Polygonum

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

Study on Chemical Components for Volatile Oil from Polygonum Flaccidum Messin

Abstract: OBJECTIVE The Polygonum flaccidum Messin is a kind of tradition inside herb medicine of China,having good foreground of development in plant source agrochemical,medicine,food additive et al.The purpose of this study from the molecular level understanding of its chemical composition of active ingredients for a more rational development and utilization of these resources.METHODS The volatile compounds of Polygonum flaccidum Messin were isolated with steam distillation,and identified by capillary GC/MS and the relative contents of the constituents were determined by area nomalization method.RESULTS Fifty volatile components were identified and determined,accounting for 97.84% of the total area of the peaks.CONCLUSION The main volatile compounds are: N-(2-Aminoethyl)aziridine,3,4,5,6-Tetrahydrophthalic anhydride,3-Hexene-1-ol,Hydrogen chloride,2-Methyl-2-tert-butyl-1,3-dithiane,1-Methyl-7-oxoheptyl 2-formyl-4,6-dimethoxybenzoate,Thienobenzofuran,Phosphoric acid,diundecyl methyl ester,Phenanthrene,9-ethyl,Methyl hydrogen disulfide,Cyclopropene,1-bromotrifluoro,2-[4-(Dimethylamino)phenyl]-3-hydroxy-4H-chromen-4-one.

Internet + polygonum multiflorum sowing method

Abstract: The invention provides an Internet + polygonum multiflorum sowing method and belongs to the field of plant planting. The Internet + polygonum multiflorum sowing method comprises the steps of seed collection, seed processing, seeding and field management and the like. Implementation information is collected through a sensor, growth states are analyzed through big data of the Internet by a computer, a planting environment is adjusted timely, and farmers are reminded to perform relevant operations; through soaking by mixed solution of gibberellin and zeatin prior to the seeding, physiological states of the seeds are adjusted, seed dormancy is broken, a layer of sodium nitroprusside is added prior to the seeding; NO and multiple microelements are decomposed when sodium nitroprusside is met with water, NO continuously promotes seed germination, and enough microelements are provided for growth of seedlings, so as to achieve an effect of making the seedlings strong. The Internet + polygonum multiflorum sowing method has the advantages of informationization, intelligence, high germination rate and good seedling quality.

Semi-Synthetic Pyrazoline Derivatives from Polygonum senegalense Chalcones and their Anti-Microbial Activities

Abstract: This paper describes the semi-synthesis and anti-microbial activity of novel pyrazoline derivatives of Polygonum senegalense chalcones. The study was carried out on the understanding that heterocycles with pyrazoline ring systems are known to possess a broad spectrum of biological activities. The derivatives were afforded by refluxing mixtures of chalcones and phenylhydrazine, hydrazine hydrate, and / or acetic acid in DMSO or ethanol at low temperatures between 40-60°C in an oil-bath. The products were characterized in by 1H-NMR (200 or 400 MHz), 13C-NMR spectroscopy and ESI-HRMS. NMR data was described in detail for each derivative. The compounds 6-15 have been screened for their in vitro anti-bacterial activity against one gram positive bacteria (S. aureus) and anti-fungal activity against five strains C. krusei, C. neoformans, and C. glabrata. They all showed insignificant antimicrobial activities with lower IC50 as compared to positive control, except compound 7 that demonstrated moderate antifungal activity with IC50 values ranging between 8.01 13.74 μg/mL against C. krusei, C. neoformans and C. glabrata. The compound also showed antibacterial activity of IC50 value 7.56μg/mL against S. aureus. Based on these findings, we recommend that compound 7 should undergo further structural modification in order to optimize its anti-microbial activity.

Hair-growing agent and scalp cosmetic

Abstract: PROBLEM TO BE SOLVED: To provide a hair-growing agent comprising extracts of Polygonum filiforme belonging to the genus of Polygonum of the family of Polygonaceae and a scalp cosmetic comprising the hair-growing agent SOLUTION: The hair-growing agent comprises extracts of Polygonum filiforme belonging to the genus of Polygonum of the family of Polygonaceae In a preferred embodiment, the hair-growing agent exhibits at least any one action selected from among a testosterone 5α-reductase-inhibiting action, an androgen receptor binding-inhibiting action and a hair papilla cell-proliferating action The scalp cosmetic comprises as effective ingredients the extracts of Polygonum filiforme COPYRIGHT: (C)2006,JPO&NCIPI

Effect of Polygonum Minus (Knotweed) Leaves Extract on the Histopathological Changes of Kidney in Mice (Mus Musculus) Induced by Mercuric Chloride

Abstract: This research was conducted to investigate the protective effect Polygonum minus leaves extract on the histopathological changes of kidney induced by mercuric chloride in mice ( Mus musculus ). Thirty male mice were divided into five groups and were administered via intragastric gavage with different treatments for 21 days. The treatment were C- (CMC Na 0.5% solution + aquadest), C+ (CMC Na 0.5% solution + 8 mg/kg bw of mercuric chloride), T1, T2, and T3 (200, 400, and 800 mg/kg bw of Polygonum minus leaves extract respectively + 8 mg/kg bw of mercuric chloride). The histopathological changes of kidney were examined by using Arshad Scoring method. Then the data was analysed using Kruskal Wallis and continued with Mann-Whitney test. The result showed Polygonum minus leaves extract could protect mice kidney from the damage effect of mercuric chloride. The best dose of Polygonum minus on this research was 400 mg/kg bw. Keywords : Polygonum minus , mercuric chloride, Mus musculus , kidney