The collected liquid extract was placed into eight litre
stainless steel pots and heated to boiling temperature of
91 °C for 11 hours and five minutes on an electric hot plate
until the liquid turned into a brownish and viscous syrup with
the brown colour darkening further as more water was evaporated.
On further heating, the liquid became sweeter as more
water was evaporated and a distinct odour of the syrup was
smelled. Heating of the extract was continued until the volume
of syrup was reduced to 1.5litres. The syrup was transferred to
glass bottles that had been cleaned and sterilized in an autoclave.
The first batch of fruit processed was designated as F1.
The process was repeated with new fruit resulting in batches
F2 and F3. Measurements made during the processes for the
fruit are recorded in table 1.