Featured Standardized Extract Formulations & Hard Capsules
Direct from our GMP cleanroom workshops in Xi'an. Complete third-party analytical release, assayed active markers, and turnkey custom private label options with low trial minimums.
Shaanxi ESNO Biotech: 19 Years of Contract Botanical Manufacturing
Established in 2006 in Xi'an—the epicenter of botanical raw material extraction in Asia—Shaanxi ESNO Biotech Co., Ltd. operates state-of-the-art cGMP facilities audited by NSF International and certified under ISO 22000 and HACCP. We convert crude subterranean roots and botanical rhizomes into pharmaceutical-grade encapsulated, tableted, and powdered finished formulations.
Engineering Bioactive Integrity: Advanced Separation & Standardization of Root Matrices
Subterranean plant organs—encompassing taproots, tuberous roots, rhizomes, and corms—represent the most biochemically dense repositories of plant secondary metabolites. Unlike aerial botanical tissue, root matrices are characterized by heavily lignified vascular structures, complex hydrophilic polysaccharides, and concentrated lipophilic triterpenoids or steroidal saponins. Extracting and stabilizing these delicate phytochemicals requires stringent thermodynamic control and clean-solvent engineering to avoid thermolabile degradation.
1. Multi-Stage Fractionation & Supercritical Fluid Dynamics
At ESNO Biotech, standardizing complex root profiles like Yucca schidigera saponins, Ashwagandha withanolides, and Panax ginsenosides mandates clean-label extraction. We employ automated closed-loop stainless steel (316L) solid-liquid extraction batteries operating under counter-current extraction (CCE) protocols. For lipophilic components, we utilize dense carbon dioxide (Supercritical CO₂) pressurized between 200 and 350 bar at moderate physiological temperatures (35°C–45°C), utilizing organic ethanol as a food-grade co-solvent to modulate dielectric constants.
This non-thermal separation prevents the cleavage of sensitive ester bonds and glycosidic side chains. Subsequent macroporous adsorptive resin columns (such as D101 and AB-8) isolate targeted saponin fractions while selectively flushing heavy metals and inorganic soil residues to concentrations far below United States Pharmacopeia (<232>/<233>) and European Pharmacopoeia (EP 2.8.13) maximum thresholds.
| Botanical Root Extraction Technology | Solvent Vehicle Matrix | Operating Temperature | Solvent Residue Compliance | Phytochemical Yield & Isomer Integrity |
|---|---|---|---|---|
| Counter-Current Hydro-Ethanolic CCE | Food-Grade USP EtOH / Pure RO H₂O | 45°C – 60°C | < 50 ppm (ICH Q3C Class 3 Limit: 5,000 ppm) | High-titer total saponins and polyphenol retention |
| Supercritical CO₂ Fluid Extraction (SFE) | Pure CO₂ with EtOH Entrainer (<5%) | 35°C – 42°C | Zero Residual Organic Solvents (Pure Gas Evaporation) | Preserves volatile root terpenes and delicate lactones |
| Subcritical Water Extraction (SWE) | De-aerated Ultra-Purified Water | 100°C – 140°C (Pressurized) | Zero Chemical Residues (100% Water Only) | Optimized for highly polar root polysaccharides |
| Enzymatic Hydrolysis Separation | Pectinase / Cellulase Aqueous Medium | 38°C – 48°C | Zero Residues, Enzyme Inactivated via Heat Flash | Increases release of intracellular trapped glycones |
2. Chromatographic Fingerprinting & Validated Release Criteria
A fundamental vulnerability in international root extract procurement is species misidentification and economically motivated adulteration. As an audited manufacturer, Shaanxi ESNO Biotech verifies every crude botanical consignment arriving at our warehouse prior to batch quarantine release.
We leverage High-Performance Thin-Layer Chromatography (HPTLC) alongside High-Performance Liquid Chromatography coupled with Diode Array Detection and Mass Spectrometry (HPLC-DAD-MS). This multi-spectrum verification validates that chromatographic elution retention times precisely correlate with certified USP reference standards. Whether establishing Silymarin isomer ratios (Silybin A, Silybin B, Isosilybin A, Isosilybin B) or confirming the absence of unauthorized subterranean fillers, our certificates of analysis deliver bulletproof regulatory compliance.
Future Procurement Trends in Botanical Extracts & Private Label Supplements
The global dietary supplement procurement landscape is undergoing seismic structural shifts driven by updated FDA FSMA 204 traceability rules, rigorous European EFSA novel food protocols, and surging clean-label consumer sentiment.
