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Table 7 Influence of ethephon on the total polyphenol contents of the extracted oils and their diffusion rates during ripening

From: Effect of ethephon application on the cellular maturity of Olea europaea L. and on the extractability of phenolic compounds in virgin olive oil

Sample

Total polyphenol content of the olives (mg/g olive pulp)

Total polyphenol contents diffusible in extracted oils (mg/kg pulp of olive)

% of diffusion in oils

Control

Ethephon (N)

Ethephon (V)

Control

Ethephon (N)

Ethephon (V)

Control

Ethephon (N)

Ethephon (V)

09-September

75.2 ± 1.9

1331.1 ± 13.9

1.77 ± 0.06

21-September

58.8 ± 2a

69.6 ± 1b

52.7 ± 1.8a

804.6 ± 47.9a

1291.9 ± 54.2b

801.3 ± 10.1a

1.37 ± 0.12a

1.86 ± 0.1b

1.52 ± 0.04a

03-October

69.1 ± 2.1a

58.8 ± 2.3b

71.9 ± 1b

685.5 ± 64a

1017.4 ± 48.1b

1059.7 ± 70.8b

1 ± 0.8a

1.73 ± 0.07b

1.47 ± 0.11b

14-October

50.7 ± 2.4a

53.9 ± 1.5b

56.7 ± 2.4b

573.7 ± 54.1a

692.2 ± 48b

715.7 ± 155b

1.14 ± 0.16a

1.28 ± 0.05b

1.26 ± 0.21b

25-October

52.4 ± 1.5a

59.1 ± 6.5b

52.9 ± 1a

446.5 ± 91.1a

539.2 ± 84.9b

589.3 ± 147.3b

0.85 ± 0.15a

0.92 ± 0.21b

1.11 ± 0.26b

07-November

54.2 ± 1.3

366.3 ± 73.3

0.67 ± 0.13

19-November

66.9 ± 1.7

306.2 ± 12.9

0.46 ± 0.02

05-December

69.9 ± 1.4

216.1 ± 74.9

0.31 ± 0.11

  1. a, bValues followed by different letters are significantly different (P = 0.05)
  2. Ethephon (N): treatment at fruit set; ethephon (V): treatment at veraison