1. Official method 981.12. pH of acidified foods. Official methods of analysis,1990
2. Official method 942.15. Acidity (Titratable) of fruit products. Official methods of analysis,1990
3. Official method 967.21. Vitamin C (Ascorbic Acid) in vitamin preparations and juices. Official methods of analysis,1990
4. Bioactive compounds and antioxidant activity of fresh exotic fruits from northeastern Brazil;Beserra Almeida;Food Research International,2011
5. Managing food safety risks in the fresh-cut industry;Beuchat,2007