Open Access

Table 2

Sterolic composition (mg cholestanol/kg oil) of Aghenfas,Buichret,Chemlal and Mekki virgin olive oils during the maturity stage.

  End Sep Mid-Oct End Oct Mid-Nov End Nov Mid-Dec End Dec Mid-Jan
Cholesterol                
Chemlal 4.8 ± 0.3b 3.9 ± 0.2a 5.3 ± 0.2b 3.5 ± 0.5a 4.9 ± 0.4b 3.8 ± 0.2a 3.8 ± 0.3a 3.4 ± 0.2a
Aghenfas 1.1 ± 0.3a 1.2 ± 0.3a 1.1 ± 0.1a 1.8 ± 0.6a,b 1.3 ± 0.3a 2.1 ± 0.4a,b 2.2 ± 0.2a,b 2.5 ± 0,0b
Buichret 1.2 ± 0.4a 2.0 ± 0.3a,b 1.8 ± 0.1a,b 2.6 ± 0.3b 3.0 ± 0.3b 3.4 ± 0.2b 3.1 ± 0.2b 1.3 ± 0.4a
Mekki 3.9 ± 0.5c 5.0 ± 0.1c,d 5.7 ± 0.1d 4.5 ± 0.3c 4.3 ± 0.0c 2.6 ± 0.1b 2.0 ± 0.3a 3.2 ± 0.5b
Campesterol                
Chemlal 61.7 ± 5.2c 65.8 ± 4.1c 51.9 ± 3.4b 48.2 ± 2.3b 54.8 ± 2.6c 47.6 ± 3.3b 45.8 ± 3.8b 39.2 ± 4.0a
Aghenfas 80.8 ± 6.6e 72.7 ± 2.9d 55.2 ± 2.1b 65.1 ± 3.2c 51.5 ± 3.7b 43.4 ± 2.5a 51.8 ± 3.5b 41.3 ± 2.4a
Buichret 32.8 ± 2.4a 46.8 ± 2.4b 34.7 ± 3.7a 36.0 ± 3.7a,b 29.0 ± 2.3a 33.2 ± 2.2a 37.9 ± 2.7a,b 41.8 ± 3.1a,b
Mekki 56.2 ± 4.1b 45.2 ± 4.3a,b 52.2 ± 2.0b 35.1 ± 4.6a 34.54 ± 5.31a 43.13 ± 3.09a,b 37.80 ± 1.49a 34.86 ± 2.71a
Campestanol                
Chemlal 0.6 ± 0.2a 0.7 ± 0.1a 1.4 ± 0.3b 2.9 ± 0.3c 3.7 ± 0.3d 2.9 ± 0.2c 3.5 ± 0.2d 3.4 ± 0.5d
Aghenfas 1.8 ± 0.3a 1.6 ± 0.1a 1.5 ± 0.2a 2.1 ± 0.2a,b 1.5 ± 0.3a 1.9 ± 0.3a 2.8 ± 0.1b 3.4 ± 0.4c
Buichret 0.5 ± 0.2a 0.7 ± 0.3a 0.7 ± 0.2a 0.5 ± 0.1a 1.5 ± 0.3b 2.5 ± 0.3c 2.5 ± 0.1c 2.7 ± 0.4c
Mekki 0.8 ± 0.4 0.7 ± 0.2a 0.8 ± 0.1a 1.8 ± 0.1b 1.3 ± 0.0a,b 2.6 ± 0.4b,c 2.2 ± 0.2b 3.0 ± 0.4c
Stigmasterol                
Chemlal 18.1 ± 1.3a,b 17.8 ± 2.3a,b 14.6 ± 1.4a 16.5 ± 1.1a,b 17.4 ± 2.2a,b 11.6 ± 2.1 12.9 ± 1.3a 21.2 ± 2.7b
Aghenfas 9.2 ± 1.6a 10.9 ± 0.9a 12.1 ± 1.4a,b 9.7 ± 1.0a 13.2 ± 1.2a,b 16.1 ± 0.9b 13.8 ± 1.5a,b 10.5 ± 2.0a
Buichret 14.3 ± 1.6b 14.0 ± 2.5b 12.8 ± 3.4b 9.1 ± 1.2a,b 8.3 ± 1.8a 5.5 ± 0.9a 7.0 ± 1.3a 8.0 ± 1.6a
Mekki 7.7 ± 1.2a 7.2 ± 2.2a 12.9 ± 1.7b 6.9 ± 1.1a 12.6 ± 3.1b 12.5 ± 1.4b 17.2 ± 1.7c 18.1 ± 3.0c
Clerosterol                
