Sample Preparation Methods for the Determination of the Antioxidative Capacity of Apple Juices

The elevated ecological awareness nowadays led to a higher consumption of apples juices. Apples juices are rich in dietary fiber, pectin, potassium, and vitamins A and C as well as in different classes of phenolic compounds, which can protect the human body against oxidative stress by scavenging oxygen free radicals. During production and storage some bioactive compounds might decompose resulting in a reduced antioxidative capacity.