Standardized Botanical Concentrates & Specialty Powders
Manufactured under strict GMP-compliant environmental controls with origin-direct traceability, molecular assays validated by HPLC, and instant cold-water solubility for functional foods, RTD beverages, and nutraceutical formulations.
Water-Soluble Red Beetroot Juice Powder
100% cold-water soluble spray-dried concentrate, rich in dietary nitrates and natural betanin pigments. Ideal for clean-label sports pre-workout drinks and natural coloring.
Natural Urtica Dioica Stinging Nettle Root Extract
Solvent-extracted using food-grade hydroethanolic reflux, concentrated and standardized for β-sitosterol and scopoletin to support prostate wellness and anti-inflammatory pathways.
Custom Tin & Pouch Organic Ceremonial Matcha
Shade-grown first-flush Gyokuro leaves, traditional granite stone-milled into an ultra-fine powder. Rich in L-theanine and EGCG, complete with custom tin/pouch retail packaging.
Instant Water Soluble Organic Black Tea Powder
Pure tea solids extracted via low-temperature counter-current extraction and membrane concentration. Leaves no turbidity or sediment in cold brew or sparkling RTD bottling.
Organic Roasted Hojicha Powder (Food Grade)
Slow-roasted Japanese green tea bancha leaves roasted in porcelain pots over charcoal. Delivers a toasty, nutty aroma with low bitterness and minimal caffeine for lattes and baking.
Natural Purple Yam Ube Concentrate Powder
Processed from premium Dioscorea alata tubers using freeze-drying and gentle dehydration to maintain natural purple anthocyanins, earthy sweetness, and smooth mouthfeel.
USDA Organic Ceremonial Grade Matcha Powder
Spring harvest shade-grown tencha with intense chlorophyll content and unmatched umami profile. Compliant with BS EN 15662 pesticide multi-residue zero-tolerance thresholds.
Water-Soluble Instant Black Tea Powder
Engineered for commercial milk tea chains and beverage processing facilities. Retains bold thearubigins and authentic malty tea flavor without precipitating in chilled water.
Why Tier-1 Global Brands Partner with Our Xi'an Manufacturing Facility
Headquartered in Xi'an, Shaanxi—China’s botanical extraction heartland—Xi'an Vexli Bio-Tech operates on-site audited production lines that eliminate intermediate broker markups and guarantee authentic, unadulterated botanical compounds.
Direct-at-Origin Sourcing
We source raw herbal materials directly from audited GAP (Good Agricultural Practices) partner farms across 25 strategic botanical regions in China, ensuring tight genetic authentication and stable raw input cost structures.
- No secondary spot-market trading risk
- Fully traceable batch harvest logging
- Direct oversight of pesticide applications
SGS On-Site Audited Plant
Our manufacturing and processing facilities have passed exhaustive on-site supplier verification audits performed by SGS. We run closed-loop extraction lines with zero environmental contamination risk.
- ISO 22000 & HACCP certified systems
- USDA Organic & EU Organic operational lines
- Cleanroom class-D pulverizing and packing
Proprietary Patent Portfolio
Recognized as an official High-Tech Enterprise, our R&D center holds genuine intellectual property, including Invention Patent ZL 2014 1 0464649.9 and continuous extraction equipment Patent No. 14520048.
- High-yield low-temperature concentration
- High-resolution macroporous resin columns
- Continuous spray drying & microencapsulation
Agile OEM & Private Label
From 1 kg pilot batches to multi-ton international container shipments, we deliver full turnkey OEM/ODM services: formulation blending, micronization up to 1000 mesh, stick packing, custom tins, and DDP delivery.
- Flexible low MOQ starting from 1 kg
- Fortune 500 verified supplier track record
- Full export logistics clearance: IATA / IMDG
Technological Frontiers in Botanical Concentration & Extraction
The global botanical extract sector is undergoing an aggressive structural shift away from harsh organic solvents toward gentle, biomimetic, and zero-effluent concentration methods that preserve thermolabile phytonutrients.
1. Subcritical & Supercritical Fluid Extraction (SFE-CO2)
Traditional hydroalcoholic reflux often subjects delicate polyphenols, terpene lactones, and flavonoids to prolonged heat, causing isomer degradation. Modern industrial manufacturing increasingly relies on supercritical carbon dioxide and low-temperature subcritical water extraction.
