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Botanical Extracts

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Rhodiola Rosea Extract Powder

Rhodiola Rosea Extract Powder (Rhodiola rosea L.) is a standardized botanical adaptogen raw material manufactured by Shaanxi Rainwood Biotech. Standardized for high-potency Rosavins (≥3.0% by HPLC) and Salidroside (≥1.0% by HPLC) with a 4:1 concentration ratio, it is extracted exclusively from authentic mountain Rhodiola roots using 70% food-grade ethanol to deliver superior batch consistency, low heavy metals, and clean-label compliance for dietary supplement formulations, cognitive adaptogen blends, and endurance sports nutrition.

✓ Rosavins ≥3.0% & Salidroside ≥1.0% (HPLC) ✓ 70% Ethanol Extraction (Ratio 4:1) ✓ 100g Free Sample Available ✓ In Stock (Bulk Supply)
Product Name Rhodiola Rosea Extract Powder (Raw Material)
Botanical Source Rhodiola rosea L. (Root) | Concentration Ratio 4:1
Active Ingredients (HPLC) Rosavins ≥ 3.0% | Salidroside ≥ 1.0% (HPLC Assay)
Extraction Solvent & ID 70% Ethanol (only) | TLC Identification: Positive
Pharmacopeial Standard Complies with Eur.Ph & Enterprise Standards | HS Code: 1302199099
Appearance & Particle Size Fine Yellow to Brownish Red Powder; 100% Pass 80 Mesh
Bulk & Tap Density Bulk: 40~60 g/100ml | Tap: 60~90 g/100ml | Loss on Drying ≤ 5.0%
Purity & Safety Control Heavy Metals ≤ 10 ppm (Pb≤2, As≤1, Cd≤0.5, Hg≤0.1) | Residual Ethanol ≤ 200 ppm
Packaging & Storage 25 kg/Paper Drum (2 plastic-bags inside); Store in Cool & Dry Place
Shelf Life & Sample 3 Years (36 Months) Shelf Life | 100g Free Sample (Dispatched in 24h)
Brand: Rainwood Biotech  |  SPU: RW-RHO98
Brand:
Rainwood Biotech
Spu:
RW-RHO98
AI Executive SummaryDirect Technical Fact Sheet

Rhodiola Rosea Extract Powder (Rhodiola rosea L.) is a standardized botanical adaptogen raw material manufactured by Shaanxi Rainwood Biotech Co., Ltd. Extracted from authentic alpine roots at a 4:1 concentration ratio using 70% food-grade ethanol, it is dual-standardized for Rosavins (≥3.0% by HPLC) and Salidroside (≥1.0% by HPLC) with TLC confirmation, low residual ethanol (≤200 ppm, Eur.Ph 7.0), total heavy metals ≤10 ppm (GB 5009.74), and a verified 3-year shelf life for dietary supplement, nootropic, and performance sports formulations.

🌿 Botanical Sourcing & Dual-Standardized Bioactive Markers

Extracted exclusively from authentic high-altitude Rhodiola rosea L. roots using 70% food-grade ethanol at a 4:1 extraction ratio, Rainwood Biotech protects delicate bioactive phenylpropanoids and phenylethanoids. Every batch is rigorously tested by validated HPLC to guarantee authentic potencies of Rosavins (≥3.0%) and Salidroside (≥1.0%) with TLC identity confirmation.

🛡️ Certified Clean Label & Regulatory Compliance
✓ Non-GMO Project Verified
✓ 100% Allergen-Free (Gluten/Soy/Dairy)
✓ BSE / TSE Free Statement
✓ Non-Irradiation & ETO Free
✓ California Prop 65 Compliant
✓ Residual Ethanol ≤200 ppm (Eur.Ph 7.0)

