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Table 1 Total phenols, flavonoids and tannin content of various extracts of cooked vegetable of L. siceraria

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

Treatment

Total phenol (mg GE/100g)

Total flavonoids (mg QE/100g)

Tannin content (mg CE/100g)

ME

EE

BE

Mean

ME

EE

BE

Mean

ME

EE

BE

Mean

Raw (Control)

501.8 ± 2.52bC

440.8 ± 2.12aA

451.9 ± 3.49cB

464.8b

47.8 ± 0.43aA

47.0 ± 0.56aA

104.1 ± 0.57cB

66.3b

6.5 ± 1.84aA

24.5 ± 1.92bB

9.7 ± 4.74aA

13.5a

Pressure cooked

660.4 ± 5.57cC

507.8 ± 3.82cA

558.8 ± 3.79dB

575.6d

114.2 ± 2.03bA

149.5 ± 1.07cC

123.2 ± 0.93dB

129.0c

6.8 ± 3.79aA

21.8 ± 5.89bB

16.8 ± 3.19bB

15.1a

Microwave cooked

394.5 ± 2.81aB

473.0 ± 4.02bC

160.5 ± 2.65bA

342.6a

46.8 ± 0.57aA

78.7 ± 0.85bC

64.1 ± 0.93bB

63.2a

13.8 ± 4.74bB

6.5 ± 3.63aA

12.7 ± 4.49aB

11.0a

Fried

726.7 ± 5.0dB

758.8 ± 3.67dC

94.6 ± 0.89aA

526.7c

170.2 ± 0.63cB

255.9 ± 1.09dC

48.3 ± 0.55aA

158.1d

17.7 ± 2.34bB

30.5 ± 6.50aC

10.3 ± 1.61aA

19.5b

Mean

570.8C

545.1B

316.4A

 

94.8A

132.7C

84.9B

 

11.2A

20.8B

12.4A

 
 

F−Statistics for extraction solvents, F (2,24) = 18836, p=0.000

F−Statistics for cooking treatments, F (3,24) = 7300.6, p=0.000

F−Statistics for interaction effect, F (6,24) =7634.3, p=0.000

F−Statistics for extraction solvents, F (2,24) = 8535.9, p=0.000

F−Statistics for cooking treatments, F (3,24)= 22229.7, p=0.000

F−Statistics for interaction effect, F (6,24)= 11151.5, p=0.000

F−Statistics for extraction solvents, F (2,24) = 20.1, p=0.000

F−Statistics for cooking treatments, F (3,24) = 6.99, p=0.000

F−Statistics for interaction effect, F (6,24) = 9.77, p=0.000

  1. Values are presented as mean ±SD (n=3) and referred to the dry weight
  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. GE gallic acid equivalent, QE quercetin equivalent, CE catechin equivalent, ME methanolic extract, EE ethanolic extract, BE butanolic extract