Activity-guided isolation of antioxidants from the roots of Rheum emodi.
Summary of "Activity-guided isolation of antioxidants from the roots of Rheum emodi."
An activity-guided isolation and purification process was used to identify the DPPH free radical scavenging components of Rheum emodi. The activity-guided isolation revealed that eugenol, gallic acid, quercetin, rutin, epicatechin, desoxyrhapontigenin, rhapontigenin and mesopsin are the major phenolic compounds responsible for the antioxidant activity of the roots of R. emodi.
a Bio-Organic Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India.
This article was published in the following journal.
Name: Natural product research
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22568567
- DOI: http://dx.doi.org/10.1080/14786419.2012.682994
Medical and Biotech [MESH] Definitions
A plant genus of the family POLYGONACEAE. Members contain chrysophanic acid, rhein, EMODIN, and other anthraquinones. The roots were formerly used as purgatives.
Caustic extract from the roots of Podophyllum peltatum and P. emodi. It contains PODOPHYLLOTOXIN and its congeners and is very irritating to mucous membranes and skin. Podophyllin is a violent purgative that may cause CNS damage and teratogenesis. It is used as a paint for warts, skin neoplasms, and senile keratoses.
The immediate physical zone surrounding plant roots that include the plant roots. It is an area of intense and complex biological activity involving plants, microorganisms, other soil organisms, and the soil.
Root-like underground horizontal stem of plants that produces shoots above and roots below. Distinguished from true roots which don't have buds and nodes. Similar to true roots in being underground and thickened by storage deposits.
The extent to which an enzyme retains its structural conformation or its activity when subjected to storage, isolation, and purification or various other physical or chemical manipulations, including proteolytic enzymes and heat.
Rheum emodi is a storehouse of a large number of anthraquinone derivatives which are known for a large number of biological activities of significant potency. In this work, a study on the interactions...
Six stilbenes were isolated from the methanol extract of Rheum undulatum rhizomes by bioactivity-guided fractionation. The structures of the compounds were determined by spectroscopic analysis ((1)H-,...
Bioactivity-guided isolation of the methanolic extract of the roots of Angelica koreana led to the isolation of four new bisabolane-type sesquiterpenoids, osterivolones A-D (1-4) together with four kn...
The roots of Ulmus macrocarpa Hance (Ulmaceae) have been used as an oriental traditional medicine for the treatment of inflammation, ulcers, cancers, and parasites. Activity guided isolation from the...
Cooked rhubarb and wine processed rhubarb are the processed rhubarbs of raw rhizomes from Rheum palmatum L., Rheum tanguticum Maxim. ex Balf. or Rheum officinale Baill. They are clinically used in tra...
The aim of the Antioxidant Study is to compare the efficacy of foods naturally rich in antioxidants with that of antioxidants in a pill form on markers of inflammation and plasma cholester...
To assess the clinical course, prognosis, and risk factors of age-related macular degeneration (AMD) and cataract. To evaluate, in randomized clinical trials, the effects of pharmacologic...
It is known that people with cancer are using antioxidant vitamins at high rates. It is not known if these vitamins are safe to use during cancer treatment. It is not known if common vitam...
Objective: This prospective study aims to examine the outcome of atrial fibrillation (AF) ablation after permanent pulmonary vein antrum isolation or pulmonary vein antrum isolation plus l...
We conduct a randomized study comparing the safety and effectiveness of two interventional ablation techniques for treatment of paroxysmal atrial fibrillation: the segmental pulmonary vei...