What is Dahurian Rhodoendron Leaf Extract?
Dahurian Rhododendron Leaf Extract is a natural botanical extract derived from the foliage of Rhododendron dauricum. Modern research indicates that Dahurian Rhododendron Leaf Extract is rich in flavonoids, polyphenols, and volatile compounds. This composition lends its potential applications in antioxidant support, anti-inflammatory effects, and respiratory health maintenance, establishing it as a distinctive ingredient within the functional botanical extract sector.
APPCHEM's Dahurian Rhododendron Leaf Extract focuses on key bioactive constituents within the foliage. The product utilises premium, traceable Xing'an Rhododendron leaves as raw material. Through scientifically designed solvent extraction, multi-stage separation, and purification processes, the raw material undergoes systematic extraction and refinement. Rigorous standardised extraction and quality control procedures are implemented throughout production, ensuring the extract meets professional application requirements for dietary supplements and functional formulations in terms of active ingredient content, purity, stability, and batch consistency.
Dahurian Rhododendron Leaf Extract is typically supplied in powder form, offering excellent formulation compatibility and processing adaptability. It is suitable for various dietary supplement dosage forms, including capsules, tablets, and granules. In practical applications, this extract may be utilised in formulations for antioxidant support, respiratory health, protective nutrition, and soothing properties. It may also be synergistically combined with botanical ingredients such as liquorice extract, elderberry extract, and quercetin to broaden its functional nutritional applications.
Certificate Of Analysis (COA)
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General Information |
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Name |
Dahurian Rhododendron Leaf Extract |
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Item |
Specification |
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Appearance |
Brown Powder |
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Odor |
Characteristic |
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Taste |
Characteristic |
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Particle Size |
95% pass 80 mesh |
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Physical |
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Loss on Drying |
≤5.0% |
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Sulphated Ash |
≤5.0% |
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Chemical |
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Pb |
≤3mg/kg |
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As |
≤1mg/kg |
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Hg |
≤0.1mg/kg |
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Cd |
≤1mg/kg |
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Microbial |
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Total microbacterial count |
≤1000cfu/g |
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Yeast & Mold |
≤100cfu/g |
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E.Coli |
Negative |
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Staphylococcus aureus |
Negative |
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Salmonella |
Negative |
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Enterobacteriaceaes |
Negative |
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Conclusion |
Conforms to specification |
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Storage: |
Store in a cool, dry, well-ventilated area; keep in tightly sealed containers, preferably full. |
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Shelf Life: |
24 months when properly stored. |
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Status: |
Non-irradiation; Non-GMO; No Carrier; Halal & Kosher certified. |
What is the Process Flow Diagram?
XI'AN APP-CHEM BIO (TECH) CO., LTD. (APPCHEM) provides Dahurian Rhodoendron Leaf Extract utilising a mature, reproducible industrial plant extraction process, comprising the following principal steps:
- Washing
- Filtering
- Removing impurities
- Drying: to prevent high-temperature damage to thermosensitive active ingredients, especially volatile oils.
- Crushing: (such as 80 mesh) to increase the contact area with the solvent and improve extraction efficiency.
- Extraction
- Solid-liquid separation
- Purification
- Concentrate
- Drying
- Smashing
- Packaging
- Finished product
What are the Benefits and applications of Dahurian Rhododendron Leaf Extract?
The core value of Dahurian Rhododendron Leaf Extract in dietary supplements lies in its multi-targeted bioactive mechanisms, which synergistically regulate multiple physiological systems within the human body.
- Antioxidant and Free Radical Scavenging:
The flavonoids (such as quercetin and kaempferol) and phenolic acid compounds within Dahurian Rhododendron Leaf Extract directly scavenge reactive oxygen species (ROS) such as superoxide anion and hydroxyl radicals within the body. They stabilise free radicals by electron donation and activate intracellular antioxidant enzymes (such as SOD and CAT), thereby mitigating cellular damage caused by oxidative stress.
Applications: Suitable for anti-ageing formulations, sports nutrition, and skin health products requiring antioxidant and anti-ageing properties.
- Anti-inflammatory and Immunomodulatory Effects:
Terpenoids (α-menthene, β-farnesene) in Dahurian Rhododendron Leaf Extract have been demonstrated to inhibit the nuclear factor-κB (NF-κB) signalling pathway, reducing production of inflammatory mediators (e.g., TNF-α, IL-6, NO). Concurrently, polysaccharide components activate macrophages and T cells, enhancing the body's immune defence capabilities.
