Rapid Determination of the Monosaccharide Composition and Contents in Tea Polysaccharides from Yingshuang Green Tea by Pre-Column Derivatization HPLC

Table 2

Intraday and interday precision of the pre-column PMP derivatization HPLC method in terms of the retention time and peak areas of the monosaccharide standards.

Carbohydrates	Intraday precision (CV%, )		Interday precision (CV%, )
	Retention time	Peak area	Retention time	Peak area
Mannose	0.72	0.08	1.52	0.46
Ribose	0.78	0.09	1.47	0.37
Rhamnose	0.89	0.08	0.93	0.43
Glucuronic acid	0.13	1.93	0.46	2.59
Galacturonic acid	0.15	2.75	0.51	4.48
Glucose	0.36	0.08	0.97	0.48
Xylose	0.39	0.68	0.84	1.53
Galactose	0.36	0.66	0.88	1.62
Arabinose	0.36	0.44	0.98	1.07
Fucose	0.38	0.11	1.12	0.39