Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| dispersive liquid-liquid microextraction based on solidification of floating organic drop for preconcentration and determination of trace amounts of copper by flame atomic absorption spectrometry. | a novel, simple, rapid, sensitive, inexpensive and environmentally friendly dispersive liquid-liquid microextraction method based on the solidification of a floating organic drop (dllme-sfo) was developed for the determination of copper by flame atomic absorption spectrometry (faas). n-o-vanillidine-2-amino-p-cresol was used as a chelating ligand and 1-undecanol was selected as an extraction solvent. the main parameters affecting the performance of dllme-sfo, such as sample ph, volume of extract ... | 2017 | 27855895 |
| spray drying of lipid-based systems loaded with camellia sinensis polyphenols. | in this work, spray-dried lipid systems based on soy phosphatidylcholine, cholesterol and lauroyl polyoxylglycerides for entrapping green tea polyphenols were produced. the aim was to study the effects of the encapsulating composition and spray drying conditions on the system performance and physicochemical product properties. the spray dryer powder production yield falls around 50.7 ± 2.8%, which is typical for lab scale spray dryers. wrinkled and rounded particles, with low surface porosities ... | 2017 | 26872795 |
| black hairy tongue with a fixed dose combination of olanzapine and fluoxetine. | black hairy tongue (bht) is a benign disease characterized by elongated filiform lingual papillae, with a carpet-like appearance of the dorsum of the tongue. it is has been reported to occur with a prevalence ranging from 0.6% to 11.3%. although its etiology is not fully understood, bht may be triggered by smoking, excessive coffee or black tea drinking, poor oral hygiene, trigeminal neuralgia, general debilitation, dry mouth as well as certain drugs. we present here a case of a patient with psy ... | 2017 | 27298505 |
| inhibition of salivary amylase by black tea in high-caries and low-caries index children: a comparative in vivo study. | dental caries is a universal disease. dietary modification is important in reducing the occurrence of dental caries. tea which is so frequently consumed with cariogenic starch rich food is proposed to have anticariogenic potential. the various mechanism has been proposed for same and one being inhibition of salivary amylase activity. | 2017 | 27313414 |
| the prevalence of dental fluorosis and its associated factors in salem district. | there are various regions in india that have high levels of fluoride in drinking water sources. many people residing in such places suffer from dental fluorosis (df). | 2017 | 27307668 |
| l-theanine inhibits proinflammatory pkc/erk/icam-1/il-33 signaling, apoptosis, and autophagy formation in substance p-induced hyperactive bladder in rats. | upregulation of substance p (sp) and neurokinin-1 receptor (nk1r) activation induces pro-inflammatory bladder hyperactivity through the pkc/erk/nf-κb/icam-1/il-33 signaling pathways to increase the leukocyte infiltration and adhesion leading to reactive oxygen species (ros) production, autophagy, and apoptosis. l-theanine is a unique non-protein-forming amino acid present in tea (camellia sinensis [l.] o. kuntze) with its antioxidant, anti-inflammatory, and relaxation effects to improve cognitio ... | 2017 | 26828717 |
| pcl assay application in superoxide anion-radical scavenging capacity of tea camellia sinensis extracts. | plant polyphenols are known for their limiting of adverse effects on reactive oxygen species (ros) in biological systems. the photochemiluminescence (pcl) assay allows to evaluate the antiradical activity of a compound in the presence of a superoxide anion-radical (o •-), which is one of the ros directly associated with the human body. in this work, determination of the superoxide anion radical scavenging activity of different tea extracts using the pcl assay was performed. | 2017 | 28068039 |
| [progress in catechins oxidation products and their formation mechanism]. | catechins are the key components of tea and have a great impact on its quality. catechins can be oxidized to form a new black tea polyphenols, some of which have better pharmacological effect. however, the formation mechanism of these new polyphenols is still unclear. in this paper, oxidation products coming from catechins and the formation mechanism of the new compounds are reviewed.it is the base of further study on theaflavins, thearubigins and theabrownines. | 2017 | 28948726 |
| identification of epigallocatechin-3-o-(3-o-methyl)-gallate (egcg3''me) and amino acid profiles in various tea (camellia sinensis l.) cultivars. | this article includes experimental data on the identification of epigallocatechin-3-o-(3-o-methyl)-gallate (egcg3''me) by 2-dimensional (2d) proton (1h) nmr analysis and on the information of amino acid and catechin compound profiles by hplc analysis in leaf extracts of various tea cultivars. these data are related to the research article "metabolic phenotyping of various tea (camellia sinensis l.) cultivars and understanding of their intrinsic metabolism" (ji et al., 2017) [1]. the assignment f ... | 2017 | 28879218 |
| green tea supplementation produces better neuroprotective effects than red and black tea in alzheimer-like rat model. | green tea from camellia sinensis plays a neuroprotective role in different neurodegenerative conditions, such as memory deficits in alzheimer disease (ad). however, whether other teas from camellia sinensis present similar neuroprotective effect still is not clear. here we investigate effects of green, red and black tea supplementation on memory and hippocampus oxidative status in a rat model of alzheimer-like disease (ad-like). | 2017 | 28873707 |
| inhibitory effect of the ethanol extract of a rice bran mixture comprising angelica gigas, cnidium officinale, artemisia princeps, and camellia sinensis on brucella abortus uptake by professional and nonprofessional phagocytes. | in this study, we evaluated the inhibitory effect of a rice bran mixture extract (rbe) on brucella abortus pathogenesis in professional (raw 264.7) and nonprofessional (hela) phagocytes. we fermented the rice bran mixture and then extracted it with 50% ethanol followed by gas chromatography-mass spectrometry to identify the components in rbe. our results clearly showed that rbe caused a significant reduction in the adherence of b. abortus in both cell lines. furthermore, analysis of phagocytic s ... | 2017 | 28870011 |
| copper, manganese, zinc, and cadmium in tea leaves of different types and origin. | concentrations of selected metals (cu, mn, zn, cd) in tea leaves were investigated. samples included black, green, and other (red, white, yellow, and oolong) teas. they were purchased on a local market but they covered different countries of origin. beverages like yerba mate, rooibos, and fruit teas were also included in the discussion. metal determinations were performed using atomic absorption spectrometry. in black teas, mn/cd ratio was found to be significantly higher (48,091 ± 35,436) vs. g ... | 2017 | 28866820 |
| fluoride concentrations in traditional and herbal teas: health risk assessment. | traditional tea (camellia sinensis) and herbal tea are being consumed across the world. however, long term consumption of tea can increase the chances of fluorosis owing to the presence of fluoride (f) in teas. therefore, it is imperative to assess the health risk associated with tea consumption. the main objectives of this study were to: 1) estimate total f in 47 popular teas, including traditional and herbal teas and f concentrations in 1% (w/v) infusion of 5 min, and 2) assess the exposure ri ... | 2017 | 28865383 |
