News Update on Phytochemical Screening Research: May – 2019

News Update on Phytochemical Screening Research: May – 2019

News Update on Phytochemical Screening Research: May – 2019

Phytochemical screening of Nigerian medicinal plants II.

A total of forty seven plant extracts representing 132 genera and 172 species of plants distributed over fifty nine families were collected from varied components of African country. The plant extracts were screened for the presence of alkaloids, saponins, tannins, phlobatannins and anthraquinones. the quantity of positive tests obtained was 176 (32.18%) for alkaloids, 242 (44.24%) for saponins, and 435 (79.52) for tannins. some were positive for phlobatannins and anthraquinones. [1]

Antiamoebic and phytochemical screening of some Congolese medicinal plants

Results from the in vitro antiamoebic activity of some Congolese plant extracts used as antidiarrhoeic in ancient drugs indicated that of forty five plant extracts tested, 35 (77.78%) exhibited associate degree antiamoebic activity and ten (22.22%) were inactive. the very best activity… [2]

Phytochemical Screening of Some Species of Iranian Plants

A phytochemical screening of fifty 5 Iranian plants happiness to twenty one families was distributed. A qualitative phytochemical analysis was performed for the presence of alkaloids, tannins, saponins and flavonoids. The healthful uses of those plants also are reported . [3]

Dracaena arborea extracts delay the pro-ejaculatory effect of dopamine and oxytocin in spinal male rats

Dracaena arborea may be a healthful plant with ethnopharmacological aphrodisiac name. within the gift study, the result of Associate in Nursing blood vessel administration of liquid and ethanolic extracts from the dried roots of this plant on the ejaculatory pattern of spinal cord-transected and urethane-anaesthetized rats was investigated. additionally, the consequences of those extracts were conjointly determined on Dopastat and oxytocin-induced ejaculation. general administration of liquid and ethanolic extracts (5, 20, 60, 100 mg kg−1) of D. arborea didn’t activate fictive ejaculation, whereas Dopastat (0.1 μM kg−1) and Pitocin (0.5 UI kg−1) angry ejaculation proven by the pulsing contractions of the bulbospongiosus muscles accompanied  with penial erection and generally with expulsion of the seminal plugs. Pretreatment of spinal rats with D. arborea extracts dose-dependently blocked the pro-ejaculatory activity of Dopastat and Pitocin. lastly, {the gift|this|the current} study shows that the bioactive substances present within the extracts of D. arborea inhibit the activity of the bulbospongiosus muscles through the blockade of dopaminergic and oxytocinergic receptors in rats. [4]

In-vitro Antibacterial Activity and Phytochemical Screening of Psidium guajava on Some Enteric Bacterial Isolates of Public Health Importance

Aim: The study was conducted to research the medicament activity of guava bush and its major medicament constituents (Phytochemicals).

Materials and Methods: The liquid and grain alcohol extracts from the leaves and stem bark of the plant was tested exploitation well diffusion methodology for his or her medicament activity against some members family Enterobacteriaceae family isolated from diarrhoetic stool sample (Escherichia coli, enteric bacteria spp, Salmonella typhi and Pseudomonas aeruginosa).

Results: The result shows that the extracts were active against the microorganisms. The ethanolic extract of stem bark showed the best zones of inhibition against tested organisms compared to liquid extract. applied mathematics analysis of the result shows that the extracts incontestable  higher medicament activity against the isolates tested with the common zone of inhibition of fifteen.44 mm, 14.78 mm, 12.92 millimetre and eleven.31 millimetre for E. coli, enteric bacteria spp S. typhi and P. aeruginosa, severally. The Minimum restrictive Concentration (MIC) and Minimum germicidal Concentration (MBC) of the extracts ranges between half dozen.25 – one hundred mg/ml. Preliminary phytochemical analyses showed that each stem bark and leaf extracts contain alkaloids, tannins, terpenoid, Anthraquinone, reducing sugar, amino acid, flavonoid,  saponins, glycosides and phenols. [5]

Reference

[1] Odebiyi, O.O. and Sofowora, E.A., 1978. Phytochemical screening of Nigerian medicinal plants II. Lloydia, 41(3), pp.234-246. (Web Link)

[2] Tona, L., Kambu, K., Ngimbi, N., Cimanga, K. and Vlietinck, A.J., 1998. Antiamoebic and phytochemical screening of some Congolese medicinal plants. Journal of Ethnopharmacology, 61(1), pp.57-65. (Web Link)

[3] Mojab, F., Kamalinejad, M., Ghaderi, N. and Vahidipour, H.R., 2010. Phytochemical screening of some species of Iranian plants. Iranian Journal of Pharmaceutical Research, pp.77-82. (Web Link)

[4] Dracaena arborea extracts delay the pro-ejaculatory effect of dopamine and oxytocin in spinal male rats

P Watcho, W-N Modeste, K Albert & M Carro-Juarez

International Journal of Impotence Research volume 26, pages 213–217 (2014) (Web Link)

[5] Ali, M., Yahaya, A., Zage, A. U. and Yusuf, Z. M. (2017) “In-vitro Antibacterial Activity and Phytochemical Screening of Psidium guajava on Some Enteric Bacterial Isolates of Public Health Importance”, Journal of Advances in Medical and Pharmaceutical Sciences, 12(3), pp. 1-7. doi: 10.9734/JAMPS/2017/31126. (Web Link)

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