نتایج جستجو برای: polyphenol
تعداد نتایج: 6412 فیلتر نتایج به سال:
The inhibitory effect of onion extract on cassava leaf polyphenol oxidase was investigated. The polyphenol oxidase from cassava leaves was strongly inhibited by various anti-browning agents such as L-ascorbic acid and L-cysteine. The percentage of inhibition increased with the increased of anti-browning agents concentrations. The addition of heated onion extract exhibited a stronger inhibitory ...
partial purification and characterisation of polyphenol oxidase from tomatoes (solanum lycopersicum)
polyphenol oxidase (ppo) from tomatoes was extracted and partially purified through (nh4)2so4 precipitation, dialysis and ion exchange chromatography. the activity of polyphenol oxidase was investigated in solanum lycopersicum. spectrophotometric method was used to assay the enzyme activity and the kinetic constants - maximum enzyme velocity (vmax) and michealis - menten constant (km). of the ...
COMBINED WITH FK506 IMMUNOSUPPRESSION *Yoshihide Morimoto; +*Ryosuke Kakinoki; * Ryosuke Ikeguchi; *Ken Nakayama; * Tomoyuki Yamakawa; ** Suong-Hyu Hyon; *Takashi Nakamura +* Kyoto University, Kyoto, Japan ** Institute for Frontier Medical Science, Kyoto University, Kyoto, Japan [email protected] INTRODUCTION Autogenous nerve grafting is the commonest method for treating peripheral ne...
There are insufficient data to provide conclusive evidence on the health effects of most flavonoid subclasses. Future research of polyphenol bioactivity requires a more complete understanding of their intake, bioavailability and metabolism. The following summarises the limitations of polyphenol research as described across various reviews throughout the literature and presents the key requireme...
PURPOSE Green tea and green tea polyphenols have been shown to possess cancer preventive activities in preclinical model systems. In preparation for future green tea intervention trials, we have conducted a clinical study to determine the safety and pharmacokinetics of green tea polyphenols after 4 weeks of daily p.o. administration of epigallocatechin gallate (EGCG) or Polyphenon E (a defined,...
OBJECTIVE To estimate total polyphenol availability in fruits and vegetables commonly consumed in Brazil and its regions, and to identify the main food sources that constitute food habits in this country. METHODS Total polyphenols were determined by the Folin-Ciocalteu method and the availability estimated according to the Pesquisa de Orçamentos Familiares 2002/ 2003 (2002/2003 Family Budget ...
To investigate the anti-atherosclerosis related mechanism of blueberries, the phenolic acids (PAs) content, antioxidant and anti-inflammatory activities, as well as the microRNA (miRNA) regulation of polyphenol fractions in blueberry samples from China were studied. Sixteen batches of blueberries including 14 commercialized cultivars (Reka, Patriot, Brigitta, Bluecrop, Berkeley, Duke, Darrow, N...
We identified urinary polyphenol metabolite patterns by a novel algorithm that combines dimension reduction and variable selection methods to explain polyphenol-rich food intake, and compared their respective performance with that of single biomarkers in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. The study included 475 adults from four European countries (Ger...
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