• plant
  • An important prerequisite for studies dealing with these interactions are the polyphenol contents of various alpine plant species and litter of different stages, because they influence the palatability of the litter for decomposer species such as earthworms and millipedes as well as microbes. (uibk.ac.at)
  • In the proposed study we want to analyse the polyphenol contents of fresh plant material and litter of different stages (overwintered litter and one-year old litter) of plant species abundant on alpine areas. (uibk.ac.at)
  • The earliest widely accepted definition of polyphenols, the White-Bate-Smith-Swain-Haslam (WBSSH) definition, was offered and justified by natural product and organic chemist Edwin Haslam and co-workers, based on the earlier natural products research of Edgar Charles Bate-Smith, Anthony Swain, and Theodore White that characterized specific structural characteristics common to plant phenolics used in tanning (i.e., the tannins). (wikipedia.org)
  • Hence, many larger polyphenols are biosynthesized in-situ from smaller polyphenols to nonhydrolyzable tannins and remain undiscovered in the plant matrix. (wikipedia.org)
  • Aureusidin synthase is homologous to plant polyphenol oxidase, but contains certain significant modifications. (wikipedia.org)
  • Ingestion of polyphenols occurs by consuming a wide array of plant foods. (wikipedia.org)
  • In these countries, the use of monotonous plant-based diets, low in animal source food but high in iron absorption inhibitors such as phytic acid or polyphenol, lead to poor iron status or aggravate poor iron status caused by infections. (clinicaltrials.gov)
  • Polyphenols are a huge group of plant metabolites with varying chemical structures. (clinicaltrials.gov)
  • Research has called into question the role of plant polyphenols in cardiovascular health, by finding that their supposed anti-platelet activities are only relevant at high, and physiologically unattainable, concentrations. (anabolicminds.com)
  • Plant polyphenols. (wikipedia.org)
  • Haslam proposed a first comprehensive definition of plant polyphenols based on the earlier proposals of Bate-Smith, Swain and White, which includes specific structural characteristics common to all phenolics having a tanning property. (wikipedia.org)
  • compounds
  • The WBSSH describes the polyphenol class as: generally moderately water-soluble compounds with molecular weight of 500-4000 Da with >12 phenolic hydroxyl groups with 5-7 aromatic rings per 1000 Da where the limits to these ranges are somewhat flexible. (wikipedia.org)
  • The gallic acid dimer, ellagic acid (M.W. 302, right), a molecule at the core of naturally occurring phenolic compounds of varying sizes, is itself not a polyphenol by the WBSSH definition, but is by the Quideau definition. (wikipedia.org)
  • Polyphenol oxidase (PPO or monophenol monooxygenase or Polyphenol oxidase I, chloroplastic) is a tetramer that contains four atoms of copper per molecule, and binding sites for two aromatic compounds and oxygen. (wikipedia.org)
  • Moreover, often the compounds tested were polyphenol aglycones or their sugar conjugates rather than their active metabolites. (mdpi.com)
  • Edible plants also contain thousands of compounds generally called phytochemicals which have unknown effects on disease or health, including a diverse class with non-nutrient status called polyphenols, which remain poorly understood as of 2017. (wikipedia.org)
  • metabolism
  • Moreover, although human gut microbiota is capable of transforming polyphenol glycosides into their aglycone, intestine barrier and first-pass metabolism will transform polyphenols into methoxylated, glucuronidated, sulfated, or other conjugated forms [ 4 ]. (hindawi.com)
  • intake
  • The reviewers stated that research to date had been of poor quality and that large and rigorous trials are needed better to study the science, and to investigate possible adverse effects associated with excessive polyphenol intake. (wikipedia.org)
  • Also, after comparing the accumulation of fat in the liver, it was clear that the simultaneous intake of wheat polyphenols suppressed fat accumulation caused by a high-fat, high-sucrose diet (Fig. 3). (medicalxpress.com)
  • consumption
  • The most common UV/Vis spectrophotometry assay involves the monitoring of the formation of o-quinones, which are the products of polyphenol oxidase-catalysed reactions, or the consumption of the substrate. (wikipedia.org)
  • Other possible effects may result from consumption of foods rich in polyphenols, but are not yet proved scientifically in humans so are not allowed as health statements by regulatory authorities like the U.S. Food and Drug Administration (FDA). (wikipedia.org)
  • The consumption of whole-wheat flour, which contains polyphenols, is expected to possibly prevent metabolic disorders such as diabetes, obesity, and the metabolic syndrome. (medicalxpress.com)
  • Glucose tolerance tests to investigate the effect of wheat polyphenols on glucose metabolic function in mice showed that the decline in glucose tolerance that occurred over 10 weeks due to a high-fat, high-sucrose diet had been suppressed by the simultaneous consumption of wheat polyphenols (Fig. 2). (medicalxpress.com)
  • concentrations
  • The aims of the study are to investigate the effect of different sorghum polyphenol concentrations on human iron absorption and to investigate if the negative impact of the polyphenols can be overcome by using NaFeEDTA as iron compound. (clinicaltrials.gov)
  • tumor
  • Polyphenols from Eriobotrya japonica and their cytotoxicity against human oral tumor cell lines. (greenmedinfo.com)
