Table 2. Nicotine contents of tea leaves following green (Sencha and pan-fired), oolong and black tea manufacturing processes.

Process	Nicotine content (μg g−1 dry weight)
	Yabukita			Benifuki
Fresh leaves	0.021	±	0.002	0.026	±	0.005
Green tea (Sencha)
Steaming	0.021	±	0.001	0.023	±	0.001
Primary drying	0.020	±	0.002	0.025	±	0.004
Rolling	0.020	±	0.001	0.022	±	0.001
2nd drying	0.017	±	0.001	0.022	±	0.001
Final rolling	0.018	±	0.001	0.023	±	0.002
Drying	0.020	±	0.003	0.025	±	0.001
Green tea (Pan-fired)
1st panning	0.021	±	0.005	0.021	±	0.001
1st rolling	0.018	±	0.001	0.023	±	0.001
2nd panning	0.019	±	0.001	0.024	±	0.000
2nd rolling	0.021	±	0.000	0.023	±	0.002
2nd drying	0.018	±	0.002	0.022	±	0.001
Drying	0.021	±	0.002	0.023	±	0.002
Oolong tea
Sunlight withering	0.020	±	0.001	0.024	±	0.001
Indoor withering	0.018	±	0.001	0.024	±	0.002
Panning	0.021	±	0.002	0.024	±	0.001
Rolling	0.018	±	0.002	0.026	±	0.002
2nd rolling	0.020	±	0.000	0.025	±	0.002
Drying	0.019	±	0.001	0.026	±	0.002
Black tea
Indoor withering	0.020	±	0.002	0.028	±	0.000
Rolling	0.019	±	0.002	0.028	±	0.001
Fermentation	0.019	±	0.002	0.027	±	0.003
Drying	0.021	±	0.001	0.025	±	0.001

Values are means±S.D. (n = 3).