Catálogo de publicaciones - revistas

<jats:p>Comparative study GC-FID/MS of essential oils of fruits, leaves and roots of the endemic plant Angelica panciciiVandas ex Velen. revealed a significant difference in their chemical composition. The enantiomeric purity of the main component in the fruit oil (+)-β-phellandrene was also confirmed. In addition, imperatorin, isoimperatorin, oxypeucedanin, oxypeucedanin hydrate, angeloylpangelin and umbelliprenin were isolated from the fruit hexane extract. The content of these coumarins in the hexane extracts from different plant parts was further determined by HPLC. The essential oils and hexane extracts were assessed for their antioxidant potential and inhibitory effect towards -amylase and acetylcholinesterase enzymes. The fruit and leaf essential oils (&gt; 80%) as well as the fruit hexane extract (&gt; 62%) significantly inhibited acetylcholinesterase enzyme. Distinguish free radical scavenging properties were detected for the leaf (Inh. 95.0 ± 2.2 %) and the root (Inh. 66.0 ± 2.4 %) extracts.</jats:p>

<jats:p>The aerial part of Aloysia gratissima(Gillies &amp; Hook. ex Hook.) Tronc., "Usillo", is used as aromatic and medicinal. It is a shrub of up to 3 meters, distributed in North America, from the south of the USA to the north of Mexico, and in South America up to the 37th parallel. As in other native species, the demand is covered by harvesting in wild populations, which brings about the deterioration of the resource and lack of homogeneity of the harvested product. The variability was characterized in nine populations of A. gratissimavar. gratissima from the northeast of San Luis, Argentina, based on morphological and phytochemical characters. It was found that the species in the region presents considerable heterogeneity. Diversity was detected in the chemical characteristics of the essential oils analyzed and the prevalence of mono and sesquiterpenes was related to the olfactory identities identified. The main components were the sesquiterpene spatulenol and the monoterpene 1,8 cineole.</jats:p>

<jats:p>Aromatic and medicinal plants are of great importance to determine the contents of the active compounds of plant origin and to evaluate them depending on variety and climate factors in order to determine the phenolic, antioxidant enzyme activity, vitamin contents in species belonging to the Lamiaceae family. Examination of the characteristics of different species, the highest peroxidase (POD) enzyme activity, ascorbate peroxidase (AxPOD), total antioxidant (TA), malondialdehyte (MDA), caffeic acids (CA), vitamin C contents,and chloric acid (ChA) were obtained in the M. longifoliaspecies. The highest vitamin E and catalase (CAT) were determined in the S. hortensisspecies but the highest total phenolic (TP), superoxide dismutase (SOD) enzyme, hydrogen peroxide (H2O2) and chlorogenic acid (ChgA) were determined in the S. spicigeraspecies. As a result of PCA analysis, it can be said that Mentha longifolia(L.) Hudson and Satureja spicigeraspecies have significant value in terms of biochemical and phenolic content.</jats:p>

<jats:p>This article describes the chemical composition, physical properties and acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) activity of stem-distilled essential oil (EO) from Bursera graveolenswood chips, Burseraceae. The plant material was acquired in Quimis (Bosque de Sancán), city of Jipijapa in the province of Manabí, coastal region of Ecuador. Thirty-six components were identified by CG-MS, which represented 98.54% of the volatile oil. The main components were limonene (68.52%) and mentofuran (20.37%). The hydrocarbon monoterpenes constituted the most abundant fractions. The average yield of the EOwas 1.26%. Regarding the physical properties of EO, the following values were obtained: relative density (1,029 g/mL), refractive index (1,477) and specific rotation (+4,567). The EOpresented IC50inhibition values of 47.2 and 51.9 μg/mL for the enzymes AChE and BuChE, respectively.</jats:p>

