Cassava Flour Specifications: Moisture, Cyanogens and Test Basis

Start with the intended use

A useful cassava flour specification begins by identifying the product’s destination: food or feed, and the requirements that apply to that use. Food and feed specifications are not automatically interchangeable. A moisture criterion used for edible flour should not be assumed to govern a feed product, and a feed specification should not be treated as evidence that flour meets a food buyer’s requirements.

Before comparing offers, define the product identity, application, destination market and any applicable customer or legal criteria. Requirements can depend on where the product will be sold and how it will be used. The practical goal is to assess each lot against the same defined specification—not to search for one universal set of cassava flour limits.

Read moisture results in context

Moisture matters because it describes water in the flour, affecting how buyers assess the product’s condition and manage storage. But a result has limited value without its test basis and the criterion it is being compared with. Ask whether the result is reported on an as-is basis or a dry-matter basis, and identify the method used. Those details help prevent an apparent difference between lots from being a difference in reporting convention.

Keep the product’s end use in view when setting the acceptance criterion. An edible-food moisture requirement and a feed-product specification may come from different standards, customer requirements or quality programs. Do not transfer a value from one context to the other without checking that it applies to the product and destination. For receiving and storage planning, consider moisture alongside packaging, handling conditions and the receiving environment rather than treating it as a standalone measure.

Understand what the cyanide result measures

Cassava contains cyanogenic compounds, so cyanide-related results are important to interpreting flour quality for an intended use. A report must say what was measured: free cyanide, total HCN or total cyanide expressed as HCN are not necessarily equivalent descriptions. The method can affect which compounds are included in the reported result; a free-cyanide measurement, for example, does not by itself describe total cyanogenic potential.

Check the units, expression and sample basis as carefully as the named analyte. The report should make clear whether the result is expressed as HCN, whether the sample is reported as received or on a dry basis, and which analytical method was used. Without those particulars, two numbers cannot be reliably compared just because both are labeled “cyanide” or “HCN.”

Set the acceptable criterion using the requirements for the actual market and application. Do not apply a food criterion to feed, or assume that a feed result establishes compliance for food use. Where interpretation depends on a particular method or regulatory definition, have the applicable requirement and test basis reviewed together.

Compare lot records, not just headline values

A lot analysis or certificate of analysis should identify the lot and report the agreed moisture and cyanide measures with units, test methods and reporting basis. Compare like with like: the same analyte, method or accepted method equivalence, and sample basis. If methods differ, ask whether the results are comparable before using them to approve a lot.

Review the analysis alongside records that connect the tested sample to the offered lot, such as lot identification and traceability information. For food use, buyers may also need food-safety or process-control records required by their own program and destination. These documents answer different questions: a laboratory result describes a sample for specified tests, while traceability and process records help establish the lot’s identity and production controls.

Make the acceptance decision explicit. Record the product use, applicable criterion, test method and required documentation in the purchase specification. That gives the supplier and receiving team a shared basis for evaluating results and resolving a discrepancy.

Turn the specification into a sourcing brief

For a comparable quote, state whether you need food-use or feed-use cassava flour, the destination, quantity and delivery timing. Add the moisture criterion and basis, the required cyanide measure, units and test method, and any required food-safety or traceability records. If your organization accepts equivalent methods, define how equivalence will be assessed rather than leaving that decision until a test result arrives.

Once those requirements are clear, visit the Cassava Flour page to pursue sourcing. The page is a starting point for connecting with a broker; the exact lot analysis, certifications, origin, packaging and commercial terms must be established for the specific offer.

Common questions.