Alcohol is an organic compound in which the Hydroxyl functional group (-OH) is bound to a carbon atom.
According to the Quran alcohol is haram in Islam.
The Prophet (S.A.W) once said: “Whatever intoxicates in large quantities, then a small quantity of it is forbidden.” [Sunan al-Tirmidhî (1865), Sunan Abî Dâwûd (3681), Sunan al-Nasâ’î (5607), Sunan Ibn Mâjah (3392), and Musnad Ahmad (5648)]
Due to the given hadith alcohol is forbidden because it is haram(not allowed in Islam). The exact amount of alcohol in a food has no effect on the ruling. The ruling applies to the food itself taken as a whole and not to its composition. Anyway, such small amount of alcohol generally do not have any affect on a person who consumes the product but, it will be better if we avoid it.