Maltol is a route-dependent ingredient — its NOI (0–1) depends on the manufacturing process used. Maltol occurs naturally and can be a fermentation byproduct, but most commercial maltol is produced by chemical synthesis.

Is Maltol natural? NOI route-dependent

Why the score varies

This ingredient is made commercially by more than one route, and ISO 16128 scores the feedstock actually used. Without a supplier certificate of origin the value cannot be claimed.

Route	Feedstock	NOI	Share	Notes
extraction or fermentation byproduct	roasted malt, pine bark, or streptomycin fermentation, natural	1.00	~15%
chemical synthesis	petrochemical	0.00	~85%

Ask your supplier. A batch-specific certificate of origin or bio-based carbon test (ASTM D6866) settles which route applies.

How we scored it

Natural route: extracted from roasted malt, pine bark, or a fermentation byproduct, gives 1.0. Dominant route: chemical synthesis gives 0.0. Market share is estimated.

What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Industrial maltol is typically manufactured by chemical synthesis. Smaller volumes are extracted from roasted malt, pine needle oil, or recovered from fermentation processes.

In plain English

A sweet, caramel-like flavor and fragrance ingredient. It occurs naturally in roasted malt and pine bark but is mostly produced by chemical synthesis commercially.

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References

1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
2MALTOL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
3MALTOL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=MALTOL