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Showing papers on "Polygonum published in 1999"


Journal ArticleDOI
TL;DR: Three compounds showing strong antioxidant activity were identified by spectral methods and by comparison with authentic samples to be gallic acid, catechin, and 2,3,5, 4'-tetrahydroxystilbene 2-O-beta-D-glucopyranoside.
Abstract: An activity-directed fractionation and purification process was used to identify the antioxidative components of Polygonum multiflorum Thunb. (PM). Dried root of PM was extracted with 95% ethanol and then separated into water, ethyl acetate, and hexane fractions. Among these only the ethyl acetate phase showed strong antioxidant activity by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) test when compared with water and hexane phases. The ethyl acetate fraction was then subjected to separation and purification using silica gel column chromatography and Sephadex LH-20 chromatography. Three compounds showing strong antioxidant activity were identified by spectral methods ((1)H NMR, (13)C NMR, and MS) and by comparison with authentic samples to be gallic acid, catechin, and 2,3,5, 4'-tetrahydroxystilbene 2-O-beta-D-glucopyranoside.

248 citations




01 Jan 1999
TL;DR: The authors provide a list of 41 additions, reinstatements, and significant range extensions for the flora of Arkansas, noticed and documented for the first time.
Abstract: The authors provide a list of 41 additions, reinstatements, and significant range extensions for the flora of Arkansas. Alternanthera paronychioides, Bowlesia incana , Eleocharis montevidensis, Hypoxis curtissii, Nandina domestica, Polygonum setaceum, and Trifolium lappaceum are reported as new and persistent elements, while Ipomea xleucantha, Mirabilis jalapa, Najas minor, and Veronica polita are reinstated to the state flora. A number of alien weeds- Cynoglossu m zeylanicum, Eleusine tristachya, Euphorbia hirta, Scoparia dulcis, Tragopogon pratensis, Trifolium nigrescens, Verbena montevidensisare noticed and documented for the first time, however, their persistence is not known.

5 citations


Patent
20 Aug 1999
TL;DR: In this article, an insecticide application to termites is obtained comprising at least one member selected from a plant, an extract of the plant, and an ooze (or exudate) of a plant.
Abstract: An insecticide application to termites is obtained comprising at least one member selected from a plant, an extract of the plant, and an ooze (or exudate) of the plant, wherein the plant belongs to at least one genus selected from the group consisting of the genus Geranium, the genus Morus, the genus Artemisia, the genus Diospyros, the genus Crataegus, the genus Curcuma, the genus Rubia, the genus Polygonum, the genus Gardenia, the genus Cornus, the genus Uncaria, the genus Rheum, the genus Terminalia and the genus Saussurea. The extract may be a substance extracted with at least one member selected from the group consisting of water and a hydrophilic solvent. The insecticide exhibits high insecticidal and insect-controlling activity against insects (e.g., sanitarily injurious insects, insects injurious to houses and particularly to timber such as termites), being highly safe to human beings and animals and not adversely affecting the environment.

5 citations


Journal Article
TL;DR: The interferon inducing abilities of eleven ethanolic extracts obtained from nine taxons of Polygonum L. genus, were tested in the cell culture of monkey kidney and showed that the protective titre (the highest dilution which protected cells by 50% against virus infection) of the interferons-like materials was 1:10-1:15.
Abstract: The interferon inducing abilities of eleven ethanolic extracts obtained from nine taxons of Polygonum L genus, were tested in the cell culture of monkey kidney The extracts from the herb of Polygonum amphibium L and the rhizome and fruit of Polygonum bistorta L induced a substance showing an interferon-like activity Biological activity studies showed that the protective titre (the highest dilution which protected cells by 50% against virus infection) of the interferon-like materials was 1:10-1:15

4 citations



Patent
17 Aug 1999
TL;DR: An insecticide comprising a component derived from a plant, plant extract and/or plant exudate from the genus Geranium, Morus, Crataegus, Rubia, Artemisia, Curcuma, Gardenia, Cornus, Terminalia, Saussurea, Uncaria, Rheum, Diospyros and Polygonum is new.
Abstract: An insecticide comprising a component derived from a plant, plant extract and/or plant exudate from the genus Geranium, Morus, Crataegus, Rubia, Artemisia, Curcuma, Gardenia, Cornus, Terminalia, Saussurea, Uncaria, Rheum, Diospyros and/or Polygonum is new. An Independent claim is also included for the preparation of the insecticide.

2 citations


Patent
04 Aug 1999
TL;DR: Polygonum divaricatum wine as mentioned in this paper is a tonic wine that is made from polygonal divarica juice, edible alcohol, sugar, honey and Chinese medicine component.
Abstract: The present invention utilizes polygonum divaricatum to produce tonic wine and maintains the natural nutritive components in polygonum divariatum as possible. Polygonum divaricatum wine consists of polygonum divaricatum juice, edible alcohol, sugar, honey and Chinese medicine component and is made through fermentation or blending with edible alcohol. It has rich nutritive components and has the functions of preventing diseases, enhancing physique and resisting cancers.

1 citations