Showing papers on "Polygonum published in 2009"
TL;DR: By displacing native species and reducing nutrient quality of litter inputs, knotweed invasion has the potential to cause long-term changes in the structure and functioning of riparian forests and adjacent aquatic habitats.
90 citations
TL;DR: In this article, extracts of roots and stems of Polygonum cuspidatum Sieb. and P. sachalinensis F. Schmidt ex Maxim from China and Switzerland were analyzed by online HPLC/UV/ESI-MS to ascertain the phytochemical differences between the original and invasive exotic varieties.
57 citations
TL;DR: LDCM of Autumn, possessing the highest content of polygodial and the lowest MICs, appeared to be the most suitable extract for being used as antifungal in the traditional Argentinean medicine.
49 citations
TL;DR: The antimicrobial activity of methanol and acetone extracts of Butomus umbellatus, Polygonum amphibium, and two species of the genus Sparganium against three Gram-positive, five Gram-negative bacteria and one fungus was assessed by the disk diffusion method.
Abstract: The antimicrobial activity of methanol and acetone extracts of Butomus umbellatus, Polygonum amphibium, and two species of the genus Sparganium (S. erectum and S. emersum)against three Gram-positive, five Gram-negative bacteria and one fungus was assessed by the disk diffusion method. The microorganisms used were Staphylococcus aureusATCC-29740, Escherichia coli ATCC-25922, Pseudomonas aeruginosa ATCC-15442, Salmonella typhi NCTC-9394, Klebsiella pneumoniae NCTC-5046, Proteus vulgaris ATCC-7829, Bacillus subtilis ATCC-6633, Corynebacterium diphteriae RSHM-633 and Candida albicans ATCC-10231. Methanol extracts of the plants did not exhibit any inhibitory activity against any of the microorganisms, while the acetone extracts of the all tested plants only showed significant activity against Bacillus subtilis, with inhibition zones and minimal inhibitory concentration values in the 7-16 mm and 0.49-12.50 mg/mL ranges, respectively.
20 citations
TL;DR: The methanolic extract of the roots of Polygonum multiflorum was found to show inhibitory activity towards farnesyl protein transferase (FPTase), and bioassay-guided fractionation resulted in the isolation of two anthraquinone glycosides, as inhibitors of FPTase.
Abstract: The methanolic extract of the roots of Polygonum multiflorum (Polygonaceae) was found to show inhibitory activity towards farnesyl protein transferase (FPTase). Bioassay-guided fractionation of the methanolic extract resulted in the isolation of two anthraquinone glycosides, as inhibitors of FPTase. These compounds inhibited the FPTase activity in a dose-dependent manner.
20 citations
Patent•
10 Feb 2009
TL;DR: A pharmaceutical composition comprising effective amount of silver nanoparticles and extracts of Polygonum Multiforum Thunb, a method for increasing hair growth by administering the said pharmaceutical composition locally to a host, and use thereof are disclosed as discussed by the authors.
Abstract: A pharmaceutical composition comprising effective amount of silver nanoparticles and extracts of Polygonum Multiforum Thunb, a method for increasing hair growth by administering the said pharmaceutical composition locally to a host, and use thereof are disclosed.
16 citations
TL;DR: In this paper, the total flavonoid and taxifolin contents and the radical-scavenging activity of 50% ethanol extracts of Polygonum orientale leaves, stems, and seeds were explored by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay.
Abstract: The present study was designed to explore the total flavonoid and taxifolin contents and the radical-scavenging activity of 50% ethanol extracts of Polygonum orientale leaves, stems, and seeds by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay The extract with higher total flavonoid content has higher radical scavenging activity Taxifolin (IC50 = 283 μmol/L) has antioxidant activity stronger than that of rutin (IC50 = 308 μmol/L) The free radical-scavenging potentials of chloroform, ethyl acetate, water, ethanol, and methanol extracts of Polygonum orientale seeds were also investigated The free radical-scavenging abilities of various extracts were determined as: methanol > ethanol > water > ethyl acetate > chloroform This article has been retracted Link to the retraction 102298/ABS181226060E
14 citations
Journal Article•
TL;DR: Among these compounds, I - IV, VI - XI are isolated from the leaves of Polygonum multiflorum for the first time.
