Olive Leaf Extract Oleanolic Acid Powder
Olive Leaf Extract Oleanolic Acid Powder
If you want to Olive Leaf Extract Powder? As a professional herbal extract manufacturer, Kintainutri® offers wholesale Oleanolic Acid Powder.
Contact us now to get free samples and detailed technical guidance!
What is Olive Leaf Extract Powder
Olive Leaf Extract Powder is a natural active ingredient extracted from the leaves of Olea, a plant belonging to the Oleaceae family, with oleanolic acid as its core extracted component. As a professional plant extract manufacturer in China, Kintainutri® mainly provide 30% and 50% oleanolic acid powder to global customers. Oleanolic acid powder possesses various effects, such as antioxidant, anti-inflammatory, and immune-enhancing properties. It has broad applications and can be used in pharmaceuticals, health supplements, cosmetics, and related products.

Kintainutri® Olive Leaf Extract Powder Advantages
1.Natural Source of Raw Materials
The olive leaves used in Kintainutri® are sourced from cultivation bases that adhere to green farming standards throughout the entire process, ensuring the natural purity of the raw materials from the very beginning. The olive trees in these bases grow in excellent environments, free from excessive heavy metal and pesticide residues, laying a solid foundation for high-quality extraction. Each batch of raw materials undergoes rigorous testing before being stored in the warehouse to ensure it meets the requirements for extraction and processing.
2.Superior Product Quality
We have 30% and 50% powder of oleanolic acid, with extremely low impurity content. Each batch of the product undergoes testing by a third-party authoritative institution and complies with international safety standards. The testing items cover ingredient content, microbial indicators, and more, with fully traceable reports to ensure customers can use the product with confidence. The product boasts strong stability, is easy to store and transport, and can meet the application requirements of different industries.
3.Service Assurance
As a professional plant extract enterprise, Kintainutri® boasts an experienced and specialized team capable of providing customized product solutions to meet the individualized needs of clients. With swift order responses and short lead times, coupled with an efficient logistics system, we ensure timely delivery of goods to destinations worldwide. Our after-sales team provides end-to-end follow-up, promptly addressing client inquiries and offering professional technical support.
Olive Leaf Extract Powder Production Process
1.Raw Material Pretreatment
R Raw Material Selection
Select high-quality olive leaves and remove impurities (such as dead branches, sediment, pest-infested leaves, etc.) to ensure the purity of raw materials.
R Cleaning and Draining
Rinse the olive leaves quickly with clean water to remove surface dust and impurities, then drain the water thoroughly to avoid introducing excessive moisture that may affect the efficiency of subsequent extraction.
R Crushing Treatment
Feed the drained olive leaves into a crusher and crush them into powder with appropriate particle size (80 mesh) to increase the contact area between raw materials and solvents, thereby improving extraction efficiency.
2.Extraction Process
R Solvent Selection and Proportioning
Ethanol aqueous solution is used as the extraction solvent (with a common concentration of 50%-70%). The olive leaf powder and solvent are added into the extraction tank at a solid-liquid ratio of 1:8 to 1:12.
R Heating Extraction
The extraction tank is heated, with the temperature controlled at 60-80℃. The reflux extraction method is adopted, and the extraction is performed 2-3 times, with each extraction lasting 1-2 hours, so as to fully dissolve the active ingredients such as oleanolic acid in the raw materials.
R Filtration and Separation
After extraction, the extract and dregs are separated immediately while hot using a plate-and-frame filter or centrifugal filter. The filtrate is collected, and the dregs can undergo secondary extraction to improve utilization efficiency.
3.Purification and Refinement
R Concentration Treatment
The filtrate is transferred to a rotary evaporator or vacuum concentration tank, where it undergoes evaporation and concentration under reduced pressure (at a temperature of 50-60°C) to remove part of the ethanol solvent, resulting in an extract with a relative density of 1.10-1.20.
R Impurity Removal and Purification
An appropriate amount of water is added to the extract and stirred uniformly. Subsequently, organic solvents such as petroleum ether are used for extraction to remove fat-soluble impurities. Further purification is performed via macroporous resin adsorption: after adsorption, the resin is eluted with an ethanol solution, and the eluate is collected.
R Re-concentration
The eluate is subjected to reduced-pressure concentration again to remove ethanol, yielding a relatively pure oleanolic acid concentrate.
4.Drying and Finished Product
R Crystallization
The concentrated solution is placed in a low-temperature environment (0-5°C) and allowed to stand for 12-24 hours to facilitate the crystallization and precipitation of oleanolic acid.
R Separation and Washing
The crystals are separated by centrifugation, then washed with a small amount of cold water or ethanol to remove residual impurities on the surface.
R Drying and Pulverization
The cleaned crystals are placed in a vacuum drying oven and dried at 50-60°C until the moisture content is ≤5%. After drying, they are pulverized into uniform powder using an ultra-fine pulverizer, yielding the finished product of olive leaf extract (oleanolic acid).
R Inspection and Packaging
The finished product undergoes index testing such as content determination (typically using High-Performance Liquid Chromatography, HPLC, to detect oleanolic acid content) and microbial limit testing. Qualified products are packaged according to standard specifications and stored in the warehouse.