Operating under oxygen-free conditions at temperatures below 45°C, this process prevents oxidative browning, yields zero residual petroleum solvents (fulfilling European Directive 2009/32/EC), and provides unmatched selectivity for lipid-soluble and volatile phyto-actives.
2. Ceramic Membrane Nanofiltration & Cold Concentration
Thermal evaporation under atmospheric pressure is rapidly becoming obsolete in Tier-1 extract factories. We employ tubular ceramic multi-channel cross-flow membrane systems followed by spiral-wound polymeric nanofiltration.
By executing molecular cut-offs (MWCO 300 to 1,000 Daltons), factories can physically segregate active polyphenols and anthocyanins from inorganic salts and heavy pectins without requiring steam thermal degradation, cutting energy consumption by 40% while preserving original aromatic esters.
3. Microencapsulation & Controlled Spray-Drying Agglomeration
Highly concentrated natural extracts—especially beetroots, red teas, and high-polysaccharide mushrooms—are naturally hygroscopic, leading to caking during storage. The latest industry paradigm combines fluid-bed agglomeration with clean-label carrier matrixing (organic acacia gum, resistant dextrins, pea proteins).
This transforms sticky herbal concentrates into free-flowing, dust-free granules with high bulk density (0.45–0.60 g/ml), ensuring seamless automated capsule filling and immediate cold-water dispersion without clumping.
Emerging Trends Reshaping Botanical Ingredient Procurement
Global regulatory tightening and clean-label consumer mandates are transforming how brand formulators, procurement executives, and contract manufacturers evaluate their supply chain partners.
Mandatory BS EN 15662 Multi-Residue Pesticide Compliance
Global regulatory bodies like the EFSA (European Food Safety Authority) and the US FDA have significantly lowered Maximum Residue Limits (MRLs) for compounds such as chlorpyrifos, anthraquinone, and ethylene oxide (ETO). Procurement teams can no longer accept generic non-specific COAs.
Leading buyers now require comprehensive gas chromatography-tandem mass spectrometry (GC-MS/MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) multi-residue pesticide screens covering 500+ compounds verified by accredited third parties like SGS or Eurofins prior to lot dispatch.
Pharmacopoeial Fingerprinting vs. Simple "Extract Ratios"
The historical procurement practice of buying non-verifiable "10:1" or "20:1" ratio extracts without validated chemical markers is rapidly fading. Ratio claims are frequently manipulated via low-cost maltodextrin loading or exhausted botanicals.
Today’s strategic buyers demand quantitative HPLC / HPTLC chromatographic fingerprinting matched against USP, EP, or ChP reference standards. Active marker profiles (e.g., specific betanins, theaflavin fractions, or polysaccharides) must be chemically defined with quantitative peaks to verify true biological concentration.
ESG, Deforestation Tracking & Origin Direct Auditing
With regulations like the European Deforestation Regulation (EUDR) taking effect, the origin narrative has moved from marketing copy directly into legal compliance. Procurement officers require granular farm-level geolocation coordinates, non-GMO certificates, and fair agricultural labor certifications.
Partnering with primary extract manufacturers like Xi'an Vexli Bio-Tech—who operate directly at herbal agricultural source regions—provides institutional buyers with verifiable farm-to-dock environmental transparency and full legal compliance across customs clearance borders.
Verified Production Capacity & Analytical Testing Matrix
Our 1,250 m² Shaanxi facility operates continuous vacuum concentration towers, multi-stage spray drying, and an in-house analytical testing laboratory equipped with Agilent HPLC and Shimadzu GC systems.
