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Dried Goji Powder Wholesale refers to the commercial supply of powdered Lycium barbarum (red goji) berries in large‑quantity packaging, typically 10 kg to 1,000 kg per shipment, intended for food processors, supplement manufacturers, and ingredient distributors. Unlike consumer‑packaged goji powder, wholesale dried goji powder is supplied with specifications focused on processability, shelf‑life stability, and cost‑efficiency rather than retail presentation.
Lycium barbarum has been cultivated in the Ningxia Hui Autonomous Region for over 600 years. Ningxia accounts for approximately 45 % of China’s total goji production (2023 data, China Ministry of Agriculture). The region’s characteristic long sunshine hours (2,900–3,200 h annually) and large day‑night temperature differential (12–15 °C) contribute to higher polysaccharide accumulation—the primary quality marker for dried red goji powder. Ningxia Pure Goji Biology Technology Co., Ltd. sources berries from Yinchuan and Zhongning counties, where the average polysaccharide content in fresh berries is 5.8–7.2 % (dry weight basis), compared to 3.5–4.5 % for berries from other provinces.
Wholesale dried goji powder is typically classified by polysaccharide content and particle size, as these two parameters most directly affect its functional performance in downstream applications. The standard product specification (Product code: DGP‑W‑2024) from Ningxia Pure Goji Biology Technology Co., Ltd. includes:
Physical parameters
Appearance: Yellow‑orange to light red‑brown powder
Particle size: D90 ≤ 150 µm (standard grade); D90 ≤ 75 µm (fine grade, for direct‑compression tablets)
Bulk density (untapped): 0.45–0.52 g/mL
Tapped density: 0.58–0.65 g/mL
Angle of repose: 39–45° (indicating moderate flowability; a glidant such as 0.5 % silicon dioxide is recommended for high‑speed filling)
Moisture content: ≤ 6.5 % (Karl Fischer method)
Water activity (aw): ≤ 0.50
Chemical composition (per 100 g dry powder)
Polysaccharides (phenol‑sulfuric acid): ≥ 20 g (wholesale Grade A); ≥ 15 g (Grade B)
Total sugars (glucose + fructose + sucrose): 45–52 g
Protein (N × 6.25): 10.5–12.5 g
Betaine: 1.0–1.4 g (HPLC‑ELSD)
Zeaxanthin dipalmitate: 180–220 mg (HPLC)
Total dietary fiber: 8.2–10.5 g
Ash: ≤ 7.0 g
Heavy metals (wholesale tolerance is slightly higher than retail due to bulk handling and blending)
Lead: ≤ 0.3 mg/kg
Arsenic: ≤ 0.5 mg/kg
Cadmium: ≤ 0.2 mg/kg
Mercury: ≤ 0.02 mg/kg
Microbiological limits for wholesale
Total aerobic plate count: ≤ 100,000 CFU/g (acceptable for ingredients that will be heat‑treated)
Yeasts and molds: ≤ 1,000 CFU/g
Coliforms: ≤ 100 CFU/g
Salmonella: negative in 25 g
Staphylococcus aureus: negative in 1 g
The drying method used before milling significantly affects both the cost and quality of wholesale dried goji powder. Ningxia Pure Goji Biology Technology Co., Ltd. offers three processing lines with different cost‑quality profiles:
| Drying method | Temperature | Drying time | Polysaccharide retention* | Zeaxanthin retention* | Cost index** |
|---|---|---|---|---|---|
| Hot air (tunnel) | 65 °C | 10–12 h | 68–74 % | 72–78 % | 1.0 |
| Hot air (fluid bed) | 55 °C | 6–8 h | 78–83 % | 80–85 % | 1.3 |
| Vacuum belt | 50 °C/‑80 kPa | 4–5 h | 86–90 % | 87–91 % | 1.9 |
| Freeze drying | –40 °C primary / 25 °C secondary | 24 h + 12 h | 92–95 % | 94–96 % | 3.5 |
*Retention measured relative to fresh berry content, based on in‑house trials 2020–2023.
**Cost index relative to hot‑air tunnel drying (cost = 1.0); includes energy, labor, and equipment amortization.
For wholesale buyers, the most common specification is hot‑air fluid bed‑dried powder (cost index 1.3) because it provides a balance between polysaccharide retention (≈80 %) and affordable pricing. Freeze‑dried powder is typically reserved for premium nutraceutical applications where the wholesale price premium (220–250 % over hot‑air tunnel) is justified by higher bioactivity.
