energy your body actually absorbs. It's like having a polite but firm bouncer for those extra carbs!

Alpha-amylase inhibitors primarily exert their effects through the following mechanisms:

1. Inhibition of Enzyme Activity: Alpha-amylase inhibitors bind with high affinity to the alpha-amylase enzymes present in human saliva and the pancreas. This binding obstructs the enzyme's active site, preventing it from interacting with starch molecules and thus inhibiting the catalytic activity of alpha-amylase. This inhibition prevents the breakdown of starch into absorbable sugars, reducing carbohydrate digestion and absorption.

2. Reduction of Starch Breakdown: Under normal physiological conditions, alpha-amylase hydrolyzes starch into maltose and glucose, which are subsequently absorbed by the body and utilized for energy or stored as fat. By blocking this enzymatic process, alpha-amylase inhibitors decrease the breakdown of starch, allowing a portion of the ingested starch to pass through the digestive tract undigested and be excreted.

3. Lowering Postprandial Blood Glucose Levels: As the enzymatic breakdown of starch is reduced, the rate and magnitude of the post-meal (postprandial) blood glucose spike are significantly diminished. This is particularly beneficial for individuals with diabetes or those seeking to manage their blood sugar levels, as it helps to mitigate glycemic fluctuations.

4. Decreasing Caloric Intake: The undigested starch cannot be absorbed and utilized by the body for energy, leading to a reduction in overall caloric intake. This contributes positively to weight management and the prevention of obesity.

5. Competitive or Mixed Inhibition: The mechanism of action of alpha-amylase inhibitors, including prominent compounds like phaseolamin found in Common Bean Extract, is often characterized as competitive or mixed inhibition. Competitive inhibitors bind to the enzyme's active site, directly competing with the starch substrate. Mixed inhibitors can bind to both the active site and an allosteric site (a site distinct from the active site), affecting both substrate binding and catalytic activity.

6. Support for Gut Health: Beyond inhibiting alpha-amylase activity, other components present in white kidney beans, such as dietary fiber, can contribute to gut health by promoting intestinal motility and increasing fecal bulk.

In summary, alpha-amylase inhibitors effectively reduce the digestion and absorption of dietary starch by binding to and inhibiting the activity of alpha-amylase enzymes. This action leads to lower postprandial blood glucose levels and reduced caloric intake, ultimately supporting blood sugar management and weight control.

Harnessing Nature's Potency: Sourced from Pristine Yunnan Highlands

Did you know that exceptional products originate from superior raw materials? Our premium White Kidney Bean Extract is derived from meticulously selected Phaseolus vulgaris beans, cultivated in the unique and geographically advantageous region of Yunnan, China – a land renowned for its biodiversity and pristine environment.

The Power of Origin: Unveiling the Superiority of Yunnan-Grown White Kidney Beans

• Unique Highland Terroir: Our white kidney beans thrive in the high-altitude regions of Yunnan, particularly around Dali and Lijiang, at elevations exceeding 1800 meters (approximately 5900 feet). This elevated environment boasts abundant sunshine, intense ultraviolet (UV) radiation, and significant diurnal temperature variations. These natural conditions act as a natural "refinery," resulting in beans with remarkably plump kernels and a naturally higher concentration of vital nutrients, including proteins.
• Purity from the Source: Sustainable and Pesticide-Free Cultivation: At JIUYUAN BIOTECH, we understand that food safety is paramount. Therefore, we are committed to sourcing only the finest white kidney beans from these pristine highland areas. Our cultivation practices strictly adhere to the agricultural scientific achievements and guidelines of the Yunnan Academy of Agricultural Sciences' Institute of Food Crops. We employ sustainable and environmentally friendly farming methods, ensuring a cultivation process entirely free from synthetic pesticides and chemical fertilizers. This meticulous approach from seed to harvest guarantees the inherent purity and safety of every single bean.

