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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