| Analytical Metric | Standard Test Methodology | Acceptance Threshold (EU / USP) | Vexli Factory Batch Guarantee |
|---|---|---|---|
| Active Molecule Assay | HPLC-DAD / UV-Vis Spectrophotometry | Matches pharmacopoeia label claim | Quantitative COA with chromatogram attached to every shipment |
| Pesticide Multi-Residues | GC-MS/MS & LC-MS/MS (BS EN 15662) | EC No 396/2005 & USP <561> limits | Compliant across 500+ screen compounds; zero ETO/anthraquinone |
| Heavy Metals (Pb, As, Cd, Hg) | ICP-MS (Inductively Coupled Plasma Mass) | Pb <3.0 ppm, As <1.0 ppm, Cd <1.0 ppm, Hg <0.1 ppm | Exceeds USP <2232> and California Proposition 65 limits |
| Residual Extraction Solvents | Headspace Gas Chromatography (GC-FID) | USP <467> Class 1, 2, 3 limits | Pure water or food-grade ethanol only; Class 1 & 2 completely excluded |
| Microbiological Parameters | USP <61> & <62> Microbial Enumeration | TPC <10,000 cfu/g; Yeast/Mold <100 cfu/g | Irradiation-free sterilization; negative for E. coli, Salmonella, S. aureus |
| Particle Size & Bulk Density | Air Jet Sieving / Tap Density Meter | 80 to 450+ Mesh per specification | Custom laser diffraction particle control with high solubility yield |
Frequently Asked Questions by Quality Assurance & Purchasing Teams
Direct technical answers addressing commercial trade terms, analytical verification, customization capabilities, and compliance standards.
Q1: What is the Minimum Order Quantity (MOQ) for custom botanical extracts?
For standard stocked botanical concentrates and tea powders (such as ceremonial matcha, water-soluble beetroot powder, instant black tea, and ube powder), our baseline MOQ starts at just 1 kg for R&D trials. For custom solvent ratios, proprietary blend formulations, or customized particle micronization (e.g. >500 mesh), the typical production MOQ is 25 kg to 50 kg (one fiber drum).
Q2: What documentation accompanies each production shipment?
Every commercial batch is accompanied by an authentic, batch-specific Certificate of Analysis (COA) containing exact quantitative test results, complete Specification Data Sheets, Safety Data Sheets (SDS/MSDS) compliant with GHS standards, Flow Charts, and BSE/TSE-free, Allergen-free statements. Third-party testing reports (SGS, Eurofins) are provided upon request.
Q3: Can you match an existing specification or benchmark sample from another supplier?
Yes. Our R&D formulation laboratory specializes in reverse engineering and exact specification matching. You can provide your target technical parameters—such as color value (E-value), bulk density, HPLC active marker percentage, solubility speed, or mesh size—or mail a physical sample. We formulate a pilot batch and return a matched counter-sample with comparative testing data.
Q4: How does Xi'an Vexli ensure compliance with US and EU heavy metal regulations?
We implement a strict dual-testing protocol. Raw botanical feedstocks are screened via ICP-MS at the harvesting stage. Post-concentration and drying, finished lots are re-tested to ensure total heavy metals (Lead, Arsenic, Cadmium, Mercury) strictly comply with EU Commission Regulation (EC) No 1881/2006, USP <2232>, and California Proposition 65 settlement limits.
Q5: What OEM packaging and private label formats do you provide?
We provide end-to-end contract packaging services. Bulk packaging consists of double-lined food-grade polyethylene bags sealed inside 25 kg fiber drums. For retail-ready private label projects, we supply nitrogen-flushed printed standing pouches, aluminum tin cans, single-serve sachet sticks (1 g to 15 g), and customized external outer retail display cartons.
Q6: Which international trade terms and payment mechanisms are supported?
We support all primary Incoterms 2020 including EXW, FOB, CFR, CIF, FCA, and DDP (Delivered Duty Paid directly to your facility, with import customs and tariffs fully handled by our shipping agent). Accepted payment methods include T/T wire transfer, Irrevocable L/C at sight, D/P, PayPal, and credit card, settled in USD, EUR, GBP, AUD, CAD, JPY, or CNY.
Q7: How do you solve caking issues in water-soluble hygroscopic extracts?
Certain high-sugar or high-polysaccharide extracts (such as beetroot juice powder and mushroom extracts) are naturally prone to moisture absorption. We utilize advanced vacuum freeze-drying or low-temperature spray drying with clean-label carrier matrixing, combined with hermetically sealed aluminum moisture-barrier foil packaging under climate-controlled cleanroom conditions (<40% RH).
Q8: Are pre-shipment samples available before placing a commercial bulk contract?
Yes, we provide 50 g to 200 g pre-shipment evaluation samples to qualified B2B buyers, research institutes, and contract manufacturing organizations. Samples allow your formulation, analytical QA, and sensory teams to verify solubility, clarity, HPLC active compound recovery, and taste profiles prior to committing to production volume contracts.