Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7585970 | Food Chemistry | 2018 | 34 Pages |
Abstract
The effects of fermentation by autochthonous microbial starters on phenolics composition of Apulian table olives, Bella di Cerignola (BDC), Termite di Bitetto (TDB) and Cellina di Nardò (CEL) were studied, highlighting also the cultivars influence. In BDC with starter, polyphenols amount doubled compared with commercial sample, while in TDB and CEL, phenolics remain almost unchanged. The main phenolics were hydroxytyrosol, tyrosol, verbascoside and luteolin, followed by hydroxytyrosol-acetate detected in BDC and cyanidine-3-glucoside and quercetin in CEL. Scavenger capacity in both DPPH and CAA assays, assessed the highest antioxidant effect for CEL with starters (21.7â¯mg Trolox eq/g FW; 8.5â¯Î¼mol hydroxytyrosol eq/100â¯gâ¯FW). The polyphenols were highly in vitro bioaccessible (>60%), although modifications in their profile, probably for combined effect of environment and microorganisms, were noted. Finally, fermented table olives are excellent source of health promoting compounds, since hydroxytyrosol and tyrosol are almost 8 times more than in olive oil.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Isabella D'Antuono, Angelica Bruno, Vito Linsalata, Fiorenza Minervini, Antonella Garbetta, Maria Tufariello, Giovanni Mita, Antonio F. Logrieco, Gianluca Bleve, Angela Cardinali,