Effect of the interaction between transplants of the epiphytic lichen Pseudevernia furfuracea L. (Zopf) and rainfall on the variation of element concentrations associated with the water-soluble part of atmospheric depositions

2017 ◽  
Vol 8 (5) ◽  
pp. 912-920 ◽  
Author(s):  
Luana Gallo ◽  
Anna Corapi ◽  
Carmine Apollaro ◽  
Giovanni Vespasiano ◽  
Lucio Lucadamo
Keyword(s):  
Water Soluble ◽  
Epiphytic Lichen ◽  
Pseudevernia Furfuracea ◽  
Element Concentrations ◽  
Atmospheric Depositions ◽  
Soluble Part

Verbascum sinaiticum: A Rich Source of Antioxidant Phenylethanoid Glycosides

2020 ◽  
Vol 10 (2) ◽  
pp. 158-162 ◽  
Author(s):  
Humaira Yasmeen Gondal ◽  
Roshan Zamir ◽  
Muhammad Nisar ◽  
Muhammad Iqbal Choudhary
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Aerial Part ◽  
Methanolic Extract ◽  
Water Soluble ◽  
Antioxidant Potential ◽  
Active Fraction ◽  
Phenylethanoid Glycosides ◽  
Active Constituents ◽  
Soluble Part

Background: The genus Verbascum is well documented for its antioxidant potential but Verbascum sinaiticum is comparatively less studied plant. The current study was carried out to search for antioxidant nutraceuticals from this species. Objective: To explore the antioxidant potential of Verbascum sinaiticum and to identify its active constituents. Methods: The methanolic extract of air-dried aerial part of the Verbascum sinaiticum was partitioned with hexane, chloroform and ethyl acetate. The water-soluble part of ethyl acetate afforded six phenylethanoid glycosides by repeated chromatography over Sephadex LH-20, silica gel and ODS columns. Antioxidant activity of solvent extracts and isolated constituents were evaluated by DPPH, ABTS and FRAP assays. Results: Six phenylethanoid glycosides was isolated and characterized as Verbascoside, Eukovoside, Martynoside, Jionoside D, Campneoside I and Campneoside II, from the most active fraction. Conclusion: Verbascum sinaiticum demonstrated prospective antioxidant activity. The watersoluble part of EtOAc (WSEAE) was found the most active extract whereas Verbascoside was identified as the most potent constituent. All isolated compounds exhibited significant antioxidant activity whereas their synergistic effect was found prominent in the parent fraction.

Depolymerization of Straw Lignin by Manganese Peroxidase from Nematoloma frowardii is Accompanied by Release of Carbon Dioxide

Holzforschung ◽  
1999 ◽  
Vol 53 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Martin Hofrichter ◽  
Katrin Scheibner ◽  
Friedemann Bublitz ◽  
Ivonne Schneegaß ◽  
Dirk Ziegenhagen ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Manganese Peroxidase ◽  
Gel Permeation Chromatography ◽  
Water Soluble ◽  
White Rot ◽  
White Rot Fungus ◽  
Lignin Fraction ◽  
Molecular Masses ◽  
Total Lignin ◽  
Soluble Part

SummaryManganese peroxidase preparations (MnP) from the white-rot fungusNematoloma frowardiiwere able to release14CO2directly from14C-labeled milled wheat straw (MWS; total lignin fraction) and milled straw lignin (MSL; dioxane soluble part of MWS). Apart from the formation of14CO2(4–10 %) the treatment of insoluble MWS and MSL with MnP resulted in the formation of water-soluble14C-lignin fragments (lignin solubilization, 14–25%). Analyses with gel permeation chromatography (GPC) demonstrated the formation of lignin fragments with predominant molecular masses around 1 kDa. The extent of MWS mineralization and solubilization was enhanced in the presence of reduced glutathione (GSH) acting as thiol mediator, whereas MSL mineralization was not stimulated by GSH. The principle of direct extracellular mineralization of lignin catalyzed by the MnP system may make a significant contribution to the formation of carbon dioxide in lignincellulose containing habitats.

Trace-element concentrations and water-soluble ions in size-segregated dust-borne and soil samples in Sistan, southeast Iran

2017 ◽  
Vol 25 ◽  
pp. 87-105 ◽  
Author(s):  
Reza Dahmardeh Behrooz ◽  
Abbas Esmaili-Sari ◽  
Nader Bahramifar ◽  
D.G. Kaskaoutis ◽  
Keivan Saeb ◽  
...  
Keyword(s):  
Trace Element ◽  
Soil Samples ◽  
Water Soluble ◽  
Element Concentrations ◽  
Soluble Ions ◽  
Water Soluble Ions

Water-soluble part of the aerosol in the dust storm season—evidence of the mixing between mineral and pollution aerosols

2005 ◽  
Vol 39 (37) ◽  
pp. 7020-7029 ◽  
Author(s):  
Ying Wang ◽  
Guoshun Zhuang ◽  
Yele Sun ◽  
Zhisheng An
Keyword(s):  
Dust Storm ◽  
Water Soluble ◽  
Soluble Part

Solution properties of targacanthin (water-soluble part of gum tragacanth exudate from Astragalus gossypinus)

2006 ◽  
Vol 38 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Mohammad Amin Mohammadifar ◽  
Seyed Mohammad Musavi ◽  
Amir Kiumarsi ◽  
Peter A. Williams
Keyword(s):  
Water Soluble ◽  
Solution Properties ◽  
Gum Tragacanth ◽  
Soluble Part

scholarly journals Atmospheric significance of aeolian salts in the sandy deserts of northwestern China

2015 ◽  
Vol 7 (4) ◽  
pp. 3409-3440
Author(s):  
B.-Q. Zhu
Keyword(s):  
Chemical Species ◽  
Water Soluble ◽  
Northwestern China ◽  
Middle Latitudes ◽  
Atmospheric Depositions ◽  
Aeolian Deposits ◽  
Aeolian Sediments ◽  
Geological Conditions ◽  
Desert Areas ◽  
Closed Systems

Abstract. Large sandy deserts in the middle latitudes of northwestern China were investigated for soluble salt variations in modern and ancient aeolian sediments, aiming to explore the environmental significance of "aeolian salts". Results revealed that aeolian salt variations have a clear relationship with the changing meridional and zonal gradients of the desert locations and the aeolian differentiation effect, but are weakly linked to local geological conditions. It suggests that the natural system of aeolian salts is hydrologically open and the chemistry of the parent brines are different from that predicted for hydrologically closed systems. Atmospheric depositions of water-soluble chemical species are an important process/source contributing to aeolian salt. Sequential variations of soluble salts in sedimentary profiles interbedded with aeolian and non-aeolian deposits and their palaeoenvironmental implications in the hinterland areas of these deserts were further evaluated, based on the constraints of OSL dating and radiocarbon dating data. The results indicate that the inorganic salts may be a latent geoproxy in revealing regional palaeoclimatic changes in desert areas for the sediments deposited under onefold depositional environment, but the interpretation should be more careful for the sediments deposited under diverse depositional conditions. This study presents the evidence of atmospheric origin of aeolian salt in sandy deserts, with limited climatic significance in palaeoenvironmental reconstruction.

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