Abstract: Polygonum odoratum Lour. has been reclassified as Persicaria odorata (Lour.) Sojak [Wilson, K. L. Polygonum sensu lato (Polygonaceae) in Australia. Telopea 1988, 3, 177-182]; other synonyms currently used are Vietnamese mint or Vietnamese coriander and, in Malaysia, Daun Laksa or Laksa plant. The aerial parts of Laksa plant are highly aromatic, and they contain many organic compounds such as (Z)-3-hexenal, (Z)-3-hexenol, decanal, undecanal, and dodecanal that are typical for green, citrus, orange peel, and coriander odors. In addition to these aldehydes, 3-sulfanyl-hexanal and 3-sulfanyl-hexan-1-ol were discovered for the first time in this herb. The fresh leaves are pungent when they are chewed, although the active compound has never been identified. The pungency of Persicaria hydropiper (L.) Spach (formerly Polygonum hydropiper L., synonym water pepper) is produced by polygodial, a 1,4-dialdehyde derived from drimane terpenoids. We also identified polygodial as the active pungent compound in P. odorata (Lour.) Sojak.

Abstract: One new stillbene glucoside (6), along with five known compounds (1–5), were isolated from the roots ofPolygonum multiflorum Thumb., and their chemical structures established based on physicochemical and spectroscopic data. Of the compounds, compound3 showed DNA topoisomerase I and II inhibitory activities.

Abstract: The invertebrate colonization was investigated during 56-day decomposition of two macrophytes species ( Eichhornia azurea and Polygonum ferrugineum ). The aim was to determine the role of macroinvertebrates in the process of leaf fragmentation. During material analysis, 2096 invertebrates were associated with E.azurea and 6154 were associated with P. ferrugineum , identified in 18 taxons, with predominance of Diptera larvae (Chironomidae family specially), followed by Oligochaeta species and microcrustaceans such as Cladocera and Copepoda. In both macrophytes the macroinvertebrates showed a significant increase of density through the process of decomposition, which is probably associated with the loss of phenolic compounds. Results suggest that macrophytes specimens show specific associations with their consumers, i.e., the succession process of colonization becomes singular according to the phenolic characteristics of the plant.

Abstract: To investigate patterns in seed germination and survival at three different soil depths over a long time span, seeds of Rumex obtusifolius, Polygonum longisetum and Oenothera biennis were examined as a function of season (spring, autumn) and soil depth (3, 10, 30 cm). Buried seeds were exhumed after 3 years and subjected to two different temperature treatments. These were gradually increasing and decreasing temperatures, starting at 5 and 35°C, respectively. Treatments commenced after a 5-day acclimation to the initial starting temperature with light. With increasing burial depth, diurnal temperature fluctuations decreased and seed survival increased. Seed dormancy patterns changed with season and burial depths for all the species. Polygonum seeds germinated between 15 and 35°C in spring, but not in autumn. Rumex seeds germinated between 15 and 25°C in both spring and autumn. The optimal germination temperature for Oenothera seeds differed between spring (>30°C) and autumn (ca 30°C). Seed dormancy and survival are controlled by soil temperature fluctuations that differ with soil depth and seeds appear to have season-sensing and burial-depth detecting mechanisms based upon temperature fluctuations.

Abstract: Choice tests were conducted to determine feeding preferences of European corn borer, Ostrinia nubilalis (Hubner) (Lepidoptera: Crambidae), neonates for 15 species of plants Percentage of neonates accepting (found on) each leaf disc after 24 h was measured using choice tests Initially, nine species of plants were evaluated The following year, 10 plant species were evaluated during O nubilalis first generation and 11 species during the second generation Pennsylvania smartweed, Polygonum pennsylvanicum (L), had the highest percentage of neonates accepting leaf discs in both years Other plants with high acceptance rates included swamp smartweed, Polygonum amphibium L; velvetleaf, Abutilon theophrasti Medicus; cocklebur, Xanthium strumarium L; and yellow foxtail, Setaria glauca (L) Corn, Zea mays L, consistently had low percentages of neonates accepting leaf discs along with common waterhemp, Amaranthus rudis Sauer Implications these results may have on O nubilalis host plant selection in central Iowa's corn dominated landscape are considered

Abstract: The genus Polygonum(Polygonaceae)contains rich medicinal plantsAmong the 120 Polygonum species in China,81 species were recorded to have medicinal uses in traditional Chinese medicine and folk medicineFrom 1980s,more and more work including chemical and biological activity studies on this genus were reportedIn this paper,the studies on chemistry and bioactivity of genus Polygonum mainly from 1990 were reviewed

Abstract: The species Polygonum punctatum, Polygonum hydropiperoides, Polygonum ferrugineum, Polygonum acuminatum were analyzed and compared with commercialized samples of "erva-de-bicho". This analysis was performed using high performance liquid chromatography. It was verified that the analyzed samples show a distinct. The chromatographic profile of the samples commercialized as "erva-de-bicho" was similar to the Polygonum acuminatum or Polygonum ferrugineum profiles, or did not present peaks in the chromatograms. The chromatographic profiles were monitored in the 254 nm and 362 nm.

