Table of Contents
What’s Ginkgo Biloba Extract?
Ginkgo Biloba draws from thousands of years of traditional use in Chinese and Japanese medicine, now validated by modern clinical research in cognitive function, cerebral circulation, and antioxidant defense. We offer two formats to serve different formulation needs — each with distinct potency, solubility, and application profiles.
Ginkgo Extract Powder — Standardized Bioactive Format:
Ethanol/water extraction precisely concentrates the two key compound classes: flavonoid glycosides (>=24%, measured by UV, including quercetin, kaempferol, and isorhamnetin glycosides) and terpene lactones (>=6%, measured by HPLC, including ginkgolide A, ginkgolide B, and bilobalide). This standardized potency ensures consistent dosing in cognitive enhancement, memory support, and peripheral circulation supplement formulations. Fully soluble in ethanol; partially soluble in water. The fine yellow-brown powder integrates into capsules, tablets, and functional liquid formats.
Ginkgo Leaf Powder — Whole-Food Traditional Format:
Whole-leaf air-drying preserves the complete phytochemical matrix, including natural flavonoid glycosides (8-12%), fiber, and the full spectrum of minor bioactive constituents found in the whole plant. The green-brown powder serves traditional applications: herbal decoctions, tea blends, and whole-food supplement capsules — positioned for clean-label formulations that prioritize holistic integrity over isolated standardization.
Dual-Format Strategy:
The extract targets precision-formulated supplements where exact flavonoid and terpene lactone content is required — cognitive capsules, anti-aging formulations, and therapeutic blood-flow protocols. The leaf powder targets holistic wellness products, traditional medicine practices, and budget-conscious formulations that still benefit from broad-spectrum antioxidant support.
Quality Assurance:
Ginkgolic acids — the primary sensitizing compounds in ginkgo — are strictly controlled to <5 ppm, exceeding most pharmacopoeial standards of <10 ppm. Heavy metal testing: lead <0.1 ppm, arsenic <0.05 ppm. All products tested to USP and ISO 26642 standards. Free samples (1 kg) available for formula testing.
Physical & Chemical Specifications
Product Specifications Comparison
| Parameter | Ginkgo Extract Powder | Ginkgo Leaf Powder |
|---|---|---|
| Latin Name | Ginkgo biloba L. | Ginkgo biloba L. |
| Part Used | Leaves | Leaves |
| Extraction | Ethanol/Water extraction | Air-dried, finely ground (whole leaf) |
| Flavonoid Glycosides | >=24% (UV) | 8-12% (natural) |
| Terpene Lactones | >=6% (HPLC) | Naturally present |
| Ginkgolide A/B + Bilobalide | Standardized (HPLC) | Naturally present |
| Appearance | Fine yellow-brown powder | Coarse green-brown powder |
| Solubility | Soluble in ethanol; partially in water | Partially soluble (tea-ready) |
| Ginkgolic Acids | <5 ppm (controlled) | <5 ppm |
| Lead (Pb) | <0.1 ppm | <0.1 ppm |
| Arsenic (As) | <0.05 ppm | <0.05 ppm |
| Moisture | <=5% | <=8% |
| pH | 4.5-6.5 | 5.0-7.0 |
| Shelf Life | 24 months | 18 months |
| Recommended Storage | Cool, dry, airtight, away from light | Cool, dry, airtight |
Key Active Compounds
| Compound | Extract | Leaf Powder |
|---|---|---|
| Flavonoid Glycosides | >=24% (UV: quercetin, kaempferol, isorhamnetin) | 8-12% (natural) |
| Terpene Lactones | >=6% (HPLC) | Naturally present |
| Ginkgolide A | Standardized | Naturally present |
| Ginkgolide B | Standardized | Naturally present |
| Bilobalide | Standardized | Naturally present |
| Ginkgolic Acids | <5 ppm (controlled) | <5 ppm |
Dosage Reference
| Format | Application | Typical Dose |
|---|---|---|
| Extract | Cognitive/memory capsules | 80-240 mg/day (standardized extract) |
| Extract | Cerebral circulation support | 120-160 mg/day |
| Extract | Tinnitus/vertigo (clinical studies) | 120-160 mg/day |
| Extract | Functional beverages | 50-150 mg per serving |
| Extract | Anti-aging skincare (topical) | 0.5-2% |
| Leaf Powder | Traditional herbal decoction | 3-9 g/day (dry weight) |
| Leaf Powder | Whole-food capsules | 500-1,000 mg per capsule |
| Leaf Powder | Tea blend | 1-2 tsp (~2-4 g) per 200 ml serving |
Microbiological & Contaminant Standards
| Test | Standard | Method |
|---|---|---|
| Total Plate Count (TPC) | <10,000 CFU/g | USP <61> |
| Yeast & Mold | <100 CFU/g | USP <61> |
| Salmonella | Not detected / 25g | ISO 6579 |
| E. coli | Not detected / g | USP <62> |
| Lead (Pb) | <0.1 ppm | ICP-MS |
| Arsenic (As) | <0.05 ppm | ICP-MS |
| Ginkgolic Acids | <5 ppm | HPLC |
| Pesticide Residues | Not detected | GC-MS / LC-MS |
All batches tested at accredited third-party laboratories. Certificate of Analysis (COA) available upon request.
