Table 3 Antioxidant activity of pecan nut cake beverage (PNB) and its concentrated (C1-C5) and ice (I1-I5) fractions over a five-stage block freeze concentration

PNB

132.31 ± 4.10^e,B

227.68 ± 11.42^e,B

258.69 ± 9.50^d,A

40.93 ± 1.67^d,B

44.94 ± 0.79^f,B

C1

133.32 ± 12.30^e

240.93 ± 17.23^e

159.66 ± 9.70^f

32.70 ± 0.70^e

46.63 ± 2.21^e

C2

160.73 ± 14.81^d

312.44 ± 22.16^d

219.08 ± 12.02^e

43.82 ± 0.63^c

52.43 ± 1.15^d

C3

341.08 ± 15.47^c

575.16 ± 14.92^c

483.85 ± 5.20^c

41.31 ± 0.76^d

53.98 ± 2.11^c

C4

504.41 ± 17.47^b

1020.95 ± 24.44^b

889.28 ± 31.02^b

65.99 ± 0.69b

68.06 ± 0.74^b

C5

747.43 ± 23.36^a

1312.19 ± 66.00^a

1393.73 ± 14.21^a

76.45 ± 0.89^a

73.89 ± 1.21^a

I1

155.33 ± 5.72 ^A

280.92 ± 6.83 ^A

202.74 ± 4.12^B

42.64 ± 0.40 ^A

46.62 ± 0.90 ^A

I2

99.75 ± 8.83^D

147.97 ± 15.89 ^C

15.97 ± 1.84 ^F

13.82 ± 0.82^D,E

21.69 ± 0.72^E

I3

96.66 ± 3.81^D

145.72 ± 8.57 ^C

41.30 ± 18.05^E

12.71 ± 0.83^E

31.22 ± 2.31 ^C

I4

89.85 ± 6.49^D

134.98 ± 3.31 ^C

83.79 ± 14.71^D

15.60 ± 0.99^D

30.03 ± 0.53^D

I5

107.31 ± 2.13 ^C

132.14 ± 25.86 ^C

95.73 ± 6.17 ^C

26.48 ± 0.80 ^C

33.78 ± 1.17 ^C