scholarly journals Una mirada desde la sociologia de las ausencias y emergencias a la produccion y comercio de pimenta dioica En Zozocolco, Veracruz, México / Looking the production and trade of pimenta dioica in Zozocolco, Veracruz, Mexico since the sociology of absences and emergencies

2021 ◽  
Vol 7 (12) ◽  
pp. 116170-116190
Author(s):  
Martha N. Acosta Quijano ◽  
Laura E. Trujillo Ortega ◽  
Carlos Guadarrama Zugasti ◽  
César A. Ramírez Miranda ◽  
Bianca A. Lima Costa
Keyword(s):  
2021 ◽  
Author(s):  
Fadia S. Youssef ◽  
Rola Labib ◽  
A. Gad Haidy ◽  
Safaa Eid ◽  
Mohamed Lotfy Ashour ◽  
...  

Volatile constituents isolated from stems (S) and leaves (L) of Pimenta dioica (PD) and Pimenta racemosa (PR) during the four seasons were analyzed using GLC/FID (Gas liquid chromatography – flame...


2016 ◽  
Vol 139 ◽  
pp. 67-73 ◽  
Author(s):  
C.M. Senthil Kumar ◽  
T.K. Jacob ◽  
S. Devasahayam ◽  
Sharon D’Silva ◽  
P.G. Nandeesh

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Akshay Rajeev Geetha ◽  
Elizabeth George ◽  
Akshay Srinivasan ◽  
Jameel Shaik

Production of silver nanoparticles from the leaf extracts ofPimenta dioicais reported for the first time in this paper. Three different sets of leaves were utilized for the synthesis of nanoparticles—fresh, hot-air oven dried, and sun-dried. These nanoparticles were characterized using UV-Vis spectroscopy and AFM. The results were diverse in that different sizes were seen for different leaf conditions. Nanoparticles synthesized using sun-dried leaves (produced using a particular ratio (1 : 0.5) of the leaf extract sample and silver nitrate (1 mM), resp.) possessed the smallest sizes. We believe that further optimization of the current green-synthesis method would help in the production of monodispersed silver nanoparticles having great potential in treating several diseases.


Author(s):  
Matheus Vasconcelos Batalha ◽  
Thércia Gabrielle Teixeira Martins ◽  
Gustavo Oliveira Everton ◽  
Victor Elias Mouchrek Filho
Keyword(s):  

Author(s):  
Surya P H ◽  
Elyas K K ◽  
Deepti Madayi

Objective: The current investigation involves the purification, characterization of the lectin from the leaves of Pimenta dioica (L.) Merr. (Myrtaceae) a medicinal plant, and its application in bacterial typing.Methods: A lectin was purified from the leaves by cation exchange chromatography. SDS PAGE revealed the molecular weight of the purified lectin. Biochemical characterization was carried out by performing various tests. Hemagglutination inhibition was conducted to detect the sugar specificity. Additionally, bacterial agglutination was performed to predict whether the purified lectin was able to agglutinate the bacterial strains.Results: SDS PAGE analysis revealed the lectin to be a tetramer in the range of 43-66 kDa. The purified lectin agglutinated human, avian, and mouse erythrocytes, and was inhibited by 125 mmol of mannose and xylose. The lectin was stable at 0-60 ° C for 30 min and was unaffected by either 2-Mercaptoethanol (2-ME) or Dithiothreitol (DTT) (50-250µM). A pH of 6.0–8.0 was found optimum for its activity and was nearly independent of metal ions. The purified lectin contained about 20% carbohydrate as estimated by Anthrone method. Purified lectin agglutinated the Gram-negative Escherichia coli and Proteus vulgaris.Conclusion: The isolated lectin was found to possess significant hemagglutinating activity. Due to its ability to agglutinate Gram negative bacteria such as Escherichia coli and Proteus vulgaris, it could be used for bacterial typing and for the design of bacterial filters.