Application Scenarios: Suitable for respiratory health (alleviating bronchial inflammation), joint health (anti-osteoarthritis), and general immunity-boosting products.
- Antibacterial and Antiviral:
Dahurian Rhododendron Leaf Extract exhibits inhibitory effects against multiple common pathogens, including Staphylococcus aureus. Furthermore, certain characteristic cycloenones (e.g., Cycloenone I) possess anti-HIV activity, inhibiting viral replication.
Applications: Suitable for oral health (relieving mouth ulcers) and specific antiviral formulations.
- Respiratory Health:
Dahurian Rhododendron Leaf Extract may be used in the treatment of pulmonary infections, coughs, and bronchitis. Its active constituents alleviate respiratory symptoms through antitussive, bronchodilatory, and mucus-secreting effects.
Applications: Suitable for cough syrups, throat lozenges, and pharyngitis relief products.
Factory Strength
Bon Natural Life(Nasdaq: BON)
The Company is headquartered in Xi'an High-tech Zone, Shaanxi Province, with an independent R&D centre and testing laboratories. Its Dali and Tongchuan production sites cover a total area of nearly 20,000 square meters, and it operates through the marketing networks in and out of China.
DALI FACTORY
Covering 30 acres and a building area of 11000 m²
Having a plant extract workshop, a precision drying and packaging workshop, and a spice refining workshop
TONGCHUAN FACTORY
Covering 20 acres, with a construction area of 6900 m²
Having 3 clean workshops, 2 formula product production lines, and 1 special food production line under construction
2006
Since
17,900 m²
Building area
90M
Order received
30+
Patents
Certificates
Security statement：
Our company guarantees that the goods sent are safe, non-flammable, and non-explosive, and consistent with the declaration. Under normal transportation conditions, all losses caused by the products sent by our company shall be borne by our company.
Hot Tags: Dahurian Rhodoendron Leaf Extract manufacturers, suppliers, factory, wholesale, best, price, buy, for sale, bulk.
Shipping and Packaging
Long-term cooperative logistics companies include international logistics companies such as DHL, FedEx, UPS, etc.
The regular bulk packaging of the product is a 25kg plastic bag and a cardboard drum. The sample is packaged in an inner aluminium foil bag and an outer plastic bag, supporting customised packaging solutions.
Exhibition Photos
XI'AN APP-CHEM BIO (TECH) CO., LTD. (APPCHEM) regularly participates in international raw material exhibitions such as CPHI, SSW, and In Cosmetics Asia, and establishes long-term cooperative relationships with global customers.
FAQ
Q1. How is the purity of this product verified?
A1: We employ authoritative analytical methods such as High Performance Liquid Chromatography (HPLC) and Ultraviolet Spectroscopy (UV) to ensure the content.
Q2. What is the minimum order quantity for Dahurian Rhodoendron Leaf Extract?
A2: Our minimum order quantity (MOQ) varies by product and specific requirements, and is typically negotiable. Please contact us for detailed information.
Q3. What is the delivery timeframe for Dahurian Rhododendron Leaf Extract?
A3: Delivery times depend on order volume and product type. Generally, we arrange production and dispatch promptly upon order confirmation.
Q4. Does APPCHEM offer customisation services?
A4: Yes, we provide customisation services including packaging, labelling, and adjusting product specifications to meet specific client requirements.
Q5. How does APPCHEM ensure product quality and stability?
A5: We maintain a rigorous quality control system. All products undergo third-party testing, with detailed COA (Certificate of Analysis) and stability data provided.
Reference
[1]Tieqiang Zong, Yongkang Xue et al. "One new isoprenylated resorcinoid and one new chromene meroterpenoid with potential anti-inflammatory effects from the leaves of Rhododendron dauricum L." Natural product research (2025).
[2]M. Oyaizu. "Studies on products of browning reaction--antioxidative activities of products of browning reaction prepared from glucosamine." THE JAPANESE JOURNAL OF NUTRITION AND DIETETICS (1986).
[3]Zhang Shu-jun. "Chemical constituents from the leaves of Rhododendron dauricum L." Journal of Qiqihar University (2013).
[4]D. Olennikov, L. V. Dudareva et al. "Chemical composition of essential oils from leaves of Rhododendron dauricum and R. aureum." Chemistry of Natural Compounds (2009).
[5]Bei Wang, Wei Liu et al. "(±)-Rhodaulision A and B, two pairs of meroterpenoids from branches and leaves of Rhododendron dauricum L. and their anti-osteoarthritis activity." Natural product research (2025).
