Modification of vitamin C concentration, Brix and acidity in orange nectar in aseptic packaging.

Samples of orange nectar in aseptic packaging were stored in controlled room temperature) (25 degrees C) and in a refrigerator) (4 degrees C). For eight weeks, analyses of vitamin C, Brix and acidity were conducted as the packages were opened, and their residual products were further analyzed during a period of four days stored in a refrigerator. By using statistical models from the results found, it was concluded that storage temperature influences the quantity of vitamin C in orange nectar. There was a significant decrease in vitamin C concentration in nectar, but storage temperature does not influence acidity or Brix. Storage time does influence vitamin C, Brix and acidity. It was concluded that after eight weeks of storage and four days of opening the package, the amount of vitamin C in a 200 mL glass of orange nectar is enough to supply the average needed daily intake (60 mg) of vitamin C for an adult.