The Genus Vismia: Geographical Distribution, Chemical Composition and Recent Biological Studies Janne Rojas and Alexis Buitrago

Ethnobotany ◽  
2018 ◽  
pp. 111-141
2020 ◽  
Vol 2 (3) ◽  
pp. 89-95
Author(s):  
Mikhail Gonharov ◽  
Gennady Pavlovich Yakovlev

The article gives an overview of the small and archaic tribe Baphieae (Fabaceae, Fabales). The study is devoted to the taxonomic revision of the Baphieae tribe and and the phylogenetic relationships within the group based on the morphological, anatomical, palynological and molecular characteristics. It was carried out on the basis of studying about 5,000 herbarium leaves in 12 European and African botanical institutions. The study was performed using the morphological-geographical and molecular-phylogenetic analysis methods. The article provides information on the morphological features of the species included in the tribe, their geographical distribution and chemical composition. The results of phylogenetic analysis have been presented. According to it, it can be argued that the tribe Baphieae is a monophyletic group occupying a relatively isolated position among the subfamily of moths, based on morphological and molecular characteristics. The proposals for a new structure of the tribe have been made. The identification of several phylogenetic lineages within the tribe and the basal position of the genus Dalhousiea have been substantiated. Further studies have been identified.


2017 ◽  
Vol 14 (10) ◽  
pp. e1700234 ◽  
Author(s):  
Afifa Zardi-Bergaoui ◽  
Aymen Ben Nejma ◽  
Fethia Harzallah-Skhiri ◽  
Guido Flamini ◽  
Roberta Ascrizzi ◽  
...  

2014 ◽  
Vol 8 (1) ◽  
Author(s):  
Muhammad Imran ◽  
Nasir Rasool ◽  
Komal Rizwan ◽  
Muhammad Zubair ◽  
Muhammad Riaz ◽  
...  

OCL ◽  
2019 ◽  
Vol 26 ◽  
pp. 28 ◽  
Author(s):  
Muna Hayder Abdelrahman ◽  
Reem Osama Hussain ◽  
Dhulfiqar Sami Shaheed ◽  
Majed AbuKhader ◽  
Shah Alam Khan

Olive oil isolated from the fruits of the Olea europaea L. is an important part of Mediterranean diet. It is known for its diverse biological actions. Furthermore, a little amount of fixed oil and other bioactive components can also be extracted from the olive seeds which are considered as byproduct of olive oil extraction. Therefore, this study was designed to analyze the fatty acid composition and to perform in vitro biological studies on fixed oil isolated from olive seeds. The fixed oil was isolated from the olive seeds of Syrian and Greek black olive fruits by using Soxhlet apparatus. The purity was checked by measuring its refractive index. Composition of two isolated oils and a commercially available virgin olive oil was determined by preparing their Methyl esters (FAME) followed by GC-MS analysis. Various in vitro assay methods were used to investigate activities such as antioxidant activity by 1,1-diphenyl-2-picrylhydrazyl (DPPH), cytotoxic activity by using Brine shrimps lethality bioassay and antimicrobial activity against two bacterial strains; Staphylococcus aureus and Escherichia coli by agar well diffusion method. GC-MS analysis revealed that the two isolated oils differ quantitatively in chemical composition with oleic acid identified as the major chemical constituent (62.6% and 73.56%). Both the fixed seed oils showed a concentration dependent DPPH radical scavenging activity ranging from 8 to 76% inhibition. The oils also exhibited excellent cytotoxic activity but no antimicrobial activity was observed. The chemical composition of the isolated fixed olive seed oil is found to be almost similar to the commercially available fruit olive oil. The fixed oil from the seeds of olive fruits possesses useful biological actions. Further studies are needed to isolate and quantify their bioactive constituents.


2005 ◽  
Vol 2 (1) ◽  
pp. 29-32 ◽  
Author(s):  
Vassya Bankova

The newest developments in propolis pharmacological research are summarized. The problem regarding biological studies, caused by the chemical variability of propolis, is discussed. The most important trends and developments in recent propolis research are outlined: biological studies performed with chemically characterized samples, bioassay-guided studies of active principles and comparative biological studies of propolis of different origin and chemical composition. These types of studies are extremely valuable with respect to propolis standardization and practical applications in therapy. They will allow scientists to connect a particular chemical propolis type to a specific type of biological activity and formulate recommendations for practitioners.


1981 ◽  
Vol 32 (3) ◽  
pp. 335 ◽  
Author(s):  
BA Schaefer ◽  
M Kecskemeti

The chemical composition of 26 mineral springs in the Daylesford district of Victoria was determined at regular intervals over about 2 years, and the possible equilibria examined. All the springs have a similar composition, but a common reservoir is doubtful. A similar mechanism for the origin of the waters appears to operate throughout the region. For the springs on a line approximately east-west and about 1 km north of the Dividing Range, the water compositions are those expected for an equilibrium between kaolinite and montmorillonite (Ca and Na). To the north of this line the composition is appropriate to water in equilibrium with montmorillonite, while to the south the water composition relates to kaolinite. The geographical distribution of the composition shows a rough relationship to the rainfall, with the higher rainfall associated with the equilibrium line. An equilibrium with K = [Na+]/[K+] = 50 appears to be generally established in the district and may involve the potassium and sodium feldspars. The concentration of CO2 is about 14% in excess of the calculated equilibrium value for the existing conditions of pH, HCO3- and temperature. Evidence is given confirming that the probable source of the CO2 lies in the vicinity of Babbington's Hill. It is suggested that the main source of the cations in solution is the basalt rather than the altered sediments of the region.


Soil Research ◽  
1987 ◽  
Vol 25 (4) ◽  
pp. 337 ◽  
Author(s):  
BG Williams ◽  
JK Ward ◽  
L Belbin

Numerical classification techniques were used to examine the chemical composition of 169 shallow groundwater samples in relation to their geographical distribution within the Murrumbidgee Irrigation Area. The ionic proportions are very similar throughout the whole area, but the total soluble salt concentrations are very variable. The classification was more coherent when primary variables were used rather than derived variables such as Saturation Indices.


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