Malic Acid (C4H6O5) is a naturally occurring dicarboxylic acid found in apples and many fruits. It provides a smooth, long-lasting sour taste compared to citric acid.
Applications:
Acidulant in soft drinks, candies, fruit juices
Flavor enhancer in sour confectionery
pH control in beverages
Fumaric Acid
Fumaric Acid (C4H4O4) is a white crystalline organic acid with strong acidity and low hygroscopicity. It is stronger than citric and malic acid.