Olive leaf extract as natural preservative

Difonzo, G.; Squeo, G.; Calasso, M.; Pasqualone, A.; Summ, C.; Paradiso, V. M.; Silletti, R.; Gambacorta, G.; Faccia, M.; Caponio, F.

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
Autori:	Difonzo G. Squeo G. Calasso M. Pasqualone A. Summ C. PARADISO, VITO MICHELE Silletti R. GAMBACORTA, Giuseppe Faccia M. Caponio F. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2019
Rivista:	ITALIAN JOURNAL OF FOOD SCIENCE
Abstract:	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.
Handle:	http://hdl.handle.net/11587/441456
Appare nelle tipologie:	Articolo pubblicato su Rivista

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