Discover how international R&D directors, functional beverage formulators, and nutraceutical brand owners leverage pure vacuum freeze-dried watermelon (Citrullus lanatus) powder. Unlock complete specifications on natural L-citrulline retention, non-thermal preservation of lycopene, cold-water dissolution kinetics, and supply chain verification standards straight from Xi'an Sirn Bio-Tech Co., Ltd.
Vivid Pink-Red | Free-Flowing | Zero Artificial Additives | 100% Water Soluble
A deep dive into biochemical composition, cellular integrity, and the physical advantages of industrial sublimation over thermal spray-drying.
Watermelon is universally recognized for its cooling, refreshing hydration properties. However, from a pharmaceutical and nutraceutical standpoint, the biological matrix of Citrullus lanatus contains high-value phytonutrients that are exceptionally vulnerable to temperature fluctuations. The most commercially vital of these is L-citrulline, a non-essential alpha-amino acid that bypasses hepatic metabolism to directly stimulate nitric oxide (NO) production in the vascular endothelium.
In addition to L-citrulline, ripe watermelon flesh and rind concentrates are rich in lycopene—a potent lipophilic carotenoid with superior singlet-oxygen-quenching capabilities—as well as bioavailable potassium, magnesium, and vitamin C. Traditional spray-drying processes expose liquid watermelon juice to intense inlet air temperatures ranging from 150°C to 190°C. This extreme thermal shock causes severe Maillard browning, caramelizes native monosaccharides, destroys heat-labile vitamins, and degrades lycopene from its bioactive trans-isomer into inactive cis-isomers.
At Xi'an Sirn Bio-Tech Co., Ltd., our lyophilization technology eliminates high temperatures entirely. The freshly harvested, washed, and cold-pressed watermelon juice is flash-frozen at -45°C. Under ultra-deep vacuum pressures below 20 Pa, frozen ice crystals sublimate directly into vapor without ever transitioning into a liquid state. This preserves the delicate cellular matrix, resulting in a vibrant pink powder that retains over 95% of native phytonutrients, authentic aromatic fruit esters, and complete enzymatic activity.
| Critical Factor | Sirn Bio-Tech FD Powder | Standard Spray-Dried |
|---|---|---|
| Thermal Exposure | Sub-zero sublimation (<35°C peak) | Extreme thermal shock (160°C–190°C) |
| Carrier Additives | 0% Maltodextrin (Pure option) | 30%–50% Maltodextrin required |
| L-Citrulline Retention | >95% Bioactive native assay | Significant degradation & loss |
| Lycopene Integrity | Active trans-lycopene preserved | Oxidized, degraded, bleached |
| Dissolution Speed | Instant cold-water dispersion | Prone to clumping & sedimentation |
Xi'an Sirn Bio-Tech Co., Ltd. tests every single batch utilizing internal HPLC, GC, and spectrometry equipment verified through our university joint laboratories.