Abstract: OBJECTIVE To study the chemical constituents of the leaves of Polygonum multiflorum. METHODS The chemical constituents were extracted with water and separated by manifold chromatography technique, and their structures were determined by spectral analysis. RESULTS Eleven compounds were isolated and identified as physcion (I), emodin (II), noreugenin (III), apigenin (IV), hyperoside (V), rutin (VI), vitexin (VII), 2,3,5 ,4'-tetrahydroxy-stibene-2-O-beta-D-glucoside (VIII), beta-amyrin (IX), beta-sitosterol (X), daucosterol( XI). CONCLUSION Among these compounds, I - IV, VI - XI are isolated from the leaves of Polygonum multiflorum for the first time.
11 citations
Journal Article•
TL;DR: Nine compounds were obtained and identified as alphitonin, methyl 3, 4-dihydroxybenzoate, apocynin, kaempferol, 1,3,5-trihydroxybenzene, 3,3'-dimethoxyellagic-acid-4-O-beta-D-glucoside, quercetin-3-O
Abstract: OBJECTIVE To study the chemical constituents in the active portion from the flowers of Polygonum oriental. METHOD Chromatographic techniques were employed for isolation and purification of the constituents and their structures were determined by spectral analysis and chemical evidence. RESULT Nine compounds were obtained and identified as alphitonin (1), methyl 3, 4-dihydroxybenzoate (2), apocynin (3), kaempferol-3-O-beta-D-glucoside (4), 1,3,5-trihydroxybenzene (5), 3,3'-dimethoxyellagic-acid-4-O-beta-D-glucoside (6), kaempferol-3-O-alpha-L-rhamnoside (7), quercetin-3-O-alpha-L-rhamnoside (8), kaempferol (9). CONCLUSION Compounds 2, 4, 5 were isolated from P. oriental for the first time and compounds 1, 3 were firstly obtained from the genus Polygonum.
10 citations
TL;DR: In this paper, the phenolic composition of the aerial part of four Polygonum species (P. divaricatum, P. angustifolium, and P. aviculare) by HPLC was studied.
Abstract: The genus Polygonum L. (Polygonaceae) is represented in the flora of Siberia by 23 species that are used to treat inflammatory diseases of the kidneys and gastrointestinal tract. P. aviculare, the herb of which is used for diseases of the lymphatic system and kidney-stone illness and as a tonic and hemostatic agent, has been described in Tibetan medicine under the name “bri-ta-sa-dzin.” The Tibetan name “nya-lo” corresponds to the species P. divaricatum and P. amphibium L. [1, 2]. The herb and roots of these plants are used for inflammatory diseases of the stomach, intestines, gall bladder, uterus, and bladder [3]. The chemical composition of P. aviculare has been studied most. The phenolic compositions of P. divaricatum L. and P. angustifolium Pall. have been reported [4]. Phenolcarboxylic acids and flavonoids have been isolated from P. amphibium [5]. Our goal was to study the phenolic composition of the aerial part of four Polygonum species (P. divaricatum, P. angustifolium, P. amphibium, and P. aviculare) by HPLC. The phenolic composition of the Polygonum plants was studied by HPLC for groups of compounds using isocratic elution. Three groups of compounds were examined, phenolcarboxylic and hydroxycinnamic acids (gallic, protocatechoic, chlorogenic, ferulic, caffeic, p-coumaric) (I), flavonoid glycosides (rutin, hyperoside, luteolin-7-glycoside, isoquercetin, avicularin, cosmosiin, kaempferol glycoside) (II), and flavonoid aglycons (luteolin, quercetin, apigenin, kaempferol) (III).
10 citations
Journal Article•
TL;DR: A new Polygonum L. species, P. istanbulicum Keskin, is described from the Istanbul province of Turkey and is compared with other allied species and an updated list of all Polygonal species recorded from Turkey is provided.