Leveraging Technology For Superior Seed Stock

We recognize that a strong foundation is crucial for success. To achieve the highest quality White Kidney Bean Extract, we collaborate closely with leading scientific research institutions:

• Global Selection and Targeted Breeding: JIUYUAN BIOTECHNOLOGY, in partnership with the Yunnan Academy of Agricultural Sciences and numerous domestic and international agricultural research organizations, conducts a global search and employs targeted breeding programs. This collaborative effort has yielded several novel varieties exhibiting exceptional performance in terms of active compound content, bioactivity, disease resistance, and yield.
• Patented Technology and Sustainable Practices: We utilize proprietary cultivation techniques and adhere to sustainable, environmentally friendly farming protocols. This ensures that the white kidney beans cultivated in our designated growing regions possess superior quality attributes.
• Industry-Leading Active Compound Levels: Currently, the white kidney beans used in our production are the result of a collaborative breeding and enhancement program with the Yunnan Academy of Agricultural Sciences, focused on developing high α-AI (alpha-amylase inhibitor) varieties. These beans have achieved industry-leading levels across multiple key indicators, signifying that our extract boasts exceptional carbohydrate-blocking potency.

The Precision Of Extraction: Preserving Full Bioactivity

Beyond premium raw materials and superior seed stock, we are committed to excellence in our extraction processes:

• In-depth Research and Authoritative Validation: To drive innovation within the White Kidney Bean Extract industry, JIUYUAN BIOTECHNOLOGY and its partners have undertaken comprehensive research and validation initiatives, completing extensive product testing and clinical trials.
• China's First Comprehensive Database: We proudly established China's first complete database dedicated to Kidney Bean Extract. This reflects our technical expertise and underscores our commitment to product quality.
• Core Technology and Clinical Validation: We have accumulated over 40 core technological achievements, and multiple human clinical trials exploring new applications are currently underway. This indicates the broad potential and reliable efficacy of our product.
• Pure Physical Extraction for Intact Bioactivity: During the extraction process, we employ advanced techniques to fully preserve the spatial structure of the α-AI in the Kidney Bean Extract, which is critical for its bioactivity. Importantly, our extraction process is conducted without the addition of any chemical auxiliaries, ensuring the product's purity, quality, and safety, providing you with complete confidence in its use.

Strategic Alliances: Building A Scientific Pinnacle

We firmly believe that science and technology are the primary drivers of progress. Therefore, JIUYUAN BIOTECH actively establishes strategic partnerships with leading domestic and international scientific research institutions:

• Premier Domestic and International Research Partners: Our collaborative network includes prestigious domestic organizations such as the Chinese Academy of Agricultural Sciences, China Agricultural University, COFCO Nutrition and Health Research Institute,  and the Yunnan Academy of Agricultural Sciences. Internationally, we partner with renowned universities including the University of California (various campuses), Newcastle University (UK), and the University of Melbourne (Australia).
• Continuous Innovation and Application Expansion: Through these collaborations with top-tier research institutions, we are able to continuously optimize our Phaseolus Vulgaris Extract production processes, enhance product quality, and proactively explore a wider range of novel applications, bringing more possibilities to your healthy lifestyle.

Authoritative Validation: Demonstrable Safety And Efficacy

We understand that claims must be substantiated by evidence. Therefore, the safety and efficacy of our  Kidney Bean Extract have undergone a series of rigorous experimental validations. These studies were specifically designed to consider the dietary habits and lifestyles of the Chinese population, ensuring the scientific validity and practical relevance of the results.

Multi-Dimensional Experimental Validation System:

• Toxicological Studies: We first conducted comprehensive toxicological studies. The results unequivocally demonstrate that our Kidney Bean Extract exhibits no toxicity to the human body within reasonable usage levels, providing a solid guarantee for safe consumption.
• Animal Studies: Further animal studies were performed to validate the bioactivity and potential health benefits at a biological level, laying the theoretical groundwork for human trials.
• Human Clinical Efficacy Studies: Crucially, we conducted human clinical efficacy studies specifically targeting the Chinese population. These trials directly demonstrate the remarkable effectiveness of our product in real-world applications.

Rigorous Details of Human Clinical Research:

Scientifically Sound Study Design: Our clinical trials underwent stringent ethical review and adhered to strict scientific and ethical guidelines, ensuring the complete protection of the health and rights of every participant.

