Maceration of Extra Virgin Olive Oil with Common Aromatic Plants Using Ultrasound-Assisted Extraction: An UV-Vis Spectroscopic Investigation

Table 1

The absorbance of olive oil samples after maceration at selected wavelengths (relative standard deviation 4%).

	Maceration	Duration	A670	A470	A415	A370	A300
Pure (unmacerated) olive oil sample			0.0259	0.0870	0.1248	0.0884	0.5749
(1) Rosemary powder	Conventional	20 h	0.0839	0.1347	0.2985	0.2129	1.3177
	Ultrasound	10 min	0.1915	0.2476	0.6415	0.4672	2.2426
(2) Common fennel powder	Conventional	20 h	0.0626	0.1061	0.2317	0.1613	2.6744
	Ultrasound	15 min	0.0698	0.1180	0.2650	0.1943	2.2370
(3) Lemon myrtle powder	Conventional	20 h	0.0764	0.0994	0.2506	0.1646	0.8484
	Ultrasound	15 min	0.0840	0.1129	0.2871	0.1996	0.8581
(4) Wild thyme leaves	Conventional	20 h	0.1317	0.1826	0.3986	0.2345	0.8838
	Ultrasound	15 min	0.0741	0.1404	0.2671	0.1950	0.8814
(5) Garden sage leaves	Conventional	20 h	0.0571	0.1047	0.2172	0.1832	1.2365
	Ultrasound	15 min	0.0384	0.0975	0.1694	0.1411	0.9427
(6) Summer savory leaves	Conventional	8 h	0.0815	0.1228	0.2620	0.1644	0.6307
	Ultrasound	10 min	0.1061	0.1552	0.3429	0.2210	0.6436
(7) Laurel powder	Conventional	20 h	0.2163	0.1624	0.5881	0.3348	0.8581
	Ultrasound	15 min	0.9808	0.4258	2.4472	1.3271	1.9213
(8) Garden sage powder	Conventional	20 h	0.0611	0.1152	0.2642	0.2320	1.1561
	Ultrasound	10 min	0.1524	0.1688	0.5267	0.5075	2.0867
(9) Nettle leaves	Conventional	72 h	0.0634	0.1329	0.2368	0.1456	0.6346
	Ultrasound	60 min	0.0648	0.1566	0.2535	0.1658	0.6654
(10) Lemon grass powder	Conventional	7 days	0.5572	0.1406	1.3329	0.8488	1.3519
	Ultrasound	60 min	0.5629	0.1090	1.2527	0.7785	1.2413