COMPARATIVE ACTIVITY OF TOTAL POLYPHENOLS AND ANTIOXIDANT COMPOUNDS FROM UNCARIA TOMENTOSA ENHANCED WITH CITRIC ACID
| Autor: | Raiza Felismino Silveira, Angela Vacaro de Souza, Eduardo Vicente, Priscilla Ayleen Bustos Mac-Lean, Camila Katerine Aranda Medina, Fernando Ferrari Putti, Cesar Augusto Roque Borda |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
food.ingredient
Antioxidant ABTS biology DPPH Food additive medicine.medical_treatment 010401 analytical chemistry 04 agricultural and veterinary sciences biology.organism_classification 040401 food science 01 natural sciences 0104 chemical sciences chemistry.chemical_compound 0404 agricultural biotechnology food chemistry Polyphenol visual_art visual_art.visual_art_medium medicine Uncaria tomentosa Bark Food science Citric acid |
| Zdroj: | Revista Brasileira de Engenharia de Biossistemas. 15:69-89 |
| ISSN: | 2359-6724 1981-7061 |
| DOI: | 10.18011/bioeng2021v15n1p69-89 |
| Popis: | Uncaria tomentosa, a climbing vine notable for containing high concentrations of oxindole alkaloids and phenolic compounds, is commonly used in traditional medicine as an anti-inflammatory and antioxidant agent. Also, the citric acid is a food additive widely used for conservation, due to its low cost. In this way, this study aims to evaluate the content of phenolic compounds from Uncaria tomentosa and investigate its antioxidant activity when citric acid, at different concentrations, is added to the extract. For this purpose, a gradient of citric acid concentrations was established, and the antioxidant profile from a aqueous extracts of the plant leaves and bark was analyzed by Folin-Ciocalteu essay; inhibition of the free radical of 2,2-diphenyl-1-picrylhydrazyl (DPPH); ferric reducing antioxidant power (FRAP), and scavenging capacity of cationic free radicals of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). The results showed a synergistic effect between citric acid and antioxidant compounds from Uncaria tomentosa, presenting highly statistical significance, the synergistic effect was more efficient in the bark than in the leaves. |
| Databáze: | OpenAIRE |
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