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.
Food preservatives can be classified into two general categories: antimicrobials or antioxidants. Antimicrobials inhibit the growth of yeasts, bacteria, and molds. Antioxidants slow air oxidation of lipids and fats, which causes foods to go rancid too quickly.