Is it forbidden to eat processed foods containing food additives with codes such as E120, E124, E471, E472, if they are extracted from pigs, insects, or alcohol, or is it permissible based on the fatwa that allows what contains a small percentage of alcohol?

The basic principle concerning foodstuffs is permissibility. It is not permissible to declare any food unlawful unless it is proven that an additive to it is impure or prohibited, such as being from a carcass, pork, or alcohol. A mere published article is not sufficient unless its source is reliable. If it is proven that a prohibited substance has been added to food, then it becomes unlawful regardless of the small quantity, unless the prohibited substance had undergone a transformation [istihalah] before mixing.