If he had autism he wouldn't be very social, but very shy. I don't think flapping his arms is a sign of autism, but if you're concerned about it, ask a neurologist about it, or his doctor, either way. :) â¥ Cute T â¥ Â· 9 years ago.
If it weren't for food preservatives, we couldn't enjoy many of the great foods the world has to offer. Common antimicrobial preservatives include sodium nitrate, calcium propionate, disodium EDTA, potassium sorbate, sodium benzoate, and sulfites.
Edit 0 12 â¦. Preservatives can be anti-microbial, to inhibit the growth of bacteria, or antioxidants, to inhibit the oxidation of food constituents. Common anti-microbials: calcium propionate, sodium nitrate, sodium nitrite, sulfites (sulfur dioxide, sodium bisulfite, potassium hydrogen sulfite, etc.) and disodium EDTA.odium benzoate and benzoic acid are two very common antimicrobial compounds used in the preservation of food; sodium benzoate actually produces benzoic acid when dissolved in water. Benzoic acid has the antimicrobial properties and is found naturally in some fruits.