Conclusion
From the presented results it can be concluded that addition of maltose and trehalose had a positive effect on preservation of anthocyanins, especially on cyanidin-3-glucosylrutinosid in freezedried sour cherry purees. Addition of maltose (20%) had the highest impact on antioxidant activity regardless of which method was used for its determination. Findings of this research could help in enhancing product quality through preservation of valuable compounds such as anthocyanins and antioxidant activity through
addition of maltose or trehalose.
Acknowledgements
This work has been fully supported by the Croatian Science Foundation under the project Trehalose: fruit product quality improvement project (6949). We are grateful to Hayashibara, Nagase Group, Japan for generous donation of trehalose and maltose.