| phytochemical-rich foods inhibit the growth of pathogenic trichomonads. | plants produce secondary metabolites that often possess widespread bioactivity, and are then known as phytochemicals. we previously determined that several phytochemical-rich food-derived preparations were active against pathogenic foodborne bacteria. trichomonads produce disease (trichomoniasis) in humans and in certain animals. trichomonads are increasingly becoming resistant to conventional modes of treatment. it is of interest to test bioactive, natural compounds for efficacy against these p ... | 2017 | 28903731 |
| green tea effects on cognition, mood and human brain function: a systematic review. | green tea (camellia sinensis) is a beverage consumed for thousands of years. numerous claims about the benefits of its consumption were stated and investigated. as green tea is experiencing a surge in popularity in western culture and as millions of people all over the world drink it every day, it is relevant to understand its effects on the human brain. | 2017 | 28899506 |
| study of nutritional value of dried tea leaves and infusions of black, green and white teas from chinese plantations | the processing of tea leaves determines the contents of bioactive ingredients, hence it should be expected that each variety of tea, black, red or green, will represent a different package of compounds of physiological importance. taste and aroma, as well as price and brand are the main factors impacting consumers’ preferences with regard to tea of their choice; on the other hand consumers less frequently pay attention to the chemical composition and nutritional value of tea. | 2017 | 28895389 |
| optimisation of saponin extraction conditions with camellia sinensis var. assamica seed and its application for a natural detergent. | camellia sinensis var. assamica seed cake (a by-product of tea-seed oil) is an abundant resource with poor utilisation. c. sinensis var. assamica seed saponin (css) is one kind of non-ionic surfactant. in this study, the css extraction conditions were optimised by response surface methodology (rsm) and then the css detergent was developed. additionally, the safety and decontamination ability of the developed detergent were evaluated. | 2017 | 28990656 |
| phosphate stresses affect ionome and metabolome in tea plants. | in order to study the response of tea plants to p stress, we conducted the ionomic and metabolomic analysis by icp-oes, gc-ms and lc-ms. the results demonstrated that p was antagonistic with s, and was cooperative with cu, zn, mn and fe under p-deficiency. however, p was antagonistic with mn, fe and s, and was cooperative with cu and zn under p-excess. moreover, p-deficiency or excess reduced the syntheses of flavonoids and phosphorylated metabolites. p-deficiency decreased the amount of glutama ... | 2017 | 28982053 |
| inhibitory effects of total triterpenoid saponins isolated from the seeds of the tea plant (camellia sinensis) on human ovarian cancer cells. | ovarian cancer is regarded as one of the most severe malignancies for women in the world. death rates have remained steady over the past five decades, due to the undeniable inefficiency of the current treatment in preventing its recurrence and death. the development of new effective alternative agents for ovarian cancer treatment is becoming increasingly critical. tea saponins (ts) are triterpenoidsaponins composed of sapogenins, glycosides, and organic acids, which possess a variety of pharmaco ... | 2017 | 28974006 |
| α-farnesene and ocimene induce metabolite changes by volatile signaling in neighboring tea (camellia sinensis) plants. | herbivore-induced plant volatiles (hipvs) act as direct defenses against herbivores and as indirect defenses by attracting herbivore enemies. however, the involvement of hipvs in within-plant or plant-to-plant signaling is not fully clarified. furthermore, in contrast to model plants, hipv signaling roles in crops have hardly been reported. here, we investigated hipvs emitted from tea (camellia sinensis) plants, an important crop used for beverages, and their involvement in tea plant-to-plant si ... | 2017 | 28969800 |
| modeling of yield and environmental impact categories in tea processing units based on artificial neural networks. | in this study, an artificial neural network (ann) model was developed for predicting the yield and life cycle environmental impacts based on energy inputs required in processing of black tea, green tea, and oolong tea in guilan province of iran. a life cycle assessment (lca) approach was used to investigate the environmental impact categories of processed tea based on the cradle to gate approach, i.e., from production of input materials using raw materials to the gate of tea processing units, i. ... | 2017 | 28965294 |
| decaffeinated green and black tea polyphenols decrease weight gain and alter microbiome populations and function in diet-induced obese mice. | decaffeinated green tea (gt) and black tea (bt) polyphenols inhibit weight gain in mice fed an obesogenic diet. since the intestinal microflora is an important contributor to obesity, it was the objective of this study to determine whether the intestinal microflora plays a role in the anti-obesogenic effect of gt and bt. | 2017 | 28965248 |
| proteomic analysis of camellia sinensis (l.) reveals a synergistic network in the response to drought stress and recovery. | drought is a crucial limiting factor for tea yield and quality. to systematically characterize the molecular response of tea plants to drought stress and its capacity to recover, we used itraq-based comparative proteomic approach to investigate the effects of drought on protein expression profiles in tea seedlings subjected to different drought treatments. a total of 3274 proteins were identified, of which 2169 and 2300 showed differential expressions during drought and recovery, respectively. f ... | 2017 | 29096085 |
| functional analysis of two flavanone-3-hydroxylase genes from camellia sinensis: a critical role in flavonoid accumulation. | flavonoids are major secondary metabolites in camellia sinensis. flavanone-3-hydroxylase (f3h) is a key enzyme in flavonoid biosynthesis in plants. however, its role in the flavonoid metabolism in c. sinensis has not been well studied. in this study, we cloned two f3hs from c. sinensis, named csf3ha and csf3hb, where csf3ha containing 1107 bases encoded 368 amino acids, and csf3hb containing 1071 bases encoded 357 amino acids. enzymatic activity analysis showed both recombinant csf3h enzymes in ... | 2017 | 29088063 |
| comparative assessment of antibacterial efficacy of aqueous extract of commercially available black, green, and lemon tea: an in vitro study. | the objective of this study is to determine and compare antibacterial efficacy of aqueous extracts of black, green, and lemon tea of a commercially available brand. | 2017 | 29085267 |
| improving the quality of fermented black tea juice with oolong tea infusion. | fresh tea leaves were crushed into juice and then fermented (oxidation) to obtain fermented black tea juice, which can be used to prepare black tea beverage. the effects of addition of oolong tea infusion or tossing of tea leaves on the sensory quality and theaflavins (tfs) concentration of fermented black tea juice were investigated. the results showed that both addition of tea infusion and tossing of fresh tea leaves increased the tfs/thearubigins (trs) ratio and improved the sensory quality o ... | 2017 | 29085133 |