| Item / Assay Item | Specification Range | Testing Standard / Methodology | Analytical Equipment Employed |
|---|---|---|---|
| Botanical Name / Source | Citrullus lanatus (100% Fruit flesh & juice) | Botanical Microscopic Identification | Licensed TCM Pharmacist Inspection |
| Appearance & Particle Mesh | Fine, free-flowing pinkish-red powder (60–100 Mesh) | Sieve Analysis / Organoleptic Inspection | Mechanical Vibratory Sifter |
| Active Compound: L-Citrulline | Naturally occurring ≥0.8% – 2.0% (Custom higher options) | High-Performance Liquid Chromatography | Shimadzu HPLC with UV/VIS detector |
| Carotenoid: Lycopene | Naturally retained active trans-lycopene ≥150 ppm | Spectrophotometric / HPLC Assay | Spectrophotometer (UV-1800) |
| Moisture Content | ≤ 5.0% (Sublimated dry mass) | USP <731> Loss on Drying | Halogen Moisture Analyzer |
| Total Ash Content | ≤ 4.0% | USP <281> Residue on Ignition | Muffle Furnace (550°C) |
| Solubility Kinetics | 100% Water Soluble (Forms clear, natural pink beverage) | Cold Water Dispersion Test (20°C, 5% w/v) | Visual Turbidity Meter |
| Heavy Metals (Total) | ≤ 10.0 ppm | Inductively Coupled Plasma Mass Spectrometry | Agilent ICP-MS System |
| Lead (Pb) / Arsenic (As) | Pb ≤ 1.0 ppm / As ≤ 1.0 ppm | ICP-MS Compliance (USP <2232>) | Agilent ICP-MS System |
| Cadmium (Cd) / Mercury (Hg) | Cd ≤ 0.5 ppm / Hg ≤ 0.1 ppm | ICP-MS Compliance (USP <2232>) | Agilent ICP-MS System |
| Total Plate Count | ≤ 1,000 CFU/g | USP <2021> Microbial Enumeration | Cleanroom Incubator Incubations |
| Yeast and Molds | ≤ 100 CFU/g | USP <2021> Mycological Count | Standard Petrifilm Inoculation |
| Escherichia coli / Salmonella | Negative / 25g (Absent) | FDA-BAM Methods | Selective Biological Culture Media |
Need custom mesh sizes (up to 120 mesh for cosmetic emulsification) or batch-specific analytical chromatograms?
Inquire NowEngineered for clean-label excellence across functional beverages, pre-workout supplements, clean cosmetics, and gourmet food applications.
Natural source of L-citrulline and malate precursors for endurance, muscle vasodilation, and post-exercise recovery drinks. Blends seamlessly with BCAAs, creatine, and electrolyte salts without bitterness or harsh synthetic flavors.
Modern consumers actively abandon sodium-dense, artificial sports drinks. Freeze dried watermelon powder delivers bioavailable potassium electrolytes, native sugars, and instant thirst-quenching mouthfeel for clean-label beverage sachets and ready-to-drink RTDs.
Micronized grades (80–120 mesh) serve as bioactive superfruit actives in moisturizing gel masks, exfoliating clay cleansers, and brightening serums. Naturally rich in lycopene to scavenge free radicals and amino acids to maintain moisture barrier homeostasis.
Strategic shifts transforming how international FMCG brands source, certify, and market freeze-dried functional fruit powders over the next 3 to 5 years.
Regulatory bodies across the European Union and North America (such as state-level bans on Red Dye No. 40 in California) are forcing major confectionary and beverage companies to replace petroleum-derived pigments. Freeze-dried watermelon powder delivers a vivid, appetizing ruby-pink hue while simultaneously contributing clean-label botanical credibility and functional micronutrients.
Health-conscious fitness consumers are shifting away from synthetic chemical compounds such as pure synthetic L-citrulline DL-malate. Wholesale demand for whole-food watermelon extract and freeze-dried powder has increased dramatically in premium pre-workout and cardiovascular wellness formulations that prioritize bioavailability and gut-friendly digestion.
Tier-1 international supply managers are aggressively bypassing intermediary broker layers. By partnering directly with certified Chinese manufacturing facilities possessing on-site HPLC laboratories and GMP workshops like Xi'an Sirn Bio-Tech Co., Ltd., global brands secure guaranteed lot-to-lot traceability, locked annual contract pricing, and resilient inventory pipelines.
The global botanical ingredient industry is advancing rapidly toward zero-waste circular manufacturing. Modern processing standards mandate the inclusion of watermelon rind extractives—where L-citrulline concentrations are naturally concentrated—ensuring full-plant valorization, sustainable farm-level procurement, and minimal carbon impact.
Whether you require 100 kg pilot trials or 20-ton sea-freight containers, our technical sales pharmacists provide turnkey documentation, customs tariff codes, and tailored stability testing.