  • These polyphenols have also been assessed for cytotoxic activity against two human oral tumor (human squamous cell carcinoma and human salivary gland tumor) cell lines. (greenmedinfo.com)
  • PHILADELPHIA - The polyphenols present in green tea help prevent the spread of prostate cancer by targeting molecular pathways that shut down the proliferation and spread of tumor cells, as well as inhibiting the growth of tumor nurturing blood vessels, according to research published in the December 1 issue of Cancer Research. (eurekalert.org)
  • and Case Western Reserve University, Cleveland, Ohio, documented the role of green tea polyphenols (GTP) in modulating the insulin-like growth factor-1 (IGF-1)-driven molecular pathway in prostate tumor cells in a mouse model for human prostate cancer. (eurekalert.org)
  • The green tea polyphenols contributed to minimizing tumor development by governing the amount of vascular endothelial growth factor (VEGF) in the serum of the prostate cancer mouse model. (eurekalert.org)
  • olive oil
  • To date the European Food Safety Authority, which is scientifically assessing health claims made on food products, has rejected all claims on polyphenols except for olive oil. (eufic.org)
  • anticancer
  • Some natural polyphenols share the properties of some anticancer drugs such as etoposide and doxorubicin while other polyphenols may induce DNA mutations in the MLL gene, which are common findings in neonatal acute leukemia. (wikipedia.org)
  • macrophages
  • In this work, the complement-modulating activities, the inhibitory activities on nitric oxide (NO) production in LPS-induced RAW 264.7 macrophages and effects on cell viability of these polyphenols were studied. (mdpi.com)
  • novel
  • The present invention provides a class of novel imide functional polyphenols as well as thermosettable polycyanates and polyepoxides thereof. (google.es)
  • The results demonstrate a novel functionality of wheat polyphenols contained in the outer layers of wheat. (medicalxpress.com)
  • occurs
  • Currently, lack of knowledge about safety suggests that polyphenol levels should not exceed that which occurs in a normal diet. (wikipedia.org)
  • effect
  • No information about the potential enhancing effect of NaFeEDTA in presence of polyphenol is available. (clinicaltrials.gov)
  • Is There a Dose-dependant Effect of Sorghum Polyphenols on Human Iron Absorption and Can it be Overcome by Sodium Iron EDTA or by Adding Vitamin C or Laccase? (clinicaltrials.gov)
  • Figure 1: Activity rhythm improvement effect and anti-obesity effect of wheat polyphenols. (medicalxpress.com)
  • The present study revealed that wheat polyphenols contained in the outer layers of wheat suppress the disruption of activity rhythm and glucose intolerance in model mice of diet -induced obesity, and exhibit a marked anti-obesity effect on the model mice. (medicalxpress.com)
  • Figure 2: Suppression effect of wheat polyphenols on glucose tolerance decline. (medicalxpress.com)
  • Meanwhile, the mice that consumed a high-fat, high-sucrose diet that included wheat polyphenols did not exhibit a nocturnal shift in the rhythm of activity, showing that wheat polyphenols have an effect that improves the rhythm of activity. (medicalxpress.com)
  • Figure 3: Suppression effect of wheat polyphenols on fatty liver. (medicalxpress.com)
  • evaluate
  • In this study, the researchers used model mice of diet-induced obesity that exhibited a nocturnal shift in activity as well as glucose intolerance and obesity in order to evaluate the functionality of wheat polyphenols. (medicalxpress.com)
  • definitions
  • The raspberry ellagitannin (M.W. ~2450), on the other hand, with its 14 gallic acid moieties (most in ellagic acid-type components), and more than 40 phenolic hydroxyl groups, meets the criteria of both definitions of a polyphenol. (wikipedia.org)
  • The report provides a basic overview of the industry including definitions, classifications, applications and industry chain structure.The Tea Polyphenols market analysis is provided for the international markets including development trends, competitive landscape analysis, and key regions development status. (bharatbook.com)
  • natural
  • The definition further states that polyphenols display unique physical and chemical behaviors related to their high molecular weights and profusion of phenolic substructures-precipitation of proteins and particular amine-containing organics (e.g., particular alkaloid natural products), and formation of particular metal complexes (e.g., intense blue-black iron(III) complexes). (wikipedia.org)
  • Natural polyphenols molecular formulas are generally formed from C, H and O.[according to whom? (wikipedia.org)
  • study
  • The Global Tea Polyphenols Industry Report 2015 is a professional and in-depth study on the current state of the Tea Polyphenols industry. (bharatbook.com)
  • The study will include 32 apparently healthy young women which will consume sorghum porridges with different polyphenol levels and sorghum porridges fortified with ferrous sulfate as compared to NaFeEDTA. (clinicaltrials.gov)
  • high
  • The mice were divided into three groups: a normal diet group, a high-fat, high-sucrose diet group, and a group with a high-fat, high-sucrose diet containing 0.4% wheat polyphenols. (medicalxpress.com)
  • In addition, the changes in body weight of the mice that consumed a high-fat, high-sucrose diet containing wheat polyphenols were almost the same as the body weight changes of the mice that consumed a normal diet, which demonstrates that wheat polyphenols suppress weight gain caused by a high-fat, high-sucrose diet (Fig. 1). (medicalxpress.com)