It was used 5 g of pulp
in centrifuge tubes and extracted firstly with 20 ml of methanol/
water (50:50, v/v) leaving it in rest at room temperature for
60 min. The tubes were centrifuged at 15,000 rpm for 15 min and
the supernatant was recovered. Following that 20 ml of acetone/
water (70:30, v/v) was added to the residue at room temperature
for 60 min and centrifuged. The extract was created from the
mixture of the supernatant of methanol and acetone, in 50 ml
volumetric flask, filling with distilled water.
Extractable polyphenols totals (TEP, mg GAE/100 g) were determined
by the Folin–Ciocalteu method (Obanda & Owuor, 1997).
The extracts (10 and 25 lL of the green and mature fruits respectively)
were mixed with 1 ml of the Folin–Ciocalteu reagent, 2 ml
of the 20% sodium carbonate solution and 2 ml of distilled water.
Following that the samples were agitated and left at rest for at least
30 min in the dark. The readings were made in spectrophotometer
at 700 nm, using the standard curve of gallic acid 98% (0–50 lg).