EurekaMag.com logo
+ Translate

The conessine content of Holarrhena pubescens from Malawi


, : The conessine content of Holarrhena pubescens from Malawi. International Journal of Pharmacognosy 34(4): 305-307

Qualitative and quantitative examination of conessine in the bark and leaves of samples of Holarrhena pubescens Wall. from Malawi was carried out using thin-layer chromatography and gas chromatography. The results were compared with values obtained by the same methods for a sample of H. pubescens bark from Nepal. No conessine could be detected in the leaves but two of the bark samples from Malawi showed levels of conessine comparable with the Nepalese material. The GC method was more accurate but the TLC method could be adopted as a useful method for an unsophisticated analysis of samples where GC apparatus was not available.

(PDF same-day service: $19.90)

Accession: 002980684

DOI: 10.1076/phbi.34.4.305.13229

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Siddiqui, B.S.; Ali, S.Tahir.; Rizwani, G.H.; Begum, S.; Tauseef, S.; Ahmad, A., 2012: Antimicrobial activity of the methanolic bark extract of Holarrhena pubescens (Buch. Ham), its fractions and the pure compound conessine. The antimicrobial activity of the methanolic extract of the bark of Holarrhena pubescens, its fractions, and conessine, a steroidal alkaloid, was determined against various bacteria and fungi using the agar diffusion method. They were all found to...

Duez P.; Chamart S.; Lejoly J.; Hanocq M.; Zeba B.; Sawadogo M.; Guissou P.; Molle L., 1987: Study of conessine content of holarrhena floribunda stem bark in burkina faso. The conessine content evolution of Holarrhena floribunda stem bark is studied on samples coming from cultivation and natural sites om Burkina Faso. The content increases with stem diameter but is not influenced by the growth site, both for natural...

Paris, R., 1951: On a new acquisition in phytotherapy: Holarrhena floribunda and its principal alkaloid: conessine. Gazette Medicale de France Spec. No.: 79-83

Duez, P.; Chamart, S.; Lejoly, J.; Hanocq, M.; Zeba, B.; Sawadogo, M.; Guissou, P.; Molle, L., 1987: Changes in conessine in stem bark of Holarrhena floribunda in Burkina Faso. Annales Pharmaceutiques Francaises 45(4): 307-313

Levy O.; Duez P.; Lejoly J.; Chamart S.; Sawadogo M.; Hanocq M., 1990: Cultivation of holarrhena floribunda for conessine production in burkina faso. The cultivation, conessine content and harvesting methodology for Holarrhena floribunda were investigated. Allometric measurements are proposed as prediction tools for estimation of trunk total productions of bark and conessine. A linear relations...

Bogne, K.Patrice.; Penlap, B.Véronique.; Lontsi, D.; Etoa, Fçois-Xavier., 2007: Antibacterial activities of the extracts and conessine from Holarrhena floribunda G. Don. (Apocynaceae). The methanolic extract and conessine isolated from the stem bark of Holarrhena floribunda (Hf) were tested for their antibacterial activities on Bacillus: Bacillus cereus, Bacillus subtilis, Bacillus megaterium and Bacillus stearothermophilus usin...

Kavitha, D.; Shilpa, P.N.; Devaraj, S.N., 2003: Antibacterial effect of conessine, an alkaloid from Holarrhena antidysenterica, against enteropathogenic Escherichia coli. The antibacterial properties of conessine and total alkaloids from H. antidysenterica [H. pubescens] seeds collected from Tamil Nadu, India were evaluated against E. coli. In disc diffusion assay, inhibition zones of 16, 19 and 20 mm were recorded...

Thappa, RK.; Tikku, K.; Saxena, BP.; Vaid, RM.; Bhutani, KK., 1989: Conessine as a larval growth inhibitor, sterilant, and antifeedant from Holarrhena antidysenterica Wall. Secondary plant substances play a major role in defensive strategies against insects. These chemicals can impair the normal physiology of the insect in a variety of ways as larval growth retardants, feeding deterrents, antihormones or, in extreme...

Dua, V.K.; Verma, G.; Singh, B.; Rajan, A.; Bagai, U.; Agarwal, D.Dayal.; Gupta, N.C.; Kumar, S.; Rastogi, A., 2013: Anti-malarial property of steroidal alkaloid conessine isolated from the bark of Holarrhena antidysenterica. In the face of chronic and emerging resistance of parasites to currently available drugs and constant need for new anti-malarials, natural plant products have been the bastion of anti-malarials for thousands of years. Moreover natural plant produc...

Patel, R.K.; Prajapati, A.M., 2008: Development and validation of a visible absorption densitometry method for quantitation of conessine in Holarrhena antidysenterica (Kurchi). A selective, precise, and accurate high-performance thin-layer chromatographic (HPTLC) method has been proposed for the analysis of conessine in Holarrhena antidysenterica. The method involves visible densitometric evaluation of conessine resolvi...