نتایج جستجو برای: polyphenol

تعداد نتایج: 6412  

Journal: :The Bulletin of Tokyo Dental College 2008
Ayumi Yamanaka-Okada Emiko Sato Tomoko Kouchi Ryuta Kimizuka Tetsuo Kato Katsuji Okuda

The purpose of this study was to investigate the effect of cranberry polyphenol fraction on mutans streptococci. Hydrophobicity is an important factor in the adherence of bacteria to the tooth surface. We found that cranberry polyphenol fraction significantly decreased the hydrophobicity of Streptococcus sobrinus 6715, Streptococcus mutans MT8148R and JC2 in a dose-dependent manner (p<0.05). Bi...

Journal: :Bioscience, biotechnology, and biochemistry 2002
Satoe Yaginuma Takuo Shiraishi Hiroaki Ohya Kiharu Igarashi

To assess effects of the environmental stress on polyphenol compounds (polyphenols) in plants, the polyphenol contents were investigated in the seedlings of safflower (Carthamus tinctrius L.) and cucumber (Cucumis sativus L.) grown under three types of growth conditions: control; light stress, irradiated with strong light in the visible wavelength range; and light/water stress, irradiated with ...

Objective: Pili (Canarium ovatum, Engl.) pomace is an underutilized agricultural waste that possesses great potential to be regarded as a functional food ingredient. The aim of this study was to measure the polyphenol content and antioxidant activity of pili pomace drink and determine the influence of heating on these parameters. Moreover, it sought to assess the acute effects of thermally proc...

Journal: :Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan 2008
Manabu Nakazono

Fluorescence (FL), chemiluminescence (CL) and bioluminescence (BL) have been extensively focused on luminescence assays. Various FL and CL compounds have been synthesized and evaluated their FL and CL properties. This review describes development of highly selective and sensitive FL and CL reagents by derivatizing luminol, indole and polyphenol. Luminol derivatives were used for measuring enzym...

Journal: :international journal of advanced biological and biomedical research 2013
shahriar saeidian bahaaldin rashidzadeh

in order to better understand how to prevent enzymatic greenning, it is important to understand  kinetic properties of polyphenol oxidase.  we investigated the effect of sds on the rate of catechol oxidation by small cherry tomato partial purified ppo. ppo activity increased with increasing sds concentration. the most effective concentration of sds was 0.8, 1 and 1.25 mm in according to ph and ...

2013
A Singh A Demont L Actis Goretta A Lévêques S Holvoet S Nutten

Background Polyphenols are naturally derived bioactive compounds that have been attributed numerous health benefits. We have previously characterized the beneficial effect of a polyphenol enriched apple extract in a murine model of food allergy. The objective of the current study was to elucidate the class of bioactive polyphenols that are implicated in the beneficial anti-allergic effect of po...

2014
P. G. Padmaja B. L. Shwetha G. Swetha J. V. Patil

This research investigated the role of oxidative enzymes in the defense response of sorghum, Sorghum bicolor (L.) Moench (Poales: Poaceae), to the sorghum shoot fly, Atherigona soccata Rondani (Diptera: Muscidae). Changes in polyphenol oxidase and peroxidase activity and total protein content were observed in resistant and susceptible sorghum genotypes in response to A. soccata feeding. Resista...

Journal: :The British journal of nutrition 2014
Anurag Singh Audrey Demont Lucas Actis-Goretta Sébastien Holvoet Antoine Lévêques Melissa Lepage Sophie Nutten Annick Mercenier

Polyphenols are naturally derived bioactive compounds with numerous reported health benefits. We have previously reported on the beneficial effect of a polyphenol-enriched apple extract in a murine model of food allergy. The objectives of the present study were to elucidate the class of bioactive polyphenols that exhibit a beneficial anti-allergic effect and to assess whether the protective eff...

Journal: :journal of herbal drugs (an international journal on medicinal herbs) 2011
nargess soltani delroba roya karamian masoud ranjbar

background &amp; aim: glycyrrhiza l. (fabaceae) consists of perennial herbs grow in sandy soils with hard lightness. three species of the genus grow in iran, among them g. glabra l. has the widest distribution. it is well known in english as licorice and the root extract includes flavonoids and glycyrrhizin are used widely in medicine, food industry, tobacco products and other industries. liqui...

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