نتایج جستجو برای: phenolic compounds

تعداد نتایج: 238682  

2018
Jun Liu Qinlu Lin Xueying Chai Yunchuan Luo Ting Guo

BACKGROUND Phenolic compounds generated in hydrolysis of lignocellulosic materials are major limiting factors for biological production of solvents by Clostridia, but it lacks the attention on the study of adaptation or resistance mechanisms in response to phenolic compounds. RESULTS Gene Cbei_3304, encoding a hypothetical membrane transport protein, was analyzed by bioinformatic method. Afte...

2011
N. Kaushalya Herath Yoshito Ohtani Hideaki Ichiura

A study on the treatment of Kraft pulp mill effluent by ozonation alone, and by combined treatment of ozonation preceded by chemical coagulation, activated carbon adsorption or membrane filtration has been conducted. Initial effluent pH was a major factor deciding the treatment efficiency. When ozonation was conducted alone, more than 70% reduction of color and phenolic compounds could be achie...

2009
Jufang ZHANG Jierong CHEN Xiaoyong LI

Phenolic compounds have very strong toxicity, so it has been paid sharply attention to find an effective way of controlling the wastewater containing phenolic compounds. The work on this subject done by domestic and overseas scholars is studied in this paper, and the progress of researches on low-temperature plasma treatment is summarized through the electrical discharge types, mechanism, kinet...

2015
Leila Abaza Amani Taamalli Houda Nsir Mokhtar Zarrouk Antonio Segura-Carretero David Arráez-Román

Phenolic compounds are becoming increasingly popular because of their potential role in contributing to human health. Experimental evidence obtained from human and animal studies demonstrate that phenolic compounds from Olea europaea leaves have biological activities which may be important in the reduction in risk and severity of certain chronic diseases. Therefore, an accurate profiling of phe...

Journal: :Food chemistry 2012
Sofia F Reis Dilip K Rai Nissreen Abu-Ghannam

A fractionation method was used to extract phenolic compounds from apple pomace (AP) involving a first extraction with water and subsequent extractions of the same residue with two different organic solvents. The water extracts obtained contained high amounts of phenolic compounds with high antioxidant capacity. However, the second and third extractions of the same residue still extracted consi...

Journal: :Food technology and biotechnology 2017
Hebe Vanesa Beretta Florencia Bannoud Marina Insani Federico Berli Pablo Hirschegger Claudio Rómulo Galmarini Pablo Federico Cavagnaro

Allium sp. vegetables are widely consumed for their characteristic flavour. Additionally, their consumption may provide protection against cardiovascular disease due to their antiplatelet and antioxidant activities. Although antiplatelet and antioxidant activities in Allium sp. are generally recognised, comparative studies of antiplatelet and antioxidant potency among the main Allium vegetable ...

A hadjiakhondi M Matin Yekta N Rezaei Ashtiani N Yassa R Hajiaghaee SHR Alavi Y Ajani

From methanolic extract of aerial parts of Peucedanum ruthenicum M. Bieb (Apiaceae) collected from Mazandaran province of Iran, four flavonoids namely Isorhamnetin 3-0-rutinoside 1, rutin 2, quercetin 3, morin 4 and two phenolic acids namely caffeic acid 5 and p-coumaric acid 6 have been isolated by Paper Chromatography (PC) and crystallization. Their structures were elucidated by MS, 1H, 13C N...

2015
Qiu Sun Jörg Heilmann Burkhard König

Considering the many secondary natural metabolites available from plants, phenolic compounds play a particularly important role in human health as they occur in significant amounts in many fruits, vegetables and medicinal plants. In this review natural phenolic compounds of plant origin with significant anti-angiogenic properties are discussed. Thirteen representatives from eight different natu...

2013
ANNA GAWRON-GZELLA MARLENA DUDEK-MAKUCH IRENA MATŁAWSKA

We used DPPH scavenging assays to study the antioxidant activity of three native Polish species of blackberry leaves (Rubus kuleszae Ziel., R. fabrimontanus (Sprib.) Sprib. and R. capitulatus Utsch.). All the studied extracts (methanolic, water, methanolic-water) showed high DPPH free radical scavenging activity (IC50 450.0–186.0 μg/ml). The most effective of the studied species was Rubus kules...

Journal: :Food chemistry 2015
Sandrina A Heleno Anabela Martins Maria João R P Queiroz Isabel C F R Ferreira

Phenolic acids are present in our diet in different foods, for example mushrooms. Due to their bioactive properties, phenolic acids are extensively studied and there is evidence of their role in disease prevention. Nevertheless, in vivo, these compounds are metabolized and circulate in the organism as glucuronated, sulphated and methylated metabolites, displaying higher or lower bioactivities. ...

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