Abstract: A new Polygonum L. species, P. istanbulicum Keskin, is described from the Istanbul province of Turkey and is compared with other allied species. In addition, an updated list of all Polygonum (s. l.) species recorded from Turkey is provided.
Journal Article•
TL;DR: In this paper, the chemical constituents of Polygonum capitatum were identified by physical-chemical methods and spectral data, and 14 compounds were obtained from the petroleum ether fraction of P.capitatum for the first time.
Abstract: Objective:To study the chemical constituents of Polygonum capitatum.Methods:Isolation and purification of the chemical constituents were carried out repeatedly by silica gel column and Sephadex gel column chromatography.The structures of compounds were identified by physical-chemical methods and spectral data.Results:Fourteen compounds were identified from the petroleum ether fraction of P.capitatum:tricosanol(Ⅰ),pentacosanol(Ⅱ),docosanoic acid(Ⅲ),lignoceric acid(Ⅳ),hexadecanoic-2,3-dihydroxy-propyleste(Ⅴ),docosanoic-2,3-dihydroxypropyleste(Ⅵ),oleanolic acid(Ⅶ),ursolic acid(Ⅷ),octacosa-1,27-diene(Ⅸ),docosyl ferulate(Ⅹ),β-sitosterol(Ⅺ),tricosane(Ⅻ),hexadecanoic acid(),and linoleic acid().Conclusion:Compounds Ⅰ-Ⅹ are obtained from P.capitatum for the first time.Compounds Ⅸ and Ⅹare obtained from Polygonum for the first time.
Journal Article•
TL;DR: The hairy roots of Polygonum multiflorum were able to convert the aromatic exogenous substrate, thymol, into its glycoside, and the time course indicated the relationship between DMP and co-cultivated period.
Abstract: OBJECTIVE The exogenous substrate, thymol, was firstly biotransformed by using suspension hairy roots of transgenic Polygonum multflorum, and its biotransformed situation was also investigated METHODS After five days co-cultivated period, the transformed product was isolated by Thin Layer Chromatograph and Column Chromatograph, with the structure elucidated by physic-chemical methods and spectra data Meanwhile, the time course of biotransformation (T-C) for thymol was also measured by HPLC to illuminate its bio-transformed situation RESULTS The glycosylated product, namely DMP, was isolated and purified, which structure was determined as 5-methyl-2-(1-methylethyl) phenyl- beta-D-glucopyranoside And the distribution of DMP in the medium or culture was varied in different co-cultivated periods, and for five days co-cultivated period, it mainly existed in the medium CONCLUSION The hairy roots of Polygonum multiflorum were able to convert the aromatic exogenous substrate, thymol, into its glycoside Furthermore, the time course indicated the relationship between DMP and co-cultivated period
01 Jan 2009
TL;DR: Allelopathy tests revealed strong phytotoxicity of the leaf and root extracts, and discovered two strong allelochemicals resveratrol and rhein, as well as piceid, resver atroloside or piceatannol glucoside with stronger activity than (-) - catechin.
Abstract: This work aimed to reveal the invasive mechanism of invasiv plant species and to study their beneficial uses. An acetylcholinesterase inhibitor linarin was isolated from Buddleja davidii Franch (Buddlejaceae), and the structure-activity relationship was studied. HPLC/UV/ESI-MS analyses demonstrated different phytochemcial profiles of Polygonum cuspidatum Sieb. & Zucc. and P. sachalinensis F. Schmidt ex Maxim (Polygonaceae) from China and Switzerland. Seven compounds of 21 isolated compounds were reported for the first time from these two species. Allelopathy tests revealed strong phytotoxicity of the leaf and root extracts, and discovered two strong allelochemicals resveratrol and rhein, as well as piceid, resveratroloside or piceatannol glucoside with stronger activity than (-) - catechin. Other biotests showed the potential of the isolated compounds against α-glucosidase, aromatase or as anti-inflammatory agents. At last the total content of resveratrol in the invasive Swiss variety of P. cuspidatum was measured to prove it a source of resveratrol.
