Variation of Secondary Metabolite Contents and Activities against Bovine Diarrheal Pathogens among Zygophyllaceae Species in Benin and Implications for Conservation
This study was based on optimal defense theory, which
distinguished 2 categories of plants: K-strategist species and r-strategist
species. Phytochemical screening was carried out based on aqueous extracts of
the leafy stems of B. aegyptiaca and Guaiacum officinale
(K-strategist species) and Tribulus terrestris and Kallstroemia
pubescens (r-strategist species) for the identification of chemical
compounds. The phenolic compounds were quantified by quercetin and vanillin
methods. The extracts were tested against 5 bacterial strains responsible for
severe diarrhea in bovines. Our results indicated the presence of many
phytochemicals, such as alkaloids, flavonoids, saponosides, and tannins. The
diversity in secondary metabolites is higher for r-strategist than K-strategist
species. The contents of total polyphenols ranged from 4.82 ± 0.05 to 41.84 mg
GAE/g of extract. The flavonoid contents varied from 30.64 ± 0.35 to
57.11 ± 0.13 mg QE/g of extract and those of the tannins from 0.04 ± 0.00 to
0.06 ± 0.01 mg PE/mL. The sensitivity of the bacterial strains showed a
significant dependence on the extracts. Of the species, K. pubescens
showed a bactericidal activity on the majority of strains tested and thus could
be a potential substitute for B. aegyptiaca in the treatment of
infectious diarrhea. [...] Georg Thieme Verlag KG Rüdigerstraße 14, 70469 Stuttgart, ...
Source: Planta Medica - Category: Drugs & Pharmacology Authors: Ouachinou, J éronime Marie-Ange Sènami Dassou, Gb èwonmèdéa Hospice Agbankp é, Alidehou Jerrold Koudoro, Yaya Alain Agbangnan, Pascal Hidalgo Triana, Noelia Favi, Gnimansou Abraham Djidohokpin, Donald Adomou, Aristide Cossi Tags: Original Papers Source Type: research
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