An increased AST level is usually a sign of liver disease. Liver disease is even more likely when the levels of substances checked by other liver blood tests have also increased. An increased AST level may be due to any of the following:
In order to keep itself fresh, the lettuce gives off carbon dioxide, causing a slight odour. This carbon dioxide is not harmful and the odour should disappear quickly once the salad package is opened.
Sorbic acid is a preferred preservative compared to nitrates, which can form carcinogenic byproducts. Itâs applied to food by either spraying or dipping the food with a solution of sorbic acid and water.