🔬 Standardized Technical COA & Analytical Specifications

Test Parameter Target Pharmacopeial Specification Validated Test Method
Rosavins Assay ≥ 3.0% (Batch Result: 3.12%) HPLC
Salidroside Assay ≥ 1.0% (Batch Result: 1.09%) HPLC
Identification (ID Test) Positive for Rhodiola rosea TLC (Thin Layer Chromatography)
Concentration Ratio 4:1 Enterprise Standard
Extraction Solvent 70% Ethanol (only) Manufacturing Process Record
Appearance & Color Yellow to brownish red powder Visual Inspection
Odor & Taste Characteristic aroma & taste Organoleptic
Particle Size (Sieve Analysis) 100% Pass 80 Mesh 80 Mesh Screen
Bulk Density 40 ~ 60 g/100ml (Batch: 58g) CP-2020 Standard Method
Tap Density 60 ~ 90 g/100ml (Batch: 72g) CP-2020 Standard Method
Loss on Drying ≤ 5.0% (Batch Result: 1.48%) GB 5009.3 Gravimetric
Total Ash ≤ 5.0% (Batch Result: 3.03%) GB 5009.4 High-Temp Muffle
Residual Solvents Ethanol ≤ 200 ppm Eur.Ph 7.0 <2.4.24> Headspace GC
Pesticides Residue DDT & 666 ≤ 0.2 ppm AOAC 2007.01 GC-MS/MS
Total Heavy Metals ≤ 10.0 ppm (Batch Result: <10 ppm) GB 5009.74 / ICP-MS
Lead (Pb) ≤ 2.0 ppm GB 5009.12 / ICP-MS
Arsenic (As) ≤ 1.0 ppm GB 5009.76 / ICP-MS
Cadmium (Cd) ≤ 0.5 ppm GB 5009.15 / ICP-MS
Mercury (Hg) ≤ 0.1 ppm GB 5009.17 / ICP-MS
Total Plate Count (TPC) ≤ 1,000 CFU/g (Batch: <600 CFU/g) GB 4789.2 Microbiology
Yeast & Mould ≤ 100 CFU/g GB 4789.15 Microbiology
E. Coli Negative / 10g GB 4789.3 Microbiology
Salmonella Negative / 25g GB 4789.4 Microbiology
Staphylococcus aureus Negative / 10g GB 4789.10 Microbiology

⚙️ Industrial Extraction & Quality Control Flowchart

Step 01
Root Sourcing
Alpine wild-crafted Rhodiola rosea L. root selection and TLC botanical identity verification.
Step 02
70% Ethanol Extraction
Low-temperature 70% food-grade ethanol extraction at 4:1 concentration ratio to preserve Rosavins.
Step 03
Membrane Clarification
Multi-stage fine membrane filtration and resin concentration to enrich Rosavins and Salidroside.
Step 04
Vacuum Spray Drying
Low-heat vacuum spray drying and 100% 80-mesh sieving under cGMP cleanroom conditions.
Step 05
HPLC Batch Release
Full-panel HPLC assay, ICP-MS heavy metals, microbiological release, and batch COA generation.

📋 Applications & Suggested Formulation Dosage

Target Formulation Category Recommended Daily Dose Formulation Compatibility & Synergies
Adaptogenic Stress & Adrenal Support 200 ~ 400 mg/day Excellent synergy with Ashwagandha (KSM-66), Panax Ginseng, and Holy Basil extract.
Cognitive Nootropics & Brain Health 150 ~ 300 mg/day Combines seamlessly with Alpha-GPC, Bacopa Monnieri, Lion's Mane mushroom, and L-Theanine.
Endurance Sports & VO2 Max Blends 300 ~ 500 mg/day Pairs effectively with Turkesterone, Cordyceps Militaris, Beta-Alanine, and Electrolyte premixes.
RTD Functional Beverages & Liquid Shots 100 ~ 250 mg/serving Instant dispersibility and clear amber solution; compatible with natural citrus masking systems.