<jats:p>The aim of this study was to evaluate the functional interaction of Glycyrrhiza glabraroot extract (GGRE) on the large conductance Ca2+-activated K+(BKCa) channels expressed in the peripheral nervous system by using nociception and inflammation models in rodents in vivo. Besides toxicity studies and open field tests, nociception and inflammation tests were performed on rodents. Different doses of GGRE were given orally to rats and mice. Naloxone, indomethacin, morphine, NS1619 and iberiotoxin (IbTX) were administered. GGRE had both anti-nociceptive and anti-inflammatory activity in rats and mice. GGRE exhibited an analgesic effect by decreasing the time-course of the pain threshold or reaction time insome nociceptive tests. Furthermore, GGRE reduced level of pro-inflammatory cytokines, including TNF-α and IL-1β. As a conclusion, GGRE can alleviate the pain sensation of the afferent nerves and can reduce inflammation and associated pain by activating BKCa channels and reducing the levels of TNF-α, IL1β.</jats:p>

<jats:p>The present study showed medicinal plants and their popular use in the rural settlement Boa Esperança, in Piracanjuba, GO, Brazil. Data were collected from November 2017 to February 2018. A total of 176 species (mostly native) were sampled with the predominance of use to treat respiratory, gastrointestinal problems, kidney stones and various types of infections. The species with the highest number of informations were Dilodendron bipinnatumRadlk.; Morussp.; Pterodon emarginatusVogel; Qualea grandifloraMart. andCochlospermum regium(Mart. ex Schrank) Pilg. With the exception of C. regium, the others species had the maximum use agreement value. The study showed a high richness of species used by settlers. The dissemination of this knowledge of medicinal plants, with an emphasis on native plants, can assist in strengthening the cultural knowledge ofthe local community, encouraging the environmental conservation of various medicinal species used in the region.</jats:p>

<jats:p>Lippia integrifolia"incayuyo" is an aromatic, sub-woody shrub used in popular medicine, aperitit drinks and compound herbs. Its choleretic, antispasmodic, biocidal, antibacterial and larvicidal activity has been proven. The objective of the work was to register the phenology of a sample of 70 genotypes from a population with a broad genetic base. The phenophases studied were: vegetative growth, flower bud, flowering and fruiting fortnightly for two years. The initiation, intensity and prolongation of the phenophases were evaluated. The moment of full bloom occurs during the second half of December. Taking this date as a reference, a differentiated beginning of flowering was evidenced. The results of two campaigns were compared, observing that 70% of the specimens had a similar behavor, standing out some genotypes for presenting an early flowering and longer duration. The recorded variability suggests that much of it could be due to intrinsic factors of the plant, and therefore, feasible to be selected.</jats:p>

<jats:p>The nomadic behavior of Roma people has allowed their cultural interaction with peoplefrom different continents. Brazil has received Roma immigrants since its colonization, and there are currently more than 800,000 Roma people among the Brazilian population. This article describes the ethnobotanical knowledge of two Calon families (Alves and Dantas) established in hinterland cities of Pernambuco, northeastern Brazil. The survey was conducted with 23 informants (≥ 40 years old, 85% of the target audience) selected through the snowball technique and using semi-structured interviews. The plants mentioned were collected, identified and deposited in the IPA and UFP herbaria. The 157 species (85 native) are used for food, condiment, cosmetic, medicinal, ritualistic, technological, veterinary, and other purposes. The useful flora and forms of use are similar to those reported by non-Roma communities living in the same region, showing a kind of mimicry adopted by the Roma people, yet maintaining their cultural identity.</jats:p>

<jats:p>Yerba mate (Ilex paraguariensis) produces several secondary metabolites of interest to the pharmaceutical industry, such as chlorogenic acids and methylxanthines. These compounds have been produced in vitro by callus culture from different species. However, for I. paraguariensis, no studies upon the production of these compounds in vitro have been performed to date. In this work, we show that the concentration of secondary metabolites from I. paraguariensis callus is possible and highly dependent on the callus growth phase. We observed that the best phase for the production of secondary compounds in calli of yerba mate is the stationary growth phase on both genotypes tested. In this phase, higher levels of phenolic compounds, chlorogenic acid and 3,5-dicaffeoylquinic acid and greater antioxidant activity were observed. Chlorogenic acid and 3,5-dicaffeoylquinic acid presented positive correlation with antioxidant activity. For the first time, secondary compounds were reported in yerba mate calli cultivated in vitro.</jats:p>