Determination of Alkyl Esters Content in PDO Extra Virgin Olive Oils from Sicily

Table 2

Content of fatty acid alkyl esters (FAAEs), peroxide value, and free acidity in extra virgin olive oils. FAEEs: fatty acid ethyl esters; FAMEs: fatty acid methyl esters.

Sample number	FAEEs (mg/kg)	FAMEs (mg/kg)	FAAEs (mg/kg)	FAEEs/FAMEs	Acidity (%)	Peroxides (mEq/O2/kg)
1	2.0	1.4	3.4	1.4	0.3	6.8
2	6.3	5.9	12.2	1.1	0.4	5.6
3	2.4	1.4	3.8	1.7	0.5	10.5
4	2.6	1.5	4.1	1.7	0.3	6.1
5	1.2	0.9	2.1	1.4	0.1	7.2
6	1.8	1.8	3.6	1.0	0.2	11.2
7	7.5	16.4	23.9	0.5	0.4	6.1
8	1.5	1.2	2.7	1.3	0.3	5.2
9	14.5	10.8	25.3	1.3	0.3	4.5
10	3.1	2.3	5.4	1.4	0.3	5.3
11	3.9	4.7	8.6	0.8	0.5	7.8
12	4.7	4.2	8.9	1.1	0.3	8.4
13	1.6	1.4	3.0	1.2	0.3	9.2
14	2.2	2.4	4.6	0.9	0.6	18.0
15	1.5	1.1	2.6	1.4	0.6	12.3
16	2.2	3.2	5.4	0.7	0.5	6.4
17	1.2	0.7	1.9	1.8	0.4	7.2
18	1.0	0.6	1.6	1.7	0.3	5.1
19	1.7	1.4	3.1	1.2	0.4	8.3
20	2.6	2.8	5.4	0.9	0.4	7.6
21	4.5	4.7	9.2	0.9	0.5	10.5
22	15.8	5.8	21.6	2.7	0.5	6.7
23	31.8	20.5	52.3	1.6	0.5	7.3
24	8.6	10.5	19.1	0.8	0.6	5.7
25	35.0	23.9	58.9	1.5	0.5	6.8
26	2.2	1.6	3.8	1.4	0.7	11.3
27	4.4	4.5	8.9	1.0	0.2	6.5
28	1.6	0.7	2.3	2.3	0.2	6.0
29	1.5	1.1	2.6	1.4	0.2	6.9
30	2.8	1.5	4.3	1.9	0.3	7.8
31	1.5	1.4	2.9	1.1	0.3	6.8
32	3.3	1.5	4.8	2.2	0.3	5.6
33	7.0	4.4	11.4	1.6	0.4	6.4
34	12.0	6.4	18.4	1.9	0.4	6.1
35	86.0	58.5	144.5	1.5	6.8	58.0
36	70.0	44.2	114.2	1.6	5.6	45.0
37	70.0	74.0	144.0	0.9	8.5	70.0
38	85.0	39.1	124.1	2.2	6.1	56.0
39	74.0	36.6	110.6	2.0	7.2	62.0
40	79.0	33.9	112.9	2.3	8.1	60.0