Ripe Ora-pro-nobis (Pereskia aculeata miller) fruits express high contents of bioactive compounds and antioxidant capacity

Author(s)

Aline Priscilla Gomes da Silva ^[1] ; Poliana Cristina Spricigo ^[1] ; Thais Pádua de Freitas ^[3] ; Thiago Machado da Silva Acioly ^[1] ; Severino Matias de Alencar ^[3] ; Angelo Pedro Jacomino ^[1]

Affiliation

^[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Crop Sci Departament, Postharvest Lab Hort Prod, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[2] University of São Paulo, “Luiz de Queiroz” College of Agriculture. Departamento de Ciências Agrárias - Brasil

^[3] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Dept Agri Food Ind Food & Nutr, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

• Document type: Journal article
• Source: Revista Brasileira de Fruticultura; v. 40, n. 3 2018-07-10.

Abstract

Abstract Pereskia aculeata Miller is a native cactaceae found from the Northeast to the South of Brazil. This plant is recognized by the high nutritional value of their leaves, which are the most used in cooking and folk medicine. However, studies on the chemical characteristics and antioxidant capacity of the ora-pro-nobis fruits are scarce. Therefore, the aim of this study was to determine the best harvest point of the ora-pro-nobis fruits to optimize the content of bioactive compounds and their antioxidant capacity. The fruits were manually harvested, defined by their peel colors in three maturity stages: unripe (green), intermediate (yellowish green), and ripe (yellow) stages. The following attributes were evaluated: soluble solids (SS), titratable acidity (TA), SS/TA ratio, pH, and content of bioactive compounds, such as total chlorophylls, carotenoids, yellow flavonoids, total phenolic compounds, and antioxidant capacity. There was a decrease in the content of chlorophyll followed by an increase in the of total carotenoids and yellow flavonoids, due to the maturity stage. For the total phenolic compounds, it was not observed significant difference between the stages. The antioxidant capacity was quantified by the ORAC method in lyophilized pulp in the unripe (1.95 mmol 100 g-1 trolox) and ripe (3.85 mmol 100 g-1 trolox) stages. The lowest contents were observed in the intermediate (0.80 mmol 100 g-1 trolox in lyophilized pulp) stage. The maturity stage significantly influenced the bioactive compounds of ora-pro-nobis, which presented higher values of total carotenoids, yellow flavonoids, and antioxidant capacity in ripe fruits. (AU)

• FAPESP's process: 14/13473-7 - Characterization of cambuca, guamirim cereja, jabuticaba pendula and uvaia dura, native fruits from the Atlantic Forest
• Grantee: Aline Priscilla Gomes da Silva
• Support Opportunities: Scholarships in Brazil - Doctorate