Dried-fruit-and-nuts

Preserving Sulfur Dioxide

The use of sulfur dioxide (SO2) as a food preservative is truly historic. Accounts from the 1500s mention its use to preserve wines, while its 21st century uses have grown to include baked goods, seafood, grains, condiments, pharmaceuticals and of course, dried fruits and vegetables. Applied as gaseous sulfur dioxide or as salts of sulfite,…

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