The use of local plant extracts in drinking water purification represents a sustainable alternative in the fight against diseases linked to unsafe water consumption in rural areas. The aim of this study was to evaluate the biochemical composition and antimicrobial activity of four local plant extracts used in rural areas of Burkina Faso to purify drinking water: Moringa oleifera seeds, Boscia senegalensis seeds, Opuntia ficus-indica cladodes, and Aloe vera leaves. These four extracts were then subjected to biochemical screening to identify phytocompounds, followed by quantification and evaluation of their antibacterial properties on ten pathogenic bacterial strains. The screening results revealed the presence of a variety of molecules (phenolic compounds, alkaloids, saponosides, etc.) in the different extracts studied. From a quantitative point of view, M. oleifera and B. senegalensis seeds showed a high total protein content (34.5 and 24.6 g/100 g DM). A. vera and O. ficus-indica extracts showed high levels of total carbohydrates (20.4 and 35.52 g/100 g DM) compared with total lipids and proteins. The same applies to phenolic compounds, which were also high in A. vera and O. ficus-indica extracts (17.42 and 26.5 mg GAE/100 mg DM) compared to M. oleifera and B. senegalensis seeds. In terms of antibacterial properties, the four extracts studied showed inhibition diameters ranging from 7.33 to 16.33 mm. These results reflect the ability of the different extracts to eliminate pathogenic microorganisms present in water. Overall, this study stands out for its innovative character, offering an in‐depth understanding of the biochemical composition and antimicrobial properties of four distinct extracts of local plants commonly used in traditional drinking water purification practices. It enriches existing knowledge by providing new data on the biochemical composition and bioactivity of these extracts. In particular, the study highlights the synergistic effects of the bioactive compounds present, underlining their essential role in improving the sanitary quality of water consumed in rural areas, where sustainable and accessible solutions are crucial.

The consumption of unsafe water in rural areas is a real public health problem in developing countries. This situation mainly affects children under five years of age and causes several deaths and many cases of malnutrition every year. The objective of this study was to evaluate and optimize the capacity of four local plant extracts in the potabilization of unsafe water. Thus, Moringa oleifera and Boscia senegalensis seeds, or Aloe vera and Opuntia ficus-indica mucilages were prepared in a solution and applied during a jar test as biocoagulants and bioflocculants on three raw water samples of 82.3 NTU, 549.8 NTU and 796.9 NTU. After treatment results showed that 0.9 g/L of Moringa biocoagulant or 1 g/L of Boscia biocoagulant applied with 0.4 mL of Aloe vera bioflocculant or 0.6 mL of Opuntia ficus-indica bioflocculant reduced the turbidity of each water sample to values less than 5 NTU after only 15 min of decanting. Moreover, the sanitary quality of the water treated by these different extracts showed a perfect conformity of the physicochemical and microbiological parameters with the standards of acceptability in drinking water decreed by the World Health Organization. Thus, the application of these local plant extracts has made it possible to considerably improve the quality of unsafe water in record time. Their popularization could be an alternative in the fight against malnutrition related to the consumption of unsafe water, especially in rural areas.

This study consisted in the formulation and evaluation of the organoleptic, physicochemical, and microbiological qualities of nectars and jam prepared from Vitex doniana fruit. Nectars (five types) consisted of two acidulated with lemon, two acidulated with tamarind with pH values of 3.45 and 3.55, and a control. Jams (three types) were made as one acidulated with lemon, one acidulated with tamarind with a pH value of 3.88, and a control with a pH value of 4.44. The Brix values were 10.75 and 60.00 for all nectars and jam, respectively. The total sugar content of the nectars ranged from 9.52 ± 0.04 (NC1) to 9.11 ± 0.03% (T) and that of the jams from 58.27 ± 0.02% to 49.97 ± 0.01%. It appeared that prepared nectar and jam samples were of good microbiological quality, confirming compliance with good hygiene and manufacturing practices throughout the process and compliance with Algerian and Luxembourg standards.

This study explores the microbiological quality of raw vegetables and salads in Ouagadougou, Burkina Faso, by assessing contamination levels and antimicrobial resistance of isolated bacteria across the supply chain. A total of 300 samples were collected from production fields, urban markets, and mass catering sites, and analyzed for Escherichia coli and Salmonella spp. using ISO standard methods. Susceptibility testing was performed on isolates. The results show that contamination levels vary significantly (p<0.05), with E. coli concentrations reaching up to 4.08 ± 0.04 log CFU/g. The prevalence of Salmonella spp. remains low (0 to 3%), with contamination detected only in ready-to-eat salads. In terms of antimicrobial resistance, E. coli isolates showed high resistance to amoxicillin (62.12%), and the Multi-Antibiotic Resistance (MAR) index exceeded 0.2 for 45.5% of isolates. Among Salmonella spp. isolates, 42.11% were resistant to amoxicillin, but notable sensitivity to fluoroquinolones and carbapenems (84.21%) was observed. These findings highlight that agricultural practices and final preparation hygiene are critical control points and confirm the vegetable supply chain as a reservoir for antimicrobial resistance, providing essential data to guide public health policies in Ouagadougou.