Source of variation1
Ascorbic acid
Total phenolic compounds
Antioxidant activity
DPPH
ABTS
Regression model
8,80
b
1,87ns
1,08ns
7,20
b
P
21,50
c
18,38
c
33,12
c
16,19
d
T
83,25
c
54,18
c
147,19
b
72,98
b
t
529,04
b
14,17
c
116,60
b
272,24
c
P
2
33,80
c
ns
763,88
b
0,25ns
T
2
12,10
b
18,08
c
359,49
b
15,30
d
t
2
21,24
c
23,43ns
235,81
b
15,79
b
PT
5,84ns
ns
49,86
c
0,03ns
Pt
9,12
d
17,30
c
36,39
c
15,87
d
Tt
ns
ns
ns
6,58ns
Lack of fit
12,23ns
15,95ns
268,74ns
8,57ns
R
2
0,9164
0,51223
0,4462
0,9052
1
P=pressure. T=temperature. t=time.
ap ≤ 0.01. bp ≤ 0.05. cp ≤ 0.10
nsNon-significant.
Table 3:
ANOVA (F value) of the quadratic model for ascorbic acid content. total phenolic compounds and antioxidant activity of the HHP treated orange juice.
