background & aims of the study: tea is one of the most important beverages that consumes in several parts of the world including iran. tea plant can be contaminated during manufacturing processes and growth period by pollutants such as heavy metals. in this study, the concentration of some heavy metals in different brands of both iranian and imported black tea to iran was investigated to survey...

Tea is the third most consumed beverage in world. It has bioactive compounds that provide health benefits; for reason, concentrating this product a good alternative different industries. Block freeze-concentration technology with potential to be used concentrate food solutions, preserving functional compounds. The aim of work was study effect block on total solids content, catechin polyphenol a...

The aqueous extracts of sweet basil (Ocimum basilicum L.), tarragon (Artemisia dracunculus L.), fennel (Foeniculum vulgare Miller), olive (Olea europaea L.), sage (Salvia officinalis L.), thyme (Thymus vulgaris L.), wild thyme (T. serpyllum L.), tea (Camellia sinensis (L.) Kuntze), and verbena (Verbena officinalis L.) were investigated for polyphenol, tannins, antocyanins and flavonoids. Among ...

We investigated the phylogenetic diversity of 144 Colletotrichum isolates associated with symptomatic and asymptomatic tissues of Camellia sinensis and other Camellia spp. from seven provinces in China (Fujian, Guizhou, Henan, Jiangxi, Sichuan, Yunnan, Zhejiang), and seven isolates obtained from other countries, including Indonesia, UK, and the USA. Based on multi-locus (ACT, ApMat, CAL, GAPDH,...

While beneficial health properties of tea leaves have been extensively studied, less attention is paid to the flowers of tea. In this study, the anti-inflammatory effects of hot water extract of tea (Camellia sinensis) flowers were investigated. Pharmacological studies found that administration of tea flowers extract (TFE) could effectively inhibit croton oil-induced ear edema and carrageenin-i...

We have shown in molecular basis that alcoholic tea aroma is mainly formed by endogenous enzymatic hydrolysis of glycosidic aroma precursors during manufacturing. Amounts of alcoholic aroma precursor and glycosidase activity in each part of the tea shoot (Camellia sinensis var. sinensis cv Yabukita and a hybrid of var. assamica & var. sinensis cv Izumi) were indirectly measured by means of a cr...

OBJECTIVE The aim of this study was to analyze the impact of green tea on dentin erosion. MATERIALS AND METHODS Twelve extracted sound human premolars were immersed in Coca Cola with a pH of 2.8 for 5 minutes. The surface microhardness was measured with a Knoop diamond under a load of 50gr/10s. The teeth were immersed in green tea (Camellia sinensis) solution for one minute. The microhardness...

The effects of oral feeding of aqueous extract of green tea leaf on alkaline phosphatase (ALP), acid phosphatase (ACP), alanine transaminase (ALT), aspartate transaminase (AST), sugar and total proteins were studied in the liver of cadmium treated rats. In cadmium control group sugar and protein levels were decreased and ALP level was significantly (p<0.001) decreased, whereas ACP, ALT and AST ...

Caffeine (1, 3, 7-trimethylxanthine) and theobromine (3, 7-dimethylxanthine) are the major purine alkaloids in plants, e.g., tea (Camellia sinensis) and coffee (Coffea arabica). Caffeine is a major component of coffee and is used widely in food and beverage industries. Most of the enzymes involved in the caffeine biosynthetic pathway have been reported previously. Here, we demonstrated the bios...

Nowadays different foods and vegetables are contaminated with oxalates of sodium and calcium, present in pesticides and chemical fertilisers. Even many drugs contain sodium oxalate, which is a causative agent of urolithiasis and hepatic cell damage. Herbal plant supplements may reduce this drug induced toxicity. Renal and hepatoprotective effects of the aqueous extracts of green tea (Camellia s...