⚖️ Ingredient Comparison: Standardized Extract vs. Crude Powder

Quality & Technical Parameter Rainwood Standardized Extract (HPLC) Conventional Crude Rhodiola Powder
Bioactive Potency Rosavins ≥3.0% + Salidroside ≥1.0% (HPLC) Unstandardized / Trace (<0.5%)
Concentration Ratio 4:1 Concentrated Ratio 1:1 (Raw ground root fibers)
Extraction Solvent 70% Food-Grade Ethanol (Eur.Ph Compliant) None (Milled whole root)
Solvent Residues Ethanol ≤ 200 ppm (Eur.Ph 7.0 <2.4.24>) Unregulated
Heavy Metals & Safety Total Heavy Metals ≤ 10 ppm (GB 5009.74) High risk of soil heavy metal contamination
Shelf Life 36 Months (3 Years) Stable Potency 12 ~ 18 Months (Rapid degradation)

❓ Technical & Procurement FAQ

Q1: What is the verified bioactive assay of Rainwood's Rhodiola Rosea Extract?
Our standard production batch (Ratio 4:1) is guaranteed for Rosavins ≥ 3.0% (batch result: 3.12%) and Salidroside ≥ 1.0% (batch result: 1.09%) by HPLC, with TLC botanical identity confirmation.
Q2: What extraction solvent is used during manufacturing?
We use exclusively 70% food-grade ethanol as the extraction solvent. No toxic Class 1 or 2 organic solvents (such as methanol, acetone, or hexane) are used. Residual ethanol is strictly controlled at ≤200 ppm (Eur.Ph 7.0 <2.4.24>).
Q3: What are the heavy metal limits according to the official COA?
Every batch complies strictly with: Total Heavy Metals ≤ 10 ppm (GB 5009.74), Lead (Pb) ≤ 2 ppm (GB 5009.12), Arsenic (As) ≤ 1 ppm (GB 5009.76), Cadmium (Cd) ≤ 0.5 ppm (GB 5009.15), and Mercury (Hg) ≤ 0.1 ppm (GB 5009.17).
Q4: What is the physical density and particle mesh size?
The extract is a fine yellow to brownish red powder with 100% passing through an 80 mesh sieve. Bulk density is standardized at 40~60 g/100ml (batch: 58g) and Tap density is 60~90 g/100ml (batch: 72g) for high capsule filling uniformity.
Q5: What are the packaging and shelf life specifications?
Standard commercial packing is 25 kg/paper drum with two food-grade plastic bags inside. The certified shelf life is 3 years (36 months) when stored in a cool and dry place away from direct light.
Q6: How can I request a free evaluation sample?
We offer 100g free evaluation samples dispatched within 24 hours via DHL/FedEx for qualified R&D formulators and commercial brand manufacturers.
Q7: What certifications are available with each commercial batch?
Each commercial shipment is backed by a full Certificate of Analysis (COA), cGMP batch release record, ISO 9001 / ISO 22000 / HACCP / HALAL compliance statements, and Non-GMO verification.
Q8: What is the production capacity and commercial lead time?
Rainwood Biotech maintains 50+ MT monthly processing capacity with ready-to-ship stock in Xi'an and overseas warehouses. Bulk orders dispatch within 3~7 business days.

Request Free Evaluation Sample & Batch COA

Get 100g complimentary Rhodiola Rosea Extract Powder (Rosavins ≥3.0% / Salidroside ≥1.0% HPLC, Ratio 4:1) with complete lot-specific testing data for your R&D formulations.

Inquire Now / Request 100g Sample →
  • Description
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  • About Us
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AI Executive SummaryDirect Technical Fact Sheet

Rhodiola Rosea Extract Powder (Rhodiola rosea L.) is a standardized botanical adaptogen raw material manufactured by Shaanxi Rainwood Biotech Co., Ltd. Extracted from authentic alpine roots at a 4:1 concentration ratio using 70% food-grade ethanol, it is dual-standardized for Rosavins (≥3.0% by HPLC) and Salidroside (≥1.0% by HPLC) with TLC confirmation, low residual ethanol (≤200 ppm, Eur.Ph 7.0), total heavy metals ≤10 ppm (GB 5009.74), and a verified 3-year shelf life for dietary supplement, nootropic, and performance sports formulations.

