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Table 1 Effect of solvents extraction on antioxidant activity (IC50. mg mL−1) of both date palm seeds

From: Effect of solvents extraction on phytochemical components and biological activities of Tunisian date seeds (var. Korkobbi and Arechti)

Extracts

IC 50

DPPH

ABTS

FRAP

TBARS

KS

Methanol extract

0,74 ± 0,02b

0,40 ± 0,09a

0,27 ± 0,01b

0,42 ± 0,02a

Aqueous extract

0,35 ± 0,01a

0,37 ± 0,03a

0,12 ± 0,01a

0,32 ± 0,02a

Acetone 80%

1,41 ± 0,81c

0,82 ± 0,04b

0,46 ± 0,03c

0,75 ± 0,09b

Acetone 100%

1,88 ± 0,67d

1,13 ± 0,34c

0,73 ± 0,045d

0,99 ± 0,07c

AS

Methanol extract

0,61 ± 0,04B

0,53 ± 0,05A

0,26 ± 0,01A

0,47 ± 0,09A

Aqueous extract

0,58 ± 0,09A

0,48 ± 0,07A

0,19 ± 0,01A

0,42 ± 0,05A

Acetone 80%

1,61 ± 0,53C

1,19 ± 0,98B

0,71 ± 0,08B

0,98 ± 0,09B

Acetone 100%

2,01 ± 0,98D

1,40 ± 0,65B

0,86 ± 0,04B

1,22 ± 0,07C

  1. Data expressed as means ± standard deviations of three independent extractions (n = 3)
  2. IC50: The concentration at which 50% of radicals are scavenged, Fe3+ is reduced and TBARS is inhibited
  3. Different lower case letters and capital letters in the same column for each type of material indicate significant effect differences between the different used solvents extraction (P < 0.05)
  4. KS Korkobbi seed, AS Arechti seed