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

Table 6 Results of accuracy determination

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

CF caffeine, BA benzoic acid, PP propylparaben, BP butylparaben, BHA butylated hydroxyanisole, BHT butylated hydroxytoluene
^aAll determinants are in triplicate

ISSN: 2731-9245