🌿 Botanical Sourcing & Dual-Standardized Bioactive Markers

Extracted exclusively from authentic high-altitude Rhodiola rosea L. roots using 70% food-grade ethanol at a 4:1 extraction ratio, Rainwood Biotech protects delicate bioactive phenylpropanoids and phenylethanoids. Every batch is rigorously tested by validated HPLC to guarantee authentic potencies of Rosavins (≥3.0%) and Salidroside (≥1.0%) with TLC identity confirmation.

🛡️ Certified Clean Label & Regulatory Compliance
✓ Non-GMO Project Verified
✓ 100% Allergen-Free (Gluten/Soy/Dairy)
✓ BSE / TSE Free Statement
✓ Non-Irradiation & ETO Free
✓ California Prop 65 Compliant
✓ Residual Ethanol ≤200 ppm (Eur.Ph 7.0)

🔬 Standardized Technical COA & Analytical Specifications

Test Parameter Target Pharmacopeial Specification Validated Test Method
Rosavins Assay ≥ 3.0% (Batch Result: 3.12%) HPLC
Salidroside Assay ≥ 1.0% (Batch Result: 1.09%) HPLC
Identification (ID Test) Positive for Rhodiola rosea TLC (Thin Layer Chromatography)
Concentration Ratio 4:1 Enterprise Standard
Extraction Solvent 70% Ethanol (only) Manufacturing Process Record
Appearance & Color Yellow to brownish red powder Visual Inspection
Odor & Taste Characteristic aroma & taste Organoleptic
Particle Size (Sieve Analysis) 100% Pass 80 Mesh 80 Mesh Screen
Bulk Density 40 ~ 60 g/100ml (Batch: 58g) CP-2020 Standard Method
Tap Density 60 ~ 90 g/100ml (Batch: 72g) CP-2020 Standard Method
Loss on Drying ≤ 5.0% (Batch Result: 1.48%) GB 5009.3 Gravimetric
Total Ash ≤ 5.0% (Batch Result: 3.03%) GB 5009.4 High-Temp Muffle
Residual Solvents Ethanol ≤ 200 ppm Eur.Ph 7.0 <2.4.24> Headspace GC
Pesticides Residue DDT & 666 ≤ 0.2 ppm AOAC 2007.01 GC-MS/MS
Total Heavy Metals ≤ 10.0 ppm (Batch Result: <10 ppm) GB 5009.74 / ICP-MS
Lead (Pb) ≤ 2.0 ppm GB 5009.12 / ICP-MS
Arsenic (As) ≤ 1.0 ppm GB 5009.76 / ICP-MS
Cadmium (Cd) ≤ 0.5 ppm GB 5009.15 / ICP-MS
Mercury (Hg) ≤ 0.1 ppm GB 5009.17 / ICP-MS
Total Plate Count (TPC) ≤ 1,000 CFU/g (Batch: <600 CFU/g) GB 4789.2 Microbiology
Yeast & Mould ≤ 100 CFU/g GB 4789.15 Microbiology
E. Coli Negative / 10g GB 4789.3 Microbiology
Salmonella Negative / 25g GB 4789.4 Microbiology
Staphylococcus aureus Negative / 10g GB 4789.10 Microbiology

⚙️ Industrial Extraction & Quality Control Flowchart

Step 01
Root Sourcing
Alpine wild-crafted Rhodiola rosea L. root selection and TLC botanical identity verification.
Step 02
70% Ethanol Extraction
Low-temperature 70% food-grade ethanol extraction at 4:1 concentration ratio to preserve Rosavins.
Step 03
Membrane Clarification
Multi-stage fine membrane filtration and resin concentration to enrich Rosavins and Salidroside.
Step 04
Vacuum Spray Drying
Low-heat vacuum spray drying and 100% 80-mesh sieving under cGMP cleanroom conditions.
Step 05
HPLC Batch Release
Full-panel HPLC assay, ICP-MS heavy metals, microbiological release, and batch COA generation.

