Appert: preserving food by sealing and heating

What changed

Food preservation gained a reproducible heat-and-seal process that could be applied beyond a single recipe.

Scientific scope

The 1810 method and publication; not germ theory, later metal canning, industrial scale-up, safety standards or all thermal processing.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The practical method predates a microbiological explanation and does not by itself establish later canning technology or industrial deployment.

Contributors

• Nicolas Appert · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• Nicolas Appert, The Art of Preserving Animal and Vegetable Substances (1810 translation)
• Chateau des ducs de Bretagne collection: Appert preservation process

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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