Erythorbic acid is a vegetable-derived food additive produced
from sucrose. It is denoted by E number E315, and is widely
used as an antioxidant in processed foods. A synthetic isomer
of vitamin C, but with only 1/20 of the vitamin activity.
Used in dairy-based drinks, processed cheeses, fat spreads,
processed fruit, canned vegetables, breakfast cereals, sweeteners,
vinegars, and mustards.
May cause irritation to the skin and eyes, and mutagenic effects
have been observed on tests with bacteria.