| quantum-dot-based lateral flow immunoassay for detection of neonicotinoid residues in tea leaves. | neonicotinoid insecticides are commonly used for pest control on tea plantations as a result of their broad-spectrum activity. however, neonicotinoid residues released from tea leaves into tea infusions pose a dietary risk to consumers. therefore, a rapid, sensitive, and reliable on-site detection method for neonicotinoids is needed. we developed a quantum-dot-based fluorescent lateral flow immunochromatographic strip (lfics) combined with a broad-specific antibody for detection of typical neoni ... | 2017 | 29077402 |
| actual daily intakes of tea catechins and thier estimation according to four season 3 day weighed dietary records and a short food frequency questionnaire among japanese men and women | background: tea catechins are considered to be important preventive factors of cancer on several organs; however, the relationships of the actual daily intakes (adis) on the preventive effects have not been adequately addressed. we measured the adis of tea catechins as annual averages derived from every their ingested cups recorded by each subject, and the estimation models were established considering tea origin. methods: fifty-nine japanese men and women completed four season 3 day weighed die ... | 2017 | 29072829 |
| pupation behaviors and emergence successes of ectropis grisescens (lepidoptera: geometridae) in response to different substrate types and moisture contents. | ectropis grisescens warren (lepidoptera: geometridae) is one of the most severe pests of tea plants in china. this species commonly pupates in soil; however, little is known about its pupation ecology. in the present study, choice and no-choice tests were conducted to investigate the pupation behaviors and emergence success of e. grisescens in response to different substrates (sand, sandy loam 1, sandy loam 2, and silt loam) and moisture contents (5, 20, 35, 50, 65, and 80%). moisture-choice bio ... | 2017 | 29069472 |
| multimycotoxin lc-ms/ms analysis in tea beverages after dispersive liquid-liquid microextraction (dllme). | the aim of the present study was to develop a multimycotoxin liquid chromatography tandem mass spectrometry (lc-ms/ms) method with a dispersive liquid-liquid microextraction procedure (dllme) for the analysis of afs, 3adon, 15adon, niv, ht-2, t-2, zea, ota, enns, and bea in tea beverages and to evaluate their mycotoxin contents. the proposed method was characterized in terms of linearity, limits of detection (lods), limits of quantification (loqs), recoveries, repeatability (intraday precision), ... | 2017 | 29068686 |
| the roles of epigallocatechin-3-gallate in the treatment of neuropathic pain: an update on preclinical in vivo studies and future perspectives. | neuropathic pain (np) is a complex and chronic disease caused by lesions or defects of the somatosensory nervous system. the treatments normally used for managing np usually lack efficacy. several animal models of np have been engineered in order to understand the molecular mechanisms underlying np and to find alternative molecules to use as new therapeutic agents. preclinical in vivo studies identified the epigallocatechin-3-gallate (egcg), a main active component of green tea (camellia sinensi ... | 2017 | 29066865 |
| comprehensive lipidome-wide profiling reveals dynamic changes of tea lipids during manufacturing process of black tea. | as important biomolecules in camellia sinensis l., lipids undergo substantial changes during black tea manufacture, which is considered to contribute to tea sensory quality. however, limited by analytical capacity, detailed lipid composition and its dynamic changes during black tea manufacture remain unclear. herein, we performed tea lipidome profiling using high resolution liquid chromatography coupled to mass spectrometry (lc-ms), which allows simultaneous and robust analysis of 192 individual ... | 2017 | 29058896 |
| development of a novel herbal formulation to inhibit biofilm formation in toxigenic vibrio cholerae. | vibrio cholerae, a causative agent of the waterborne disease cholera, still threatens a large proportion of world's population. the role of biofilm formation in v. cholerae pathogenesis is well established, as it provides the bacterium enhanced tolerance to antimicrobial agents and increased transmission. in the present study, four medicinal plants used in traditional medicines with antidiarrheal properties were evaluated for its antibiofilm activity. methanol extracts of these plants (centella ... | 2017 | 29053421 |
| characterization of molecular structures of theaflavins and the interactions with bovine serum albumin. | in this study, theaflavins (tf1, tf2a, tf2b and tf3) were prepared from black tea and their interaction with bovine serum albumin (bsa) was explored by fluorescence and cd spectroscopy. the results showed that the structures of theaflavins exhibited significant effects on the binding/quenching process, and the binding affinity increased with the increase of molecular weight of theaflavins and the presence of galloyl moiety. the quenching effects showed a sequence as tf3 > tf2a > tf2b > tf1, demo ... | 2017 | 29051637 |
| genome-wide identification of micrornas responsive to ectropis oblique feeding in tea plant (camellia sinensis l.). | the tea plant (camellia sinensis l.) is vulnerable to the geometrid ectropis oblique; although micrornas (mirnas) are important for plant growth, development and stress response, the function of mirnas in the response of c. sinensis to stress from e. oblique is unclear. to identify e. oblique stress-responsive mirnas and their target genes in tea plant, three small rna libraries were constructed from leaves subjected to mechanical wounding (mw), geometrid attack (ga) and from healthy control (ck ... | 2017 | 29051614 |
| inhibitory effect of black tea pigments, theaflavin‑3/3'-gallate against cisplatin-resistant ovarian cancer cells by inducing apoptosis and g1 cell cycle arrest. | adverse side effects and acquired resistance to conventional chemotherapy based on platinum drive the exploration of other selective anticancer drugs. theaflavin‑3-gallate (tf2a) and theaflavin‑3'-gallate (tf2b), theaflavin monomers in black tea, exhibited a potent growth inhibitory effect on cisplatin-resistant ovarian cancer a2780/cp70 cells and were less cytotoxic to normal ovarian iose-364 cell line. flow cytometry analysis and western blotting indicated that tf2a and tf2b induced apoptosis ... | 2017 | 29048667 |
| a review of the taea proficiency test on natural and anthropogenic radionuclides activities in black tea. | a proficiency test amongst 15 turkish laboratories with participation of 5 non-turkish laboratories was organized to determine the 137cs, 40k and 90sr massic activities in black tea powder samples. the bulk material, consisting of tea produced in 2014, was mixed with contaminated tea that was withdrawn from the market after the chernobyl accident. nineteen laboratories reported 41 results. the evaluation of the results was based on the accuracy and precision criteria adopted by the iaea proficie ... | 2017 | 29046243 |
