Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Phenolic acids and flavonoids of peanut by-products: Antioxidant capacity and antimicrobial effects

Full text
Author(s):
de Camargo, Adriano Costa ; Bismara Regitano-d'Arce, Marisa Aparecida ; Rasera, Gabriela Boscariol ; Canniatti-Brazaca, Solange Guidolin ; do Prado-Silva, Leonardo ; Alvarenga, Veronica Ortiz ; Sant'Ana, Anderson S. ; Shahidi, Fereidoon
Total Authors: 8
Document type: Journal article
Source: Food Chemistry; v. 237, p. 538-544, DEC 15 2017.
Web of Science Citations: 27
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 mu g phenolics/mL) was higher but comparable to Ampicillin (10 mu g/mL). Thus, phenolics in PS and MDBP may serve as antioxidants and antimicrobial compounds. (C) 2017 Published by Elsevier Ltd. (AU)

FAPESP's process: 12/17683-0 - GAMMA RADIATION AS A TOOL FOR AGRO-INDUSTRIAL WASTES MICROBIOLOGICAL SAFETY AND ITS EFFECT ON THE ANTIOXIDANT PROPERTIES EVALUATED BY IN VITRO TESTS AND MODEL SYSTEMS
Grantee:Adriano Costa de Camargo
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 15/00336-4 - Enzyme assited extraction of insoluble-bound phenolics from grape by-products: antioxidant and bioactivity potential
Grantee:Adriano Costa de Camargo
Support Opportunities: Scholarships abroad - Research Internship - Doctorate