Freeze-Dried Longan

Freeze-dried longan looks easy to approve when the sample is clean, crisp and aromatic. The real buyer risk begins after that first impression. Importers, distributors, R&D teams, QA managers and private label buyers need to know whether the product has a controlled origin route, correct fresh-to-dry basis, stable format, moisture and Aw proof, COA, packaging file, destination-market documentation and sample-to-bulk release criteria. A Whole Pitted sample can look strong while the bulk lot still has unclear pitting loss, broken-piece tolerance, residue scope or shelf-life evidence.

A good freeze-dried longan sample is not a qualified supply program until it becomes a locked, documented and quality-controlled product file. FruitBuys supplies export-ready Vietnamese freeze-dried longan through an Integrated Product Supply Model covering raw material, qualified production partners, QC, packaging, documentation and export logistics coordination.

What Is Freeze-Dried Longan?

Freeze-dried longan is a low-moisture fruit product made from prepared longan flesh and dried through a freeze-drying route.

For B2B buyers, the product must be defined by origin, format, moisture, Aw, COA, packaging and release criteria.

Do not approve it from a product photo or sample taste alone.

Freeze-dried longan is normally built from peeled and pitted longan flesh. The buyer must distinguish it from whole fresh longan, conventional dried longan, sweetened longan, stuffed longan or formulated powder. Codex CXS 360-2020 identifies dried longan and dried longan flesh within the dried fruits standard and describes dried longan flesh as peeled and pitted whole fruit; it also includes defect concepts such as broken flesh and extraneous vegetable material, which supports the need to separate product style from uncontrolled defects. (FAOHome)

FruitBuys treats freeze-dried longan as a configured product, not a loose fruit category. The working formats are Whole Pitted, Half Cut, Diced/Chunks and Powder, with custom sizing only when the specification, processing route and sample approval support it.

The buyer’s product file should define:

Buyers comparing freeze-dried longan with conventional dried longan should review freeze-dried versus conventional dried longan before choosing the product route.

Vietnam Longan Origin, Variety and Harvest Season

Vietnam origin matters, but origin alone does not qualify the product. Longan grown in different regions can vary in aril thickness, seed size, maturity, soluble solids, harvest condition and pitting performance. Those factors affect conversion, shape retention, drying uniformity, Whole Pitted recovery and final application performance.

Australian Government DAFF describes Vietnam longan production across multiple regions and notes that northern Vietnam’s peak production season is July to August, with some newer cultivars harvested into early September. (Nông Nghiệp Úc) Hưng Yên’s 2025 official update also described the local longan harvest season as concentrated from July 15 to September 20, with early, main-season and late-season groups (Hưng Yên).

FruitBuys uses origin as part of Raw Material Sourcing Governance. The buyer should ask for:

• Growing area or province route
• Variety direction where available
• Harvest or intake window
• Maturity criteria
• Raw-material lot identity
• Pitting suitability
• Residue and sulfite review
• Link between raw-material lot and finished lot

The full raw-material route belongs in Vietnam longan origin and harvest season. In this buyer guide, the operating rule is direct: origin must enter the product file, not stay as a marketing phrase.

Fresh-to-Dry Conversion Ratio

The working FruitBuys conversion basis is 6–7 kg peeled and pitted fresh longan flesh → 1 kg finished freeze-dried longan. This is not a whole-fruit conversion. Whole fruit includes peel, seed, stem, field defects and intake rejects. Prepared flesh is the usable input that enters the freeze-drying route.

USDA-linked raw longan composition data list water at about 82.75 g per 100 g edible portion, which helps explain why drying can remove most mass before finished-product release. (Growables) The practical ratio still differs from a theoretical water-removal calculation because production includes pitting loss, juice loss, tray handling, drying variation, grading, broken pieces and lower-format separation.

A serious buyer should separate four yield bases:

The detailed calculation belongs in fresh-to-dry conversion ratio. In the RFQ, buyers should state the weighing boundary and ask for a lot-based yield sheet.

Processing Controls Before Drying

Freeze-drying does not repair weak raw material or poor preparation. The process must control intake, sorting, washing, peeling, pitting, draining, tray loading, freezing, drying endpoint, grading, packing and release. USDA FSIS explains freeze-drying as water escaping from frozen food through sublimation, without passing through the liquid phase. That supports the need to protect product structure before the dryer runs. (U.S. Food and Drug Administration)

For freeze-dried longan, the most sensitive steps are usually pitting, tray loading and endpoint verification. Whole Pitted longan needs aril integrity. Chunks need size and fines control. Powder needs controlled milling and moisture discipline.

Buyer control points:

The detailed process route belongs in freeze-dried longan processing controls. FruitBuys keeps these steps connected under Quality Control and Documentation, so the buyer reviews one finished product route.