Journal Article•
TL;DR: In this article, eight compounds were isolated from the ethanol extract of Polygonum runcinatum Buch.-Ham.var.sinense Hemsl. and identified by spectral analysis as 3,3′,4′-trimethyl ellagic acid(1), 3, 3′-di-O-methyl ellagic acids(2),3,3'',4''-tri-O''methylellagic acid (3, 3'', 4''-methyllellagi acid(3), 4'', β-D-g
Abstract: Eight compounds were isolated from the ethanol extract of Polygonum runcinatum Buch.-Ham.var.sinense Hemsl.and identified by spectral analysis as 3,3′,4′-trimethyl ellagic acid(1), 3,3′-di-O-methyl ellagic acid(2),3,3′,4-tri-O-methylellagic acid-4′-O-β-D-glucoopyranoside(3),3,3′-di-O-methylellagic acid-4′-O-β-D-glucoopyranoside(4),gallic acid(5),ethyl 3,4,5-trihydroxybenzoate(6),bis (2-ethylhexy1) phthalate(7),and daucosterol(8).All of them were obtained from the plant for the first time.
Journal Article•
TL;DR: The study revealed some distinctive anatomical features such as epidermal cells outline, single or mixed type of stomata on the single leaf surface and presence or absence of trichomes adaxially and abaxially.
Abstract: A study of foliar epidermis in thirteen species of Polygonum was performed. The study revealed some distinctive anatomical features such as epidermal cells outline, single or mixed type of stomata on the single leaf surface and presence or absence of trichomes adaxially and abaxially. The shape of epidermal cells was variable; stomata were constant in most of the species and one-three celled glandular peltate trichomes were examined in few species, while non-glandular trichomes were totally absent. Although the analyzed epidermal characters have systematic value, they are to likely be stable at specific level.
Journal Article•
TL;DR: In this paper, the chemical constituents of Polygonum perfoliatum L. were isolated by chromatography on silica gel and Sephadex LH-20, and the structures of compounds were identified by physicochemical properties and spectral analyses(MS and NMR).
Abstract: Objective:To investigate the chemical constituents of Polygonum perfoliatum L.Methods: The chemical constituents of P.perfoliatum L.were isolated by chromatography on silica gel and Sephadex LH-20.The structures of compounds were identified by physicochemical properties and spectral analyses(MS and NMR).Results: Twelve compounds were isolated and identified as quercetin(1),isorhamnetin(2),hyperrosid(3),quercitrin(4),protocatechuic acid(5),gallic acid(6),ellagic acid(7),3,3′-di-O-methyl ellagic acid(8),1-O-galloyl-β-D-glucose(9),mucic acid dimethyl ester-2-O-gallate(10),ethyl caffeate(11) and mucic acid dimethyl ester(12).Conclusion: Compounds 10 and 12 were isolated from the genus Polygonum for the first time.Compounds 2,3,7,8,9 were obtained from the title plant for the first time.
Journal Article•
TL;DR: associated species showed associated species had allelopathic to Mikania micrantha H.B.K.seedling and effects of alien populations were more than that of local species.
Abstract: Allelopathy of 5 associated species(Cyperus difformis,Polygonum hydropiper,Alternanthera philoxcroides,Bidens pilosa L.and Ipomoea batatas)on invasive plant Mikania micrantha H.B.K was studied.The bioactivity of aqueous extract from overground part of 5associated species was evaluated on the growth of Mikania micrantha H.B.K.seedling.The results showed that aqueous extract from 5 associated species inhibited growth of Mikania micrantha H.B.K.seedling and the inhibiting order was Alternanthera philoxcroidesCyperus difformisBidens pilosa L.,the Polygonum hydropiper and Ipomoea batatas had similar the inhibition rate but were obviously weak to others.The weight were inhibited more than stem and root.These results showed associated species had allelopathic to Mikania micrantha H.B.K.seedling and effects of alien populations were more than that of local species.
Patent•
20 May 2009
TL;DR: In this paper, a Polygonum Cuspidatum (PC) extract was used to prevent and treat synalbumin resistant and correlative metabolic diseases and the like, and a preparation method for the polygonum extract was presented.
