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Table 6 Results of accuracy determination

From: Screening of caffeine, preservatives and antioxidants in dairy products available in Bangladesh using an RP-HPLC method

Standards Amount used (mg/L) eq. to (80 %–120 %) respectively Amount recovered (mg/L) % Recovery (Mean ± %RSD)a
CF 60 59.66 99.44 ± 0.025
67.5 67.36 99.79 ± 0.04
75 74.62 99.48 ± 0.045
82.5 82.23 99.56 ± 0.047
90 89.69 99.64 ± 0.02
BA 200 198.59 99.30 ± 0.04
225 223.65 99.41 ± 0.03
250 247.62 99.05 ± 0.02
275 273.22 99.33 ± 0.02
300 297.61 99.20 ± 0.02
PP 20 19.23 96.03 ± 0.4
22.5 22.03 97.92 ± 0.25
25 24.23 96.77 ± 0.14
27.5 27.08 98.4 ± 0.22
30 29.25 97.33 ± 0.21
BP 20 19.27 96.18 ± 0.16
22.5 21.99 97.78 ± 0.12
25 24.28 96.96 ± 0.19
27.5 27.03 98.28 ± 0.2
30 29.26 97.31 ± 0.22
BHA 160 158.31 98.9 ± 0.045
180 178.33 99.06 ± 0.036
200 197.58 98.77 ± 0.087
220 218.42 99.25 ± 0.06
240 238.42 99.34 ± 0.015
BHT 160 158.72 99.16 ± 0.04
180 178.22 99.0 ± 0.04
200 198.75 99.34 ± 0.09
220 218.22 99.17 ± 0.025
240 238.10 99.2 ± 0.02
  1. CF caffeine, BA benzoic acid, PP propylparaben, BP butylparaben, BHA butylated hydroxyanisole, BHT butylated hydroxytoluene
  2. aAll determinants are in triplicate