2007 ◽  
Vol 2 (9) ◽  
pp. 1934578X0700200
Author(s):  
Fatma A. Moharram ◽  
Mona A Mohamed ◽  
Mohamed SA Marzouk ◽  
Elsayed A Aboutabl

The defatted and desalted 80% methanolic extract of the leaves of Pimenta dioica (Mirr.) L. resulted in the isolation of three triterpenoid saponins, 23-hydroxy-3α-[( O-α-L-rhamnopyranosyl-(1→2)- O-α-L-arabinopyranosyl) oxy] olean-12-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)- O-β-D-galactopyranosyl-(1→6)- O-β-D-galactopyranosyl ester (1), 2α,3α,23-trihydroxyolean-12-en-28-oic acid O-β-D-glucopyranosyl ester (2), and 2α,3α,23-trihydroxyolean-13(18)-en-28-oic acid O-β-D-glucopyranosyl ester (3), along with a novel dihydrokaempferol glucoside, namely, 3-carboxy-6,8-di- C-methyl-dihydrokaempferol 3- O-β-D-glucopyranoside (4), together with three known flavonoids, quercetin 3- O-β-D-glucuronopyranoside (5), quercitrin (6) and mernesitin (7), all for the first time from the genus Pimenta. The structures were identified on the basis of chemical and physicochemical analysis (UV, HRESI-MS, 1 and 2D NMR).


Author(s):  
Akhilesh Bhat ◽  
Raveesha K. A.

<p><strong>Objective</strong>:<strong> </strong>To assess the antifungal activities of the extracts of leaves of <em>Pimenta dioica</em> against human pathogenic fungi and identify the class of phytochemical responsible for the biological activity.</p><p><strong>Methods</strong>:<strong> </strong>The shade dried, and powdered leaves of <em>Pimenta dioica</em> were subjected to polarity based solvent extraction by soaking. The extracts were dried in a rotary flash evaporator and subjected to antifungal activity assay against <em>Candida albicans</em>, <em>Microsporum canis </em>and<em> M. gypseum</em>, by disc diffusion method. Antifungal active petroleum ether extract was subjected to phytochemical analysis to identify the active compound. The extract was then subjected to Thin Layer Chromatography (TLC) and Bioautography, by agar overlay method. The fractions were collected by Preparative TLC method and subjected to antifungal activity assay by disc diffusion method. Further, the Libermann-Burchard test was conducted to detect the broad group of compounds responsible for the bioactivity.</p><p><strong>Results</strong>:<strong> </strong>Among the five extracts viz. petroleum ether, chloroform, ethyl acetate, methanol and aqueous, the petroleum ether extract showed significant antifungal activity against <em>Microsporum canis</em> (50 mm), <em>Microsporum gypseum</em> (60 mm) and <em>Candida albicans</em> (23 mm). Terpenoids, tannins and flavonoids were found to be the chief constituents of the petroleum ether extract. The TLC of the extract revealed 7 spots with the Rf values 0.37, 0.42, 0.45, 0.52, 0.59, 0.76, 0.96 with the solvent system of hexane and acetone (1:0.5). The bioautography assay revealed inhibitory activity in the spots at Rf values 0.52 and 0.59. These fractions obtained by preparative TLC also confirmed the same. The phytochemical analysis of the fractions on the TLC plate suggests that the compound is triterpene or steroid.</p><p><strong>Conclusion</strong>:<strong> </strong>The antifungal activity of <em>Pimenta dioica</em> and the bioactive phytochemical has been reported in the present study. Preliminary phytochemical analysis has indicated that the compounds are triterpenes or steroids. The results indicate that the active compounds are potential lead molecules for new antifungal drugs in the management of infectious fungi.</p>


2015 ◽  
Vol 55 (1) ◽  
pp. 110-116 ◽  
Author(s):  
Małgorzata Kłyś ◽  
Anna Przystupińska

Abstract The aim of this study was to investigate whether powdered plants of different species namely: peppermint Mentha piperita (L.) (Lamiaceae), wormwood Artemisia absinthium (L.) (Asteraceae), common sage Salvia officinalis (L.) (Lamiaceae), allspice Pimenta dioica (Linnaeus et Merrill) (Myrtaceae) and common garlic Allium sativum (L.) (Amaryllidaceae), added to semolina using concentrations of 1.23, 3.61, and 5.88%, influence the mortality rate in the saw-toothed grain beetle Oryzaephilus surinamensis Linnaeus, 1758 (Coleoptera: Silvanidae). Experiments were conducted in a laboratory at 28°C and relative humidity 60±5%. At the concentration of 1.23%, allspice seeds caused the highest mortality amongst the saw-toothed grain beetle. When concentrations of 3.61 and 5.88% were used, sage, peppermint and wormwood caused the highest statistically significant mortality of O. surinamensis


2014 ◽  
Vol 8 (38) ◽  
pp. 1134-1147
Author(s):  
Rodrigues Faria Leonardo ◽  
Henrique Pimenta Pedro ◽  
de Almeida Ribeiro Oliveira Leandra ◽  
de Castro Peixoto Josana ◽  
Henrique Ferri Pedro ◽  
...  

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