Microbiology analyses were carried out on the samples at regular
intervals through the storage period. One milliliter of decimal dilution
of orange juice samples was pipetted to petri dishes (25 mL of fresh
orange juice was homogenised in 225 mL of 0.1% (w/v) sterile
peptone water with a Stomacher circulator homogeniser). An
enumeration of total counts was carried out at 30 °C on plate count
agar (PCA) over 72 h. The results were expressed as log 10 colony
forming units per kg (CFU mL−1).