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Table 2 Retention time, concentration ranges of lineal response and correlation coefficient for standard organic acids

From: In vitro characterization and in vivo toxicity, antioxidant and immunomodulatory effect of fermented foods; Xeniji™

Organic acid standard Rt (min) Concentration ranges (ppm) Equation R2
Oxalic 3.884 1750–350 Y = 7585.1×-72,810 0.9937
Tartaric 4.148 5000–1000 Y = 2914.9×-2758 0.9942
Ascorbic 5.295 1750–350 Y = 8327.7×-7497.5 0.9921
Lactic 5.857 15,000–3000 Y = 769.58× + 4607 0.9939
Acetic 6.334 10,000–2000 Y = 253.82× + 2571 0.9991
Citric 6.953 10,000–2000 Y = 405.19× + 1826.9 0.9953
Succinic 9.052 10,000–2000 Y = 428.23× + 321.26 0.9936
Kojic 11.31 500–100 Y = 56,358×-22,343 0.9913