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http://hdl.handle.net/1843/39627| Type: | Artigo de Periódico |
| Title: | Phenolic acids and flavonoids of peanut by-products: antioxidant capacity and antimicrobial effects |
| Authors: | Adriano Costa de Camargo Marisa Aparecida Bismara Regitano-d'Arce Gabriela Boscariol Rasera Solange Guidolin Canniatti-Brazaca Leonardo do Prado-Silva Verônica Ortiz Alvarenga Anderson de Souza Sant'Ana Fereidoon Shahidi |
| Abstract: | Peanut skin (PS) and meal from dry-blanched peanuts (MDBP) were evaluated as sources of phenolic compounds. PS rendered the highest total phenolic content, antioxidant capacity towards ABTS radical cation, DPPH and hydroxyl radicals as well as reducing power. Phenolic acids were present in PS and MDBP whereas proanthocyanidins and monomeric flavonoids were found only in PS as identified by HPLC-DAD-ESI-MSn. Procyanidin-rich extracts prevented oxidation in non-irradiated and gamma-irradiated fish model system. Both extracts inhibited the growth of gram-positive (Bacillus cereus, Staphylococcus aureus, Listeria monocytogenes, Geobacillus stearothermophilus) and gram-negative bacteria (Pseudomonas aeruginosa, Pseudomonas fluorescens, Salmonella Enteritidis, Salmonella Typhimurium, Escherichia coli). Regardless of the strain, phenolic acid-rich extracts showed the lowest minimum inhibitory capacity (MIC); therefore presenting higher antibacterial effect. The MIC of phenolic acid-rich extracts (24–49 μg phenolics/mL) was higher but comparable to Ampicillin (10 μg/mL). Thus, phenolics in PS and MDBP may serve as antioxidants and antimicrobial compounds. |
| Subject: | Tecnologia de alimentos Amendoim |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | FAR - DEPARTAMENTO DE ALIMENTOS |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | 10.1016/j.foodchem.2017.05.046 |
| URI: | http://hdl.handle.net/1843/39627 |
| Issue Date: | 2017 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/abs/pii/S0308814617308245?via%3Dihub |
| metadata.dc.relation.ispartof: | Food Chemistry |
| Appears in Collections: | Artigo de Periódico |
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