| comparative suppressing effects of black and green teas on the formation of advanced glycation end products (ages) and age-induced oxidative stress. | this study aimed at investigating and comparing the anti-diabetic potential of black and green teas. biochemical analyses indicate higher antioxidant potency, significantly correlated with the phytochemicals present, in green teas compared to black teas. both extracts afforded a similar level of protection to erythrocytes against peroxyl radical-induced lysis. non-cytotoxic concentration of green and black tea extracts significantly reduced the reactive oxygen species (ros) production (p < 0.01) ... | 2017 | 29043349 |
| digestion under saliva, simulated gastric and small intestinal conditions and fermentation in vitro of polysaccharides from the flowers of camellia sinensis induced by human gut microbiota. | in the present study, digestion under saliva, simulated gastric and small intestinal conditions and fermentation in vitro of polysaccharides from the flowers of camellia sinensis (tfps) by human gut microbiota were investigated. the results indicated that human saliva and simulated gastric and intestinal juices had no effect on tfps, while tfps could be utilized by human fecal microbiota, which was proved from the decreased molecular weight and lower content of total or reducing sugars after fer ... | 2017 | 29143827 |
| antioxidant and anti-inflammatory properties of ilex guayusa tea preparations: a comparison to camellia sinensis teas. | ilex guayusa tea preparations are now commercially available as runa tea. little is known regarding the antioxidant and anti-inflammatory bioactivities of this tea. the i. guayusa teas had a total polyphenolic content between 54.39 and 67.23 mg gae per g dry mass and peroxyl radical scavenging capacities between 1773.41 and 2019 μmol te per g dry mass, nearly half of that for the camellia sinensis teas. the i. guayusa teas afforded 60-80% protection from oxidative stress in the caco-2 cellular a ... | 2017 | 29134218 |
| functional characterization of epitheaflagallin 3-o-gallate generated in laccase-treated green tea extracts in the presence of gallic acid. | epitheaflagallin (etfg) and epitheaflagallin 3-o-gallate (etfgg) are minor polyphenols in black tea extract that are enzymatically synthesized from epigallocatechin (egc) and epigallocatechin gallate (egcg), respectively, in green tea extract via laccase oxidation in the presence of gallic acid. the constituents of laccase-treated green tea extract in the presence of gallic acid are thus quite different from those of nonlaccase-treated green tea extract: egc and egcg are present in lower concent ... | 2017 | 29131612 |
| functional foods and lifestyle approaches for diabetes prevention and management. | functional foods contain biologically active ingredients associated with physiological health benefits for preventing and managing chronic diseases, such as type 2 diabetes mellitus (t2dm). a regular consumption of functional foods may be associated with enhanced anti-oxidant, anti-inflammatory, insulin sensitivity, and anti-cholesterol functions, which are considered integral to prevent and manage t2dm. components of the mediterranean diet (md)-such as fruits, vegetables, oily fish, olive oil, ... | 2017 | 29194424 |
| lipidomics analysis unravels the effect of nitrogen fertilization on lipid metabolism in tea plant (camellia sinensis l.). | nitrogen (n) plays an important role in the formation of tea quality-related compounds, like amino acids and flavor/aroma origin compounds. lipids, which have been reported to be affected by n deficiency, are precursors to the generation of flavor/aroma origin compounds in tea plant. however, there is no literature about the lipid profiles of tea plant affected by n fertilization. hence, we hypothesize that the biosynthesis of flavor-related compounds in tea was affected by n through its regulat ... | 2017 | 29037151 |
| green tea protects against memory deficits related to maternal deprivation. | maternal deprivation (md) in early life affects the development of the brain, causing cognitive losses in adulthood. oxidative imbalance may be one of the factors that trigger these deficits. therapies with antioxidant components, like green tea from camellia sinensis (gt) has been used to treat or prevent memory deficits in a variety of conditions related to oxidative stress. here we demonstrate that memory deficits caused by md can be prevented by gt antioxidant activity in hippocampus. pregna ... | 2017 | 29031548 |
| theaflavin ameliorates ionizing radiation-induced hematopoietic injury via the nrf2 pathway. | it has been well established that reactive oxygen species (ros) play a critical role in ionizing radiation (ir)-induced hematopoietic injury. theaflavin (tf), a polyphenolic compound from black tea, has been implicated in the regulation of endogenous cellular antioxidant systems. however, it remains unclear whether tf could ameliorate ir-induced hematopoietic injury, particularly the hematopoietic stem cell (hsc) injury. in this study, we explored the potential role of tf in ir-induced hsc injur ... | 2017 | 28939421 |
| comparative effects of green and black tea extracts on lowering serum uric acid in hyperuricemic mice. | tea (camellia sinensis (l.) kuntze [theaceae]) is used to induce urination and inducing nervous excitation. green and black teas have multifarious physiological functions. the different effects of green and black tea aqueous extracts (gtes and btes) on hyperuricemia are not definitely reported. | 2017 | 28938867 |
| green tea (camellia sinensis) and l-theanine: medicinal values and beneficial applications in humans-a comprehensive review. | green tea (camellia sinensis) is a famous herb, and its extract has been extensively used in traditional chinese medicinal system. in this context, several studies have revealed its health benefits and medicinal potentialities for several ailments. with ever increasing scientific knowledge, search for safer, potential and novel type of health-related supplements quest, scientists are re-directing their research interests to explore natural resources i.e. medicinal herbs/plant derived compounds. ... | 2017 | 28938517 |
| molecular aspects of cancer chemopreventive and therapeutic efficacies of tea and tea polyphenols. | the natural dietary product tea (camellia sinensis) and its bioactive polyphenols such as epigallocatechin gallate (egcg) and theaflavin (tf) demonstrated potential anticancer effects in different preclinical and clinical studies. the aim of the present review was to understand the molecular mechanisms of the tea and tea polyphenol-mediated cancer prevention and therapy. in the setting of in vivo cancer prevention studies, administration of the tea and tea polyphenols at preinitiation stages onl ... | 2017 | 28935149 |
| effects of long-term ingestion of white tea on oxidation produced by aging and acute oxidative damage in rats. | the infusion tea extracted from the leaves of the plant camellia sinensis can be used in the prevention of cancer, cardiovascular and neurodegenerative diseases, and aging, while adriamycin (adr) is an anticancer drug that increases oxidative stress in cells. the present study evaluated the protective effect of the long-term consumption of white tea used at two different doses against the oxidative stress produced by aging and acute oxidation caused adr treatment. at wearing, rats received disti ... | 2017 | 28929453 |
| genome-wide analysis of the biosynthesis and deactivation of gibberellin-dioxygenases gene family in camellia sinensis (l.) o. kuntze. | gibberellins (gas), a class of diterpenoid phytohormones, play a key role in regulating diverse processes throughout the life cycle of plants. bioactive ga levels are rapidly regulated by gibberellin-dioxygenases (gaox), which are involved in the biosynthesis and deactivation of gibberellin. in this manuscript, a comprehensive genome-wide analysis was carried out to find all gaox in camellia sinensis. for the first time in a tea plant, 14 csgaox genes, containing two domains, diox_n (pf14226) an ... | 2017 | 28925957 |
