Modified Starch Raw Material Prices: October 2026

The available observations show different pressures within the same supply chain.

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Sources: SunSirs and the Thai Tapioca Starch Association (TTSA).^2–4 Percentage changes compare the stated endpoints. They are not uniform 30-day returns. The latest TTSA observation available for this review was October 6.

Corn starch and Thai tapioca starch eased over these intervals, while propylene oxide moved upward. That divergence matters for products whose manufacturing routes use this chemical. It does not imply an equivalent cost increase across all modified starch grades.

For a manufacturer, the next question is whether a published movement appears in a comparable supplier offer. Grade, delivery location, packaging, payment terms and quotation validity all affect that comparison.

A benchmark can justify requesting an updated quotation. The quotation, together with consumption and production data, determines whether an order has become cheaper to manufacture.

The Thai export indicator declined by USD 5 per tonne between September 22 and October 6. TTSA identifies its published price as a super premium grade reference. Its export price includes transport to Bangkok port and 50 kg PP/PE packaging; the domestic quotation includes transport to the port but excludes packaging and VAT.^{3, 5}

Those details prevent two common comparison errors: treating the domestic and export quotations as identical offers in different currencies, and treating an FOB reference as a delivered factory price.

Calculating Delivered Starch Costs

For a Chinese importer, a practical calculation starts with the costs payable in the supplier’s currency:

Apply currency conversion separately where charges use different currencies. Include only costs that have not already been included in the supplier’s terms. Recoverable taxes may still create a cash-flow requirement, so purchasing cash outlay and accounting cost should be tracked separately.

The exchange rate also needs a date and a basis. An indicative rate used to compare offers may differ from the rate actually paid or secured under a currency arrangement.

A small FOB reduction can therefore be offset by exchange-rate movement, freight or inland delivery costs. The useful comparison is the delivered cost of the same approved grade, for the same receiving location and delivery window.

Inventory Costs and Replacement Purchases

Timing matters after the material arrives, too. A cheaper replacement purchase may benefit future batches while existing inventory continues to carry an earlier cost. Keep that distinction visible when discussing margins or customer quotations.

Selected European grain quotations did not move together.

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Source: CLAL/TESEO, EU-27 cereal prices.⁶ These are local grain quotations, not native starch or modified starch prices. The changes above are calculated from the listed weekly observations.

The opposing wheat movements are a useful reminder that a European average can conceal differences between locations.

European Starch Supply and Operating Costs

Roquette’s September 21 industry outlook also describes pressure from weather, energy, logistics and other industrial inputs. It reports reduced yield expectations for crops including corn, waxy corn and potatoes following summer heatwaves.⁷ This is a producer’s assessment, not an independent price index or a notice of future price increases.

For manufacturers evaluating European supply, price and availability need separate checks. Ask which grade and production origin the supplier is offering, whether the volume is available for the required shipment period, and whether a change of origin would require qualification.

A grain price rise alone cannot quantify the change in a starch supplier’s conversion cost or contract price. Likewise, the sources reviewed here do not establish a comparable recent percentage movement for European potato starch. That gap should remain visible.

“Modified starch” covers different manufacturing routes. The FAO/JECFA specification distinguishes modifications including oxidation, acetylation, cross-linking and hydroxypropylation. It identifies propylene oxide as a reagent used to produce hydroxypropyl starch.⁸

This technical distinction determines which price movements belong in a product’s cost calculation. Propylene oxide should enter the analysis only where the production route uses it.

Material Consumption and Cost per Finished Tonne

A useful starting point is:

Keep units and moisture bases consistent. Holding consumption constant isolates the price effect; changes in consumption, yield or processing conditions require a separate adjustment.

Use the approved formulation and relevant production records to populate this calculation. A generic reagent allowance cannot establish the cost of a particular commercial grade.

Then examine conversion costs: utilities, labour, packaging, waste treatment and other applicable production expenses. A reduction in the largest raw material line does not guarantee a lower total if another input or process requirement changes.

Production Yield and Conversion Costs

Yield deserves its own line in the review:

Define the cost boundary and output basis consistently. For batch comparisons, account for rework, by-products and unfinished material under the same accounting approach.

For Tianjiang’s manufacturer-focused analysis, the decision should stay at the product-grade level. A revised quotation becomes meaningful when it can be connected to the material consumption and acceptable output required for that grade.

Comparing Starch Prices on a Dry-Matter Basis

Two suppliers can quote per tonne while supplying different amounts of dry matter.

A first comparison is:

Use a measured or appropriately agreed moisture value, with a consistent analytical basis. A contractual maximum is a specification limit; it is not automatically the moisture content of a delivered lot. Dry matter also includes any non-starch solids, so this calculation is a screening tool rather than a complete measure of ingredient value.

Application Performance and Supplier Approval

For a change in native starch source, qualification should address the intended modification process and the finished product’s requirements. A useful evaluation record connects the incoming lot, processing conditions, finished-product measurements and application result. Without that link, an attractive laboratory result may be difficult to interpret or repeat.

The checks should fit the application. For a starch intended for a sauce, the evaluation may need to reflect the formulation’s acidity, heating and shear conditions. For a frozen product, storage and freeze–thaw behaviour may be more relevant. These are proposed evaluation considerations, not reports of tests performed by Tianjiang.

The commercial calculation should include the cost of qualification, any additional processing requirements and the volume over which those costs can reasonably be recovered. Where customer approval is required, allow for that time before counting the material as available supply.

A lower purchase price becomes a usable saving when the approved material meets the required performance at a lower total cost. Until then, the offer is a sourcing opportunity that still needs evaluation.

Before acting on a market movement, put the supplier’s written offer beside the material specification and production schedule. The unresolved items usually become easier to see.

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Turning Supplier Offers into Purchasing Decisions

An approved material offered at a lower comparable cost may justify revising replacement-cost estimates. It does not automatically change the cost of stock already held.

An unqualified source needs a different decision: determine the evaluation work and timing before assigning it to production. Where delivery is uncertain, examine supply coverage and alternatives even if the quoted price is unchanged.

When base starch and modification chemicals move in opposite directions, recalculate the affected grades separately. A company-wide percentage adjustment can obscure which products are actually exposed.

Customer quotations should identify the grade, quantity, delivery terms and validity period. If a cost revision needs explanation, distinguish material, conversion and delivery effects. A published index can provide context, but the commercial offer should reflect the product and commitments being supplied.

The immediate value of this market review is a more precise next purchase: a comparable price, an approved material, a realistic delivery date and a cost calculation tied to acceptable finished output.