Format Selection: Whole, Half, Chunks or Powder

Format determines application fit. A buyer who asks only for “freeze-dried longan” has not yet specified the product. Whole Pitted, Half Cut, Diced/Chunks and Powder each require different physical tolerances, packaging protection, COA fields and sample-to-bulk controls.

The core selection logic:

The format decision belongs in freeze-dried longan format selection [FD-LNG-04]. Powder needs deeper specification through freeze-dried longan powder specification.

FruitBuys does not treat broken Whole Pitted product as automatically acceptable chunks. An intentional format must have its own size, fines, visual and release criteria.

Moisture and Water Activity

Moisture and Aw are separate release controls.

Moisture measures how much water remains in the product; Aw measures available-water behavior under defined conditions.

Buyers should require both values in the finished-lot release file.

FruitBuys uses a working target of 3–5% moisture and Aw ≤0.30 for freeze-dried longan, subject to finished-lot testing. FDA defines water activity as the ratio between the vapor pressure of water in a food and the vapor pressure of pure water under identical conditions, and FDA notes that temperature affects Aw measurement. (U.S. Food and Drug Administration)

This matters because a visually dry product can still fail if the lot, method, package or storage condition is not controlled. Moisture affects crispness, mass, texture and drying endpoint. Aw supports available-water stability review. Low Aw does not replace sanitation or microbiology.

FDA’s low-moisture ready-to-eat guidance focuses on sanitation programs and corrective actions after pathogen contamination events, which reinforces that low-moisture products still require hygienic handling and documented controls. (U.S. Food and Drug Administration)

The full technical explanation belongs in moisture and water activity control. The buyer should move both limits into the RFQ and require COA proof through COA and laboratory testing requirements.

COA and Laboratory Testing

A COA is useful only when it matches the exact product, format, lot, method, result and release limit. A historical report, certificate logo or general lab file cannot prove the current shipment.

A freeze-dried longan COA should identify:

• Product name
• Format
• Ingredient status
• Lot code
• Sample date
• Test date
• Test method
• Result
• Specification limit
• Laboratory identity
• Authorized release status

Core testing may include moisture, Aw, microbiology, foreign matter, seed fragments, peel fragments, broken-piece rate, fines, residue panel, sulfite status and contaminant review where relevant. EU-bound residue review should account for the EU pesticide MRL framework under Regulation (EC) No 396/2005, and contaminant review should account for Commission Regulation (EU) 2023/915 where applicable (EUR-Lex).

The full test-file route belongs in COA and laboratory testing requirements. FruitBuys connects COA, lot code, retained sample and package file so the buyer can release the actual supplied product, not a disconnected document.

Packaging and Shelf-Life Controls

Packaging preserves the drying result. A lot can pass moisture and Aw at release, then soften, cake or break when the package, seal, carton or storage route fails. Shelf life must apply to a defined product, format, package, seal and storage condition.

A packaging file should define:

The detailed packaging route belongs in packaging and shelf-life validation. FruitBuys should not use 12–24 months as an unconditional statement. That range must be tied to package, storage and validation evidence.

Powder Specification

Freeze-dried longan powder is not defined by the word “powder.” Buyers must confirm whether the powder is 100% longan or a formulated powder with carrier or anti-caking agent. That decision affects ingredient statement, nutrition, private label artwork, COA, application testing and market review.

Powder approval should cover:

The detailed powder route belongs in freeze-dried longan powder specification. FruitBuys treats powder as a configured ingredient, not a default outlet for broken pieces.

Applications for Food Manufacturers

Freeze-dried longan can serve multiple applications, but each use needs a different format and proof file. A snack buyer may need Whole Pitted visual identity. A cereal buyer may need Diced or Chunks with low fines. A beverage buyer may need Powder with mesh and carrier status locked.

Application mapping:

The full application guide belongs in freeze-dried longan applications. FruitBuys prepares samples around the buyer’s actual product system, not only around dry taste.

Nutrition Facts and Label Validation

Nutrition data must match the finished SKU. Buyers should not copy Nutrition Facts from raw longan, conventional dried longan, marketplace labels, unrelated pouches or supplier images. FDA explains that Nutrition Facts serving size is based on amounts customarily consumed, not recommended intake, and that serving size appears as a household measure followed by grams. (U.S. Food and Drug Administration) EU nutrition declaration rules under Regulation (EU) No 1169/2011 require destination-specific food-information review for prepacked food. (EUR-Lex)

For freeze-dried longan, label validation should confirm:

• Product format
• Ingredient status
• Powder carrier status
• Finished-product moisture
• Serving size
• Per-100 g values where needed
• Destination market
• Nutrition data basis
• Claims scope
• Artwork version
• Packaging route

The detailed route belongs in Nutrition Facts and label validation. FruitBuys should not support nutrition or “no added” claims unless the formula, data and destination rules support the exact statement.

