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. 2020 Apr 3;9(4):298. doi: 10.3390/antiox9040298

Table 6.

HPLC analysis of selected markers of C. × clementina juice.

Selected Markers JD JE JF Sign.
Apigenin 0.06 ± 0.04c 0.05 ± 0.03b 0.09 ± 0.08a **
Caffeic acid 7.48 ± 1.61b 3.65 ± 1.30c 8.52 ± 1.81a **
Chlorogenic acid 2.59 ± 1.22a 2.06 ± 1.20b 2.56 ± 1.26a **
Didymin 3.85 ± 1.26c 4.17 ± 1.33b 5.51 ± 0.04a **
Eriocitrin 1.84 ± 0.19c 2.33 ± 1.34a 0.91 ± 0.11b **
Gallic acid 1.02 ± 0.09b 0.62 ± 0.04c 1.67 ± 0.18a **
Hesperidin 81.08 ± 4.94a 40.06 ± 3.04c 65.3 ± 3.54b **
Naringin 1.73 ± 0.18c 2.12 ± 1.19b 3.14 ± 1.32a **
Narirutin 8.50 ± 1.83a 6.25 ± 1.32c 7.88 ± 1.81b **
Neoeriocitrin 2.69 ± 0.72c 3.14 ± 1.04b 3.41 ± 1.39a **
Neohesperidin 110.63 ± 5.52b 80.26 ± 4.83c 112.32 ± 5.63a **
Nobiletin 0.06 ± 0.01c 0.12 ± 0.01b 0.14 ± 0.01a **
p-Coumaric acid 7.67 ± 1.69b 6.47 ± 1.58c 8.29 ± 1.72a **
Poncirin 1.52 ± 0.19c 1.74 ± 0.21b 2.63 ± 0.51a **
Protocatechuic acid 1.02 ± 0.74b 0.62 ± 0.07c 1.67 ± 0.96a **
Quercetin 0.42 ± 0.03b 0.56 ± 0.05c 1.32 ± 0.13a **
Sinensetin 0.005 ± 0.01b 0.006 ± 0.01b 0.01 ± 0.03a **
Tangeretin 0.06 ± 0.07a 0.05 ± 0.06b 0.07 ± 0.08a **
Vanillic acid 0.69 ± 0.07b 2.16 ± 1.30a 0.43 ± 0.03c **
∑ Indentified phenols 232.92 156.44 226.01

JD: juice from fruits collected in Cetraro; JE: juice from fruits collected in Rosarno; JF: juice from fruits collected in Corigliano Calabro. Data are expressed as the mean ± standard deviation (SD) (n = 3). Differences were evaluated by one-way analysis of variance (ANOVA) completed with a multicomparison Tukey’s test. ** p < 0.05. Means in the same row with different small letters differ significantly (p < 0.05). Results are expressed as mg/100 mL juice. Sign: significant.