نتایج جستجو برای: condensed structral formula

تعداد نتایج: 106943  

2005
Tetsuya Narushima Masahiro Kitajima

the leading and most frequently downloaded papers, letters and topical reviews to Journal of Physics: Condensed Matter, arguably the world’s most authoritative source of topical information for condensed matter physicists and materials and surface scientists. Journal of Physics: Condensed Matter covers experimental and theoretical studies of the structural, thermal, mechanical, electrical, magn...

Journal: :Talanta 2000
E C Ferreira A R Nogueira

Studies involving the kinetic reaction between vanillin and condensed tannins were developed using a flow injection system with spectrophotometric determination. A solution of the monomeric compound (-)-epicatechin was used as the analytical standard. This compound was chosen due to its structure, which is similar to a polymeric unit of the condensed tannin present in plants. The results indica...

2016
Sen Lin Qing Li Bao Yang Xuewu Duan Mingwei Zhang John Shi Yueming Jiang

Condensed tannin is a ubiquitous polyphenol in plants that possesses substantial antioxidant capacity. In this study, we have investigated the polyphenol extraction recovery and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity of the extracted polyphenol after litchi pericarp is treated with Aspergillus awamori, Aspergillus sojae or Aspergillus oryzae. We have further explored the activ...

Journal: :Molecules 2010
Shu-Dong Wei Hai-Chao Zhou Yi-Ming Lin Meng-Meng Liao Wei-Ming Chai

The structures of the condensed tannins from leaf, stem bark and root bark of Acacia confusa were characterized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis, and their antioxidant activities were measured using 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging and ferric reducing/antioxidant power (FRAP) assays. The results s...

2002
BRIAN J. KOPPER VALERIE N. JAKOBI TOD L. OSIER RICHARD L. LINDROTH

This research tested the effects of paper birch, Betula papyrifera Marshall, condensed tannin on larval performance of the whitemarked tussock moth,Orgyia leucostigma (J. E. Smith). We conducted laboratory bioassays on Þfth stadium larvae. Larvae were reared on one of three diets: control (no condensed tannin), moderate condensed tannin (8.8% dry mass), and high condensed tannin (17.6% dry mass...

2007
Willie R. Watson Michael G. Jones Sharon E. Tanner Tony L. Parrott

This paper reports the initial results of a test series to evaluate a method for determining the normal incidence impedance of a locally reacting acoustically absorbing liner, located on the lower wall of a duct in a grazing incidence, multi-modal, nonprogressive acoustic wave environment without ow. This initial evaluation is accomplished by testing the methods' ability to converge to the know...

Journal: :The Journal of Cell Biology 1973
Carol Johmann Ronald A. Eckhardt Martin A. Gorovsky

Histones were extracted from isolated mouse liver nuclei, and from mouse liver condensed and extended chromatin. Mouse liver histones were found to be very similar to those of calf thymus in their solubility properties, relative electrophoretic mobilities, and molecular weights as determined on SDS-polyacrylamide gels. Quantitative analysis by high-resolution gel electrophoresis demonstrated a ...

Journal: :Proceedings of the Japan Academy, Series B 2019

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