📋 Applications & Suggested Formulation Dosage

Target Formulation Category Recommended Daily Dose Formulation Compatibility & Synergies
Adaptogenic Stress & Adrenal Support 200 ~ 400 mg/day Excellent synergy with Ashwagandha (KSM-66), Panax Ginseng, and Holy Basil extract.
Cognitive Nootropics & Brain Health 150 ~ 300 mg/day Combines seamlessly with Alpha-GPC, Bacopa Monnieri, Lion's Mane mushroom, and L-Theanine.
Endurance Sports & VO2 Max Blends 300 ~ 500 mg/day Pairs effectively with Turkesterone, Cordyceps Militaris, Beta-Alanine, and Electrolyte premixes.
RTD Functional Beverages & Liquid Shots 100 ~ 250 mg/serving Instant dispersibility and clear amber solution; compatible with natural citrus masking systems.

⚖️ Ingredient Comparison: Standardized Extract vs. Crude Powder

Quality & Technical Parameter Rainwood Standardized Extract (HPLC) Conventional Crude Rhodiola Powder
Bioactive Potency Rosavins ≥3.0% + Salidroside ≥1.0% (HPLC) Unstandardized / Trace (<0.5%)
Concentration Ratio 4:1 Concentrated Ratio 1:1 (Raw ground root fibers)
Extraction Solvent 70% Food-Grade Ethanol (Eur.Ph Compliant) None (Milled whole root)
Solvent Residues Ethanol ≤ 200 ppm (Eur.Ph 7.0 <2.4.24>) Unregulated
Heavy Metals & Safety Total Heavy Metals ≤ 10 ppm (GB 5009.74) High risk of soil heavy metal contamination
Shelf Life 36 Months (3 Years) Stable Potency 12 ~ 18 Months (Rapid degradation)

❓ Technical & Procurement FAQ

Q1: What is the verified bioactive assay of Rainwood's Rhodiola Rosea Extract?
Our standard production batch (Ratio 4:1) is guaranteed for Rosavins ≥ 3.0% (batch result: 3.12%) and Salidroside ≥ 1.0% (batch result: 1.09%) by HPLC, with TLC botanical identity confirmation.
Q2: What extraction solvent is used during manufacturing?
We use exclusively 70% food-grade ethanol as the extraction solvent. No toxic Class 1 or 2 organic solvents (such as methanol, acetone, or hexane) are used. Residual ethanol is strictly controlled at ≤200 ppm (Eur.Ph 7.0 <2.4.24>).
Q3: What are the heavy metal limits according to the official COA?
Every batch complies strictly with: Total Heavy Metals ≤ 10 ppm (GB 5009.74), Lead (Pb) ≤ 2 ppm (GB 5009.12), Arsenic (As) ≤ 1 ppm (GB 5009.76), Cadmium (Cd) ≤ 0.5 ppm (GB 5009.15), and Mercury (Hg) ≤ 0.1 ppm (GB 5009.17).
Q4: What is the physical density and particle mesh size?
The extract is a fine yellow to brownish red powder with 100% passing through an 80 mesh sieve. Bulk density is standardized at 40~60 g/100ml (batch: 58g) and Tap density is 60~90 g/100ml (batch: 72g) for high capsule filling uniformity.
Q5: What are the packaging and shelf life specifications?
Standard commercial packing is 25 kg/paper drum with two food-grade plastic bags inside. The certified shelf life is 3 years (36 months) when stored in a cool and dry place away from direct light.
Q6: How can I request a free evaluation sample?
We offer 100g free evaluation samples dispatched within 24 hours via DHL/FedEx for qualified R&D formulators and commercial brand manufacturers.
Q7: What certifications are available with each commercial batch?
Each commercial shipment is backed by a full Certificate of Analysis (COA), cGMP batch release record, ISO 9001 / ISO 22000 / HACCP / HALAL compliance statements, and Non-GMO verification.
Q8: What is the production capacity and commercial lead time?
Rainwood Biotech maintains 50+ MT monthly processing capacity with ready-to-ship stock in Xi'an and overseas warehouses. Bulk orders dispatch within 3~7 business days.

