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| Author(s): |
Barbara Della Antonia
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Piracicaba. |
| Institution: | Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) |
| Defense date: | 2020-07-07 |
| Examining board members: |
Angelo Pedro Jacomino;
Poliana Cristina Spricigo;
Gustavo Henrique de Almeida Teixeira
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| Advisor: | Angelo Pedro Jacomino |
| Abstract | |
Cherry of the Rio Grande (Eugenia involucrata DC.), which belongs to the Myrtaceae family, is native from Brazil and to the Atlantic Forest biome. It has dark red fruit, sweet flavor, and high content of bioactive compounds. Similar to other native Myrtaceae, it has nutritional and functional properties. Nevertheless, studies on phenotypic variability and postharvest behavior are required before this fruit becomes commercially exploited. The aim of this study was to characterize cherries of the Rio Grande from different accessions and to establish the harvesting point of the fruit. To characterize the accessions, fruit from 46 accessions were analyzed regarding physical-chemical characteristics, bioactive compounds, and antioxidant capacity. It was observed fruit had from 1 to 2 seeds; average pulp yield of 84,30%; and average ratio values of 11,43. High concentrations of bioactive compounds and high antioxidant capacity were observed. Three stages of fruit harvesting were determined according to external coloring and the fruit were stored at 22°C ± 1°C for ripeness characterization. Fruit were analyzed daily for respiratory activity and ethylene production. Physicochemical, bioactive compounds and antioxidant capacity analyses were performed on the first and last day of fruit shelf life, which varied according to the ripening stage at which they were harvested. Fruit harvested at stages 1 and 2 exhibited changes in the characteristics studied but did not reach a comparable quality to that presented by fruit harvested at the most advanced stage - stage 3. During storage, changes in respiratory activity and ethylene production were observed only for 1 and 2 stages, while stage 3 showed no changes. Fruit harvested in stage 3 of ripeness had a 2-day postharvest shelf life. Results indicated cherry of the Rio Grande as a fruit rich in nutraceutical compounds, with emphasis on CE027 accession, and the proper harvest point was stage 3 maturation. Cherry of the Rio Grande has great potential of use, not only for food purposes, but also for the pharmaceutical and cosmetic industries. (AU) | |
| FAPESP's process: | 19/04706-1 - Characterization of accessions and ripening stages of Rio-Grande cherry (Eugenia involucrata DC.) |
| Grantee: | Barbara Della Antonia |
| Support Opportunities: | Scholarships in Brazil - Master |