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Table 3 Antioxidant activity of mint extracts determined through the measurement of TBARS in a cooked meat system1

From: Polyphenol composition and antioxidant potential of mint leaves

Samples added to pork

Sample concentration

TBARS (mg MDA equivalents/kg meat)

(mg /g pork)

Day 0

Day 2

Day 5

Day 7

Day 10

Day 14

Control

–

3.84 ± 1.31a1

4.61 ± 0.11ab1

4.75 ± 0.11bc1

4.34 ± 0.09ab1

4.71 ± 0.25b1

5.53 ± 0.11c1

BHA

0.25

1.07 ± 0.13a23

1.02 ± 0.04a2

0.73 ± 0.04a2

0.57 ± 0.04a2

0.76 ± 0.04a2

0.83 ± 0.02a2

Medina mint – soluble extract

1.73

0.88 ± 0.08a2

1.06 ± 0.07a2

1.46 ± 0.08ab23

1.37 ± 0.05ab23

2.05 ± 0.04b3

1.89 ± 0.08b3

Medina mint – soluble extract, not dechlorophyllized

2.07

0.75 ± 0.08a2

1.04 ± 0.02ab2

1.44 ± 0.02ab23

1.76 ± 0.14b3

1.58 ± 0.16b3

1.43 ± 0.04ab23

Medina mint – aqueous infusion

9.4

1.84 ± 1.56a3

1.36 ± 0.11ab3

1.80 ± 0.03ab34

1.03 ± 0.02b23

3.43 ± 0.04c4

4.49 ± 0.08d4

Hasawi mint – soluble extract

3.8

0.81 ± 0.12a2

2.52 ± 0.09bd4

2.50 ± 0.01b45

3.27 ± 0.06bc4

3.67 ± 0.11c4

3.30 ± 0.18cd5

Hasawi mint – aqueous infusion

22.57

0.69 ± 0.01a2

2.38 ± 0.11bc24

2.94 ± 0.16b5

2.57 ± 0.02bc4

1.95 ± 0.02cd3

1.39 ± 0.11ad23

  1. 1Data are expressed as mean ± SD (n = 3). Values with the same letter (a to d), in the same row are not significantly different (p > 0.05). Values with the same superscript number (1 to 5), in the same column are not significantly different (P > 0.05). The concentration of sample as mg/g pork is equivalent to 200 ppm gallic acid equivalents calculated from total phenolic content. Abbreviations are: MDA, malondialdehyde; and BHA, butylated hydroxyanisole