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Its primary use is as a food preservative (E number 202).

Defrutum was often used as a food preservative in provisions for Roman troops.

At present, most food preservatives are made from synthetic chemicals.

It is also used as a food preservative and has the E number E218.

It finds use as a food preservative and acidity regulator.

Sodium acetate, used in the textile industry and as a food preservative (E262).

It can also act as a food preservative when used in sufficient concentrations.

The essential oil has potential for use as a food preservative, and is toxic to Leishmania.

Commercial pastes also contain food preservatives to keep them from becoming rancid.

In Baghdad in the ninth century, oregano was ground up and used as a food preservative.