Characterization of sterolic and alcoholic fractions of some Algerian olive oils according to the variety and ripening stage

Hasna Boulkroune; Aida Lazzez; Mokhtar Guissous; Yuva Bellik; Sami Smaoui; Naziha Grati Kamoun; Toufik Madani

doi:10.1051/ocl/2017026

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Volume 24 / No 5 (September-October 2017)

OCL, 24 5 (2017) A502

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

^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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