Estudo do desenvolvimento fisiológico da cagaita (Eugenia dysenterica)
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2016-04-15
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Universidade Federal de Goiás
Resumo
The Brazilian Cerrado presents a multitude of native fruits, but little known. Among these, there is
cagaita (Eugenia dysenterica), juicy and very pleasant taste. However, reports on the knowledge of
its biochemical and bioactive processes involved in the development of fruit, are scarce. Thus, this
study aimed to evaluate physical and chemical, including bioactive compounds, the physiological
development of cagaita (Eugenia dysenterica), anthesis to its maturity. The fruits were collected 10
days after anthesis (DAA) in Abbey-GO, and subjected to physical and chemical analysis as well
as analysis of bioactive compounds. The total fruit development comprised 37 days, being
characterized the result of rapid growth, with double sigmoidal behavior. The respiratory rate in
unripe fruits were high, with a decrease during the development, and verified increased ethylene
induction from 31 DAA, leading to degradation of starch, chlorophyll, unmasking of carotenoids
and solubilization of pectins. The sugar content was relatively low, since it is a fruit with slightly
sweet flavor. The bioactive compounds and antioxidant activity of cagaita contributed during the
physiological development, as a result of the defense system, especially in unripe fruits. However,
not ruling out the possibility of its beneficial health action, fighting free radicals. The proximal
composition, evaluated from the 18th DAA, underwent changes during development. The crux of
the changes occurred from the 27th DAA, when they occur the second growth phase of the fruit,
with an increase in maximum rates, according to the double sigmoidal behavior. The climacteric
period was also evaluated, with intuited whether the cagaita belonged to the respiratory pattern
considered climacteric or not. For this study, the fruits were collected 31 DAA. respiratory
climacteric peak was observed, indicating that cagaita is a climacteric fruit, may be harvested 31
DAA. This data is of great importance for both the academic community, and to farmers and
agribusinesses working with the extraction of this fruit.
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Citação
SILVA, M. M. M. Estudo do desenvolvimento fisiológico da cagaita (Eugenia dysenterica). 2016. 119 f. Dissertação (Mestrado em Ciência e Tecnologia de Alimentos) - Universidade Federal de Goiás, Goiânia, 2016.