Precise Targeting of the Chinese Population: We specifically considered the dietary habits and nutritional structures prevalent in the Chinese population when recruiting eligible volunteers for our studies. This ensures that our experimental results are highly relevant and applicable to your target market.

"No Lifestyle Change Required" Study Conditions:

• Most notably, our trials were conducted without restricting participants' diets or increasing their exercise levels! This compellingly demonstrates that our White Kidney Bean Extract can exert its unique benefits even when maintaining existing lifestyle habits.
• Significant Efficacy Demonstrated: Throughout the 35-day clinical study, we achieved encouraging and statistically significant results:
• Significant Weight Reduction: Participants experienced an average weight loss of 2.24 kilograms (approximately 4.94 pounds). This is not just a marginal change, but a noticeable difference.
• Targeted Fat Mass Reduction: Remarkably, 1.95 kilograms (approximately 4.30 pounds) of the lost weight was pure body fat! This powerfully confirms that our Kidney Bean Extract primarily targets the reduction of body fat, rather than water or muscle mass, facilitating healthier weight loss.
• Effective Reduction in Body Fat Percentage: Participants exhibited an average reduction in body fat percentage of 1.53%, further substantiating the product's targeted action on adipose tissue and its ability to help achieve a more desirable physique.

Superior Quality And Authoritative Certifications: Your Assurance Of Excellence

We deeply understand that product quality is the lifeline of our business and a critical factor in your decision to choose us. Therefore, we consistently prioritize product quality and have obtained multiple authoritative certifications:

Stringent Production Standards and Quality Control: Our White Kidney Bean Extract is meticulously manufactured in facilities certified under GMP (Good Manufacturing Practice) standards for pharmaceuticals. This signifies that our production environment, processes, equipment, and facilities meet internationally recognized high standards, ensuring the utmost product safety. Furthermore, we have implemented a rigorous ISO quality management system, applying strict monitoring and control measures at every stage, from raw material procurement to the final product, guaranteeing the safety and efficacy of every batch you receive.

Transparent Quality through Independent Third-Party Testing:

• For your complete peace of mind, we provide comprehensive testing reports from reputable third-party institutions. These independent laboratories conduct thorough analyses of our product, including the content of active ingredients, purity, heavy metal residues, and microbiological indicators, among other critical parameters. The resulting data is accurate, reliable, and transparently presented, providing irrefutable evidence of our product's superior quality and safety. By reviewing our testing reports, you can gain a clear understanding of our product specifications, enabling you to make informed decisions.
• Strong Reputation and Trustworthy Brand: Our company possesses extensive industry experience in the health and wellness sector, accumulating profound professional knowledge and technical expertise. We boast a highly capable research and development team dedicated to continuous innovation and committed to providing you with high-quality, safe, and effective health ingredients. We consistently adhere to a steadfast pursuit of quality and a sincere commitment to customer service, striving to earn your trust and support. Choosing our product means choosing peace of mind and guaranteed quality.

Broad Market Prospects & Diverse Applications

Over more than a decade of robust growth, White Kidney Bean Extract, with its exceptional natural, safe, and effective properties, has become a preferred premium ingredient for numerous major health and food enterprises both domestically and internationally. Currently, our Bean Extract provides reliable raw material support and innovative application solutions to over 2,000 well-known health and food companies worldwide, a testament to the market's strong recognition of our product.

Extensive Market Application Areas: The application scope of Phaseolus Vulgaris Extract is remarkably broad, encompassing virtually all aspects of health and functional foods:

• Food Sector: Our extract has been successfully incorporated into a wide array of food categories, including convenient and delicious ready-to-eat meals, nutritionally balanced dietary supplements and meal replacement powders, healthy snacks such as biscuits, energy bars, puffed foods, jellies, compressed tablets, soft candies, as well as popular items like ice cream, dairy products, liquid beverages, solid beverages, coffee, baked goods, and even innovative products such as low-GI staple foods, meat products, and seasoning packets.
• Nutraceutical Sector: As a highly sought-after functional ingredient, our Phaseolus Vulgaris Extract is widely utilized in the development of leading products targeting weight management, blood sugar control, and lipid management, empowering consumers to achieve their health goals.
• Pharmaceutical Sector: Cutting-edge researchers are actively exploring the significant application potential of Phaseolus Vulgaris Extract in the pharmaceutical field, such as the development of novel therapeutic agents for diabetes, indicating an even broader future for our product.

