1. AOAC, 1990. Official Methods of Analysis, 15th Edition. AOAC, Arlington, VA.
2. Influence of commercial shipping on the color and composition of apple juice concentrate;Babsky;Journal of Food Quality,1989
3. The importance of the amino acid spectrum in apple juices;Bielig;Flussiges Obst,1982
4. Changes in apple polyphenoloxidase and polyphenol concentrations in relation to degree of browning;Coseteng;Journal of Food Science,1987
5. Influence of harvest date and controlled atmosphere storage delay on the color and quality of ‘delicious’ apples stored in a purge-type controlled-atmosphere environment;Drake;Horticultural Techniques,1994