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Table 3 Free radical scavenging activity of various extracts of cooked vegetable of L. siceraria as measured by DPPH assay

From: Influence of various cooking treatments and extraction solvents on bioactive compounds and antioxidant capacities of bottle gourd (Lagenaria siceraria) fruit in India

Treatments

DPPH (% Scavenging at 30 µg/ml)

IC-50 (µg/ml)

ME

EE

BE

Mean

ME

EE

BE

Mean

Raw (control)

79.3 ± 0.06dC

36.03 ± 0.13cA

49.9 ± 0.14bB

55.1c

22.54 ± 0.14aA

39.08 ± 0.23bC

33.51 ± 0.45bB

31.7b

Pressure cooked

44.4 ± 0.06aC

26.2 ± 0.25bA

38.4 ± 0.07aB

36.3a

32.70 ± 0.35cA

49.27 ± 0.56cC

40.21 ± 0.48cB

40.7c

Microwave cooked

61.4 ± 0.06cB

80.1 ± 0.29dC

58.2 ± 0.07cA

66.6d

25.50 ± 0.45bB

8.37 ± 0.28aA

28.47 ± 0.49aC

20.8a

Fried

47.0 ± 0.06bB

17.6 ± 0.19aA

59.8 ± 0.12dC

41.5b

34.41 ± 0.34dB

61.01 ± 0.20dC

28.06 ± 0.18aA

41.2d

Mean

58.0C

39.9A

51.6B

 

28.8A

39.4C

32.6B

 

F−Statistics for extraction solvents, F (2,24)=56278, p=0.000

F−Statistics for cooking treatments, F (3,24)= 93871, p=0.000

F−Statistics for interaction effect, F (6,24)=47365, p=0.000

F−Statistics for extraction solvents, F (2,24)=2542.7, p=0.000

F−Statistics for cooking treatments, F (3,24)= 6018.6, p=0.000

F−Statistics for interaction effect, F (6,24)=3247.9, p=0.000

  1. All data are reported as mean ± SD (n=3)
  2. Small letters (along the column) and capital letters (within the row) in superscripts indicate significant differences (p<0.05) among cooking methods and extracts respectively
  3. ME methanolic extract, EE ethanolic extract, BE butanolic extract
  4. IC50value of ascorbic acid=5.05±0.07 μg/ml
  5. % Scavenging of ascorbic acid at 30 μg/ml= 92.0 ± 0.06