Ningxia Pure Goji Biology Technology Co., Ltd. follows a standardized production protocol for wholesale orders, with in‑process control points documented in each batch record:
Raw material reception: Fresh berries are delivered within 6 h of harvest. Acceptance criteria: soluble solids (Brix) ≥ 22 %, pH 4.8–5.4, and no visible mold. Incoming lot sampling follows ANSI/ASQ Z1.4 (AQL 1.5).
Washing and destemming: Three‑stage flotation washer (water temperature 20±2 °C) removes stems, leaves, and immature berries. Detergent (0.05 % sodium bicarbonate) is used in the first stage; the final rinse uses potable water.
Blanching (optional, for microbial reduction): Steam blanching at 95 °C for 45 seconds. This reduces total plate count by 1.5 log cycles but causes 5–7 % polysaccharide loss. Wholesale buyers may opt out of blanching to preserve polysaccharides; non‑blanched powder requires a longer drying time.
Drying: As specified by the buyer (see section above). Moisture content is monitored online using near‑infrared (NIR) sensors at three positions in the dryer outlet.
Milling: A universal grinder with a 0.8‑mm screen produces powder with D90 ≈ 150 µm. For fine grade, a pin mill with 0.3‑mm screen achieves D90 ≤ 75 µm. Milling is performed at ambient temperature, with a maximum temperature rise of 8 °C measured at the outlet.
Sieving: A gyratory sifter with 80‑mesh (177 µm) or 200‑mesh (74 µm) screens, depending on grade. Oversized particles (>5 % of batch) are reground.
Metal detection: A permanent magnet separator (10,000 Gauss) and a metal detector head with sensitivity ≥ 0.5 mm ferrous, ≥ 1.0 mm non‑ferrous.
Packaging for wholesale: 25 kg multi‑wall kraft bags with internal PE liner (food‑grade, 0.12‑mm thickness), or 20 kg fiber drums with aluminum foil inner liner for extended shelf‑life. Each bag is labeled with batch number, production date, and polysaccharide content.
The wholesale price of dried goji powder is determined by five main factors, based on Ningxia Pure Goji Biology Technology Co., Ltd.’s 2024 cost model for a 5‑metric‑ton lot:
| Cost component | Share of total cost | Notes |
|---|---|---|
| Raw berries (fresh) | 52 % | Price correlates with polysaccharide content; berries at 6.5 % polysaccharides cost 18 % more than berries at 5.0 % |
| Drying (energy + labor) | 18 % | Hot‑air fluid bed: 4.2 kWh per kg powder; freeze drying: 14.5 kWh per kg |
| Milling and sieving | 8 % | Fine grinding (D90 ≤ 75 µm) adds 3 % to cost |
| Packaging (wholesale) | 7 % | Fiber drums: $4.20 per drum (holds 20 kg); kraft bags: $1.80 per bag (holds 25 kg) |
| Quality control & third‑party tests | 6 % | Includes polysaccharide assay, heavy metals, microbiology, and particle size |
| Logistics (warehousing + local transport) | 5 % | Excludes international freight |
| Overhead & margin | 4 % |
The total Ex‑Works (Yinchuan) price for standard hot‑air fluid bed‑dried powder (Grade A, ≥20 g polysaccharides, D90 ≤ 150 µm, 5‑metric‑ton order) is approximately **$11.80–13.50/kg** as of Q2 2024. Fine grade (D90 ≤ 75 µm) adds $1.20–1.50/kg. Freeze‑dried Grade A wholesales at $28.00–32.00/kg for the same quantity.
Volume discounts: 3 % for ≥10 metric tons; 6 % for ≥25 metric tons, with a 12‑month fixed pricing option for annual contracts ≥50 metric tons.
Accelerated stability studies (Arrhenius model, Ea = 58.2 kJ/mol for polysaccharide degradation in goji powder) project the following shelf‑life at various storage temperatures:
| Storage temperature | Relative humidity | Estimated time to 10 % polysaccharide loss | Time to visible caking (≥15 % aggregate) |
|---|---|---|---|
| 5 °C | 30 % | 36 months | >48 months |
| 15 °C | 45 % | 22 months | 28 months |
| 25 °C | 60 % | 12 months | 14 months |
| 35 °C | 75 % | 5 months | 6 months |
Wholesale buyers should aim to store dried goji powder at ≤20 °C and ≤50 % RH. Under these conditions, a 25‑kg kraft bag with PE liner maintains polysaccharide content above 18 g/100 g for 18 months (validated by periodic testing of retained samples from the 2022 production season).
