The titratable acidity differed (p < 0.01) between maturity
stages, with the higher value for the mature fruits, this difference
represents 15% more acidity than green fruits (Table 1). The
increased acidity during ripening is also observed in banana, when
the post-harvest quality of different banana tree genotypes were
evaluated (Pimentel, Guimarães, Santos, & Resende, 2010). This
increase in acidity during fruit ripening may be related to the
unfolding of the starch into sugars, and its conversion to pyruvic
acid, caused by respiration of fruits. Part of this organic acid may
be oxidized in the Krebs cycle and the remainder stored in the
cytosol, representing high amount of organic acids in fruits
(Chitarra & Chitarra, 2005; Taiz & Zeiger, 2013). For the pH, there
was a reduction in the ripe fruit, according to the results found
for acidity, since there is an increase in acidity when the pH is
reduced.
The titratable acidity differed (p < 0.01) between maturitystages, with the higher value for the mature fruits, this differencerepresents 15% more acidity than green fruits (Table 1). Theincreased acidity during ripening is also observed in banana, whenthe post-harvest quality of different banana tree genotypes wereevaluated (Pimentel, Guimarães, Santos, & Resende, 2010). Thisincrease in acidity during fruit ripening may be related to theunfolding of the starch into sugars, and its conversion to pyruvicacid, caused by respiration of fruits. Part of this organic acid maybe oxidized in the Krebs cycle and the remainder stored in thecytosol, representing high amount of organic acids in fruits(Chitarra & Chitarra, 2005; Taiz & Zeiger, 2013). For the pH, therewas a reduction in the ripe fruit, according to the results foundfor acidity, since there is an increase in acidity when the pH isreduced.
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