Visible-light spectra of coconut water before and after sterilisation and storage at 4°C. (A). After autoclaving at 121°C and 15 psi for 20 minutes and gamma irradiation at 5 kGy, absorbance of fresh, autoclaved and irradiated coconut water within the visible light region were measured. (B). After two weeks of storing the fresh, autoclaved and gamma irradiated coconut water at 4°C, their absorbance were measured at 20 nm interval within the visible light region. (C). After one month in storage at 4°C the absorbance measurements were repeated as in B, These were all plots of the average of three absorbance readings at each wavelength. Absorbance readings at wavelengths from 320 nm to 340 nm were very unstable and as such were excluded from the plot.