USA, EU and UAE Market Readiness

Market readiness is not one document pack.

The USA, EU and UAE can require different importer, label, nutrition, residue, registration, language and document routes.

Buyers should name the destination before sample approval.

For the U.S., FDA states that importers can import foods without prior FDA sanction when facilities that produce, store or otherwise handle the products are registered where required and prior notice is provided; FDA’s FSVP rule also requires covered importers to verify that imported foods meet applicable U.S. safety standards and are not adulterated or misbranded with respect to allergen labeling. (U.S. Food and Drug Administration)

For EU-bound products, buyers should review food information under Regulation (EU) No 1169/2011, pesticide MRLs under Regulation (EC) No 396/2005 and contaminants under Commission Regulation (EU) 2023/915 where relevant. (EUR-Lex)

For UAE routes, label language, product-registration route, nutrition declaration and importer/distributor requirements must be confirmed before private label printing. The full destination workflow belongs in USA, EU and UAE market readiness.

FruitBuys aligns supplier-side product documentation, COA, packaging data and shipment support. Importer-side obligations remain destination-specific and must be handled by the buyer or importer of record.

Sample-to-Bulk Consistency

A sample is not a bulk release standard until it becomes measurable. FruitBuys separates visual sample, application sample, laboratory sample, production-representative sample and retained golden sample.

The buyer should convert sample approval into:

• Format criteria
• Size or mesh range
• Whole-piece rate where relevant
• Broken-piece tolerance
• Fines limit
• Moisture limit
• Aw limit
• Packaging route
• COA scope
• Retained sample
• Deviation route
• Change-control triggers

The full method belongs in sample-to-bulk consistency controls. A hand-selected sample cannot release bulk production by itself. The bulk lot must match the written specification and produce its own proof.

OEM and Private Label Delivery

Private label is not decoration. It is a controlled product system. A retail pouch needs product format, ingredient statement, Nutrition Facts or nutrition declaration basis, pack size, artwork version, lot code, storage statement, shelf-life evidence and COA.

FruitBuys supports OEM and private label delivery by connecting:

The full execution route belongs in OEM and private label delivery. FruitBuys supplies one configured SKU under one accountable supplier relationship.

Container Loading and Logistics

Freeze-dried longan logistics must protect moisture control, product format, package integrity, carton identity and document alignment. The working carton input for this cluster is 60 × 39 × 39 cm / 10 kg net, subject to final packaging and loading review.

Hapag-Lloyd’s container specification notes that container dimensions are nominal and can vary by production tolerance, which supports conservative loading review instead of fixed carton-count claims. (Food Safety) The CTU Code provides global practice for packing and securing cargo transport units, supporting the need to treat container loading as a controlled logistics activity. (Food Safety)

The detailed route belongs in container loading and logistics planning. FruitBuys aligns carton marks, lot codes, packing list, COA, loading file and arrival inspection criteria before shipment release.

RFQ Checklist

The buyer’s RFQ should not ask only for “freeze-dried longan.” It should define:

• Product identity
• Origin or harvest preference
• Format
• Application
• Size or mesh
• Whole-piece rate where relevant
• Broken-piece and fines limits
• Moisture
• Aw
• COA scope
• Microbiology and residue panel where required
• Sulfite review where required
• Packaging
• Shelf-life evidence
• Destination market
• Nutrition-label route
• Private label route where relevant
• Sample type
• Retained sample requirement
• Carton and lot-code plan

Use the full freeze-dried longan RFQ checklist before requesting a sample. A structured RFQ lets FruitBuys supply the correct product route from the start.

Application Mapping

Why FruitBuys Delivers This

FruitBuys supplies freeze-dried longan through an Integrated Product Supply Model covering growers, qualified production partners, QC, packaging, documentation and logistics. The buyer receives one locked, documented, quality-controlled product under one supplier relationship.

Under Raw Material Sourcing Governance, FruitBuys aligns origin, harvest timing, variety direction, maturity and prepared-flesh basis with the buyer’s selected format. Under Quality Control, FruitBuys verifies processing, format, moisture, Aw, breakage, fines, sensory reference and retained sample against the approved specification. Under Documentation, FruitBuys connects COA, laboratory reports, product identity, label inputs, packaging file and shipment documents. Under OEM/Private Label Delivery, FruitBuys converts the approved product into a SKU with packaging, artwork and release controls. Under Export Logistics Coordination, FruitBuys aligns carton identity, loading file and document handover with the released lot.

