Olive leaves, a waste from olive oil production, represent a good source of bioactive compounds, exploitable as natural preservatives in foods for their antioxidant and antimicrobial activities. In this frame, olive leaf extract (OLE) was added in non-thermally stabilized olive-based-paste at two different concentrations (0.5 and 1 g kg-1), and the samples were stored for 90 days. Antioxidant and antimicrobial activity were evaluated by means of ABTS-TEAC assay and microbiological analyses. The samples added with OLE showed the highest value of antioxidant activity. The main microbial groups registered a significant loss (of about 0.5-1 logarithmic cycles) when OLE was added.
|Titolo:||Olive leaf extract as natural preservative|
|Data di pubblicazione:||2019|
|Appare nelle tipologie:||1.1 Articolo in rivista|