1. AIJN (European Fruit Juice Association) (1996). Code of practice for evaluation of fruit and vegetable juices. Brussels: Association of Juices and Nectars from Fruits and Vegetables of European Union. https://aijn.eu/en/publications/aijn-papers-guidelines/juice-quality. Accessed 21 August 2019.
2. AIJN (European Fruit Juice Association) (2018). Market Report 2018. https://aijn.eu/files/attachments/.598/2018_Liquid_Fruit_Market_Report.pdf. Accessed 21 August 2019.
3. The Lobry de Bruyn-Alberda van Ekenstein Transformation and Related Reactions;Angyal,2001
4. Influence of storage on the composition of clarified apple juice concentrate;Babsky;Journal of Food Science,1986
5. Belitz, H. D., Grosch, W., & Schieberle, P. (2009). Food Chemistry: Springer Berlin Heidelberg.