Specifications Of Kintainutri® Olive Leaf Extract Powder
| Specification | Application | Recommended about dose |
|---|---|---|
| 30% Olive Leaf Extract Powder | Food and beverages (supplements) | 500 - 1000 mg/day |
| 30% Olive Leaf Extract Powder | Cosmetics and Personal Care | 0.05%-0.2% |
| 30% Olive Leaf Extract Powder | Medicine | Low concentration initial condition |
| Specification | Application | Recommended about dose |
|---|---|---|
| 50% Olive Leaf Extract Powder | Food and beverages (nutritional supplements) | 300-600mg/day |
| 50% Olive Leaf Extract Powder | Cosmetics (skin care products) | 0.05%-0.15% |
| 50% Olive Leaf Extract Powder | Health supplements (oral preparations) | 400-600mg/day |
Notes: The above information is for reference only. The specific dosage should be determined according to the requirements of the product and the market.
Olive Leaf Extract Powder Functions
1.Cardiovascular health support
Olive Leaf Extract Powder plays a positive role in regulating cholesterol levels and can help reduce bad cholesterol. Meanwhile, it may also have a beneficial impact on blood pressure, contributing to maintaining the stability of the cardiovascular system.
2.Antibacterial and antiviral capabilities
Olive leaf extract, particularly oleuropein, exhibits inhibitory effects against a variety of bacteria and viruses, exerting significant antimicrobial activity. It can help fend off microbial invasions and build a natural protective barrier for the body.
3.Beneficial for skin health
Due to its antioxidant, astringent and moisturizing properties, it is widely used in cosmetics and skin care products. After use, it can nourish the skin, improve the skin condition and keep the skin in a good texture.
4.Potential anticancer effect
Studies have found that olive leaf extract may have potential anticancer properties, providing a new research direction for cancer prevention and adjuvant treatment. Although relevant research is still ongoing, this potential efficacy demonstrates its significant value in the field of health.
2.Safe Extraction Process
3.Product Safety Testing

Safety of Olive Leaf Extract Powder
1.Naturally Safe Raw Materials
The olive leaves we select as raw materials all come from compliant cultivation bases. We monitor the entire planting process to avoid issues such as pesticide residues and excessive heavy metal content. After harvesting, the raw materials undergo strict screening to remove unqualified leaves, ensuring the safety of the extraction materials from the very source. All raw materials pass tests conducted by third-party institutions and comply with internationally recognized safety standards for raw materials.
2.Safe Extraction Process
We employ advanced green extraction techniques, utilizing food-grade solvents throughout the entire process to prevent the residue of harmful chemicals. The extraction process strictly adheres to Good Manufacturing Practice (GMP) standards, with the workshop environment meeting the required cleanliness levels to ensure the production process remains uncontaminated. The process parameters have undergone multiple rounds of optimization and validation, ensuring full controllability throughout and safeguarding the purity and safety of the extracts.
3.Product Safety Testing
The finished oleanolic acid powder undergoes multiple rounds of rigorous testing, covering microbial indicators, heavy metal content, harmful residues, and other items. Each batch of the product is accompanied by a detailed test report for customers to review and verify.

What can Kintainutri® do?

1.Stable Supply
Kintainutri® has established long-term and stable procurement channels for olive leaf raw materials, engaging in in-depth cooperation with high-quality cultivation bases to ensure a continuous supply of raw materials from the source. We possess large-scale production workshops and standardized production lines, enabling the continuous production of oleanolic acid powder to meet customers' large-volume and regular procurement needs.
2.Customized Services
We can tailor the purity, specifications, and packaging of oleanolic acid powder according to customer requirements. Our professional team provides end-to-end support, from sample provision to mass production, ensuring an efficient and seamless supply process that meets customers' diverse needs raw materials.
3.Quality Assurance
The company boasts a comprehensive quality control system, conducting multi-stage inspections on oleanolic acid extracted from olive leaves and providing detailed quality inspection reports to ensure customers have complete peace of mind during application.
For more information about Olive Leaf Extract Powder, please feel free to contact us!
*KINTAI Promise All Products: Non-Irradiated / Non-ETO/ Treat by Heat Only / Non-GMO
















