Nitrite salt – it is natrium or kalium nitrite, mixed with food salt. It is used to prepering sausage – meat, smoke – dried meat products. Such mix make longer expiry date, keeps red meat colour. Normatives lets to put nitrite salt within 150 mg for 1 kg meat, because big amounts of nitrites are dangerous for people health.

Salt is :

• Giving taste substance;
• Oxidation inhibitor;
• Conserved substance;
• Melting protein reagent.