Tea Samples
Effective classification of Chinese tea samples in hyperspectral imaging
... Chinese tea samples, using visible light hyperspectral spectroscopy rather than ...imaged tea sample using a morphological cropper, principal component analysis is employed for feature ...the ...
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Screening Antioxidant Activity of Extracts from Different Tea Samples
... green tea leaves and tea wastes ( Camellia sinensis ...from tea lands in Lahijan (Northern ...green tea was considered as the first 2-4 leaves and a bud. White tea was a Korean brand ...
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Concentrations and Health Risk of Heavy Metals in Tea Samples Marketed in IRAN
... in samples marketed in Mashhad (Iran) was detectable at high levels (> 2 ...the samples were ...in tea samples are their growth media, such as ...gasoline). Tea plants normally are ...
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Evaluating the Arsenic, Cadmium, Lead, and Copper levels in certain imported tea samples consumed in Iran
... black tea samples, consumed in ...the tea products being produced in several tea estates with varying metal concentrations in the soils, resulting in the varied elemental uptake by the ...
5
Electrochemical determination of catechol in tea samples using anthraquinone modified carbon paste electrode
... In this work, the use of carbon paste modified with anthraquinone as a sensitive electrochemical electrode was established for the determination of catechol using square wave voltammetry. Parameters such as pH of working ...
7
Electrochemical Study of Commercial Black Tea Samples
... such crude samples (Figure 2.A). In fact, some phenolic compounds present variable tendency to undergo electrochemical oxidation followed by chemical reactions, namely electrochemical polymerization, leading to ...
7
COMPARATIVE STUDIES ON THE ANTIOXIDANT POTENTIALS OF FOUR DIFFERENT TYPES OF TEA; AN INSIGHT INTO A BETTER CHOICE OF HEALTHY BEVERAGE
... caffeinated tea (598.50 ± 3.43%) and herbal tea (581.52±4.81%). The black tea had the least IC 50 and thus, more potent in ferric reducing antioxidant ...black tea preparation leads to the ...
9
Evaluation of Nutritional composition of Roselle ( Hibiscus(sabdariffa) herbal Tea infused with Ginger ( Zingiber officinale and Lemon ( Citrus limon ) Peel
... herbal tea production is essential as it increases the macro- and micronutrient compositions of the ...the tea samples. Furthermore, results show that roselle tea is a great source of ...
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Determination of Vitamin B2 contents in Black, Green, Sage, and Rosemary Tea Infusions by Capillary Electrophoresis with Laser-Induced Fluorescence Detection Filiz Tezcan and F.Bedia Erim
... green tea samples, which is in agreement with our reported values ...milk samples having different animal origins were reported between 101 and 175 µg/100 mL, in 2 white wine samples as 12 and ...
7
Heavy Metals Contents in Some Commercially available Coffee, Tea, and Cocoa Samples in Misurata City – Libya
... all samples except in Brazilian coffee ...in tea samples with a range of ...coffee samples were over ...Cocoa samples was in a range of ...all samples are shown in Figure ...
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THE COMAPARATIVE DATA BETWEEN VARIOUS COMMERCIAL BRANDS OF TEA POWDERS AND GREEN TEA
... ABSTRACT: Tea is composed of many ...of tea ingested and the quality of the tea apart from that green tea having various useful properties which are helpful for the human ...of tea ...
6
A study on heavy metal content in black tea available in domestic market in India
... to tea plants growing in highly acidic soils [14, ...in tea samples marketed in Mashad (Iran) was detectable at high levels (> 2 µg/g) which is higher than permissible level (1 µg/kg) given by ...
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Analysis of aroma components of dark teas from five different production regions by fully automatic headspace solid phase microextraction coupled with gas chromatography mass spectrometry
... dark tea (22.82%), and Qingzhuan tea (22.03%), while Pu-erh ripe tea and Liubao tea were only detected ...ripe tea, the hydrocarbons accounted for a large proportion in other CDTs, ...
8
Assessment of the Potential Health Risk of Heavy Metal Exposure from the Consumption of Herbal, Black and Green Tea
... true tea due to their toxic effects which could result in serious carcinogenic side effects and its environmental impact via Estimated Provisional Weekly Intake (EPTWI) results and comparing it to the Accepted ...
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Silver Nanoparticle Modified Graphene Paste Electrode for the Electrochemical Detection of Lead, Cadmium and Copper
... The fabrication of the improvised AgNP-modified GPE was proven effective in detecting lead, cadmium, and copper. The AgNP-modified GPE was remarkable in terms of its significant LOD of 17 ppb for Cd 2+ , 12 ppb for Pb 2+ ...
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Antioxidant activity of selected phenols and herbs used in diets for medical conditions
... the samples between the antioxidant capacity determined by the DPPH method and the total phenolic ...green tea samples, could be observed in oregano and peppermint ...
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Effectiveness of Irradiation Treatment in Eliminating E. coli O157:H7 and Salmonella in Dried Organic Herb Samples Intended for Use in Blended Tea
... and tea including black tea, blend tea, neem blend herbs, neem tea, mint (fresh and dry), jasmine (fresh & dry), lemongrass & lemongrass blend tea were analyzed for total ...
6
Determination of Flavonoid and Caffeine Content in Black and Oolong Teas
... curve for flavonoid content determination. 12, 24, 36, 47, and 59 mM of quercetin were diluted for distilled water infusion and methanol infusion. 10 mL of water infusion at time interval 5, 10, 15, 20, 25, and 30 ...
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The status of micronutrients (Cu, Fe, Mn, Zn) in tea and tea infusions in selected samples imported to the Czech Republic
... the tea plant and, therefore, in its ...of tea leaves imported to the Czech Republic are presented in Tables ...the tea leaves can be arranged in the following order, with regards to their total ...
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Quantitative Analysis of Caffeine Content from Different Tea Growing Regions of Rwanda
... times, tea becomes highly known owing to its pharmacological potential properties such as antitumor, anti-oxidative, and anti-carcinogen ...of tea is assessed based on its caffeine content. Most people ...
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