Journal of Tea Science Research. 2015, Vol. 5, No. 3, 1-12
5
for laying chicken produce eggs with uniquely
favourable characteristics as compared with the
non-catechin feed used for laying chicken. It has been
observed lower content of total lipid; cholesterol and
peroxide when catechin feed mixed in the feed of
laying chickens produce eggs (Hara, 2001)). Further,
adding polyphenon (a product of Mitsui Norin Co.,
Ltd., Japan that contains catechins and derivatives)
to
the hen feed reduce the fat and peroxide
contents of
the eggs and the eggs are commercially marketed as
‘catechin eggs’ in Japan (Tanaka, 2013).
1.15 Catechin Candy
Keeping the effectiveness against anti-flu and
prevention of tooth decay in mind, candies containing
catechins has commercially entered in the market.
However, the regulations do not permit its efficacy.
1.16 Catechin Chewing Gum
Generally, the extract of dried green tea powder used
to prepare various formulations of green tea chewing
gum. A combination of sugar, aspartame and maltitol
covered the bitter taste of the green tea. Cinnamon,
peppermint tastes of chewing gums are available
(Aslani et al., 2014).
1.17 Catechin Tea Bar
It is a low fat and a great source of fibre, natural
cellulose, vitamin B, zinc, selenium, chromium, minerals
and essential amino acids. This bar contains green tea
catechin and brewer’s yeast. The other ingredients are
sprouted brown rice, flax seed, buckwheat, oat, rye,
sesame seeds, konnyaku fructose and bamboo salt.
Green tea bar is familiar in Japan.
1.18 Bottle Catechin Drinks
This prepared mainly from the extracts from useful
herbs are mixed with tea catechins and β-carotene. In
combination with vitamins, tea catechin found to have
a strong scavenging action on active oxygen (Kuroda
and Hara, 2004). Bottle tea drinks are also commercially
produced by using oolong, black, green tea leaves and
sometimes mixing with several teas. These drinks are
very common among Japanese. Chen et al. (2001)
examined the stability of GTC (Green Tea Catechin:
Instant Green Tea) as a mixture under various
processing conditions and observed when it was added
into commercially available soft drinks or sucrose
solutions containing citric acid and ascorbic acid,
GTC exhibited varying stability irrespective of low
pH value. This suggested that other ingredients used
in production of tea drinks might interact with GTC
and affect its stability. When canned and bottled tea
drinks are produced, stored, and transported, the
degradation of GTC must be taken into consideration
(Chen et al., 2001).
1.19 Catechin Beverage
This is
healthy thirst-quenching beverage high in
antioxidants while unsweetened and calorie-free made
with purified water fortified with catechins, vitamin C
and other ingredients. This beverage has good market
demand in Japan, Taiwan and US.
1.20 Green Tea Cola (Cricket cola)
This is available in the global market. The ingredients
used are carbonated water, sugar, invert sugar, brewed
green tea concentrate, contains 0.5% or less of the
following: natural flavors, kola nut extract, vanilla
extract, citric acid, malic acid, tartaric acid, caramel
colour, sodium benzoate and potassium sorbate (to
preserve freshness).
1.21 Matcha Powder
Matcha refers to finely milled or fine powder green
tea and very popular in Japan
.
It is rich in polyphenols,
vitamins, minerals, fibers, chlorophyll and L-theanine.
Matcha Powder can be used as a new refreshing
flavour for beverages, dairy products, cooking and
confections.
1.22 Green tea Ice Cream
Green tea ice cream or Matcha Aisu (Ice), as it’s
commonly referred to in Japan, is widely available in
Japan and East and West Asia too. This is not only
because of its inherent health benefits, but also because it
is simply a great dessert with a traditional Japanese taste.
2 China
In order to further utilize low-grade tea and tea
by-products, increasing the economic and social benefits
of tea industry, China has begun to develop so-called
deep-processing technologies for tea since 1979 (Lin,
2004). Various products have been developed (Figure 2)
which are describing bellow.
