Eucommia Leaf Extract

Main Active Ingredients:
Chlorogenic Acid – CAS: 327-97-9 | Assay: 50% – 98% (HPLC) | Renewable Leaf Source
Application: dietary supplements | functional foods & beverages | antioxidant formulations | cosmetic actives | nutraceutical & pharmaceutical ingredient applications
MOQ: 1KG
Certifications: FDA Registered Facility, GMP, ISO, Kosher, Halal, Non-GMO

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Bulk Eucommia Leaf Extract Supplier — 50% & 98% Chlorogenic Acid (CGA), Caffeine-Free, B2B Wholesale

Written by Jonathan, Valeherb · Reviewed by Dr. Xiaoyan Qiu · Updated June 2026

Valeherb supplies eucommia leaf extract bulk wholesale in two standardized chlorogenic-acid (CGA) grades — 50% CGA and 98% CGA, among the highest-purity CGA grades commercially available from any botanical source, including green coffee bean, and at zero caffeine. Every batch ships with a full HPLC COA, and custom specifications are available on request.

On this page: how leaf and bark differ, the leaf’s active-compound profile, the two CGA grades (50% & 98%) and the 98% cost advantage, formulation applications, and quality/regulatory notes. For CGA mechanisms, isomer profiles, and bioavailability data, see our technical guide: Chlorogenic Acid Benefits, Sources & Applications.

Leaf vs. Bark: Why the Distinction Matters

Eucommia ulmoides bark (Du Zhong) and leaf (Du Zhong Ye) carry separate monographs in the Chinese Pharmacopoeia (ChP 2020) — a recognition that they have meaningfully different compound profiles, not just different plant parts. Valeherb standardizes on the leaf for chlorogenic-acid grades; the comparison below is provided as sourcing context for buyers evaluating CGA raw material.

Parameter	Eucommia Leaf Extract	Eucommia Bark Extract
Primary Bioactives	Chlorogenic acid (dominant), aucubin, geniposidic acid, quercetin, rutin	Pinoresinol diglucoside, aucubin, geniposidic acid (lower chlorogenic acid)
Chlorogenic Acid Content	Up to 98% standardized extract — preferred source for high-purity CGA	Lower — not the standard source for chlorogenic acid specifications
Typical Application Areas	High-purity CGA supplements and functional foods, antioxidant-positioned products, cosmetics	Traditional TCM Du Zhong formulas; adaptogen and herbal tonic blends
Sustainability	Renewable harvest — leaves collected without felling trees	Bark harvest requires tree sacrifice; longer regeneration cycle
ChP Monograph	Folium Eucommiae	Cortex Eucommiae

Active Compounds and Studied Mechanisms

The mechanisms below describe activity reported for these compounds in published research. They are provided as scientific context for formulators, not as claims for any Valeherb product.

Compound Class	Key Compounds	Mechanisms Reported in Research
Phenolic Acids	Chlorogenic acid — dominant in leaf	Studied for antioxidant activity and suppression of oxidative stress, platelet-aggregation and vasodilatory/circulatory endpoints, and regulation of glucose and lipid metabolism^[1]
Iridoid Glycosides	Aucubin, geniposidic acid	Studied in animal models for longitudinal bone-growth and growth-plate endpoints^[2], and for vascular and lipid-metabolism endpoints via gut-microbiota and AhR/TGF-β signaling^[3]
Flavonoids	Quercetin, rutin, kaempferol derivatives	Co-occurring antioxidant constituents of the leaf matrix; present mainly in lower-standardization grades

Valeherb’s grades are quantified and standardized on chlorogenic acid by HPLC. The 98% grade is near-pure CGA, while the 50% grade retains more of the native leaf matrix (and therefore more of the co-occurring iridoid and flavonoid fraction).

Available Grades and Specifications

Both grades are HPLC-verified per batch from Eucommia ulmoides leaf. For reference, the industry standard for green coffee bean extract is 50% CGA — Valeherb’s 50% grade matches this at zero caffeine, and the 98% grade is among the highest-purity CGA available at present.

Grade	Chlorogenic Acid (HPLC)	Appearance	Typical Application
High-Potency Extract	50%	Light yellow powder	High-CGA supplement and functional-food formulations; caffeine-free alternative to green coffee bean extract
Ultra-High Purity Extract	98%	White to off-white powder	For pharmaceutical & nutraceutical use; minimal inclusion rate; cosmetic actives; caffeine-sensitive product lines

PURITY NOTE

At 98% CGA, reaching a 300 mg target dose takes only about 310 mg of extract — versus 600–650 mg of a standard 50% green coffee bean extract. That means a smaller capsule, lower raw-material cost per unit at scale, and no caffeine to manage in the finished product.