Abstract: Bioguided fractionation of the methanol extract of aerial parts from Polygonum alpinum L (Polygonaceae) was investigated using the exudation phase of inflammation in aseptic arthritis model, which is produced by carrageenan and radical-scavenging properties Flavonoid-containing fractions showed anti-inflammatory and radical-scavenging activities Therefore, isolation and structure elucidation of flavonoids were carried out The eight flavonol glycosides, which were quercetin 3-O-arabinofuranoside (= avicularin) (1), quercetin 3-O-β-glucuronopyranoside (2), quercetin 3-O-α-rhamnopyranosyl (1 → 6)-β-glucopyranoside (3), quercetin 3-O-β-galacturonopyranoside (4), quercetin 3-O-β-glucopyranoside (5), kaempferol 3-O-β-galactopyranoside (6), quercetin 3-O-β-galactopyranoside (= hyperoside) (7), and myricetin 3-O-β-galactopyranoside (8), were isolated from the methanol herb extract of Polygonum alpinum The structures were established by spectroscopic methods

Abstract: The general compositions of protein, amino acid, phosphatide and minerals in Cynanchum bungei were measured, and the nutritious component were compared with Polygonum multiflorum Thunban. and other kinds of Cynanchum sp., which provide theoretical bases for exploitation on edible biologic medicines on Cynanchum sp.. The results suggest that Cynanchum bungei is a kind of good new resource of functional food.

Abstract: A survey of nine plants growing on the soil polluted by manganese mine in Daxin County,the Guangxi Zhuang Autonomous Region was carried out.The results indicated that the exceptional-high concentration of Mn was the most important limiting factor for plant growth among three metals(Mn,Zn and Ni).Pteris vittata,which roots showed good metal-enrichment of Mn and Ni,was turned out to have good tolerant ability of Mn,Zn and Ni according to the analysis in the paper.Miscanthus floridulus,Erigeron bonariensis,Polygonum lapathifolium and Erigeron canadensis were proved to have good Mn-tolerant ability.Microstegium gratum,Digitaria sanguinalis and Alocasia macrorrhiza were Zn-tolerant plants while Miscanthus floridulus and Erigeron canadensis were Ni-tolerant plants.Further researches which are of some significance to these plants will be still in process though hyperaccummulators of three heavy metals were not found in these plants.

Abstract: Objective To study the dynamic changes of Emodin, Physcion, Emodin-8-O-beta-D-glucopyranoside, Physcion-8-O-beta-D-glucopyranoside and 2,3,5,4'-tetrahydtoxysilbene-2-O-beta-D-glucopyranoside in Polygonum multiflorum during preparation and analyze their changing laws Methods Five major constituents before and after preparation were determined by RP-HPLC methods Results The five ingredients decreased significantly after preparation Conclusion The major chemical constituents of Polygonum multiflorum decrease significantly, suggesting the necessarity of prepared Polygonum multiflorum in clinical application worth studying

Abstract: We examined nrDNA ITS sequences from 16 taxa of Polygonum sect. Persicaria(Polygonaceae) in Korea to infer relationships among the taxa within the section. A neighbor-joining tree obtained from the analysis of the ITS sequences suggest that the ITS region was useful inferring the phylogenetic relationships among the taxa. The neighbor-joining tree indicates that P.amphibium is clearly separated from the other Korean taxa. The tree aldo reveals the presence of five major groups in the Korean taxa of the section; 1) P. lapathifolium var. lapathifolium, 2) P. persicaria and P. viscoferum, 3) P. orientable and P. viscosum, 4) P. japonicum and 5) a group including the remaining taxa. these relationships depicted on the ITS tree are largely congruent with those inferred from morphological and anatomical characters.

Abstract: The invention relates to a gourment powder sesame paste whose material is polygonum extractive as polygonum powder, wherein the polygonum powder can treat osteoporosis, reduce blood fat, etc.

Abstract: This invention relates to Chinese medicine filed , which discloses polygonum multiflorum thunb, haw thorn, and root of herbaceous peony content identification by nature in the dragon and blood easy cream and establishes the method to test the content of 2io3io5io4i» -four hydroxy styrenes -2-O-a‰-D- glucosidase.

Abstract: The contents of total flavonoids in different extracting parts of Polygonum mulflorum, were measured by spectrophotometer as compared with standard rutin, the results showed that the maximum total flavonoids was measured in ethal acetate preparation, the minimum total flavonoids was measured in petrol ether preparation.

