Polygonum

About: Polygonum is a research topic. Over the lifetime, 1230 publications have been published within this topic receiving 12765 citations.

Method for processing polygonum multiflorum

Abstract: The invention discloses a method for processing polygonum multiflorum, which comprises the following steps: taking polygonum multiflorum, cutting into slices, steaming for 4-10 hours, drying or baking; taking black soya beans, adding water for stewing filtering to obtain filtering liquid, and concentrating to obtain black soya bean juice; and uniformly stirring the black soya bean juice and the polygonum multiflorum slices, steaming under a high pressure, and drying to form the polygonum multiflorum. The method for processing the polygonum multiflorum has the advantages that the processing time is greatly shorter than that of a normal pressure steaming method, meanwhile the process is simple, the production is easy, and the content of the obtained effective components is higher than that of the normal pressure steaming method.

Chromatographical analysis of phenolic acids in some species of Polygonum L. genus. Part 1 Qualitative analysis by two-dimensional thin layer chromatography (TLC)

Abstract: The Two-Dimensional Thin Layer Chromatography method has been used for the separation and identification of phenolic acids from six taxons of Pohygonum L. genus. The following acids were found: caffeic, p-coumaric, ferulic, p-hydroxybenzoic, m-hydroxybenzoic, vanillic, syringic, p-hydroxyphenylacetic, o-hydroxyphenylacetic, synapic, melillotic, salicylic, gentisic, elagic, gallic, chlorogenic, protocatechuic and homoprotocatechuic. Gallic, ferulic, vanillic, p-coumaric and p-hydroxybenzoic acids were isolated from herb Polygonum convolvulus L. using column chromatography.

Some Characteristics of An Inhibitory Factor in Polygonum Orientate L.1

Abstract: Aqueous extract of leaves of Polygonum orientate L. retarded the germination of test species more than extracts of stem, root and flower of the same plant. In all cases, P. orientale leaf extract adversely affected the seedling growth of mustard and the inhibition was discernible more on the bypocotyl than on the root. Increasing the amount of leaf tissues augmented the inhibitory action and washing removed much of the activity, Phytotoxicity was conspicuous in the extract rather than in the leachate, with the five-day soaked leachate being more potent than ihe three-day one. Successive extractions of the same leaf material showed that the first extract contained most of the active principle (s). Very mature leaves seemed to produce more inhibitor (s) than young and mature leaves. Activity was higher when the bioassay was conducted at 20 or 30 C than at 25 C. Greater toxic effect appeared in the light than in the dark and more during the period ranging from the pre-monsoon to pou-monsoon than during the winter. Extract of dried foliage was less inhibitory than that of fresh foliage, but ash from dry leaves lacked activity. Treatment of aqueous solution of leaves with Norit eliminated much of the inhibitory factor (s) from the solution. The repressing power of the leaf extract was not lost after autoclaving or even after inoculation with a soil micro-organism. The compounds isolated, having inhibitory properties, were possibly luteolin and apigenin glycosides.

Hair growth promoter of polygonum

Abstract: PURPOSE:To extract a composition contained in a leaf, a stem or a seed of a polygonaceous plant and use the extracted component as a hair growth and hair tonic promoter. CONSTITUTION:A hair growth agent or a hair tonic utilizing stimulating properties of a polygonaceous plant is prepared by extracting a component from a leaf, a stem, a root or a seed of Polygonum hydropiper L., which is a polygonaceous plant and mixing the resultant extract with a pantothenic acid- based, a vitamin E-based, a vitamin B-based ingredients, sesame oil, etc., to be a nourishing element for the hair and using the resultant extract as the objective hair growth promoter.