This is the supply-chain reality: buyers lose control when raw material, processing, packaging, documents and logistics are handled as disconnected tasks. FruitBuys supplies one export-ready product route with single-point commercial accountability.

Buyer Checklist

Before approving freeze-dried longan, confirm:

• Product identity
• Botanical name where used
• Origin route
• Harvest window
• Variety direction
• Prepared-flesh conversion basis
• Target format
• Size or mesh range
• Whole-piece rate where relevant
• Broken-piece tolerance
• Fines limit
• Seed-fragment and peel-fragment rule
• Moisture limit
• Aw limit
• COA scope
• Microbiology panel
• Pesticide residue review where required
• Sulfite review where required
• Contaminant review where required
• Packaging structure
• Seal route
• Shelf-life evidence
• Storage condition
• Application trial
• Nutrition Facts or nutrition declaration basis
• Destination market
• Private label artwork route where relevant
• Retained golden sample
• Carton and lot-code plan
• Arrival inspection criteria
• Change-control triggers

Do not release the bulk order from a sample photo. Release it from a product file.

Summary

Freeze-dried longan from Vietnam should be qualified by origin, prepared-flesh conversion basis, processing controls, format, moisture, Aw, COA, packaging, market documentation and sample-to-bulk consistency. FruitBuys uses a working basis of peeled and pitted longan flesh, formats including Whole Pitted, Half Cut, Diced/Chunks and Powder, moisture 3–5% and Aw ≤0.30, subject to lot testing. FruitBuys supplies export-ready freeze-dried longan through Raw Material Sourcing Governance, Quality Control, Documentation, OEM/private label delivery and export logistics coordination.

FAQ

What is freeze-dried longan?

Freeze-dried longan is prepared longan flesh dried through a freeze-drying route into Whole Pitted, Half Cut, Diced/Chunks or Powder formats. Buyers should define format, moisture, Aw, COA and packaging before approval.

What is the conversion ratio for freeze-dried longan?

FruitBuys uses a working basis of 6–7 kg peeled and pitted fresh longan flesh for 1 kg finished freeze-dried longan. This is not a whole-fruit conversion.

What moisture and Aw should buyers request?

FruitBuys uses 3–5% moisture and Aw ≤0.30 as working release targets, subject to finished-lot testing. Buyers should require both values on the lot-specific COA.

Which format is suitable for retail snack pouches?

Whole Pitted or controlled Chunks usually fit retail snack pouches. Buyers should lock whole-piece rate, breakage, moisture, Aw, packaging and retained sample before bulk approval.

Can freeze-dried longan powder be private label?

Yes, when ingredient status, carrier status, mesh, moisture, Aw, caking behavior, COA, packaging and nutrition-label basis are locked before artwork and sampling.

Does a COA prove shelf life?

No. A COA confirms selected lot results at a defined time. Shelf life also needs packaging, seal, storage and validation evidence for the exact product route.

What should buyers send in an RFQ?

Send application, format, origin preference, moisture/Aw limits, COA scope, packaging route, destination market, sample type and private label requirements where relevant.

Conclusion

Submit the target format, application, destination market, packaging route and COA scope so FruitBuys can prepare the freeze-dried longan qualification file before sample approval.

References

1. Codex Alimentarius Commission. CXS 360-2020: General Standard for Dried Fruits. 2020. (FAOHome)
2. Australian Government Department of Agriculture, Fisheries and Forestry. Longan fruit from Vietnam. (Nông Nghiệp Úc)
3. Hưng Yên Province. The Conference on Promoting Longan and Agricultural Products Consumption in Hung Yen Province in 2025. (Hưng Yên)
4. U.S. Department of Agriculture / National Nutrient Database. Basic Report 09172, Longans, raw. (Growables)
5. U.S. Food and Drug Administration. Water Activity (aw) in Foods. (U.S. Food and Drug Administration)
6. U.S. Food and Drug Administration. Draft Guidance for Industry: Establishing Sanitation Programs for Low-Moisture Ready-to-Eat Human Foods. January 2025. (U.S. Food and Drug Administration)
7. U.S. Food and Drug Administration. Importing Food Products into the United States and Importing Human Foods. (U.S. Food and Drug Administration)
8. EUR-Lex. Regulation (EC) No 396/2005 on maximum residue levels of pesticides. (EUR-Lex)
9. EUR-Lex. Commission Regulation (EU) 2023/915 on maximum levels for certain contaminants in food. (EUR-Lex)
10. Hapag-Lloyd. Container Specification. (Food Safety)
11. IMO / ILO / UNECE. Code of Practice for Packing of Cargo Transport Units — CTU Code. (Food Safety)