Harvest
01Incorrect harvester settings can create significant skin damage. Harvesting when soil temperature is below 9°C can cause chilling injury or a hard internal core.
Current specifications available on request
Purple Sweet Potato supply for B2B buyers
Fresh purple-fleshed sweet potato (Ipomoea batatas). Skin colour, flesh colour and cultivar must be confirmed separately for each lot.
Meicun coordinates purple sweet potato procurement for professional buyers, including crop and lot confirmation, grading, packing, quality checks and applicable export documentation.
- Typical buyers
- Importers, processors, distributors and food-service buyers
- Availability
- Available from current crop or cured/stored lots, subject to lot inspection and stock confirmation.
Indicative Procurement Specification
Typical export specifications and storage guidance are shown below. Final product specifications are confirmed against the current crop, selected lot, packing method, destination requirements and written quotation.
Final specifications are confirmed in the written quotation.
- Product type / commercial options
- Fresh purple-fleshed sweet potato (Ipomoea batatas). Skin colour, flesh colour and cultivar must be confirmed separately for each lot.
- Grade and size
- Grade I and Grade II programs may be defined by individual weight and skin appearance. Common selections are 100–250 g, 250–400 g and 400 g+. Where UNECE requirements are specified, the minimum commercial weight is generally 80 g. The final grade, skin tolerance and size range are confirmed in writing.
- Packing
- Common programs include 5 kg or 10 kg ventilated cartons, inner mesh bags and individual protective sleeves for selected orders. An indicative 5 kg carton is approximately 40 × 28 × 18 cm. Exact pack count, cushioning and ventilation are confirmed for the destination.
- Origin & growing conditions
- Typical programs may be coordinated from Shandong, Yunnan or Guangxi. The supplied product profile identifies loose sandy loam in the old Yellow River course and pH 5.5–6.5 as favourable conditions. Actual origin, cultivar and field information are confirmed for the selected lot.
- Sorting requirements
- Harvest and handling equipment should use rubber buffering to reduce skin injury. Manual inspection removes roots with insect holes, black scarring, severe rust-like lesions, cuts or major deformation. Size and skin appearance are checked against the agreed grade.
- Quality-control details
- Inspection should cover individual weight, skin and flesh colour, cultivar, shape, abrasion, insect damage, black scarring, severe surface lesions, decay and net weight. A curing program may use approximately 30–32°C and 90% relative humidity for 48 hours, with ventilation and ethylene management to limit sprouting. Final process conditions depend on the lot.
- Crop season
- Harvest timing varies by production region. The crop month, crop year and origin should be confirmed for each lot instead of publishing one fixed national season.
- Availability
- Available from current crop or cured/stored lots, subject to lot inspection and stock confirmation.
- MOQ
- Normally one full container load (FCL).
- Pallet & loading
- Indicative loading is approximately 20 metric tons per container. Final loading depends on carton size, pallet use and legal payload.
- Storage
- Recommended storage: approximately 12.5–15°C and above 90% relative humidity. Sweet potatoes are chilling-sensitive and should not be kept below 12.5°C for prolonged periods.
- Shelf life
- Potential storage life is approximately 4–7 months after suitable curing and under properly managed storage. Actual life depends on cultivar, curing, damage, crop age and selected lot.
- Inspection
- Pre-shipment inspection scope should include agreed size, grade, colour, maturity, firmness, decay, pest damage, mechanical damage, net weight, packing and labelling. Buyer or third-party inspection may be arranged by agreement.
- Traceability & QA
- Each shipment lot or batch should be linked to the growing or collection area, harvest or receiving date, packing facility, packing date and release inspection. Residue, microbiological or laboratory testing should be provided only when required by the destination market or agreed contract.
- Export documents
- Commercial invoice, packing list, bill of lading or transport document and certificate of origin. A phytosanitary certificate should be provided when required by the importing country. Fumigation, treatment, laboratory or inspection certificates should be supplied only when applicable and agreed.
- Destination requirements
- The buyer must confirm import permits, phytosanitary requirements, additional declarations, pesticide maximum residue limits (MRLs), label language, carton markings and wood-packaging requirements.
- Quote requirements
- Please provide the required product type, grade, size, preparation condition, quantity, packing, destination port, Incoterm, delivery window, container type and any required certificates or laboratory tests.
Harvest to delivery
Common quality risks and prevention checkpoints
These are practical inspection risks to control during procurement and logistics; they do not mean the selected lot has these defects. Acceptance limits and preventive actions are confirmed in the written specification.
Sorting
02Packing without curing leaves wounds unsealed. Washed roots that are not fully dried can develop grey mould within 48 hours.
Storage
03Curing above 35°C or beyond 72 hours can consume starch, while temperature swings of ±3°C can cause sweating and soft rot.
Transport
04Insufficient individual buffering can cause abrasion and oxidation. Ethylene exposure can promote sprouting.
Buyer questions
How is availability confirmed?
Availability is checked against the current crop, selected lot, grade, packing and requested delivery window before quotation.
Can packing be customized?
Buyer labels and packing formats can be reviewed. Feasibility depends on product, volume, material lead time and destination rules.
Which export documents are available?
Applicable plant-health, origin, inspection and commercial documents are confirmed for the product, legal entity and destination market.
What information is needed for a quotation?
Please provide the required product type, grade, size, preparation condition, quantity, packing, destination port, Incoterm, delivery window, container type and any required certificates or laboratory tests.
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Request a lot-specific quotation
Send your target grade, packing, volume, destination port, delivery window and required documents. We will confirm crop availability and the next quotation step within one business day.
Start Purple Sweet Potato inquiry