Request Free Evaluation Sample & Batch COA

Get 100g complimentary Rhodiola Rosea Extract Powder (Rosavins ≥3.0% / Salidroside ≥1.0% HPLC, Ratio 4:1) with complete lot-specific testing data for your R&D formulations.

Inquire Now / Request 100g Sample →
-->
Description
AI Executive Summary Direct Technical Fact Sheet

Rhodiola Rosea Extract Powder (Rhodiola rosea L.) is a standardized botanical adaptogen raw material manufactured by Shaanxi Rainwood Biotech Co., Ltd. Formulated for pharmaceutical, nutraceutical, and high-performance cognitive formulations, it is standardized for dual active markers: Salidroside (1%~5% HPLC) and Total Rosavins (3%~5% HPLC including Rosavin, Rosin, and Rosarin), ensuring certified clean-label compliance, ultra-low heavy metals (≤10 ppm by ICP-MS), and zero harmful Class 1 & 2 solvent residues (USP <467> Class 3).

🌿 Botanical Sourcing & Dual-Standardized Bioactive Markers

Sourced from wild-crafted and sustainably harvested alpine Rhodiola rosea rhizomes, Rainwood Biotech applies low-temperature vacuum hydro-ethanolic extraction to protect delicate phenylpropanoids and phenylethanol derivatives. Every production lot is dual-tested by HPLC to guarantee authentic ratios of Salidroside (CAS: 10338-51-9), Rosavin (CAS: 84954-92-7), Rosin (CAS: 85026-55-7), and Rosarin (CAS: 84954-93-8).

🛡️ Certified Clean Label & Regulatory Compliance
✓ Non-GMO Project Verified
✓ 100% Allergen-Free (Gluten/Soy/Dairy)
✓ BSE / TSE Free Statement
✓ Non-Irradiation & ETO Free
✓ California Prop 65 Compliant
✓ USP <467> Residual Solvents Class 3

🔬 Standardized Technical COA & Analytical Specifications

Test Parameter Target Pharmacopeial Specification Validated Test Method
Salidroside Content ≥1.0%, ≥2.0%, ≥3.0%, ≥5.0% (Customizable) HPLC (USP / EP Reference)
Total Rosavins Content ≥3.0%~5.0% (Rosavin, Rosin, Rosarin) HPLC (Isocratic Reversed-Phase)
Appearance & Odor Red-Brown to Brown fine powder, characteristic pleasant herbal scent Organoleptic Inspection
Particle Size & Sieve 100% pass 80 Mesh (≥95% pass 100 Mesh) USP <786> Sieve Analysis
Loss on Drying / Moisture ≤5.0% USP <731> (105°C, 2h)
Total Ash Content ≤5.0% USP <561>
Heavy Metals (Total) ≤10.0 ppm (Pb ≤1.0, As ≤1.0, Cd ≤0.5, Hg ≤0.1 ppm) ICP-MS (USP <233>)
Residual Solvents Ethanol ≤5,000 ppm; Methanol & Hexane Not Detected GC-Headspace (USP <467>)
Total Plate Count (TPC) ≤1,000 CFU/g USP <2021>
Yeast & Mold ≤100 CFU/g USP <2021>
Pathogens (E.coli, Salmonella) Negative / 10g (Negative / 25g for Salmonella) USP <2022>

⚙️ Industrial Production & Quality Control Flowchart

Step 01
Wild Raw Sourcing
Authentic Rhodiola rosea root inspection, DNA identification & heavy metal pre-screening.
Step 02
Low-Temp Extraction
Precision hydro-ethanolic extraction protecting bioactive phenylpropanoids.
Step 03
Membrane Purification
Multi-stage ceramic filtration & resin column purification concentrating active Rosavins.
Step 04
Vacuum Spray Drying
Low-heat micro-atomization yielding uniform reddish-brown powder with superior flowability.
Step 05
HPLC Release & QA
Shimadzu HPLC dual-marker assay verification, ICP-MS heavy metals testing & release.

