Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Black Tea"”.
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The minor theaflavins of black tea
… characterisation and synthesis of three novel tea pigments.<br/><br/>This isolation was achieved by the solvent extraction of a Malawian black tea (Ruo Mimosa) followed by the chromatography of the ethyl acetate-soluble portion on Sephadex LH-20 (ethanol elution), which produced three fractions …
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Rapid analysis of the chemical composition of black tea leaves using vibrational spectroscopy techniques
The introduction of rapid methods to monitor tea quality during the oxidation stage in black tea manufacturing is essential for increasing the sustainability of tea production. During this significant stage, the catechins in the tea leaves are converted to theaflavin and the thearubigin compounds …
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Evaluation of White Hibiscus-Black Tea Blends in Kombucha Production: Chemical Composition and Sensory Properties
… study aimed to assess the impact of replacing black tea with white hibiscus at 100%, 50%, and 0% replacement levels on the physicochemical properties and consumer perception of the kombucha. Three kombucha tea formulations—100% black tea, 100% white hibiscus, and a 50% black tea:50% white …
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Modified Green Tea Polyphenol, Palmitoyl-EGCG and Black Tea Theaflavins: Promising Natural Herpes Simplex Virus 1 and 2 Agents
<p>Green tea and black tea originate from the leaves of <em>Camellia Sinensis</em> plant and contain antioxidants known to possess antiviral properties, including anti-HSV (Herpes Simplex Virus). There is no cure for the diseases caused by HSV infections. While there is a rising concern over the …
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Reduction of white blood cell DNA strand breaks (alkaline comet assay) in smokers and non smokers by black tea consumption
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
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Screening Of Natural Products For Their Effect On Kallikrein-Kinin System: Potential Implications In The Treatment Of Hereditary Angioedema
… brownii bark, Terminalia arjuna bark and black tea (Camellia sinensis) extracts inhibited plasma kallikrein with IC 50 values of 30, 65, 220, 240, 280 and 220 mg/ml, respectively. T. chebula fruit, T. arjuna fruit, T. bellirica fruit, T. brownii bark, T. arjuna bark and black tea extracts …
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Interactions between skimmed bovine milk and tea infusions under an acidulous environment: a thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… properties of acidified dairy gels produced with tea infusions (ADG), as well as the secondary structure of protein components, were investigated to explore the practicality of using green tea, oolong tea and black tea extracts as an additive in milk products. Reconstituted skim milk was …
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Prevention of Iron-Polyphenol Complex Formation in Iron Fortified Tea
The fortification of black tea with iron has the potential to reduce the prevalence of iron deficiency in the developing world. Tea is an ideal vehicle for food fortification because it is centrally processed, is the most consumed beverage globally, aside from water, and is consumed in regular …
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Functionality of Azadirachta indica A. Juss (neem) in beverages
… and contrast it with traditionally consumed teas- green and black tea. We found that the total polyphenols and anti-oxidant activities in green and black tea are far higher than in neem, possibly due to the presence of flavan-3-ols in these teas. However, we used LC-ESI-MS/MS to identify …
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The vasodilatory and antioxidant activities of polyphenolic substances
… the effect of a wide range of grape and tea based extracts and green tea catechins on vascular tension in vitro, further determine the relationship between their vasodilatory and antioxidant activities and identify the major polyphenols present in green and black tea. Grape and tea based …
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Morphological granulometry for texture analysis
… The method was also applied to images of Indian black tea granules, which are ordered according to granule size. Better classification was achieved for both sets of images compared to previously published results for these images. The performance of grey level co-occurrence matrix (GLCM) features …
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The Development and Application of Non- Targeted Mass Spectrometry Based Methods to Tea (Camellia Sinensis L.)
… in investigating complex metabolite profiles of tea extracts. A reversed-phase (RP) ion-trap MS method was initially developed to detect and classify proanthocyanidins (PAs) in oolong and black tea extracts, resulting in several new PAs being identified. Two new LC-HRMS methods were then …
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The Use of Natural Products as Potential Anti-Pseudomonas Agents
… derivatives, 5’OH-tangeretin and 5’OH-nobiletin, black tea polyphenol – theaflavins (TFs), as well as an herb named <em>Fallopia multiflora</em> (Chinese Knotweed). <em>P. fluorescens</em> and <em>P. aeruginosa</em> were used as model organisms. Antimicrobial effects were evaluated at various …
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Flavonoid Consumption of College Athletes
… Top five food sources for total flavonoids were black tea, orange juice, onions, apples with skin, and blueberries. Spearman’s correlation analysis revealed that high consumption of cyaniding, pelargonidin, peonidin, petunidin, epicatechin-3-gallate, epigallocatechin, epigallocatechin-3-gallate, …
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Effects of Tea on Peripheral and Cerebral Micro- and Macrovascular Function in Humans
… inverse relation between the regular intake of tea, a major source of dietary flavonoids, and CVD risk. Tea has demonstrated improved conduit artery endothelial function and glucose handling in both healthy individuals and in those with overt CVD. However, the effects of tea on the …
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ULTRASOUND ASSESSMENT OF BRACHIAL ARTERY FLOW-MEDIATED DILATION FOLLOWING ACUTE KOMBUCHA TEA CONSUMPTION IN HEALTHY MEN
… first step in the atherogenic process. Chronic tea consumption is inversely related to cardiovascular disease, and short-term ingestion can transiently improve endothelial function using percent change in flow mediated dilation (FMD%) as an index. Kombucha tea has many claimed health benefits, …
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Detection of Acidovorax citrulli, the Causal Agent of Bacterial Fruit Blotch Disease of Cucurbits, Prevention via Seed Treatments and Disease Resistance Genes
… such as non-destructive seed detection, green tea seed treatment, candidate NB-LRR genes for disease resistance, and optimization of virus induced gene silencing for melon and watermelon crops. The potential application of attenuated total reflectance (ATR) Fourier transform infrared …
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Immunohistochemical localisation of caffeine in young tea (Camellia sinensis (L.) O. Kuntze) leaves
… from the Camellia sinensis bush is known as tea. The leaves have many health benefits and contain high contents of antioxidants. The leaves contain caffeine, which is believed to be a phosphodiesterase inhibitor preventing the disposal of cyclic adenosine monophosphate, and thus when …