Table 4. Caffeine, polyphenol and chlorogenic acid contents of non-fermented roasted coffee beans (NFC) and fermented roasted coffee beans (FC)

Sample	Contents
	Caffeine (μg/mL)	Polyphenol (mg GAE2)/mL)	Chlorogenic acid (μg/mL)
NFC extract	1,130.22±1.551)	2.31±0.01	531.81±27.32
FC extract	696.94±0.04	2.03±0.07	264.46±2.47
t(p)	471.787(0.000)***	19.736(0.000)***	16.874(0.000)***

Data are expressed as the mean±SD (n=3).
GAE, gallic acid equivalent.
p<0.001.