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Table 3 Comparison of LOD, LOQ, RSD and percentage recovery of the developed method with the literature methods

From: New fluorescence spectroscopic method for the simultaneous determination of alkaloids in aqueous extract of green coffee beans

Compound LOD (µg/L) LOQ (µg/L) RSD (%) Recovery (%) Method References
Caffeine 3610 10,940 1.7 95 ± 7 HPLC–DAD–MS [4]
Theobromine 30 100 6.5 97 ± 3
Trigonelline 3770 11,420 1.0 102 ± 2
Caffeine 80 0.20–6.2 99 ± 3 HPLC–UV [9]
Theobromine 140 2.8–9.1 103 ± 6
Trigonelline 260 1.1–5.0 99 ± 5
Caffeine 11.9 39.6 2.1–4.7 97 ± 4 LC–MS [12]
Theobromine
Trigonelline 36.4 121.5 3.2–3.5 140 ± 16
Caffeine 2 40 3 99 ± 2 Fluorescence This study
Theobromine 6 20 3
Trigonelline 7 20 4 99 ± 2