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.
Physical preservation entails refrigeration and drying. They are used in foods, cosmetics, and many other products. Preservative food additive s reduce the risk of foodborne infections, decrease microbial spoilage, and preserve fresh attributes and nutritional quality.his method is the most traditional and ancient type of preservingâancient methods such as pickling and adding honey prevent microorganism growth by modifying the pH level. The most commonly used antimicrobial preservative is lactic acid.