| color stability of lithium disilicate ceramics after aging and immersion in common beverages. | the color of an esthetic restoration and its color stability are important for long-term success. however, the impact of common beverages on lithium disilicate ceramic is not well known. | 2017 | 28923549 |
| cell wall pectin methyl-esterification and organic acids of root tips involve in aluminum tolerance in camellia sinensis. | tea plant (camellia sinensis (o.) kuntze) can survive from high levels of aluminum (al) in strongly acidic soils. however, the mechanism driving its tolerance to al, the predominant factor limiting plant growth in acid condition, is still not fully understood. here, two-year-old rooted cuttings of c. sinensis cultivar 'longjingchangye' were used for al resistance experiments. we found that the tea plants grew better in the presence of 0.4 mm al than those grew under lower concentration of al tre ... | 2017 | 28917145 |
| draft genome sequence of paenibacillus sp. xy044, a potential plant growth promoter isolated from a tea plant. | paenibacillus sp. xy044 is an endophytic bacterium isolated from the stem of a tea plant (camellia sinensis cv. maoxie). here, we present the draft genome sequence of xy044, which includes genes encoding features related to plant growth promotion and biocontrol. | 2017 | 28912334 |
| draft genome sequence of streptomyces sp. xy006, an endophyte isolated from tea (camellia sinensis). | streptomyces sp. xy006 is an endophytic bacterium isolated from the young leaf material of the tea plant (camellia sinensis). the draft genome consists of 8.2 mb and encodes 7,415 putative open reading frames. this strain is found to contain a high capacity for the production of natural products. | 2017 | 28912322 |
| dna barcode and identification of the varieties and provenances of taiwan's domestic and imported made teas using ribosomal internal transcribed spacer 2 sequences. | the major aim of made tea identification is to identify the variety and provenance of the tea plant. the present experiment used 113 tea plants [camellia sinensis (l.) o. kuntze] housed at the tea research and extension substation, from which 113 internal transcribed spacer 2 (its2) fragments, 104 trnl intron, and 98 trnl-trnf intergenic sequence region dna sequences were successfully sequenced. the similarity of the its2 nucleotide sequences between tea plants housed at the tea research and ext ... | 2017 | 28911667 |
| itraq-based proteomics monitors the withering dynamics in postharvest leaves of tea plant (camellia sinensis). | tea plant [camellia sinensis (l.) o. kuntze] is a typical leaf-type beverage crop. many secondary metabolites, such as tea polyphenols, theanine, and caffeine that accumulated in tea leaves are beneficial to human health. the fresh leaves of tea plant are harvested and timely processed into tea products with different flavors. the withering of fresh tea leaves is the first step in tea processing and directly affects tea color, taste, and fragrance. to understand the molecular mechanism that infl ... | 2017 | 28852881 |
| effect of fluoride treatment on gene expression in tea plant (camellia sinensis). | tea plant is a typical fluorine (f) accumulator. f concentration in mature tea leaves is several hundred times higher than that in normal field crops. long-term consumption of teas with high level f will increase the risks of dental and skeletal fluorosis. the mechanism of f accumulation in tea stands unclear. rna-seq and digital gene expression (dge) techniques were used to investigate the effect of f on the differential expressions of transcriptome in tea plant. the results showed that f conte ... | 2017 | 28851890 |
| ameliorative role of ethyl-acetate fraction of methanolic leaf extract of camellia sinensis (green tea) on streptozotocin-induced diabetes linked testicular hypofunction in albino rat: a dose-dependent biochemical and genomic transection study. | background the present investigation focuses the diabetes-induced testicular hypofunction and its possible correction by the effective dose of ethyl-acetate fraction of methanolic extract of camellia sinensis leaves through dose-dependent study in streptozotocin-induced diabetic rat. methods the androgenic, spermiological, oxidative stress and apoptosis sensors along with testicular genomic sensors were evaluated in a dose-dependent fashion (50 mg or 100 mg or 200 mg/kg body weight). activities ... | 2017 | 28850550 |
| role of green tea flavonoids and other related contents in cancer prevention. | green tea is made from camellia sinensis and leaves through the oxidation process. it mainly originates in china and has been used traditionally throughout asia. in the west, black tea has been used mostly, but green tea has become the most popular beverage throughout the world. it is also used as a raw material in cosmetics, health foods, and as an added ingredient in various beverages. different varieties of green tea are available. the main differences between the varieties are due to harvest ... | 2017 | 28845765 |
| transcriptomic analysis of flower development in tea (camellia sinensis (l.)). | flowering is a critical and complicated process in plant development, involving interactions of numerous endogenous and environmental factors, but little is known about the complex network regulating flower development in tea plants. in this study, de novo transcriptome assembly and gene expression analysis using illumina sequencing technology were performed. transcriptomic analysis assembles gene-related information involved in reproductive growth of c. sinensis. gene ontology (go) analysis of ... | 2017 | 28844668 |
| protective effects of theasinensin a against carbon tetrachloride-induced liver injury in mice. | theasinensins have been identified as a major group of unique catechin dimers mainly found in oolong tea and black tea. among several types of theasinensins, theasinensin a (tsa), an epigallocatechin gallate (egcg) dimer with an r-biphenyl bond, is the most abundant theasinensin prevalent in oolong tea. previous studies have reported that tsa exhibits antioxidative, anti-inflammatory and anti-cancer activities in vitro and in vivo. however, little is known about the hepatoprotective effect of ts ... | 2017 | 28831484 |
| analysis of theanine in tea (camellia sinensis) dietary ingredients and supplements by high-performance liquid chromatography with postcolumn derivatization: single-laboratory validation, first action 2016.10. | 2017 | 28825557 | |
| transcriptional profiling of catechins biosynthesis genes during tea plant leaf development. | a total of 299,113 unigenes were generated and 15,817 degs were identified. we identified candidate genes associated with the regulation of catechins biosynthesis during leaf development in tea plant. the tea plant (camellia sinensis (l.) o. kuntze) is one of the most economically significant crops worldwide because of its positive effects on human health. the health benefits of tea are mainly attributed to catechins, which are the predominant polyphenols that accumulate in tea. catechins are pr ... | 2017 | 28825226 |