Certifications
| Certification | Ginkgo Extract Powder | Ginkgo Leaf Powder |
|---|---|---|
| Non-GMO Project Verified | Verified | Verified |
| Vegan | Certified | Certified |
| Gluten-Free | Certified | Certified |
| Kosher | Available on request | Available on request |
| Halal | Available on request | Available on request |
| ISO 22000 | Compliant | Compliant |
| GMP | Certified | Certified |
| USP Standards | Compliant | Compliant |
Applications
Application Matrix
| Application | Ginkgo Extract Powder | Ginkgo Leaf Powder |
|---|---|---|
| Cognitive & memory capsules/tablets | Primary | — |
| Cerebral circulation softgels | Primary | — |
| Tinnitus/vertigo clinical formulations | Primary | — |
| Traditional herbal teas & decoctions | — | Primary |
| Whole-food herbal capsules | — | Primary |
| Functional beverages (RTD) | Secondary | — |
| Anti-aging skincare (serums/creams) | Secondary | — |
| Ayurvedic & TCM formulas | — | Primary |
| Holistic wellness blends | — | Secondary |
Key Health Benefits
| Benefit | Mechanism | Evidence |
|---|---|---|
| Cognitive Function | Flavonoid glycosides protect neuronal membranes; support acetylcholine signaling; antioxidant defense in hippocampus | Clinical studies: 120-240 mg/day standardized extract improves memory and attention |
| Cerebral Circulation | Ginkgolides modulate platelet-activating factor (PAF) receptor; support healthy microcirculation in brain and extremities | Human studies: improved cognitive performance in age-related decline |
| Peripheral Circulation | Vasodilatory effects improve blood flow to extremities; addresses cold hands/feet | Clinical use in peripheral arterial disease |
| Tinnitus & Vertigo | Improved cochlear microcirculation; PAF modulation | Clinically studied for inner ear health |
| Antioxidant Defense | Flavonoids neutralize reactive oxygen species (ROS) in neural tissue; complementary to vitamin E and CoQ10 | In vitro and in vivo evidence |
| Mitochondrial Support | Bilobalide supports neuronal mitochondrial function; cognitive resilience under oxidative stress | Preclinical studies |
Formulation Tips
| Scenario | Recommendation |
|---|---|
| Maximum bioactive potency | Choose extract (>=24% flavonoids + >=6% terpene lactones; HPLC batch-verified) |
| Traditional herbal positioning | Choose leaf powder (whole-plant matrix; holistic integrity; clean-label) |
| RTD functional beverages | Extract: add during cooling phase (<50 degrees C) to preserve sensitive terpene lactones; consider natural solubilizers |
| Traditional tea/decoction | Leaf powder: 1-2 tsp (2-4 g) per 200 ml; simmer 10 minutes; combine with gotu kola, ginseng, ashwagandha |
| Anti-aging topical | Extract: 0.5-2% in serums and creams; pairs with vitamin E and CoQ10 |
| Capsules with other botanicals | Extract: co-encapsulate with bacopa monnieri (dual-cognitive), phosphatidylserine (age-related memory), or vinpocetine (cerebral circulation) |
| Clean-label with no standardization claims | Leaf powder: declare as “ginkgo leaf powder”; no standardized extract language required |
FAQ
Q: What is the difference between the ginkgo extract powder and the leaf powder?
