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Table 2 pH variations in coconut water before and after sterilisation and storage

From: Exploring the influence of sterilisation and storage on some physicochemical properties of coconut (Cocos nucifera L.) water

Sample Initial pH Magnitude of pH decrease after
   Autoclaving Irradiation Storage
Fresh coconut water 6.0-6.5 1.5 1.5 2.0
Mix coconut water 6.5 1.5 -- 2.5
Autoclaved mix coconut water 5.0 -- -- 0.0
Autoclaved coconut water 5.0 -- -- 0.0
Radiated coconut water 4.5 -- -- 0.0
  1. The coconut water was autoclaved at 121°C and 15psi for 20 minutes or Irradiated at 5 kGy. All storage was at 4°C for 1 month.