Search results for "rodium"
showing 6 items of 6 documents
Ultrasonically-Assisted and Conventional Extraction from Erodium Glaucophyllum Roots Using Ethanol:Water Mixtures: Phenolic Characterization, Antioxi…
2020
The paper presents experimental results concerning the ultrasonically-assisted extraction of bioactive compounds from Erodium glaucophyllum roots. A comparison with conventional methodology is presented, and thereby the phytochemical composition and the antioxidant and anti-inflammatory activities of extracts are evaluated. The phenolic profile of Erodium extracts was analyzed by TOF&ndash
Effect of ultrasound technology combined with binary mixtures of ethanol and water on antibacterial and antiviral activities of Erodium glaucophyllum…
2019
Abstract Erodium glaucophyllum is a common Mediterranean herb known for its health benefits. In this study, Erodium extracts obtained from different extraction methods (conventional vs ultrasound-assisted extraction) and extraction solvents (aqueous and hydroethanolic) were evaluated in microbiological media to determine their effects on bacteria (Salmonella enterica, Staphylococcus aureus, Listeria innocua, Bifidobacterium lactis and Lactobacillus casei) and antiviral activity (hepatitis A virus and murine norovirus). Both, the extraction method and solvent were found to be important contributing factors. Ultrasound-assisted extraction yielded the highest level of desirable Erodium-extract…
Ethnopharmacology, phytochemistry and biological activity of Erodium species: a review
2019
Erodium spp. is a genus that can be found in all continents that has been traditionally used in folk medicine to treat many diseases such as hemorrhage, dermatological disorders, indigestion, and inflammatory diseases. Moreover, Erodium leaves have been used for the preparation of salads, omelets, sandwiches, sauces and soups, among other food products. The objective of this review was to show the recent and relevant studies about extraction of bioactive compounds, the phytochemical characterization, the potential biological activities and toxicological evidence reported in both in vitro and in vivo studies from Erodium spp. In addition, the use of Erodium spp. as natural compounds against …
Typification of the name Erodium soluntinum Tod. (Geraniaceae) and its taxonomic implications
2017
The present contribution is part of the ongoing work promoted by the Italian Botanical Society aimed at recognizing and typifying all the taxa described from Italy and their loci classici, in order to increase their systematic knowledge and promote further studies (Domina et al. 2012, Peruzzi et al. 2015, Brundu et al. 2017). One of these taxa is Erodium soluntinum Todaro (1869: 36), a species belonging to Geraniaceae and considered an Italian endemic (Conti et al. 2005, Peruzzi et al. 2014, 2015). This name, as far as we are aware, is not yet typified.
Hydroformylation of 1-Hexene over Rh/Nano-Oxide Catalysts
2013
The effect of nanostructured supports on the activity of Rh catalysts was studied by comparing the catalytic performance of nano- and bulk-oxide supported Rh/ZnO, Rh/SiO₂ and Rh/TiO₂ systems in 1-hexene hydroformylation. The highest activity with 100% total conversion and 96% yield of aldehydes was obtained with the Rh/nano-ZnO catalyst. The Rh/nano-ZnO catalyst was found to be more stable and active than the corresponding rhodium catalyst supported on bulk ZnO. The favorable morphology of Rh/nano-ZnO particles led to an increased metal content and an increased number of weak acid sites compared to the bulk ZnO supported catalysts. Both these factors favored the improved catalytic performan…
Formiaattimolekyylin dissosiaation määritys platina- ja rhodiumpinnoilla laskennallisesti
2017
Tutkielmassa käydään lyhyesti läpi laskennallisen kemian historiaa ja kuinka se on muodostanut suuren roolin tutkimuksissa. Lyhyt katsaus katalyysien historiaan tarjoaa lukijalle mahdollisuuden tarkastella kuinka nykypäivän teknologiaan on päästy, ja mistä kaikki alkoivat. Ilman katalyysiä ihmiskunta olisi edelleen hevosten päällä maaseudulla, joten on olennaista tietää millaisilla menetelmillä ja kuinka ihmiskunta on kehittynyt nykypäivän teknologiaan pohjautuvaan yhteiskuntaan. Historiallisen katsauksen ohella tutkielmassa perehdytään heterogeeniseen katalyysireaktioon, joista vesikaasun siirtoreaktio (WGS) on tarkastelun kohteena. WGS-reaktiota sovelletaan hyvin laajasti teollisissa pros…