Pedra-ume caá fruit: An Amazon cherry rich in phenolic compounds with antiglycant and antioxidant properties

• Published in: Food research international Vol. 123; pp. 674 - 683
• Main Authors: Ramos, Andrezza S., Mar, Josiana M., da Silva, Laiane S., Acho, Leonard D.R., Silva, Bárbara Janaína P., Lima, Emerson S., Campelo, Pedro H., Sanches, Edgar A., Bezerra, Jaqueline A., Chaves, Francisco Célio M., Campos, Francinete R., Machado, Marcos B.
• Format: Journal Article
• Language: English
• Published: Canada Elsevier Ltd 01-09-2019
• Subjects: Chemometrics; ERETIC2; Eugenia punicifolia (Kunth) DC; HPLC; Mass spectrometry; Microencapsulation; NMR; Nutraceutical; NMR; ERETIC2; Eugenia punicifolia (Kunth) DC; Nutraceutical; Microencapsulation; Mass spectrometry; HPLC; Chemometrics
• ISSN: 0963-9969; 1873-7145
• DOI: 10.1016/j.foodres.2019.05.042

Species of Eugenia have been used as an antidiabetic natural source. Chemical, antioxidant and antiglycant screening of extracts from pedra-ume caá (Eugenia punicifolia) fruits were performed. 1H NMR assisted by non-supervised chemometric methods were employed for the evaluation of the chemical profiles which were distinguished according to the color of fruit maturation stages, as well as for pulp and seed fruit. Furthermore, 1H NMR fingerprint analysis of the crude extract allowed the identification of quercitrin and myricitrin, beside other nine compounds. The extracts of the yellow (YP) and green (GP) pulps presented higher antiglycant and antioxidant activities. Fresh juice from E. punicifolia was encapsulated in microcapsules produced with dextrose equivalent (DE) of 10, 20 or 30 as wall materials for the maintainment of their antioxidant and antiglycant properties. The more efficient retention of the bioactive compounds was found using the DE30. The Encapsulation Efficiency (EE) and the Retention Efficiency (RE) of this system was found around 89.7% and 97.6%, respectively. In addition, NMR spectra revealed the presence of flavonoids O-glycosylated (quercitrin and myricitrin) which might be related to the antiglycant and antioxidant activities. The YP presented larger content of quercitrin (117.6 ± 0.4 mg per each 100 g of fresh fruit). Therefore, pedra-ume caá should be employed as an alternative nutraceutical source, as well as intherapeutic pourposes.
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•Phenolic compounds from pedra-ume caá cherry have been characterized.•Phenological stages of Amazon cherry were distinguish by NMR and chemometric tools.•Antiglycant and antioxidant activities from Eugenia punicifolia fruits are shown.•Microcapsules with Eugenia punicifolia juice preserved biochemical activities.•The fruit in yellow stage has shown the best antiglycant and antioxidant properties.