Effect of pollutants on the volatile oil of Mentha piperita L leaves and cardiac glycosides of Digitalis lanata EHRH leaves

The percentage yields of volatile oil of Mentha piperita L. leaves in the control samples and samples exposed to some air pollutants were determined. This percentage decreased in plants exposed to lead, cement and limestone dust pollution, while it increased in case of sulfate pollution after the first week. Hydrochloric acid pollution gave a mild increasing effect. Lead, sulfate, cement and limestone pollution showed a great decrease in menthone concentration and an increase in the percentage of menthol and menthofuran concentrations. Hydrochloric acid pollution showed a mild decrease in menthone, an increase in menthol and no increase in menthofuran. M-hydroxy coumaric acid was isolated from polluted samples of M. piperita L. leaves and its structure was elucidated by means of mass spectroscopy and high resolution 1H-NMR

Macro and micromorphology of the root, stem and leaf of centaur scoparia sieb. growing in Egypt

The macro-and micromorphology of the root, stem and leaf of Centaurea scoparia Sieb. are presented with view of finding out the diagnostic characters for the identification of these organs in both the entire and powdered forms

Certain pharmacological studies on the underground parts of cynanchum acutum L

In this investigation antimicrobial, antitumour, antipyretic and anti-inflammatory activities of alcoholic and chloroformic extracts of underground parts of Cynanchum acutum L. plant were studied. The alcoholic and chloroformic extracts of the tested plant in a concentration of 5% inhibited the growth of Escherichia coli, salmonella typhi and brucella abortus. Both extracts in concentrations of 20 and 10% respectively inhibited the growth of streptococcus pyogenes. Trichophyton gate penicillium notatum showed sensitivity to both extracts in a concentration of 10% microsporum canis and aspergillus niger were affected only by alcoholic extract of the plant at a oncentation of 5%. The tested extracts were active against Ehrlich ascites carcinoma in vitro. Both extracts had no antipyretic activity whereas they had anti-inflammatory effect on formalin induced inflammation

Preliminary investigations on some pharmacodynamic actions of cynanchum acutum L.

Profile of some pharmacological actions of alcoholic and chloroformic extracts of the underground organs of Cynanchum acutum L. were experimentally investigated. The alcoholic and chloroformic extracts of the tested plant were non toxic [LD50 3900 and 3450 mg/kg b. wt., respectively]. Both extracts inhibited the spontaneous contractions of smooth muscles of isolated rabbits intestine and rats uterus. They produced a myocardial inhibition on isolated perfused rabbits heart and decreased the motility of Ascaridia galli worms. These effects appeared to be dose-dependent. Transient fall in blood pressure was observed following intravenous injection of both extracts into anesthetized dogs. The alcoholic and chloroformic extracts of Cynanchum acutum L. were devoid of estrogen, and rogen and progesterone-like actions

Phytochemical study of Laurence papulosa [forsook] grev part II lipids proteins and carbohydrates

The thalli of the red alga: Laurencia papillosa [Forssk.] Grev. yield 0.18% of lipids. Cholesterol was isolated and identified in the unsaponifiable fraction. Arachidic, arachidonic, heptadecanoic, lauric, myristoleic, palmitic, oleic or linoleic, stearic, tridecanoic and undecanoic acids were identified among 21 components of the saponifiable fraction by GLC technique. The total protein content in the thalli amounted 9.2%. Paper and two dimensional TLC techniques of the free amino acids and protein hydrolysate prepared from algal thalli showed the presence of alanine, aspartic and glutamic acids, leucine, serine, threonine, and tryptophan. While arginine, cystine, phenyl alanine, and valine were only noticed in the protein hydrolysate. Quantitative analysis of each of the amino acids in each fraction was carried out. The alga yielded 19.75% of neutral mucilage when extracted successively with cold and hot water. Xylose, mannose, glucose, galactose and galacturonic acid were detected in both cold and hot water mucilage hydrolysates by paper and TLC techniques

Macro and micromorphology of Sesbania Sesban [L] Merrill growing in Egypt Part I Stem and leaves

The macro- and micromorphology of stem and leaves of Sesbania sesban [L.] Merrill were presented with the view of finding out the diagnostic characters for identification of these organs in both entire and powdered forms

Macro-and micromorphology of sesbania sesban [L] Merrill growing in Egypt Part II the flower

A pharmacognostical study including macro and micromorphology of the flower of Sesbania sesban [L.] Merrill family fabaceae performed in order to establish its characteristic features to identify the plant

Macro-and micromorphology of sesbania sesban [L] merrill

The macro and micromorphological characters of the fruit and seed of Sesbania sesban [L.] Merrill family fabaceae growing in Egypt. are presented aiming to find out its diagnostic characters by which the pericarp and seed can be easily identified in both the entire and powdered froms