| combinatorial effect of nicotine and black tea on heart rate variability: useful or harmful? | the effect of nicotine on heart rate variability (hrv) is controversial. autonomic nervous system is the main regulator of heart rhythm, and heart rate variability is an appropriate index to assessment of the effects of the autonomic system on heart. in this study, the combination effect of nicotine and black tea consumption on sympatho-vagal balance and heart rate variability was investigated in rats. male wistar rats were randomized into four groups as control, tea (2.5 g/100 cc, daily), nicot ... | 2017 | 28815936 |
| dietary polyphenols for atherosclerosis: a comprehensive review and future perspectives. | atherosclerosis is one of the most prevalent reasons for premature death in adults. despite the several conventional drugs in the market; many patients are not completely treated. here we comprehensively review current clinical evidence regarding the efficacy of dietary polyphenols in atherosclerosis and related complications. pubmed, cochrane library and scopus were searched from inception until august 2016 to obtain clinical trials in which polyphenols were evaluated in cardiovascular paramete ... | 2017 | 28812379 |
| stimulation in primary and secondary metabolism by elevated carbon dioxide alters green tea quality in camellia sinensis l. | rising co2 concentration, a driving force of climate change, is impacting global food security by affecting plant physiology. nevertheless, the effects of elevated co2 on primary and secondary metabolism in tea plants (camellia sinensis l.) still remain largely unknown. here we showed that exposure of tea plants to elevated co2 (800 µmol mol-1 for 24 d) remarkably improved both photosynthesis and respiration in tea leaves. furthermore, elevated co2 increased the concentrations of soluble sugar, ... | 2017 | 28801632 |
| studies on the biochemical formation pathway of the amino acid l-theanine in tea (camellia sinensis) and other plants. | tea (camellia sinensis) is the most widely consumed beverage aside from water. the flavor of tea is conferred by certain metabolites, especially l-theanine, in c. sinensis. to determine why more l-theanine accumulates in c. sinensis than in other plants, we compare l-theanine contents between c. sinensis and other plant species (camellia nitidissima, camellia japonica, zea mays, arabidopsis thaliana, and solanum lycopersicum) and use a stable isotope labeling approach to elucidate its biosynthet ... | 2017 | 28796499 |
| uptake, translocation, metabolism, and distribution of glyphosate in nontarget tea plant (camellia sinensis l.). | the uptake, translocation, metabolism, and distribution behavior of glyphosate in nontarget tea plant were investigated. the negative effects appeared to grown tea saplings when the nutrient solution contained glyphosate above 200 mg l-1. glyphosate was highest in the roots of the tea plant, where it was also metabolized to aminomethyl phosphonic acid (ampa). the glyphosate and ampa in the roots were transported through the xylem or phloem to the stems and leaves. the amount of ampa in the entir ... | 2017 | 28795804 |
| conventional and accelerated-solvent extractions of green tea (camellia sinensis) for metabolomics-based chemometrics. | metabolomics has emerged as an important analytical technique for multiple applications. the value of information obtained from metabolomics analysis depends on the degree to which the entire metabolome is present and the reliability of sample treatment to ensure reproducibility across the study. the purpose of this study was to compare methods of preparing complex botanical extract samples prior to metabolomics profiling. two extraction methodologies, accelerated solvent extraction and a conven ... | 2017 | 28787673 |
| chemical profiling of infusions and decoctions of helichrysum italicum subsp. picardii by uhplc-pda-ms and in vitro biological activities comparatively with green tea (camellia sinensis) and rooibos tisane (aspalathus linearis). | several medicinal plants are currently used by the food industry as functional additives, for example botanical extracts in herbal drinks. moreover, the scientific community has recently begun focusing on halophytes as sources of functional beverages. helichrysum italicum subsp. picardii (everlasting) is an aromatic halophyte common in southern europe frequently used as spice and in traditional medicine. in this context, this work explored for the first time h. italicum subsp. picardii as a pote ... | 2017 | 28787672 |
| chlorogenic acid isomer contents in 100 plants commercialized in brazil. | this study analysed 100 plants employed in brazil as ingredients to infusions for their caffeic acid, 3-caffeoylquinic acid (3-cqa), 4-caffeoylquinic acid (4-cqa), 5-caffeoylquinic acid (5-cqa), 3,4-dicaffeoylquinic acid (3,4-dqa), 3,5-dicaffeoylquinic acid (3,5-dqa), and 4,5-dicaffeoylquinic acid (4,5-dqa) contents. the samples were collected from public markets and analysed using ultra-high performance liquid chromatography (uplc). the highest concentrations of chlorogenic acids were found in ... | 2017 | 28784513 |
| synthesis, characterization, and application of a zn (ii)-imprinted polymer grafted on graphene oxide/magnetic chitosan nanocomposite for selective extraction of zinc ions from different food samples. | a novel zn(ii) imprinted polymer was synthesized via a co-precipitation method using graphene oxide/magnetic chitosan nanocomposite as supporting material. the synthesized imprinted polymer was characterized by fourier transform infrared spectrometry (ftir) and scanning electron microscopy (sem) and applied as a sorbent for selective magnetic solid phase extraction of zinc followed by its determination by flame atomic absorption spectrometry. the kinetic and isothermal adsorption experiments wer ... | 2017 | 28764087 |
| does oolong tea (camellia sinensis) made from a combination of leaf and stem smell more aromatic than leaf-only tea? contribution of the stem to oolong tea aroma. | the raw materials used to make oolong tea (camellia sinensis) are a combination of leaf and stem. oolong tea made from leaf and stem is thought to have a more aromatic smell than leaf-only tea. however, there is no available evidence to support the viewpoint. in this study, sensory evaluation and detailed characterization of emitted and internal volatiles (not readily emitted, but stored in samples) of dry oolong teas and infusions indicated that the presence of stem did not significantly improv ... | 2017 | 28764024 |
| formation and emission of linalool in tea (camellia sinensis) leaves infested by tea green leafhopper (empoasca (matsumurasca) onukii matsuda). | famous oolong tea (oriental beauty), which is manufactured by tea leaves (camellia sinensis) infected with tea green leafhoppers, contains characteristic volatile monoterpenes derived from linalool. this study aimed to determine the formation mechanism of linalool in tea exposed to tea green leafhopper attack. the tea green leafhopper responsible for inducing the production of characteristic volatiles was identified as empoasca (matsumurasca) onukii matsuda. e. (m.) onukii attack significantly i ... | 2017 | 28764007 |
| novel acetylcholinesterase inhibitors from zijuan tea and biosynthetic pathway of caffeoylated catechin in tea plant. | zijuan tea is a special cultivar of yunnan broad-leaf tea (camellia sinensis var. assamica) with purple buds, leaves, and stems. phytochemical study on this tea led to the discovery of three hydroxycinnamoylated catechins (hccs) (1-3), seven other catechins (4-10), three proanthocyanidins (11-13), five flavones and flavone glycosides (14-18), two alkaloids (19, 20), one steroid (21), and one phenylpropanoid glycoside (22). the isolation and structural elucidation of the caffeoylated catechin (1) ... | 2017 | 28763966 |
