Chemical constituents of Korean green tea which were harvested at four different times(May, July, August, September) were studied.
The Contents of chemical constituents varied according to their harvested times as follows.
1.Water(2.4%, 2.8%, 2.2%, ...
Chemical constituents of Korean green tea which were harvested at four different times(May, July, August, September) were studied.
The Contents of chemical constituents varied according to their harvested times as follows.
1.Water(2.4%, 2.8%, 2.2%, 1.9%) Waterextract(35%, 34%, 37%, 34%), Carbon(28.6%, 28.9%, 29.5%, 49.0%), Hydrogen(6.8%, 6.5%, 6.6%, 6.3%), Total Nitrogen(5.98%, 4.12%, 3.21%, 3.08%), Oxygen(32.3%, 33.1%, 32.6%, 33.0%)
2.Crude fiber(7.2%, 8.3%, 10.2%, 11.2%), Crude fat(1.38%, 1.45%, 2.52%, 2.15%), Crude protein(31.3%, 20.4%, 17.1%, 16.9%)
3.Total sugar(5.5%, 7.1%, 10.6%, 11.8%), Reducing sugar(0.21%, 2.52%, 2.50%), Sucrose(0.45%, 2.86%, 5.42%, 6.32%), Fructose(0.25%, 0.12%, 0.09%, 0.03%), Glucose (1.62%, 1.02%, 0.54%, 0.45%)
4.Tannin(11.2%, 15.1%, 13.1%, 12.3%), Theaflavin(0.007%, 0.09%, 0.06%, 0.056%)
5.Catechin was conposed of GA(0.17%, 022%, 019%, 0.18%), (-)-EGC (2.71%, 3.21%, 3.01%, 2.8%), (-)-CA(0.15%, 0.16%, 0.16%, 0.17%), (-)-EC(1.21%, 1.34%, 1.36%, 1.3%), -EGCG(6.81%, 8.21%, 7.45%, 7.24%), (-)-ECG(1.41%, 1.91%, 1.62%, 1.50%)
6.Amino acids(1.90%, 1.07%, 0.99%. 0.72%), Caffeine(3.12%, 2.96%, 2.01%, 1.48%)