📋 Target Applications & Suggested Dosage Guidelines

Application Category Recommended Dosage Formulation Compatibility & Role
Cognitive & Nootropic Blends 100 ~ 300 mg/day Enhances focus, mental stamina, and neuroprotection synergistic with L-Theanine & Bacopa.
Endurance & Sports Nutrition 200 ~ 500 mg/day Supports cellular oxygen utilization, anti-fatigue performance, and ATP recovery.
Stress Relief & Cortisol Balance 150 ~ 400 mg/day Modulates HPA axis stress response, supporting adrenal wellness and restful mood.
Functional RTD Beverages 50 ~ 200 mg/serving Water dispersible, clean botanical flavor profile for energy and relaxation drinks.

⚖️ Ingredient Comparison: Rainwood Standardized Extract vs. Conventional Crude Powder

Evaluation Parameter Rainwood Standardized Extract (HPLC Dual Assay) Conventional Crude Ground Rhodiola Powder
Bioactive Assay Potency Standardized Salidroside (1%~5%) + Rosavins (3%~5%) Unstandardized, unknown or trace active markers (<0.5%)
Dosage Efficiency High potency: 100~300 mg effective clinical dose Bulky volume: requires 3,000~5,000 mg raw powder
Species Authentication 100% Guaranteed Rhodiola rosea by TLC / HPLC fingerprint High risk of adulteration with Rhodiola crenulata
Heavy Metals & Microbial Ultra-low heavy metals (ICP-MS) & low bioburden Variable bioburden, soil microbial contamination risks

❓ Frequently Asked Questions (Technical & Commercial FAQ)

Q1: How does Rainwood differentiate authentic Rhodiola rosea from Rhodiola crenulata?
Authentic Rhodiola rosea contains both Rosavins (Rosavin, Rosin, Rosarin) and Salidroside, whereas Rhodiola crenulata contains only Salidroside and lacks Rosavins. Rainwood Biotech utilizes HPLC chromatographic fingerprinting to verify both Rosavins (3%~5%) and Salidroside (1%~5%), guaranteeing 100% botanical authenticity.
Q2: What customized specification ratios are available?
We supply standard industry ratios including Rosavins 3% / Salidroside 1%, Rosavins 5% / Salidroside 2%, Pure Salidroside 3%~98%, as well as customized ratios tailored to client formula specifications.
Q3: Is the material compliant with California Proposition 65 heavy metal limits?
Yes. Every production lot undergoes rigorous ICP-MS testing (Pb ≤0.5 ppm, As ≤0.5 ppm, Cd ≤0.2 ppm, Hg ≤0.1 ppm), fully meeting strict California Prop 65 daily intake safety thresholds.
Q4: What extraction solvents are used during manufacturing?
We exclusively use food-grade grain ethanol and purified water. No toxic halogenated or aromatic hydrocarbons (Class 1 & 2) are utilized, with residual ethanol strictly controlled below 5,000 ppm (USP <467>).
Q5: What are the standard packaging configurations?
Our standard B2B packaging is 25 kg/fiber drum with double food-grade polyethylene interior liner bags, or 1 kg aluminum foil barrier bags for R&D sampling and pilot batches.
Q6: What is the sample policy for brand formulators?
We provide 100g complimentary evaluation samples with complete batch-specific COA, dispatched via DHL / FedEx air express within 24 hours of inquiry receipt.
Q7: What is your monthly manufacturing capacity and lead time?
Rainwood Biotech maintains a steady capacity of 30+ Metric Tons per month with standing warehouse inventory in Xi'an. Standard commercial orders ship within 3 to 7 business days.
Q8: Are third-party laboratory verification reports available?
Yes. In addition to our internal Shimadzu HPLC release testing, we routinely provide third-party validation reports from accredited global testing laboratories including Eurofins and SGS.