| characterization and expression profiling of camellia sinensis cinnamate 4-hydroxylase genes in phenylpropanoid pathways. | cinnamate 4-hydroxylase (c4h), a cytochrome p450-dependent monooxygenase, participates in the synthesis of numerous polyphenoid compounds, such as flavonoids and lignins. however, the c4h gene number and function in tea plants are not clear. we screened all available transcriptome and genome databases of tea plants and three c4h genes were identified and named csc4ha, csc4hb, and csc4hc, respectively. both csc4ha and csc4hb have 1518-bp open reading frames that encode 505-amino acid proteins. cs ... | 2017 | 28763022 |
| antioxidant properties of green tea aroma in mice. | green tea ('sencha'), made from the leaves of camellia sinensis, is the most well-researched antioxidant beverage. the major source of its antioxidant activity is polyphenols, consisting mainly of catechins (flavan-3-ols). however, little is known about the physiological effects of green tea aroma, which lacks catechins. in the present study, we performed inhalation experiments with green tea aroma to evaluate its antioxidant activity in mice. as a result, the urinary 8-hydroxydeoxyguanosine lev ... | 2017 | 28751804 |
| the anti-aging and anti-oxidation effects of tea water extract in caenorhabditis elegans. | tea includes puer tea, black tea, green tea and many others. by using model organism caenorhabditis elegans, the anti-aging and anti-oxidation effects of tea water extract were systemically examined in this study. we found that water extract of puer tea, black tea and green tea all increased the lifespan of worms, postponed aβ-induced progressive paralysis in alzheimer's disease transgenic worms, and improved the tolerance of worms to the oxidative stress induced by heavy metal cr6+. moreover, t ... | 2017 | 28750751 |
| transcriptome profiling using single-molecule direct rna sequencing approach for in-depth understanding of genes in secondary metabolism pathways of camellia sinensis. | characteristic secondary metabolites, including flavonoids, theanine and caffeine, are important components of camellia sinensis, and their biosynthesis has attracted widespread interest. previous studies on the biosynthesis of these major secondary metabolites using next-generation sequencing technologies limited the accurately prediction of full-length (fl) splice isoforms. herein, we applied single-molecule sequencing to pooled tea plant tissues, to provide a more complete transcriptome of c. ... | 2017 | 28744294 |
| trends in fluid consumption and beverage choices among adults reveal preferences for ayran and black tea in central turkey. | beverages are globally significant sources of water in the diet. there is a lack of knowledge about fluid intake from beverage and water consumption in turkey. thus, the aim of this study was to examine the type of drinks preferred at meals and snacks as well as the daily fluid, beverage and water intakes based on age and gender. | 2017 | 28731553 |
| colorectal cancer and inflammatory bowel diseases: effects of diet and antioxidants. | it is well established that oxidative stress is common in inflammatory bowel diseases (ibds). accordingly, antioxidants are recommended for treatment. the aim of this study is to compare the effects of antioxidants contained in the various types of tea on symptoms and evolution of ibd and colorectal cancer (crc). analysis of the literature revealed that the theaflavin-3, 30-digallate (tfdg) contained in black tea, and epigallocatechin-3-o-gallate (egcg) contained in green tea have protective eff ... | 2017 | 28726358 |
| cellular antioxidant, methylglyoxal trapping, and anti-inflammatory activities of cocoa tea (camellia ptilophylla chang). | cocoa tea (camellia ptilophylla chang) is a naturally low caffeine-containing but gallocatechin gallate (gcg)-rich tea cultivar, though its biological activities have not been extensively explored. herein, we evaluated the in vitro cellular antioxidant, methylglyoxal trapping, and anti-inflammatory activities of water extract of green tea from cocoa tea (cwe) and yunnan daye tea (camellia sinensis) (ywe), and their predominant bioactive components gcg and epigallocatechin gallate (egcg) for comp ... | 2017 | 28725904 |
| identification of a flavonoid glucosyltransferase involved in 7-oh site glycosylation in tea plants (camellia sinensis). | flavonol glycosides, which are often converted from aglycones in a process catalyzed by udp-glycosyltransferases (ugts), play an important role for the health of plants and animals. in the present study, a gene encoding a flavonoid 7-o-glycosyltransferase (csugt75l12) was identified in tea plants. recombinant csugt75l12 protein displayed glycosyltransferase activity on the 7-oh position of multiple phenolic compounds. in relative comparison to wild-type seeds, the levels of flavonol-glucosides i ... | 2017 | 28725058 |
| black tea source, production, and consumption: assessment of health risks of fluoride intake in new zealand. | in countries with fluoridation of public water, it is imperative to determine other dietary sources of fluoride intake to reduce the public health risk of chronic exposure. new zealand has one of the highest per capita consumption rates of black tea internationally and is one of the few countries to artificially fluoridate public water; yet no information is available to consumers on the fluoride levels in tea products. in this study, we determined the contribution of black tea as a source of di ... | 2017 | 28713433 |
| six phenylalanine ammonia-lyases from camellia sinensis: evolution, expression, and kinetics. | phenylalanine ammonia-lyase (pal), the branch point enzyme controlling the flow of primary metabolism into second metabolism, converts the l-phenylalanine (l-phe) to yield cinnamic acid. based on the sequencing data available from eight transcriptome projects, six pal genes have been screened out, cloned, and designated as cspala-cspalf. the phylogenetic tree showed that cspals were divided into three subgroups, pala and palb, palc and pald, and pale and palf. all six cspals exhibited indiscrimi ... | 2017 | 28711790 |
| catechin composition and antioxidant activity of black teas in relation to brewing time. | black tea infusions are one of the most popular beverages across the world. their extract composition depends on several factors, brewing time being one of the most important determinants. the aim of the present study was to determine the catechin composition of different black tea infusions using a validated lc electrospray ionization time-of-flight ms method. additionally, total phenolic content (tpc) and antioxidant activity of infusions were evaluated using folin-ciocalteu reagent and stable ... | 2017 | 28707612 |
| extrapolative microrna precursor based ssr mining from tea est database in respect to agronomic traits. | tea (camellia sinensis, (l.) kuntze) is considered as most popular drink across the world and it is widely consumed beverage for its several health-benefit characteristics. these positive traits primarily rely on its regulatory networks of different metabolic pathways. development of microsatellite markers from the conserved genomic regions are being worthwhile for reviewing the genetic diversity of closely related species or self-pollinated species. although several ssr markers have been report ... | 2017 | 28683768 |
