Phytochemicals and Quality of Green and Black Teas from Different Clones of Tea Plant

Table 3

t-test for the chemical properties of green and black tea from different clones of tea plants.

Variety	Chemical properties	t value	value
Ambari	RSA (% DPPH inhibition)	11.36	<0.001
	Caffeine content (%)	16.64	<0.001
	Total flavonoid content (mg QE/g dry extract)	4.09	0.015
	IC50 (μg/mL)	11.35	<0.001
	Total polyphenol content (mg GAE/g dry extract)	5.36	0.006
	Tannin content (mg GAE/g dry extract)	6.16	0.004
Chiniya	RSA (% DPPH inhibition)	13.04	<0.001
	Caffeine conten (%)	10.68	<0.001
	Total flavonoid content (mg QE/g dry extract)	4.48	0.011
	IC50 (μg/mL)	13.03	<0.001
	Total polyphenol content (mg GAE/g dry extract)	5.02	0.007
	Tannin content (mg GAE/g dry extract)	3.87	0.018
Gumti	RSA (% DPPH inhibition)	8.56	0.001
	Caffeine content (%)	6.22	0.003
	Total flavonoid content (mg QE/g dry extract)	2.87	0.045
	IC50 (μg/mL)	8.56	0.001
	Total polyphenol content (mg GAE/g dry extract)	3.79	0.019
	Tannin content (mg GAE/g dry extract)	7.06	0.002
Takda-78	RSA (% DPPH inhibition)	9.41	<0.001
	Caffeine content (%)	5.47	0.005
	Total flavonoid content (mg QE/g dry extract)	5.28	0.006
	IC50 (μg/mL)	9.41	<0.001
	Total polyphenol content (mg GAE/g dry extract)	1.04	0.358
	Tannin content (mg GAE/g dry extract)	4.92	0.008
Tinali	RSA (% DPPH inhibition)	14.05	<0.001
	Caffeine content (%)	10.46	<0.001
	Total flavonoid content (mg QE/g dry extract)	4.48	0.011
	IC50 (μg/mL)	14.05	<0.001
	Total polyphenol content (mg GAE/g dry extract)	5	0.007
	Tannin content (mg GAE/g dry extract)	2.85	0.046

Significant at , QE = quercetin equivalent, GAE = gallic acid equivalent.