A Simple HPLC-ELSD Method for Sugar Analysis in Goji Berry

Table 3

Precision and recovery data for retention times, peak areas, and sugar concentrations.

Sugar	Intraday precision (, mean), % RSD									Interday precision			Recovery (%)
	Day 1			Day 2			Day 3			(, mean), % RSD			Spiked amount; (mg mL^−1)	Mean	% RSD
	Fructose	0.10	0.41	0.24	0.11	0.52	0.28	0.14	0.65	0.34	0.13	0.41				0.37	1.0	95.4	1.12
2.0													97.0
3.0													96.3
Glucose	0.26	0.79	0.97	0.28	0.74	0.92	0.31	0.76	0.95	0.25	0.82	1.07	1.0	98.2	1.02
													2.0	99.0
													3.0	98.0
Sucrose	0.11	0.26	0.15	0.12	0.32	0.12	0.14	0.29	0.19	0.16	0.36	0.21	1.0	95.6	1.21
													2.0	97.0
													3.0	99.0

% RSD of retention time.
% RSD of peak area.
% RSD of sugar concentration.