Table 1.

Analytical HPLC conditions for Curcuma longa extract.

Parameters	Conditions
Column	Zorbax extended-C18 (C18, 4.6 mm × 150 mm, 5 µm)
Flow rate	0.8 mL/min
Injection volume	10 μL
UV detection	450 nm
Run time	30 min
Gradient	Time (min)	% A1	% B2
	0	20	80
	11	20	80
	25	100	0
	27	20	80
	30	20	80

¹ Acetonitrile;² 0.2% phosphoric acid (pH 3.5).