Integrated Cleanroom Manufacturing Capabilities
We provide complete vertical integration from subterranean raw material extraction to secondary retail-ready packaging. Our 100,000-class cleanrooms prevent cross-contamination while preserving physical stability.
Capsule & Tableting Operations
Class 100k GMP- ✓ High-Speed Encapsulation: Precision dosing for vegetarian HPMC, Pullulan, and bovine gelatin capsules (sizes 000, 00, 0, 1, 2, 3, 4).
- ✓ Rotary Tablet Compression: Custom embossing, chewable, effervescent, and bi-layer multi-release configurations.
- ✓ Aqueous Film Coating: Taste masking, moisture-barrier enteric coatings, and natural mineral color systems.
Gummies, Powders & Stick Packs
Automated Servo Lines- ✓ Custom Pectin Gummies: Gelatin-free, heat-stable, 100% vegan pectin bases with zero artificial food dyes or corn syrups.
- ✓ Precision Stick Pack Sachets: Nitrogen-flushed moisture barrier foil packaging for hydro-soluble root powders and electrolyte premixes.
- ✓ Shilajit & Botanical Resins: Specialized hot-pour viscous resin dosing with hermetic induction seals.
On-Site Analytical Laboratory
ISO 17025 Compliant QC- ✓ Heavy Metal Detection (ICP-MS): Lead, Arsenic, Cadmium, and Mercury quantitated to parts-per-billion (< 0.05 ppm).
- ✓ Pesticide Multi-Residue Screen: GC-MS/MS and LC-MS/MS testing covering 500+ organochlorine and organophosphate pesticides (USP <561>).
- ✓ Microbial Limit Enumeration: Rapid bioluminescent screening for total aerobic plate count, yeast/mold, E. coli, and Salmonella.
Critical Technical & Operational Inquiries for Global Buyers
Straightforward answers addressing raw material pedigree, compliance dossiers, minimum volume structures, and international supply chain validation.
For verified stock formulations (including standardized botanical root capsules and pure compounds), our MOQ begins at an agile 100 to 500 units, allowing boutique brands to test market viability. For fully bespoke custom contract formulations requiring custom powder granulation, unique botanical ratios, or specialized capsule printing, our MOQ is typically 1,000 to 3,000 bottles (or 100,000 capsules in bulk bulk-pack cartons).
We provide diverse technological delivery vehicles. For hydrophobic terpenes and steroidal saponins, we employ non-GMO sunflower lecithin complexation (phytosomal encapsulation), medium-chain triglyceride (MCT) lipid carrier suspensions in softgels, and self-emulsifying microemulsion technologies that drastically reduce particle agglomeration and facilitate lymphatic absorption.
Every production batch is accompanied by an authenticated Certificate of Analysis (COA) containing exact HPLC/UV assay percentages, heavy metal quantitation by ICP-MS, residual solvent analysis (USP <467>), full microbiological counts, TSE/BSE-free statements, Non-GMO declarations, and country of origin certificates. Third-party inter-laboratory validation (e.g., Eurofins or SGS) is available on demand.
Yes. Our R&D team has completed over 400 proprietary product formulations. We resolve ingredient incompatibility issues—such as mineral-induced catalytic degradation or hygroscopic moisture absorption from dense root saponins—using fluid-bed micro-encapsulation, moisture-scavenging excipients, and enteric capsule delivery systems to guarantee label claim potency throughout a 24-month shelf life.
Initial pilot bench prototyping and custom bench sampling typically take 7 to 10 working days. Upon client sample sign-off, label artwork approval, and primary packaging procurement, bulk mass manufacturing in our GMP cleanrooms takes 3 to 4 weeks. Air freight and expedited maritime shipping corridors are managed seamlessly via our factory export logistics desk.
Absolutely. In addition to our validated on-site factory audit by TÜV Rheinland, we welcome qualified procurement officers, technical quality assurance teams, and third-party auditing bodies (such as UL, NSF, or Intertek) to inspect our cleanrooms, extraction batteries, warehouse facilities, and QC laboratories in Xi'an, Shaanxi.
Accelerate Your Botanical Formulation to Commercial Scale
Consult directly with our formulation scientists and international regulatory compliance specialists. Request free custom pilot samples, batch analytical records, and factory-direct volume pricing today.