Table 1 Chemicals information
Chemical | Supplier |
|---|---|
Acetic acid, ethanol (99.5 %) | Ecibra (Sao Paulo, Brazil) |
Hexane | Synth (Diadema, Brazil) |
Chloroform, ethyl acetate, silica plates | Merck (Darmstadt, Germany) |
2-Aminoethyl-diphenylborinate (NP), 2,2-diphenyl-1-picrylhydrazyl (DPPH), p-anisaldehyde | Sigma Aldrich (Saint Louis, USA) |
Standards (purity >90 %): gallic acid protocatechuic acid, p-hydroxybenzoic acid, syringic acid, p-coumaric acid, ferulic acid, quercetin, rutin, catechin, resveratrol | |
HPLC grade: acetonitrile, methanol | Tedia (Rio de Janeiro, Brazil) |