To provide a new manufacturing method of containered green tea beverage
suited for selling hot. A step of eliminating silica was introduced in
the manufacturing process, wherein the silica is eliminated after adding
silica to a tea extract obtained by extracting green tea leaves to adsorb
the sediment component present in tea extract to the silica. By adding
silica to the tea extract and bringing them into contact, the proteins
and polysaccharides causing secondary sediment can be selectively
adsorbed and decreased, allowing the occurrence of sediment to be
prevented, even when selling the beverage hot. Furthermore, it allows a
large amount of flavor component to be left. Further more, a large amount
of catechins can be left in the beverage, allowing the growth of
heat-resistant bacteria to be inhibited by the antibacterial action of
catechins. In addition, fatty acid oxidative decomposition products,
which are the causes of degraded odor, can be selectively decreased,
while on the other hand, roast aroma components, such as pyrazine, can be
left in large amounts.