Kinetic modelling of vitamin C tosses in fresh citrus juices under different storage conditions


Nakilcioglu-Tas E. , ÖTLEŞ S.

ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS, cilt.92, 2020 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 92 Konu: 2
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1590/0001-3765202020190328
  • Dergi Adı: ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS

Özet

The degradation kinetics of vitamin C in different citrus juice types (tangerine, grapefruit, orange and lime) were investigated during four hours storage at temperatures of 4 and 25 degrees C under different storage conditions in terms of light and oxygen presence. The loss of vitamin C at each sample followed the first-order kinetic model. During storage, predicted half-life of vitamin C ranged from 137.586 to 467.486 min for tangerine; 105.444 to 203.100 min for grapefruit; 365.702 to 1044.668 min for orange and 540.076 to 722.016 min for lime juices. These results indicated that the highest and lowest retentions of vitamin C were observed in orange and grapefruit juices respectively during storage. Additionally, storage time, light penetration and oxygen presence were the most effective factors on vitamin C degradation while the storage temperature revealed no significant effect on the vitamin C content.