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Tropical Journal of Pharmaceutical Research
Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, Nigeria
ISSN: 1596-5996
EISSN: 1596-9827
Vol. 9, No. 3, 2010, pp. 251-256
Bioline Code: pr10031
Full paper language: English
Document type: Research Article
Document available free of charge

Tropical Journal of Pharmaceutical Research, Vol. 9, No. 3, 2010, pp. 251-256

 en Microbial load of some medicinal plants sold in some local markets in Abeokuta, Nigeria
Idu, MacDonald; Omonigho, Solomon E.; Erhabor, Joseph O. & Efijuemue, Harriet M.

Abstract

Purpose: To evaluate the microbial load on 17 randomly selected plant samples from 60 ethnobotanically collected medicinal plants from five local markets in Abeokuta, Ogun State, Nigeria.
Method: The pour plate method was used to cultivate serially diluted portions of the medicinal plant samples investigated. Enumeration of bacteria was carried out on nutrient agar (NA) while that of fungi was effected on Sabouraud agar (SA).
Results: The identified microbial isolates include 12 bacterial and 6 fungal genera. The mean heterotrophic bacteria counts of the different herbal samples ranged from 1.3 × 10 5 cfu/g ( Cnestis ferruginea check for this species in other resources ) to 6.7 × 10 6 cfu/g ( Daniellia oliveri check for this species in other resources ), while total fungal propagule counts ranged from 0.0 × 10 1 cfu/g ( Terminalia superba check for this species in other resources , Cola gigantea check for this species in other resources , Rauwolfia vomitoria check for this species in other resources , Zingiber officinale check for this species in other resources and Argemone mexicana check for this species in other resources ) to 7.1 × 10 6 cfu/g ( Nesogordonia papaverifera check for this species in other resources ). The synopsis and frequency (prevalence rate) of microbial species isolation showed that Bacillus check for this species in other resources spp. (82.4 %) and Mucor check for this species in other resources spp. (47.1 %) had the highest prevalence rates among bacteria and fungi, respectively.
Conclusion: The findings from this study emphasized the need for constant quality assessment of herbal drugs on sale in order to ensure the production of therapeutic products suitable for human consumption.

Keywords
Microbial load; Medicinal plants; Local markets; Abeokuta; Nigeria

 
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