There has been tremendous growth in field of herbal medicine as therapeutic agents. Dennettia tripetala, is known to possess ethnomedicinal properties and has been used for centuries in the Ayurvedic system of medicine for the treatments of various diseases. The present review provides detailed description on the distribution, ethno-medicinal use, phyto-constituents, and biological properties of the plant that justifies its use as a potential therapeutic agent in management of different diseases. The phyto chemical composition of Dennettia tripetala include alkaloids, tannins, saponins, flavonoids, terpenoids, steroids and cardiac glycosides while it biological activities include antioxidant, antidiabetic, antibacterial, antihypertensive, anticonvulsant, antitrypanosomal, antimalarial, anti-inflammatory and cytotoxic properties among others. In conclusion, Dennettia tripetala contains various nutritional and phytochemicals compositions that make it valuable for pharmacological purposes.
The present study investigated the effectiveness of H2SO4 pretreatment on seed dormancy breakage and growth parameters of Parkia biglobosa seedling. Parkia biglobosa seeds were soaked in 100% concentrated H2S04, 2 to 10 minutes at an interval of 2 minutes and from 15 to 185 minutes at an interval of 5minutes. Data including germination rate of the seed for each treatment were recorded and percentage germination were computed. Seedling parameters including numbers of leaves, stem height and stem stem girth were also recorded at 2 weeks intervals. H2SO4 pretreatment of P. biglobosa enhanced seed emergence with maximum effect (90 % and 100% emergence) at 20-and 40-minutes treatment. A progressive decrease in seed emergence were however recorded from 60 minutes of pretreatment onward. The stem girth, stem height and leaf counts of H2SO4 pretreated P. biglobosa increases with H2SO4 pretreatment time from 2 minutes and peaked up maximally at 40 minutes after which a progressive decrease were recorded from 60 minutes of pretreatment onward. The stem height and leaf count also increase with increase day of germination with maximal effect occurring between 14 and 70 days. In conclusion, H2SO4 pretreatments of the seeds of P. biglobosa may be effective for breaking dormancy and improving the seedling growth which can enhance the domestication and cultivation of these valuable seeds in the environment.
Khaya senegalensis (Desr.) A. Juss. is a valuable medicinal plant with various pharmacological and therapeutic properties. Khaya senegalensis has been reportedly used in treating patients with urinary infections, diarrhea, and inflammation. It also has been used for the treatment of liver and kidney diseases. The chemical studies of the plant have revealed that various parts of the plant contain alkaloids, carbohydrates, proteins and amino acids, saponins, glycosides, quinones, flavonoids, terpenoids, etc. Various studies have shown that Khaya senegalensis plays a role in the prevention of cardiovascular disease, lowering blood glucose and serum lipid, decreasing blood pressure and strengthening the heart. This herb has anti-bacterial, anti-malaria, anti-fungal and anti-inflammatory effects. The present review, therefore, revealed that Khaya senegalensis is an important medicinal plant due to its traditional uses for the treatment of several diseases and the presence of many important bioactive compounds which have been implicated in the various pharmacological properties of the plant. Further experimental studies are needed to fully validate the medicinal properties.
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