Abstract: The invention discloses Polygonum Cuspidatum (PC) and application of an extract thereof to preparing medicament for preventing and treating synalbumin resistant and correlative metabolic diseases, discloses a preparation method for the extract at the same time, and moreover, also discloses application of pharmaceutical composition comprising polygonum or (and) the extract of the polygonum as a medicament and a health-care product, in particular application to preparing the medicament and the health-care product for preventing and treating the synalbumin resistant and correlative metabolic diseases and the like.
Journal Article•
TL;DR: To investigate the chemical constituents in the roots of Polygonum amplexicaule var.
Abstract: OBJECTIVE To investigate the chemical constituents in the roots of Polygonum amplexicaule var sinense METHOD The compounds were isolated by column chromatography on silica gel and Sephadex LH-20 The structures were identified by means of IR, 1H-NMR, 13C-NMR and MS analyses RESULT Eight compounds were isolated and identified as friedelin (1), beta-sitosterol (2), simiarenone (3), angelicin (4), psoralen (5), palmitic acid (6), (-)-epicatechin (7), and quercetin (8), respectively CONCLUSION All compounds were isolated from this species for the first time and compounds 1, 3-6 were obtained from this genus for the first time
TL;DR: In this article, the authors measured the contents of total nitrogen and total phosphorus in Phragmites communis, Phalaris arundinacea and Polygonum lapathifolium, and investigated the influence of various plants on the spatial and seasonal distributions of nitrogen and phosphorus in the wetland soil.
Abstract: The Mt. Beigu wetland, which has undergone periodical changes in water level, lies by the Yangtze River, and its dominant plants are Phragmites communis, Phalaris arundinacea and Polygonum lapathifolium. In order to study the distribution characteristics of nitrogen and phosphorus in the ecological system of the Mt. Beigu wetland, the authors measured the contents of total nitrogen and total phosphorus in Phragmites communis, Phalaris arundinacea and Polygonum lapathifolium, and the contents of nitrogen and phosphorus in the wetland soils with different plant species. In addition the authors investigated the influence of various plants on the spatial and seasonal (spring/autumn) distributions of nitrogen and phosphorus in the wetland soil. The contents of nitrogen and phosphorus in Phalaris arundinacea are significantly higher than those of the other two plant species in the same part. Secondary pollution of phosphorus in the wetland results mainly from Phalaris arundinacea. Phragmites communis effectively carries away nitrogen and phosphorus in the wetland soil in the wet season. The capacity of Polygonum lapathifolium to remove nitrogen is lowest among the 3 species of plants. These findings offer a theoretical foundation for the selection of plant species to restore the ecological environment and for the selection of time and depth for purging silt on the riverside wetland.
Journal Article•
TL;DR: Eight compounds were isolated from the genus Polygonum for the first time and identified as quercetin-3'-O-beta-D-galactoside, pigenin, luteolin, p-hydroxybenzaldehyde, and beta-sitosterol.
Abstract: OBJECTIVE To investigate the chemical constituents in herbs of Polygonum jucundum. METHOD The 85% ethanol extract was separated by means of silica gel and Sephadex LH-20 column chromatography. The compounds isolated from the plant were identified by physicochemical properties and spectroscopic evidence. RESULT Eight compounds were isolated and identified as: quercetin-3'-O-beta-D-galactoside (1), 8-methoxyquercetin (2), pigenin (3), luteolin (4), quercetin (5), 3,5,7-trihydroxychromone (6), p-hydroxybenzaldehyde (7), beta-sitosterol (8). CONCLUSION All compounds were isolated from this plant for the first time, compounds 5- 8 were isolated from the genus Polygonum for the first time.
01 Dec 2009
Journal Article•
TL;DR: Two cases of toxic hepatitis due to Polygonum multiflorum ingestion are discussed and a review of the relevant literature is presented.