White kidney bean extract is one of the few botanical ingredients with systematic-review-level evidence for weight management. That evidence quality matters to your regulatory team and your marketing claims.

Combination formulas pairing white kidney bean with mulberry leaf and green coffee extracts show promise for postprandial glycemic control. If you are developing a multi-ingredient metabolic support product, white kidney bean extract anchors the starch-blocking component.

Stable Raw Material Supply: We have established long-term, stable partnerships with local farmers to ensure a consistent supply of raw materials. Through contract farming and procurement, we guarantee the quality and quantity of raw materials, providing reliable material assurance to our clients.

Comprehensive Production and Warehousing Facilities: We possess comprehensive production and warehousing facilities to meet large-volume client demands. Our factory is equipped with advanced production equipment and automated production lines, enabling efficient production of high-quality products. Our warehousing facilities provide optimal storage conditions, ensuring product quality and stability during storage.

Professional Pre-sales and After-sales Service: We offer professional pre-sales and after-sales services, including product consultation, technical support, and logistics services. Our sales and customer service teams have extensive industry knowledge and experience, providing timely and professional assistance to clients.

Long-Term Partnership Philosophy: We value long-term partnerships with our clients, striving to create greater value for them. Through high-quality products and services, we help clients succeed in the market, achieving mutual benefit and win-win outcomes.

Express Under 100kg, 3-5Days Door-to-door service easy to pick up the goods	By Sea Over300kg, Around 30 Days Port-to-port service professional clearance broker needed	By Air 100kg-1000kg, 5-7Days Airport-to-airport service professional clearance broker needed

Storage: Keep in a cool, dry, and clean place, Protect from moisture and direct light.

Bulk Package: 25kg/drum.

Lead Time: 7 days after your order.

Shelf Life: 2 years.

Remark: Customized specifications can also be achieved.

Q1: What is the difference between 1% and 2% Phaseolin white kidney bean extract powder?

The percentage refers to the Phaseolin content measured by HPLC. A 2% specification delivers twice the active compound per gram. For capsule formulations targeting 250–500 mg per serving, the 1% grade is often sufficient. Choose 2% when you want to minimize excipient load or reduce serving size.

Q2: Is your white kidney bean extract powder non-GMO?

Yes. We source only non-GMO Phaseolus vulgaris seeds. A Non-GMO Statement accompanies every shipment.

Q3: Can I get a sample for formulation testing?

Yes. We provide 100 g samples free of charge. You cover the shipping cost. Contact info@jiuybiotech.com with your delivery address.

Q4: What is your minimum order quantity?

Our MOQ is 1 kg for standard specifications. For custom specifications, MOQ may increase depending on the degree of customization required.

Q5: How do you verify the α-amylase inhibitory activity?

We use the USP method for α-amylase inhibitory activity. Results are reported in USP units per gram. Every COA includes this data alongside the HPLC Phaseolin result.

Q6: Does the extract contain any allergens?

White kidney bean is a legume. If your finished product carries a legume allergen warning, this ingredient falls within that category. Our Allergen Statement provides full details. The extract itself is free from gluten, dairy, soy, and tree nut cross-contamination.

Q7: What is the shelf life and storage condition?

24 months from the date of manufacture when stored in sealed packaging, away from light and moisture, at temperatures below 25°C.

Q8: Do you offer custom specifications or OEM services?

Yes. We can adjust Phaseolin content, particle size, and packaging formats to match your formulation requirements. OEM and private-label support is available for orders above 100 kg.

Jiuyuan Biotech supplies white kidney bean extract powder to food manufacturers, supplement brands, and contract formulators across North America, Europe, and the Asia-Pacific region. Our technical team - not a generic sales inbox - handles every inquiry.

Email: info@jiuyuanbio.com

Website: www.jiuyuanbio.com

Request: Sample| Bulk Quote | CoA & Spec Sheet | Custom Carrier Ratio

Standard response time: within 1 business day. Please include your target application and annual volume estimate for the most relevant technical recommendation.