Abstract: Results obtained in the experiment showed that pendimethalin had higher weed control efficiency than fluchloralin, however, pendimethalin became phytotoxic to mustard and non-selective in action at all the doses. Among the herbicides fluchloralin 1.25 kg a.i. ha-1 registered highest seed yield of mustard (10.39 q. ha-1) as it controlled the weeds like Polygonum percsicaria, Polygonum pensylvanicum, Polygonum orientale and Stellaria midia effectively. However, black necrotic symptom at the base of the plant was observed during siliqua development stage, which disappeared at later part of crop growth. Weeds removed huge amount of plant nutrients from soil to the tune of 165.13 kg N, 22.54 kg P and 158.84 kg K ha-1. Fluchloralin at 1.00 kg a.i. ha-1 was effective as preemergence herbicide in mustard to control weeds and to conserve the plant nutrients in soil on account of 118.08 kg N, 15.56 kg P and 104.58 kg K ha-1.

Abstract: Different quantity of polygonum hydropiper was added in Xiaoqu respectively and its effects on microbial species and amount in Xiaoqu,the saccharifying power and liquefying power of Xiaoqu,and the fermenting rate were studied.The results suggested that the addition of adequate quantity of polygonum hydropiper(addition level as 12 %) had favorable effects on Xiaoqu quality.Besides,the influencing mechanism of polygonum hydropiper on Xiaoqu pH value and Xiaoqu permeability were also investigated in this paper.

Abstract: The feasibility was discussed that adopting SCF-CO_2 to extract effective constituent(piceid,resveratrol and emodin)from Chinese herb Polygonum cuspidatum.Extracting effective constituents by SCF-CO_2 was studied under varying extraction conditions and different pretreatments.The effect of factors on SCF-CO_2 was examined respectively, and the best extraction conditions are obtained.

Abstract: ObjectiveTo study the effect of injection of Radix codcnopsitis pilosulas,Radix Polygonum multiflorum,Gastrodia clata Blume,dwarf lilyturf tuber,Atractylis macrocephala koidz and Dipsacus asperciaes on the learning and remembering and on the expression of superoxide dismutase(SOD),glutathione peroxidase(GSH-PX) and maleic dialdehyde(MDA) in blood,liver,kidney,hippocampus,cortex of rapid aging rat.MethodsRat model of acquired remembering deficiency induced by haloperidol was employed.Electricity-stimulated jumping stand was used for observation rat behavior change and meanwhile concentrations of SOD,GSH-PX and MDA in different organs or tissues of the animal were detected.ResultsIn contrast with control groups,the learning and remembering maintained and concentrations of SOD and GSH-PX strikingly increased,whereas MDA highly decreased in the drug-treated groups.The differences were statistically significant(P0.001).ConclusionThe mixed injection of Radix codcnopsitis pilosulas,Radix Polygonum multiflorum etc.can improve effect of learning and remembering and can up-regulate the anti-oxidase expression,which suggests that the efficacy of Radix codcnopsitis pilosulas and Radix Polygonum multiflorum,etc.in improvement of diseases probably be associated with enhancing of anti-oxidase expression against damages of oxygen free radicals.

Abstract: PROBLEM TO BE SOLVED: To provide a methioninase inhibitor using a plant extract without having any effect on human body and having high safety as an active ingredient, and inhibiting the production of methylmercaptane of bad smelling substance by inhibiting the methioninase of bacteria in an oral cavity, and an oral composition, beverage and food containing the same. SOLUTION: This inhibitor contains the active ingredient of 1 kind or ≥2 kinds selected from a group consisting of Haemotoxylon campechianum, Prunus salicina, Xylopia aethiopica, Rhus aromatica, Polygonum multiflorum, Polygonum bistorta, Dryopteris crassirhizoma, Areca catechu, Geranium maculatum, Salix alba, Collinsonia canadensis, Prunus africanum, Cassia mimosoides, Sassafras albidum, Storobilanthes flaccidifolius, Quercus robur, Mucuna birdwoodiana, Trachycarups fortunei, Juglans nigra, Oenothera biennis, Tilia europaea, Juniperus virginiana, Santalum album, Paeonia suffruticosa, Cinnamomum cassia, Thuja plicata, Thuja occidentalis and Rheum officinale. The oral composition, beverage and food containing the same are also provided. COPYRIGHT: (C)2007,JPO&INPIT

Abstract: Objective To evaluate the qualities of Radix Polygonum Multiflori,a Chinese traditional herb,from different habitats.Methods 2,3,5,4′-tetrahydroxy-stilbene-2-O-β-D-glycoside in the extracts of Radix Polygonum Multiflori was used a quality index of the herb.The content of the compound was analyzed on a C_(18) HPLC column.The mobile phase consisted of acetonitrile-water(25∶75),and the detection wavelength was at 320 nm.Results The calibration curve was linear in the range of 0.2460~2.460 μg(r=0.9999) for the glycoside.The average recovery was 99.5%(RSD=2.0%).Conclusion This method could be used for the quality evaluation of Radix Polygonum Multiflori from different habitats.