Chemlal 16.6 ± 0.8a,b 15.7 ± 0.5a,b 16.1 ± 0.6a,b 17.2 ± 0.6a,b 20.0 ± 2.2c 18.7 ± 1.2b,c 12.7 ± 1.4a 14.1 ± 0.1a
Aghenfas 16.2 ± 0.9b 19.9 ± 0.6b,c 18.2 ± 0.5b 19.4 ± 1.2b,c 20.0 ± 2.7c 13.2 ± 1.6a 17.2 ± 0.2b 16.5 ± 1.4b
Buichret 17.9 ± 1.6b 18.6 ± 2.2b 16.1 ± 1.9b 17.8 ± 1.3b 11.8 ± 0.8a,b 10.5 ± 0.6a,b 7.3 ± 1.9a 9.2 ± 1.2a
Mekki 15.7 ± 0.6a,b 18.1 ± 2.1a,b 18.5 ± 1.2a,b 11.9 ± 1.7a 18.7 ± 2.1b 12.2 ± 1.0a 14.2 ± 2.0a 13.1 ± 1.3a
β-sitosterol                
Chemlal 1976.1 ± 21.7d 1849.8 ± 49.1c 1722.7 ± 35.3b,c 1667.0 ± 52.6a,b 1584.7 ± 40.0a,b 1558.4 ± 80.8a 1468.4 ± 45.8a 1558.0 ± 59.7a
Aghenfas 2123.6 ± 10.9d 1951.4 ± 50.5c 1812.0 ± 42.6b 1758.4 ± 38.1b 1631.8 ± 55.7a 1556.2 ± 56.0a 1631.0 ± 26.3a 1608.0 ± 44.3a
Buichret 1398.9 ± 23.7e 1462.6 ± 17.3f 1265.4 ± 12.7d 1128.2 ± 27.2c 1033.2 ± 24.7b 1004.8 ± 8.4b 966.7 ± 14.1a 1051.4 ± 15.1b,c
Mekki 1738.0 ± 15.6d 1650.6 ± 30.1c 1612.2 ± 12.3c 1544.0 ± 44.5b 1411.9 ± 41.7a 1420.9 ± 18.6a 1425.5 ± 35.1a 1362.1 ± 45.4a
Δ5-avenasterol                
Chemlal 73.0 ± 4.6b 56.1 ± 5.4a 109.2 ± 8.8c 184.3 ± 12.1e 246.0 ± 14.0g 221.5 ± 2.8f 178.0 ± 8.9e 139.2 ± 10.8d
Aghenfas 47.5 ± 6.7a 101.5 ± 11.2b 189.2 ± 3.5c 268.5 ± 7.2e 315.0 ± 13.9f 226.6 ± 11.0d 223.5 ± 3.2d 258.6 ± 7.9e
Buichret 52.7 ± 2.7a 96.8 ± 4.1b 113.2 ± 9.8c 161.0 ± 3.2e 162.8 ± 7.4e,f 169.0 ± 8.6e,f 146.8 ± 2.7d 174.0 ± 9.5f
Mekki 88.0 ± 3.4a 133.9 ± 4.4b 251.17 ± 8.70c 318.0 ± 4.4f 321.2 ± 12.08f 343.6 ± 6.8g 297.7 ± 5.3e 281.3 ± 9.8d
Δ5,24-stigmastadienol                
Chemlal 10.3 ± 1.1a 17.8 ± 0,5c 15.6 ± 2.2b,c 9.6 ± 0.8a 13.4 ± 0.6b 15.6 ± 1.5b,c 9.1 ± 0.9a 13.5 ± 1.3b
Aghenfas 4.5 ± 0.7a 13.2 ± 1.4c 16.5 ± 1.1d 16.8 ± 1.6d 12.0 ± 1.5c 9.4 ± 1.5b 19.4 ± 0.8e 16.8 ± 0.3d
Buichret 13.6 ± 1.8c 11.3 ± 1.1a,b 8.0 ± 0.6a 12.8 ± 0.1b,c 9.4 ± 0.6a,b 8.7 ± 1.0a 6.8 ± 1.0a 10.0 ± 1.4a,b
Mekki 9.7 ± 0.8a 16.7 ± 0.9b 14.7 ± 1.2b 15.1 ± 0.2b 11.3 ± 1.6a,b 8.5 ± 1.2a 18.0 ± 2.5c 17.0 ± 1.1b
Δ7-stigmastenol                
Chemlal 2.7 ± 0.3a 3.1 ± 0.5a,b 2.2 ± 0.4a 4.1 ± 0.2b 3.1 ± 0.1a,b 4.6 ± 0.4b 4.1 ± 0.2b 5.0 ± 0.2b
