Quantitative Determination of Flavonoids and Chlorogenic Acid in the Leaves of Arbutus unedo L. Using Thin Layer Chromatography

Table 2

Content of individual polyphenol during the year in the leaves of A. unedo expressed in mg per g of dry sample.

	Quercitrin	Isoquercitrin	Hyperoside	Chlorogenic acid
January	1.94±0.08	nd	0.35±0.03	0.70±0.09
February	1.34±0.22	nd	0.12±0.03	0.76±0.09
March	1.38±0.21	nd	nd	1.06±0.19
April	1.38±0.17	nd	0.11±0.03	1.13±0.07
May	1.21±0.05	nd	0.11±0.02	1.06±0.12
June	2.20±0.17	0.07±0.01	0.11±0.04	1.45±0.34
July	1.56±0.09	nd	nd	1.46±0.13
August	1.78±0.30	0.09±0.05	0.21±0.01	1.11±0.14
September	1.74±0.14	nd	nd	0.79±0.16
October	1.78±0.04	nd	nd	1.45±0.59
November	1.98±0.21	0.33±0.08	0.16±0.01	0.76±0.11
December	1.46±0.26	0.13±0.09	0.24±0.01	0.61±0.05

Results expressed as mean ± standard deviation.
nd: not detected.