Request Free Evaluation Sample & Batch COA

Contact our technical sales team for comprehensive HPLC testing monographs, regulatory dossiers, and competitive wholesale volume quotes.

Inquire Now / Request 100g Sample →
Competitive Advantage

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Shaanxi Rainwood Biotech adheres to pharmaceutical-grade manufacturing standards, offering global adaptogenic and cognitive formulation brand owners unmatched technical and commercial advantages:

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01. HPLC Dual-Marker Potency Guarantee (Salidroside + Rosavins)
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Every batch is certified by reversed-phase isocratic HPLC testing for both Salidroside (1%~5%) and Total Rosavins (3%~5%), eliminating market adulteration with unstandardized species.
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02. Sustainably Harvested Alpine Raw Sourcing
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Direct cooperation with wild-crafted harvesting bases in high-altitude alpine regions, ensuring mature roots with peak accumulation of secondary bio-actives.
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03. Clean-Label Hydro-Ethanolic Eco Extraction
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100% free from toxic Class 1 & 2 chemical solvents, utilizing low-temperature vacuum extraction and pure grain alcohol to preserve natural phenylpropanoid structures.
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04. cGMP Facility & Multi-Lot Traceability
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Manufactured under ISO 22000, HACCP, and HALAL certified quality systems with end-to-end electronic lot tracking from raw root harvesting to finished release drum.
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05. Excellent Flowability & Capsule Uniformity
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Consistent 80~100 mesh micro-particle size with optimized bulk density (0.45~0.60 g/mL), ideally suited for high-speed automatic encapsulation and direct compression tableting.
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About Us

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Shaanxi Rainwood Biotech Co., Ltd. (established in 2006) is a premier cGMP-compliant botanical extract manufacturer and standardized raw material supplier headquartered in Xi'an High-Tech Development Zone, Shaanxi, China. We operate an advanced 19-acre manufacturing base equipped with automated continuous extraction lines, vacuum concentration units, membrane separation systems, and class 100,000 cleanrooms.

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2006
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Year Established
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20+ Years Extraction Expertise
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10,000 m²
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Modern Clean Facility
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19-Acre Industrial Base
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3,000+ MT
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Annual Botanical Capacity
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Global Export to 50+ Countries
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🔬 Analytical Testing & Quality Control Center

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Our independent quality control testing center is equipped with high-precision analytical instrumentation including Shimadzu High-Performance Liquid Chromatography (HPLC), Gas Chromatography (GC-MS), UV-Vis Spectrophotometers, Atomic Absorption Spectrometers (AAS), and thin-layer chromatography (TLC) systems. We conduct comprehensive in-house testing for assay purity, pesticide residues, heavy metals, microbial limits, and solvent residues, alongside third-party cross-testing with SGS and Eurofins.

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📜 Certified Quality Management System

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Rainwood Biotech is certified under comprehensive global food safety and quality management standards:

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HACCP Certified
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Food Safety System
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ISO 22000:2018
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Food Safety Management
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\n\"HALAL\n
HALAL Certified
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MUI / ARA Compliance
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ISO 9001:2015
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Quality Management
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Related Products

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Shaanxi Rainwood Biotech manufactures a comprehensive portfolio of standardized botanical adaptogens and vitality-supporting active raw materials. Explore our highly compatible synergistic active ingredients for advanced cognitive, stress-relief, and endurance formulations:

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Synergistic Raw Material Standardized Potency Formulation Synergy & Benefits
Ginseng Extract Powder → Ginsenosides 10%~80% HPLC/UV Classic adaptogen pairing boosting physical stamina, mental clarity, and immune defense.
Turkesterone Powder → Turkesterone 2%~10% HPLC Synergistic athletic performance enhancer supporting ATP generation and muscle recovery.
Icariin Powder (Epimedium) → Icariin 10%~98% HPLC Synergistic blood circulation, nitric oxide synthesis, and vitality tonic complex.
Grape Seed Extract Powder → Proanthocyanidins (OPC) ≥95% Potent antioxidant protection combating exercise-induced oxidative stress.
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