Name: Judá Ben-hur de Oliveira
Type: MSc dissertation
Publication date: 31/01/2022
Advisor:
Name |
Role |
|---|---|
| Maria do Carmo Pimentel Batitucci | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| Hildegardo Seibert França | Internal Alternate * |
| JEAN CARLOS VENCIONECK DUTRA | External Examiner * |
| Juliana Macedo Delarmelina | External Alternate * |
| Maria do Carmo Pimentel Batitucci | Advisor * |
| Silvia Tamie Matsumoto | Internal Examiner * |
Summary: In recent years, Brazil has been standing out more and more in the cultivation
and production of pineapple, and showing itself as one of the largest producers
and exporters in the world. Belonging to the Bromeliaceae family, pineapple is
native to tropical and subtropical regions in the Americas. The pineapple
varieties, which are intended for commercialization of the fruit for consumption
in natura or processed, belong to the species Ananas comosus. The objective
of this work was to analyze and correlate the total contents of phenolic
compounds, flavonoids and antioxidant activities in different varieties of Ananas
comosus (L.) Merril. The assays used were based on the capture of levels of
phenols and flavonoids, in addition to the antioxidant activity, by the methods of
ABTS, DPPH and Iron ion chelator. The evaluation of correlations and
description of the variance and covariance between the different analyzed
variables were also performed. Pearson's correlation analysis and principal
components analysis (PCA) were used, respectively. The levels of phenolic
compounds averaged between 64.41 mg.g-1 and 226.22 mg.g-1, with emphasis
on EC-121 (226.22 mg.g-1 ) and Pérola (163.87 mg. .g-1 ). The bark was not a
relevant part in the accumulation of phenolic compounds. The EC-200, EC-118,
EC-88 and Pérola genotypes were the ones that stood out in terms of flavonoid
contents. As for the antioxidant assays, the most promising genotypes are EC
200, EC 118, EC 121, Vitória and Pérola, which despite their low activity in
some assays, showed high inhibition activity in others. Concluding that
pineapple genotypes can be used not only for consumption, but also as a
source of healthy biochemical compounds.
