Measurement of Phenolic Compounds by Spectrometry and Chromatography in Lime Juices
Table 1
Total polyphenols (mg/l), hesperidin, eriocitrin, Na+, and K+ contents of Iranian lime juice manufacturing products.
Juice
Variable
Meana
RSDa (%)
Maxa
Mina
1
Total polyphenols (mg/l)
33.00
8.25
39.48
23.71
Hesperidin content
29.81
1.91
32.02
28.54
Eriocitrin content
3.90
5.05
9.74
0.93
Na+ content
1295.29
73.40
1378.35
1293.13
K+ content
157.98
25.22
186.97
140.96
2
Total polyphenols (mg/l)
42.48
2.24
44.81
40.34
Hesperidin content
41.59
6.45
46.87
34.40
Eriocitrin content
4.11
0.24
4.37
3.89
Na+ content
832.88
893.99
1865.18
314.73
K+ content
1078.07
721.10
1529.47
246.47
3
Total polyphenols (mg/l)
42.63
3.68
44.77
38.38
Hesperidin content
41.9
4.34
45.01
36.94
Eriocitrin content
3.88
0.81
4.82
3.31
Na+ content
580.48
46.15
617.22
528.68
K+ content
964.0
86.07
1039.09
870.07
4
Total polyphenols (mg/l)
36.86
2.78
38.82
33.68
Hesperidin content
29.18
0.34
29.58
28.92
Eriocitrin content
1.12
1.94
3.37
0.00
Na+ content
1319.97
232.63
1612.93
972.57
K+ content
192.19
23.50
219.22
176.49
5
Total polyphenols(mg/l)
39.66
4.67
44.84
35.75
Hesperidin content
47.85
4.32
56.13
39.72
Eriocitrin content
5.69
5.32
10.55
0
Na+ content
370.63
41.08
411.56
329.39
K+ content
1988.86
34.65
2026.42
1958.13
6
Total polyphenols (mg/l)
38.90
5.23
44.18
33.71
Hesperidin content
51.32
1.76
53.07
49.55
Eriocitrin content
3.35
2.90
5.17
0
Na+ content
395.32
40.29
436.46
355.92
K+ content
1295.02
3.26
1297.89
1291.47
7
Total polyphenol (mg/l)
32.48
5.24
38.54
29.32
Hesperidin content
34.81
15.48
52.63
24.59
Eriocitrin content
1.43
2.48
4.31
0
Na+ content
1043.30
1043.30
1106.54
982.47
K+ content
49.48
49.48
619.41
522.14
aMeans, maximum (max) and minimum (min), and relative standard deviation (RSD). Significant differences between lime juice manufacturing products and blank at ,, and . is considered as nonsignificant (ns).