Aghenfas 4.7 ± 0.8b,c 4.4 ± 0.7b 4.44 ± 0.34b 2.1 ± 0.4a 6.0 ± 0.1c 3.8 ± 0.3b 4.7 ± 0.8b,c 2.2 ± 0.3a
Buichret 5.9 ± 0.4c 3.7 ± 0.3a 4.3 ± 0.3a 4.0 ± 0.2a 4.8 ± 0.3a,b 5.5 ± 0.3b,c 4.5 ± 0.5a,b 3.8 ± 0.8a
Mekki 5.1 ± 0.9a 7.1 ± 0.2b 7.0 ± 0.3a,b 6.8 ± 0.5a,b 5.0 ± 0.4a 7.0 ± 1.0a,b 6.1 ± 0.7a,b 4.2 ± 0.3a
Δ7-avenasterol                
Chemlal 6.2 ± 0.4a 8.6 ± 0.8b 5.0 ± 0.7a 7.0 ± 0.3a,b 6.7 ± 1.3a,b 5.7 ± 0.5a 6.43 ± 0.5a,b 8.50 ± 1.2b
Aghenfas 15.2 ± 2.9b 11.4 ± 0.7a,b 7.2 ± 1.0a 8.8 ± 0.3a 11.6 ± 0.5a,b 9.6 ± 0.8a 8.5 ± 1.5a 12.3 ± 1.4a,b
Buichret 7.5 ± 0.1b 7.0 ± 0.9a,b 5.4 ± 1.3a 4.9 ± 0.1a 5.87 ± 0.4a,b 4.5 ± 0.3a 4.5 ± 0.8a 5.0 ± 0.5a
Mekki 7.9 ± 1.3b 11.9 ± 0.4b,c 9.4 ± 0.6b 8.4 ± 1.0b 14.2 ± 2.0c 5.1 ± 0.5a 7.6 ± 1.4b 10.92 ± 1.0b,c
Total Sterol                
Chemlal 2170.2 ± 34.6c 2039.4 ± 47.0b,c 1944.3 ± 25.8a,b 1960.6 ± 37.8a,b 1954.85 ± 32.03a,b 1890.40 ± 75.60a,b 1744.86 ± 61.9a 1805.8 ± 69.9a
Aghenfas 2304.6 ± 13.2d 2188.2 ± 35.0c,d 2117.8 ± 38.7c 2152.9 ± 38.0c,d 2064.0 ± 35.3c 1882.3 ± 71.7a 1974.9 ± 20.2b 1972.1 ± 46.7b
Buichret 1545.3 ± 29.3f 1663.9 ± 14.0g 1462.7 ± 29.75e 1377.1 ± 31.4d 1269.9 ± 29.9b 1247.7 ± 17.2b 1187.4 ± 15.6a 1307.3 ± 27.7b,c
Mekki 1933.2 ± 18.5b,c 1896.7 ± 30.3b,c 1984.7 ± 24.1c 1952.6 ± 41.6b,c 1835.1 ± 29.0b 1858.3 ± 29.7b 1828.4 ± 43.0a 1747.8 ± 74.7b
Erythrodiol + Uvaol                
Chemlal 31.0 ± 2.6b 20.7 ± 1.2a 21.0 ± 2.3a 19.8 ± 1.2a 18.2 ± 2.0a 20.7 ± 1.7a 18.8 ± 0.9a 18.4 ± 1.1a
Aghenfas 57.9 ± 1.1d 53.6 ± 3.2c 52.2 ± 4.2c 31.9 ± 2.5b 34.4 ± 1.5b,c 29.4 ± 2.5b 30.1 ± 1.4b 18.3 ± 0.7a
Buichret 29.1 ± 1.8d 30.9 ± 1.9c 33.2 ± 2.3c 32.2 ± 1.7b 38.5 ± 2,6b,c 31.1 ± 1.4b 24.7 ± 2.1b 22.1 ± 1.2a
Mekki 32.3 ± 2.5b 32.7 ± 1.5b 45.9 ± 3.4d 42.7 ± 2.5c,d 41.5 ± 2.5c 37.9 ± 1.9c 33.8 ± 1.8b 23.0 ± 2.8a

a,b,c,d Values with the same letter in the same line are not significantly different at a 95% confidence level (P ≤ 0.05).

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