Name: FLAVIA FIGUEIRA DE SOUZA PATRICIO
Publication date: 25/02/2022
Advisor:
Name |
Role |
|---|---|
| SARA DOUSSEAU ARANTES | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| EDILSON ROMAIS SCHMILDT | Internal Examiner * |
| SARA DOUSSEAU ARANTES | Advisor * |
Summary: Papaya (Carica papaya L.) is one of the most cultivated fruit species in the world, with
Brazil being the second largest producer of this crop in the world, however it is still
necessary to develop techniques in post-harvest management aimed at improving the
quality of the fruit. Papaya has a high moisture content and respiratory rate, being
easily damaged, and may suffer losses directly in the fruit due to pulp degradation and
economic losses due to lack of consumption in a timely manner. The objective of this
work was to evaluate the effect of different concentrations of a homogeneous solution
of citrus essential oil containing D-Limonene on papaya disinfestation in the postharvest process, on extending shelf life and its effect on fruit quality. An in loco
experiment was carried out with 'THB' papaya fruits, carried out in a packing house at
Fazenda Caliman Agrícola AS. The experimental design was in randomized blocks
with six treatments, consisting of four doses of D-Limonene (3000, 4000, 5000, 6000
ppm), a negative control treatment (water) and a conventional standard farm treatment
(20 ppm of chlorine), each with four replicates. The fruits were exposed to two tests:
fruit storage at 16 °C + 2 °C with evaluations after 8 and 11 days of storage, in which
the physicochemical quality was evaluated; in the second trial, the fruits were stored
at a temperature of 25°C and evaluated after 7 days of storage to evaluate the
incidence of diseases. The results indicated that there was no statistically significant
interaction between D-Limonene doses and storage time, for any of the characteristics
evaluated. The incidence of diseases was low and was not related to the treatments,
a result linked to the high health of the fruits studied. The physicochemical quality of
the fruits was not affected by the treatments. It is concluded that the concentrations of
D-limonene can be used in papaya post-harvest as they do not affect the quality of the
fruit, however, to prove the sanitizing effect, basic research studies should be
conducted, with inoculum control.