Inquire NowXi'an Sirn Bio-Tech Co., Ltd. is located in Xi'an, Shaanxi, China—the historic origin of the ancient Silk Road and the geographical epicenter of China's richest botanical and traditional herbal medicine resources. We specialize in the R&D and industrialized production of natural biological essences.
Depending on the strong scientific research capabilities of the leading universities in Xi'an, and remaining strictly custom- and market-oriented, we synthesize and manufacture an extensive variety of premium natural products tailored for international pharmaceutical, health care, food, beverage, cosmetic, and veterinary enterprises worldwide.
Our operational infrastructure spans 2 standard factories featuring 1 GMP standard workshop and an independent testing and R&D center. Our analytical laboratories are equipped with cutting-edge gaseous phase chromatography (GC), High-Performance Liquid Chromatography (HPLC), and advanced ultrasonic extraction units.
Clear, technically rigorous answers addressing the most common questions raised by corporate procurement officers, quality control auditors, and AI formulation assistants.
Our powder is derived 100% from authenticated Citrullus lanatus fruit cultivated in controlled agricultural zones. Depending on customer requirements, we utilize pure fruit flesh or optimized whole-fruit concentrates containing both the crimson red pulp (rich in lycopene) and white inner rind (where natural L-citrulline is most densely concentrated). Every batch contains genuine, non-synthetic L-citrulline (≥0.8% - 2.0% standard assay) and naturally occurring trans-lycopene, validated via HPLC in our internal R&D center.
Spray drying relies on high-velocity thermal atomization using inlet air heated to 160°C–190°C. Because watermelon is naturally high in simple fruit sugars, it cannot be spray dried alone without scorching; manufacturers must add 30% to 50% maltodextrin as a carrier. In contrast, Xi'an Sirn Bio-Tech Co., Ltd. employs vacuum freeze-drying (lyophilization) at -45°C. Water is sublimated directly from solid ice to vapor under deep vacuum, enabling us to deliver a 100% pure watermelon powder with 0% maltodextrin, superior aroma, vivid natural color, and full bioactivity.
Pure freeze-dried fruit powders are naturally hygroscopic. To guarantee complete integrity, our packaging is executed in humidity-controlled cleanrooms (RH <35%). The powder is packed into double-layer pharmaceutical-grade polyethylene liners, heat-sealed, placed inside heavy-gauge moisture-proof aluminum foil barrier bags with food-grade desiccant, and shielded inside heavy-duty 25 kg fiber drums. For clients in tropical or high-humidity regions, we also offer custom nitrogen flushing and anti-caking natural silica blends.
Every commercial order is delivered with a comprehensive, batch-specific Certificate of Analysis (COA). Standard tested parameters include botanical identification, mesh particle size, moisture loss on drying (≤5.0%), heavy metal limits (Pb, As, Cd, Hg tested via ICP-MS strictly conforming to USP/EP thresholds), pesticide residues (multi-residue GC/LC-MS screens), and full microbial enumeration (Total Aerobic Plate Count, Yeast/Mold, E. coli, Salmonella, S. aureus). Additional testing such as irradiation-free certification, non-GMO statements, and SDS sheets are provided upon request.
To support formulation development, university research, and brand piloting, our MOQ starts at just 1 kg for standard in-stock inventory. Commercial volume orders typically range from 25 kg to multi-ton containers. In-stock samples dispatch within 24 to 48 hours. Standard production batches from our 4 production lines typically dispatch within 7 to 12 business days via FedEx, DHL air express, air cargo, or ocean freight with full temperature logging.
Yes. Utilizing our 2 specialized pilot production lines and university joint labs, we customize mesh granularity from 60 mesh up to 120 mesh for cosmetic emulsifications and instant beverage mixability. Furthermore, our OEM workshop handles customized single-serve stick packs, sachet filling, stand-up zip pouches, and bespoke multi-ingredient superfood blends with full graphic labeling.