| oolong tea: a critical review of processing methods, chemical composition, health effects, and risk. | oolong tea (ot) is a traditional chinese tea (camellia sinensis) and is especially popular in south china. this review is to comprehensively summarize the miscellaneous research that has been done towards to the processing, phytochemistry, health benefit, and risk of ot. these literatures were carried out not only from different electronic databases but also from text books written in english, japanese, and chinese, including those traditional records tracing back to the tang dynasty (a.d. 618-9 ... | 2017 | 28678527 |
| pyramiding of tea dihydroflavonol reductase and anthocyanidin reductase increases flavan-3-ols and improves protective ability under stress conditions in tobacco. | tea (camellia sinensis) is one of the richest sources of flavan-3-ols, an important class of flavonoids. the expression level of gene-encoded key regulatory enzymes of flavan-3-ol/anthocyanin biosynthetic pathway, dihydroflavonol 4-reductase (dfr) and anthocyanidin reductase (anr), has been highly correlated with the flavan-3-ol contents and antioxidant activity in tea plant. in the present study, pyramiding of csdfr and csanr in tobacco was achieved. however, single transgenic tobacco overexpre ... | 2017 | 28664364 |
| healthy dietary patterns decrease the risk of colorectal cancer in the mecca region, saudi arabia: a case-control study. | colorectal cancer (crc) is the first most common cancer in males and the third most common cancer in females in saudi arabia. dietary habits are strongly associated with the inhibition or proliferation of malignancy. therefore, this study is aiming to investigate the risks and protective benefits of dietary factors affecting crc in the mecca region of saudi arabia. | 2017 | 28662634 |
| functional characterization of tea (camellia sinensis) myb4a transcription factor using an integrative approach. | green tea (camellia sinensis, cs) abundantly produces a diverse array of phenylpropanoid compounds benefiting human health. to date, the regulation of the phenylpropanoid biosynthesis in tea remains to be investigated. here, we report a cdna isolated from leaf tissues, which encodes a r2r3-myb transcription factor. amino acid sequence alignment and phylogenetic analysis indicate that it is a member of the myb4-subgroup and named as csmyb4a. transcriptional and metabolic analyses show that the ex ... | 2017 | 28659938 |
| neurochemical and behavioral effects of green tea (camellia sinensis) as observed in animals exposed to restraint stress. | clinical studies on psychiatric patients suggest that life events stress precipitates depression. the possible involvement of 5-hydroxy tryptamine (5-ht; serotonin) in depression and other behavioral deficits is also suggested by clinical studies. as a natural stimulant, green tea (camellia sinensis) diminishes stress, worry and anxiety, allowing the brain to focus and concentrate better. previously we have reported that beneficial effects of green tea might be associated with altered levels of ... | 2017 | 28649074 |
| effects of kaolin (m-99-099) application on antioxidant and phenolic compounds in tea leaves (camellia sinensis l.o. kuntze). | in this study, the effects of kaolin (m-99-099) applications on the total phenolic and antioxidant contents of tea leaves (camellia sinensis (l.) o. kuntze) harvested in three different periods were investigated. for this purpose, four different strategies including standard fertilizer application (t), 3% kaolin+standard fertilizer application (ka1), 6% kaolin+standard fertilizer application (ka2), and control (c) (nothing applied) were used to compare the effects of these strategies on total ph ... | 2017 | 28639055 |
| some engineering properties of shelled and kernel tea (camellia sinensis) seeds. | camellia sinensis is the source of tea leaves and it is an economic crop now grown around the world. tea seed oil has been used for cooking in china and other asian countries for more than a thousand years. tea is the most widely consumed beverages after water in the world. it is mainly produced in asia, central africa, and exported throughout the world. some engineering properties (size dimensions, sphericity, volume, bulk and true densities, friction coefficient, colour characteristics and mec ... | 2017 | 28638865 |
| consumers' acceptance of medicinal herbs: an application of the technology acceptance model (tam). | the shift in consumers' preferences from synthetic to 'natural' products has led to a resurgence of interest in medicinal plants, particularly in developing countries. however, research data about consumers' preferences for particular products is hard to find. | 2017 | 28625892 |
| effect of the type of brewing water on the chemical composition, sensory quality and antioxidant capacity of chinese teas. | the physicochemical characteristics, sensory quality, and antioxidant activity of tea infusions prepared with purified water (pw), mineral water (mw), mountain spring water (msw), and tap water (tw) from hangzhou were investigated. the results showed that the taste quality, catechin concentration, and antioxidant capacity of green, oolong, and black tea infusions prepared using mw and tw were significantly lower than those prepared using pw. extraction of catechins and caffeine was reduced with ... | 2017 | 28624083 |
| evaluation of the effects of three plant species (myrtus communis l., camellia sinensis l., zataria multiflora boiss.) on the healing process of intraoral ulcers in rats. | use of traditional medicine to relieve human sufferings has a very long history. the effects of these plants in wound curing and subsequently making the best mucosa patch for treatment of oral ulcers is still under investigation. | 2017 | 28620637 |
| α-copaene is an attractant, synergistic with quercivorol, for improved detection of euwallacea nr. fornicatus (coleoptera: curculionidae: scolytinae). | the tea shot-hole borer, euwallacea fornicatus eichhoff, is an ambrosia beetle endemic to asia and a pest of commercial tea, camellia sinensis (l.) kuntze. recently, a complex of species morphologically similar to e. fornicatus has been recognized, which includes new pests established in israel and the usa, both in california and florida. collectively termed e. nr. fornicatus, these cryptic species carry symbiotic fusarium spp. fungi, some of which cause dieback disease in susceptible hosts, whi ... | 2017 | 28609448 |
| hplc method for measurement of human salivary α-amylase inhibition by aqueous plant extracts. | control of hyperglycemia is an important treatment in metabolic disorders such as type ii diabetes and obesity. α-amylase, as the first enzyme of glucose release from dietary polysaccharides, is a potential target to identify new sources of novel anti-obesity and anti-diabetic drugs. in this work, different herbal extracts as α-amylase inhibitors were studied by measuring the rate of the cleavage of a maltooligomer substrate 2-chloro-4-nitrophenyl-β-d-maltoheptoside. measurement of chromophore c ... | 2017 | 28605974 |
| physiologically based pharmacokinetic modeling of tea catechin mixture in rats and humans. | although green tea (camellia sinensis) (gt) contains a large number of polyphenolic compounds with anti-oxidative and anti-proliferative activities, little is known of the pharmacokinetics and tissue dose of tea catechins (tcs) as a chemical mixture in humans. the objectives of this study were to develop and validate a physiologically based pharmacokinetic (pbpk) model of tea catechin mixture (tcm) in rats and humans, and to predict an integrated or total concentration of tcm in the plasma of hu ... | 2017 | 28603626 |