Ningxia Pure Goji Biology Technology Co., Ltd. includes a temperature‑indicating label on each wholesale pallet. If the label exceeds 25 °C for more than 72 cumulative hours, the batch is retested for polysaccharide content before the buyer accepts the shipment.
Based on formulation data from food technology trials conducted between 2021 and 2023, the following use levels are typical for wholesale dried goji powder:
| Application | Addition level (weight of total batch) | Processing consideration |
|---|---|---|
| Nutritional beverage powders | 5–12 % | Dissolves better if blended with 2 % lecithin |
| Breakfast cereals (extruded) | 3–6 % | Add after extrusion as a coating; heat degradation 30–40 % |
| Protein shakes (ready‑to‑mix) | 4–8 % | Use fine grade (D90 ≤ 75 µm) to avoid sedimentation |
| Confectionery (chewable tablets) | 8–15 % | Combine with sorbitol and magnesium stearate; moisture control critical |
| Bakery (bread, cakes) | 2–4 % | Polysaccharide loss 35–50 % at 180 °C baking for 20 min |
| Soup bases and seasonings | 1–3 % | Imparts umami character; use lower addition to avoid color shift |
| Pet treats (extruded) | 2–5 % | Acceptable thermostability at 120 °C for 10 min |
For all applications, the particle size of wholesale dried goji powder affects the final texture. In beverage powders, particles >150 µm produce a “sandy” mouthfeel; 90 % of particles should pass through a 100‑mesh (150 µm) screen, which is standard for food‑grade powder.
Wholesale orders from Ningxia Pure Goji Biology Technology Co., Ltd. are shipped using the following standard configurations:
Less‑than‑container‑load (LCL): 10–20 bags (250–500 kg) on heat‑shrunk pallets, wrapped in stretch film with desiccant sachets (200 g silica gel per pallet).
Full container load (FCL): 20‑ft container holds 400 bags (25 kg each) = 10 metric tons. 40‑ft container holds 880 bags = 22 metric tons.
Reefer container: Temperature set at 15±2 °C, ventilation 20 m³/h. Recommended for ocean freight exceeding 20 days, especially during summer (June–September) when ambient temperatures in the South China Sea average 30–32 °C.
Shipping documentation for each wholesale consignment includes:
Commercial invoice and packing list
Bill of lading
Certificate of Analysis (CoA) for the specific lot
Phytosanitary certificate (for export from China)
Fumigation certificate for wooden pallets (ISPM 15 compliant)
Ningxia Pure Goji Biology Technology Co., Ltd.’s wholesale dried goji powder is produced in a facility that holds:
BRCGS Food Safety (Issue 9, Grade AA)
FSSC 22000 (version 5.1)
Kosher (OU‑Pareve)
Halal (IFANCA‑certified)
Organic (China Organic Standard GB/T 19630, plus EU Organic equivalence for export batches)
Unannounced annual audits are conducted by Bureau Veritas and SGS. The 2023 audit reported zero non‑conformities on food safety prerequisites and a hygiene score of 96.2 %.
Minimum wholesale order: 100 kg (4 bags) for standard Grade B; 500 kg for Grade A organic.
Lead times:
Standard Grade (hot‑air fluid bed, D90 150 µm): 7–10 working days after order confirmation and deposit (30 % advance)
Fine Grade (D90 75 µm) or freeze‑dried: 14–18 working days
Custom blending (e.g., 5 % inulin blend): 20–25 working days, minimum 1 metric ton
Sample policy: Up to 2 kg free sample (shipping cost collected) for qualified wholesale buyers. Samples represent production batches and include a full CoA.
Dried Goji Powder Wholesale is a standardized ingredient with polysaccharide content as the primary quality metric (≥20 g/100 g for Grade A). The drying method—hot‑air, fluid bed, vacuum, or freeze—defines both cost and bioactive retention, with fluid bed‑dried powder offering the most balanced cost‑quality profile for most industrial applications. Ningxia Pure Goji Biology Technology Co., Ltd. supplies wholesale powder with documented shelf‑life (≥18 months at ≤20 °C), full third‑party test results, and packaging tailored to containerized shipping. Volume‑based pricing, custom grinding, and co‑blending services are available for orders starting at 100 kg.