Abstract: The desire to maintain youth and beauty has led to an increase in the use of health foods and herbs. Because Polygonum multiflorum Thunb. is thought to prevent hair loss and maintain black hair, this herb in particular has captured public interest in Korea and China. Although there have been many reports regarding the toxic effects of herbs and health foods, the potential toxicity of this herb has not yet been reported. Here, we discuss two cases of toxic hepatitis due to Polygonum multiflorum ingestion and present a review of the relevant literature.
Journal Article•
TL;DR: The chemical constituents extracted from tubers of Polygonum multiflorum Thunb originated from Deqing of Guangdong Province were isolated by using chromatographic techniques.
Abstract: The chemical constituents extracted from tubers of Polygonum multiflorum Thunb. originated from Deqing of Guangdong Province were isolated by using chromatographic techniques. On the basis of spectral data,eight phenolic components were identified,such as physcion-8-β-D-(6'-O-acetyl)glucoside (1),physcionin (2),emodin (3),epicatechin (4),torachrysone 8-O-β-D-glucopyranoside (5),2,3,5,4'-tetrahydroxystilbene 2-O-β-D-glucopyranoside (6),4-hydroxybenzaldehyde (7),5-carboxymethyl-7-hydroxy-2-methylchromone (8). Compounds 1,7 and 8 were isolated from this plant for the first time.
Patent•
17 Jun 2009
TL;DR: In this paper, a polygonum multiflorum thumb nourishing effervescence tablet adopts acid-base reaction to rapidly disintegrate tablets into aqueous solution, so that it not only changes the difficult swallowing in the taking process, but also improves the taste, thereby enhancing the absorption of nutrients in the process of enjoying the drinks.
Abstract: The present invention relates to a polygonum multiflorum thumb product, as well as a manufacturing technique of polygonum multiflorum thumb nourishing effervescence tablet The polygonum multiflorum thumb nourishing effervescence tablet takes the polygonum multiflorum thumb extract as its main components, and the effervescing agent is formed by mixing alkaline granules and acidic granules, wherein, the alkaline granules are produced by polygonum multiflorum thumb extract, sodium carbonate, lactose, glucose, and sweeteners; and the acidic particles granules are produced by polygonum multiflorum thumb extract, citric acid, and glucose The inventive polygonum multiflorum thumb nourishing effervescence tablet adopts acid-base reaction to rapidly disintegrate tablets into aqueous solution, so that it not only changes the difficult swallowing in the taking process, but also improves the taste, thereby enhancing the absorption of nutrients in the process of enjoying the drinks
Patent•
02 Dec 2009
TL;DR: A polynucleotide for determining species of Polygonum multiflorum Thunberg, Cynanchum silfordii Max. and Cyanchum auriculatum is provided in this paper.
Abstract: PURPOSE: A primer for determining species of Polygonum multiflorum Thunberg, Cynanchum silfordii Max. and Cyanchum auriculatum is provided to prevent misuse and counterfeit product. CONSTITUTION: A polynucleotide for determining Polygonum multiflorum Thunberg comprises gene sequence of sequence number 23 and 24. A polynucleotide for determining Cynanchum wilfordii Max. Hemsl. and Cynacum auriculatum Royle ex Wight has gene sequence of the sequence numbers 22 and 25. A method for determining species of Polygonum multiflorum Thunberg, Cynanchum silfordii Max. and Cyanchum auriculatum comprises: a step of extracting DNA from a sample; a step of performing PCR with the DNA using the primer; and a step of isolating PCR product through electrophoresis then confirming PCR product.
Journal Article•
Journal Article•
TL;DR: The flowers of seven species in polygonum investigated indicated that the breeding system of these species was mainly out-crossing by the way of partly mixed selfing, and the P/O ratio was positively correlated to the length of inflorescence and the diameter of the flower.
Abstract: The floral characteristics,pollen-ovule ratio,and out-crossing index of seven species in polygonum were investigated.The results indicated that the breeding system of these species was mainly out-crossing by the way of partly mixed selfing.The P/O ratio was positively correlated to the length of inflorescence and the diameter of the flower.The P/O ratio of the species with homostylous flower was significantly lower than that of the species with heterostylous flower.