A: The extract is standardized to >=24% flavonoid glycosides and >=6% terpene lactones via ethanol/water extraction, providing precise, concentrated bioactive potency for cognitive and circulatory formulations. The leaf powder is air-dried whole leaf, retaining the complete phytochemical matrix with 8-12% natural flavonoids u002du002d suited for traditional teas, holistic capsules, and clean-label whole-food products. The extract targets high-potency supplement positioning; the leaf powder targets traditional herbal and whole-food markets.
Q: What does “standardized to 24% flavonoids and 6% terpene lactones” mean?
A: Standardization means each batch of extract delivers a guaranteed minimum of 24% flavonoid glycosides (quercetin, kaempferol, isorhamnetin) and 6% terpene lactones (ginkgolides A and B + bilobalide) as measured by UV and HPLC respectively. This ensures consistent potency and predictable clinical outcomes across batches u002du002d critical for supplement manufacturers and finished-good brands requiring reliable dosing.
Q: Can ginkgo help with anxiety and stress?
A: Research suggests ginkgo’s ability to support healthy cerebral blood flow may indirectly reduce anxiety symptoms related to poor microcirculation and cognitive overload. Human studies using 120-240 mg standardized extract daily have reported modest reductions in anxiety scores. Ginkgo is not a primary anxiolytic; consult a healthcare provider for clinically diagnosed anxiety.
Q: How should the leaf powder be used for traditional tea preparation?
A: For a traditional decoction, add 1-2 teaspoons (approximately 2-4 g) of leaf powder to 200 ml of water. Simmer gently for 10 minutes, then strain. The tea has a mild, slightly bitter herbal character. It can be combined with gotu kola, ginseng, or green tea for a traditional adaptogen blend.
Q: Is ginkgo safe for long-term daily use?
A: For most adults at recommended doses (80-240 mg/day standardized extract), daily use for up to 6 months is generally considered safe based on clinical data. Individuals on blood-thinning medications, those preparing for surgery (discontinue at least 14 days prior), or those with seizure disorders should avoid ginkgo or consult a healthcare professional. Cyclical use (e.g., 3 months on, 1 month off) is a common practice.
Q: Why are ginkgolic acids controlled to u0026lt;5 ppm?
A: Ginkgolic acids are naturally occurring alkylphenols in ginkgo that can cause allergic skin reactions and sensitisation in susceptible individuals. Most pharmacopoeias (Ph. Eur., USP) set limits at u0026lt;10 ppm. Our product exceeds these standards by controlling ginkgolic acids to u0026lt;5 ppm, reducing sensitisation risk and supporting clean-label claims.
Q: Is ginkgo suitable for a gluten-free, vegan, and keto diet?
A: Yes. Ginkgo biloba is a plant-based leaf extract/powder with no animal-derived ingredients, no gluten-containing grains, and a negligible carbohydrate profile. Terpene lactones and flavonoids are non-caloric phytochemicals. Both formats are fully compatible with vegan, vegetarian, gluten-free, and keto lifestyle positioning.
Q: What is the MOQ, and can I get samples for formulation testing?
A: We offer free 1 kg samples via FEDEX, UPS, and EMS for formula and sensory testing. Standard bulk MOQ is 25 kg. Private label formulations and custom blends require 100 kg minimum. Standard lead time is 10-20 business days from Qingdao or Tianjin port. Payment via D/A, D/P, L/C, T/T, MoneyGram, Western Union, and credit card accepted.
Packaging & Storage
Packaging Specifications
| Parameter | Ginkgo Extract Powder | Ginkgo Leaf Powder |
|---|---|---|
| Standard Unit | 25 kg food-grade drum | 25 kg food-grade drum |
| Drum Dimensions | 40 x 40 x 60 cm | 40 x 40 x 60 cm |
| Pallets | 40 drums per pallet | 40 drums per pallet |
| Sample Pack | 1 kg (free, FEDEX/UPS/EMS) | 1 kg (free, FEDEX/UPS/EMS) |
| Custom Packaging | Available | Available |
Storage Conditions
| Condition | Ginkgo Extract Powder | Ginkgo Leaf Powder |
|---|---|---|
| Temperature | Below 25 degrees C | Below 25 degrees C |
| Humidity | Below 50% RH | Below 50% RH |
| Light | Away from direct sunlight | Away from direct sunlight |
| Container | Airtight original packaging | Airtight original packaging |
| Shelf Life | 24 months | 18 months |
Terpene lactones and flavonoid glycosides are sensitive to prolonged heat and UV exposure. Store in a cool, dry, shaded location in airtight packaging.
