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The work embodied in this book is mainly concerned §with the isolation and characterization of chemical §constituents of Stachys parviflora, Linn., which §belongs to the family Lamiaceae (formerly called §Labiateae). The isolated compounds, whether new or §have been previously reported in the literature, §were characterized by using different spectroscopic §techniques including 1H NMR, 13C NMR, DEPT, HMQC, §HMBC, COSY 45 ,NOESY, EI-MS, FAB-MS, IR and UV.§§The studies on Stachys parviflora Linn., resulted in §the isolation and characterization of thirteen §compounds consisting of...

Onion (Allium cepa L), a popular vegetable all over the world, has great economic importance due to its medicinal as well as dietetic values. Basal rot disease caused by Fusarium oxysporum f. sp. cepae is one of the most destructive soil-borne diseases of onion that causes important yield losses in all growing areas of the world. The causal organism infects the basal stem plate of the bulb and eventually kills the entire plant through degradation of the basal plate. Synthetic pesticides are generally used to combat this menace. However, these agro-chemicals are responsible for...

Neem is the common name given to the different species of large, evergreen, glabrous shady trees, grown in semi-arid regions of the world. In Pakistan and India the common neem tree, also popularly known as Margosa is Azadirachata indica A. Juss. Neem products isolated from the neem tree were nimbinin, nimbin and nimbidin. Siddiqui (1942) was the first scientist to isolate and purify the neem constituents of its extract. In the present study, effects of Cypermethrin and two crude ethanolic neem extract RB-a and RB-b on the activity of enzymes (GOT, GPT, LDH and cholinesterase) against the...