Formulation Applications

CGA-standardized supplements: 200–500 mg per serving using the 50% grade. A caffeine-free CGA source that blends with botanicals such as hawthorn, olive leaf, and hibiscus in multi-ingredient supplement systems
High-purity actives (pharmaceutical & nutraceutical use): 98% grade for precise dosing, tight documentation, low inclusion rate, and caffeine-free formulation
Antioxidant functional foods and beverages: caffeine-free CGA for clean-label capsules, powders, and RTD fortification, paired with complementary botanicals in functional-food systems
Cosmetics and skincare: 98% grade as a high-purity natural antioxidant active; neutral flavor and zero caffeine suit both topical and ingestible-beauty formats

Quality and Regulatory Notes

CAUTION

Formulation flags to disclose downstream: as a general precaution, finished-product labels should advise users taking prescription medication — including antihypertensives — to consult a healthcare professional before use. Traditional TCM sources advise caution with high-dose use during pregnancy. Standard supplement amounts used in published research are generally well-tolerated in healthy adults.

US (DSHEA): Any structure/function claims on finished products must be substantiated by the marketer and carry the required FDA disclaimer. Antioxidant structure/function claims are the most readily supported; for blood-pressure positioning, only “supports healthy blood pressure levels already within the normal range” style wording is permissible — disease treatment claims require drug approval
China (ChP 2020): Folium Eucommiae (杜仲叶) and Cortex Eucommiae (杜仲) both carry separate standardized monographs — directly relevant for domestic and export regulatory documentation
EU / Canada: Novel food status may apply for certain extract preparations in the EU; Canada NHP leaf-extract status should be confirmed with a regulatory consultant
Facility: FDA-registered. COA per batch includes HPLC active-compound content, heavy metals (USP <232>), pesticide residues, and microbial limits (USP <2021>)

References

[1] Li L et al. (2020). Chlorogenic Acids in Cardiovascular Disease: A Review of Dietary Consumption, Pharmacology, and Pharmacokinetics. Journal of Agricultural and Food Chemistry. 2020;68(24):6464-6484. doi: 10.1021/acs.jafc.0c01554

[2] Kim JY et al. (2015). Effects of Eucommia ulmoides extract on longitudinal bone growth rate in adolescent female rats. Phytotherapy Research. 2015;29(1):148-153. doi: 10.1002/ptr.5195

[3] Luo Z et al. (2024). Aucubin ameliorates atherosclerosis by modulating tryptophan metabolism and inhibiting endothelial-mesenchymal transitions via gut microbiota regulation. Phytomedicine. 2024;135:156122. doi: 10.1016/j.phymed.2024.156122

Disclaimer: This article is intended for informational purposes only. All health-related statements reference published peer-reviewed research and are not intended as medical advice. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Products must comply with applicable regulations in the buyer’s jurisdiction. © 2026 Valeherb. All rights reserved.

FAQ

Q1:What is the difference between 50% and 98% chlorogenic acid eucommia leaf extract?

A1:The number is the HPLC-assayed CGA content. The 50% grade is a high-potency extract that still carries a portion of the native leaf matrix, while the 98% grade is near-pure chlorogenic acid for low-inclusion, tightly documented formulation. Both are caffeine-free and verified per batch. Choose 50% for cost-balanced functional-food and supplement use, and 98% where capsule size, precise dosing, or cosmetic actives matter.

Q2: How does eucommia leaf extract compare to green coffee bean extract as a CGA source?

A2:The industry-standard green coffee bean extract is typically 50% CGA and carries residual caffeine. Eucommia leaf reaches up to 98% CGA at zero caffeine, so a 98% grade hits a 300 mg CGA target in roughly 310 mg of powder versus 600–650 mg of a 50% green coffee bean extract — a smaller capsule and no caffeine to manage downstream.

Q3:What purity grade of eucommia leaf extract should I use for blood pressure versus bone health formulations?

A3:Yes. Unlike coffee-derived chlorogenic acid, eucommia leaf contains no caffeine, so both the 50% and 98% grades are suitable for caffeine-sensitive supplement lines, evening-use formats, and stimulant-free functional foods and beverages.

Q4:What is the difference between eucommia leaf and bark extract?

A4:Leaf and bark carry separate Chinese Pharmacopoeia monographs and differ in compound profile: the leaf is dominant in chlorogenic acid and is the preferred source for high-purity CGA, while the bark is lower in CGA and richer in pinoresinol diglucoside, used mainly in traditional Du Zhong formulas. Valeherb standardizes on the leaf for its CGA grades.