Catechins in green tea are known to have many beneficial health properties. Recently, it has been suggested that matcha has greater potential health benefits than other green teas. Matcha is a special powdered green tea used in the Japanese tea ceremony. However, there has been no investigation to quantitate the catechin intake from matcha compared to common green teas. We have developed a rapi...

Tea is very important product in many countries due to huge consumption in the world and its valuable contains. The traditional harvesting method needs to be improved due to its effect on yield and quality. Mechanical plucking as a substitution to conventional method is spreading quickly and is necessary to be investigated for proper adoption. One of crucial factor has been noted to be the heig...

Clinacanthus nutans (Burm.f) (CN) Lindau is widely grown in tropical Asia and is an important herbal medicine in China, Malaysia and Thailand. This study inspects the antioxidant activity and protective effects of Clinacanthus nutans extracts on plasmid DNA integrity in E. coli. The antioxidant activities of Clinacanthus nutans are lower compared with green tea. The superoxide dismutase (SOD) a...

Theanine is the major amino acid present in Camellia sinensis or green tea. A method for determining theanine in its native state using liquid chromatography with positive-mode electrospray ionization mass spectrometric detection was developed. Quantitation of theanine was achieved using theanine-[(2)H(5)] as an internal standard. This approach was utilized on different green tea matrix materia...

in this study, the effects of different types of hand plucking were studied on green leaf yield and black tea quality. bud and a leaf, bud and two leaves, bud and three leaves and bud and four leaves were the types of hand plucking. plucking was down on chine’s hybrid tea and clone 100 in fuman tea research station. shoots were plucked in flashing period regularly during three years. green leaf...

The objective of this study was to determine the relationship between the plucking periods and the major constituents and the antioxidant activity in green tea. Green tea was prepared from leaves plucked from the end of April 2013 to the end of May 2013 at intervals of one week or longer. The contents of theanine, theobromine, caffeine, catechin (C), and gallocatechin gallate (GCg) were signifi...

(3Z)-Hexenol, which is commonly called leaf al­ cohol, and (2£)-hexenal, also called leaf aldehyde, are widely distributed in fresh leaves, vegetables and fruits. They are mainly responsible for the socalled “green odour” characteristic of leaves, along with other C6-compounds such as (3£")-, and (2£)-hexenols, their corresponding aldehydes (3Z)-, (3£")-hexenals, «-hexanol and «-hexanal. Thus, ...

Tea is very important product in many countries due to huge consumption in the world and its valuable contains. The traditional harvesting method needs to be improved due to its effect on yield and quality. Mechanical plucking as a substitution to conventional method is spreading quickly and is necessary to be investigated for proper adoption. One of crucial factor has been noted to be the heig...

We investigated the inhibition of Clostridium perfringens spore germination and outgrowth by two green tea extracts with low (green tea leaf powder [GTL]; 141 mg of total catechins per g of green tea extract) and high (green tea leaf extract [GTE]; 697 mg of total catechins per g of extract) catechin levels during abusive chilling of retail cooked ground beef, chicken, and pork. Green tea extra...

iced tea is a world popular beverage,for example about 80% of people in italy and united states, consume iced tea as a thirsty-quenching beverage. however, it is also believed that iced tea contains health benefit components. process of iced tea involved tea solid extraction and then mixing with edible acids, flavors, sugar or non-nutritional sweeteners. in this research, regarding to the deman...