Humans cannot synthesize vitamin c Manual. Therefore they must be eating fruits and vegetables, so the body gets vitamin c. Vitamin c, it helps to resist heart disease. Antioxidants help prevent cataracts and also help with memories, too. We can find vitamin c in fruits, vegetables, citrus, lemon fresh green potato, etc. and for this reason, a large part of the population is therefore often mistaken them citrus fruits are high in vitamin c, in fact, what makes the fruit sour taste is acid because the acid is the aqueous acidic without vitamin c, it is so well made, so study group to study the comparison condition, acid-base and the concentration of vitamin c in fruit as an alternative to consumers.