scholarly journals Influence of the aqueous extract of Tamarix articulata Vahl. leaves on some vegetative growth indicators and medically active substances of Cordia myxa L. Seedlings c.v. Local.

2019 ◽  
Vol 1294 ◽  
pp. 092038
Author(s):  
Manal Zbari Al–Mayahi ◽  
Murtadha Hussein Fayadh
1988 ◽  
Vol 66 (6) ◽  
pp. 820-825 ◽  
Author(s):  
Marian E. Addy ◽  
John F. Burka

Three fractions (n-butanol, F2, and L5), isolated from an aqueous extract of Desmodium adscendens, a plant used in Ghana for the management of asthma, were evaluated for their pharmacological activity using ovalbumin and arachidonic acid-induced contractions of guinea pig airways. All three fractions inhibited the ovalbumin-induced contractions of indomethacin-pretreated tracheal spirals from sensitized animals dose dependently, but only L5 and n-butanol inhibited such contractions in the absence of indomethacin. The concentrations required to inhibit ovalbumin-induced contractions of lung parenchymal strips were threefold higher than with trachea. The contractile response over a 60-min period was divided into three phases. F2 and n-butanol inhibited all phases, whereas L5 inhibited only the late phase. n-Butanol and L5 inhibited arachidonic acid-induced contractions on indomethacin-pretreated tracheal spirals, a leukotriene-dependent reaction. There was no inhibition of arachidonic acid-induced contractions of lung parenchymal strips, which is largely a thromboxane-dependent reaction. The results suggest that D. adscendens contains several pharmacologically active substances that can inhibit allergic airway smooth muscle contraction at multiple sites, including the synthesis and (or) activity of the bronchoconstrictor leukotrienes.


2005 ◽  
Vol 50 (2) ◽  
pp. 173-182
Author(s):  
S. Rakic ◽  
Dragan Povrenovic ◽  
Radojka Maletic ◽  
M. Zivkovic

The results of the chemical investigations of variously treated acorn samples are presented in this paper with the aim of obtaining data on the amount of nutritious components and biologically active substances. The Quercus robur acorn, which belongs to the Fagaceae family, was investigated in a raw, thermally treated form and as an extract that was subsequently dried in a dryer with a fluidized bed. The obtained results regarding the content of tannin, nitrogen containing compounds, macro- and microelements indicate that acorn maintains its functional characteristics after the investigated treatments.


2019 ◽  
pp. 129-134
Author(s):  
Sitara Jalal Mustafayeva ◽  
Sirajeddin Veli Serkerov ◽  
Konul Farrux Bakhshaliyeva

The qualitative and quantitative composition of chemical components of ethanol extract of the above-ground part of Anthemis altissima L. (syn. Cota altissima (L.) J.Gay) species (family Asteraceae) collected during flowering phase from the flora of Azerbaijan has been studied. The chemical composition of ethanol extract was analyzed by chromatography-mass-spectrometry methods. 54 components were identified in the extract. As a result of the study, it was found that the A. altissima contained benzene aromatic compounds (77.21%). Among them Benzene, (1-butylheptyl) – 7.84%, Benzene, (1-propyloctyl) – 7.71%, Benzene, (1-pentyloctyl) – 7.03%, Benzene, (1-pentylheptyl) – 5.69%, Benzene, (1-butyloctyl) – 5.37%, Benzene, (1-propylnonyl) – 5.02% were the main components.  In addition to the above components in the extract of the aerial part other biological active substances, such as alcohols (6.37% – of them prevail Hop-22(29)-en-3. β.-ol – 1.53%, γ-Sitosterol – 1.32%), esters of acids (5.3% – of them prevail Hexadecanoic acid, ethyl ester – 0.88%; Linoleic acid, ethyl ester – 0.63%) and alkanes (1.64% – of them prevail Eicosane – 0.53%; Pentacosane – 0.40%) were also identified. The share of unidentified components was 8.99%. The article also presents the results of the study of the antifungal properties of A. altissima and its aqueous extract against the culture of pathogenic fungi Fusarium oxysporium and Aspergillus niger. The aqueous extract of A. altissima, in contrast to the plant itself, shows a fungistatic effect on the fungi Fusarium oxysporum and Aspergillus niger.


2020 ◽  
Vol 13 (6) ◽  
pp. 120 ◽  
Author(s):  
Marisa Nicolai ◽  
Joana Mota ◽  
Ana S. Fernandes ◽  
Filipe Pereira ◽  
Paula Pereira ◽  
...  

Plectranthus ecklonii Benth. has widespread ethnobotanical use in African folk medicine for its medicinal properties in skin conditions. In this study, two different basic formulations containing P. ecklonii extracts were prepared, one in an organic solvent and the other using water. The aqueous extract only contained rosmarinic acid (RA) at 2.02 mM, and the organic extract contained RA and parvifloron D at 0.29 and 3.13 mM, respectively. RA in aqueous solution permeated skin; however, in P. ecklonii organic extract, this was not detected. Thus, P. ecklonii aqueous extract was further studied and combined with benzophenone-4, which elevated the sun protection factor (SPF) by 19.49%. No significant cytotoxic effects were observed from the aqueous extract. The Staphylococcus epidermidis strain was used to determine a minimum inhibitory concentration (MIC) value of 10 µg·mL−1. The aqueous extract inhibited the activity of acetylcholinesterase by 59.14 ± 4.97%, and the IC50 value was 12.9 µg·mL−1. The association of the P. ecklonii extract with a UV filter substantially elevated its SPF efficacy. Following the multiple bioactivities of the extract and its active substances, a finished product could be claimed as a multifunctional cosmeceutical with broad skin valuable effects, from UV protection to antiaging action.


2018 ◽  
Vol 7 (4.37) ◽  
pp. 145
Author(s):  
Mohammed Nazar Hasan ◽  
. .

This study includes the effect of spraying boron and seaweed extracts kelpak in the vegetative growth characteristics and concentration of some medically active substances for lemongrass plant. The experiment used a randomized complete block design with three replications. The Medians treatments have compared using Duncan’s test with multi limits at 5% possibility. The results arrived at can be summed up as follows. Discriminate treatment (B1K1) the highest rate of number of leaves (9.61 leave/plant) and the highest rate in plant height (134.14 cm), compared with comparison transaction ( B0K0 ) it gave the lowest rate for the number of  leaves  and  less  height  of  the plants. While the  treatment  giving  overlap (B2K2) the  highest  moral value  Percentage  of  dry matter for total vegetative  (24.00)  and the  highest  rate  of  percentage of dry matter for total root (33.00) and  the  highest  rate  of  leaves area  (168.08 cm2/leave) and the  highest  total chlorophyll concentration (35.18 SPAD) Compared with the  least in comparison transaction ( B0K0 ) that  gave less rate in percentage of dry matter for total vegetative and root and the  less total chlorophyll concentration. Influenced treatment (B1K1) in the concentrations of the activeA substances to give it the highest concentrations of  Myrcene (3.47 mg/gm) and Citral (28.01 mg/gm) and Limonene (42.72 mg/gm) and Geraniol (38.42 mg/gm) compared  to the  rest of the  other transactions, while the lower concentrations of these in the treatment comparison ( B0K0).  


1992 ◽  
Vol 84 (2) ◽  
pp. 217-222 ◽  
Author(s):  
Laurence S. Shore ◽  
Yoram Kapulnik ◽  
Bruria Ben-Dor ◽  
Yechezkial Fridman ◽  
Smadar Wininger ◽  
...  

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