The present study was carried out to determine the monthly variations of physico-chemical parameters in water samples from Chiffa river at Blida, North West of Algeria from April to August 2006. Water samples were analyzed for physico-chemical parameters and the results showed their monthly variations as follows: pH 7.5-7.6, electrical conductivity 0.87–1.06 mS·cm−1, nitrate 0–7.00 mg·L−1, nitrite 0–0.28 mg·L−1, ammonia 0–0.03 mg·L−1, phosphate 0–0.94 mg·L−1, sodium 19.3–47.0 mg·L−1, chloride 35.7–52.0 mg·L−1, calcium 90.3–104.7 mg·L−1, magnesium 27.3–37.7 mg·L−1, organic matter 0.4–3.9 mg·L−1, chlorophyll a 0.7–132.3 mg·L−1, and bicarbonate 219.3–248.7 mg·L−1. The analyzed physico-chemical parameters were almost not exceeded the maximum permissible limit of WHO and Algerian Water Quality Guidelines. A total of 53 taxa belonging to 4 divisions have been identified, including Chlorophyta (52.83% of taxa), Bacillariophyta (28.30%), Cyanophyceae (16.98%), and Charophyta (1.89%).
This work has focused on a pharmaceutical plant waters and the environmental impact of its discharges. The Water Quality Index (WQI), the Organic Pollution Index (OPI) and the Sodium Adsorption Ratio (SAR) of incoming and outgoing waters were analyzed over seasonal variations for 5 months using classical and mathematical indices. Highly significant increases were observed at the output (p < 0.001) for electrical conductivity, alkalinity, calcium and sodium; very significant (p < 0.01) for nitrites, COD and BOD 5 ; significant (p < 0.05) for turbidity, potassium and chlorides. The sulfates, nitrates, phosphates, ammonia, TSS, magnesium, aluminum, iron and manganese showed no significant differences (p > 0.05). These parameters remained high all over the study period except for the BOD 5 . The WQI was reported in input waters in the range 85.9-89.5 indicating water safe for domestic use, range 42.3-60.9 (medium to bad) in output waters highlighting the water pollution. The OPI highlighted waters with low-to-moderate pollution, essentially due to high levels of nitrites. The SAR was found in "medium-to-high" salinity and "low sodium" ranges, thus precautions required in soils but without significant global effects. The COD/BOD 5 ratio highlighted a wastewater sometimes difficultly biodegradable (ratio > 3). In conclusion, often throughout all the study period, the outgoing waters were found with bad quality and non-negligible risks for soils; it is thus strongly advocated that these waters must undergo appropriate treatment to improve its physicochemical quality.
Inula viscosa (L.) is a medicinal plant that has been used for a long time for its many therapeutic properties, especially to treat pain and inflammation. The aim of this study was to evaluate the anti-inflammatory, analgesic, and antipyretic activities of methanolic extracts and decoctions of Inula viscosa leaves and flowers. The phenol content of the extracts was determined by spectrophotometric methods. The extracts were administered orally (400, 600, and 800 mg/kg) to mice and/or rats in the study of antiinflammatory (carrageenan-induced paw edema test), analgesic (acetic acid-induced writhes test), and antipyretic (Brewer’s yeast-induced pyrexia method) activities. The highest phenolic content was found in leaf methanolic extract. Methanolic extracts and decoctions of leaves and flowers showed significant decrease in mice paw edema after 4 h (P < 0.01; P < 0.001), and an appreciable analgesic effect at the tested doses with a maximum of writhing inhibition observed with leaf methanolic extract at the dose of 800 mg/kg (93.39%; P < 0.001). The rectal temperature of the rats decreased significantly (P < 0.01; P < 0.001) after 4 h in groups treated with leaves and flowers extracts at the doses of 600 and 800 mg/kg. The obtained results confirm the traditional uses of Inula viscosa.
The aim of the study is to evaluate the degree of contamination of the aquifer of Mitidja Research ArticleS. Zamiche et al.
De nombreuses plantes aromatiques, considérées parfois comme adventices, possèdent des propriétés biologiques très intéressantes dont l’application s’étend à divers domaines telles que la médecine, la pharmacie, la cosmétologie et l’agriculture. Ce travail, réalisé sur l’huile essentielle des capitules de Chrysanthemum coronarium L., a pour objectifs de localiser les sites sécréteurs, de recenser les différents composés biochimiques et d’évaluer certains effets thérapeutiques. L’étude microscopique a montré la présence des glandes sécrétrices sessiles et des papilles responsables de la sécrétion de l’huile essentielle au niveau des capitules du chrysanthème à couronne. L’analyse par CG/MS de l’huile essentielle des capitules du chrysanthème à couronne, dont le rendement est de 0,15%, a permis l’identification de 57 constituants (89,51%) dont certains sont majoritaires, tels que l’ester d’acide acétoacétique, de 3(10)carèn-4-ol (14,01%) et l’acétate de verbanyle (8,20%). Malgré sa faible activité antimicrobienne, l’huile essentielle des capitules de Chrysanthemum coronarium L. testée sur 11 microorganismes par la méthode de diffusion sur Gélose se distingue par une activité remarquable sur Bacillus subtilis avec une zone d’inhibition de 20,33 mm ± 0,58. L’huile essentielle possède un effet anti-inflammatoire comparable à celui du diclofénac à une concentration de 50 mg/kg avec un pourcentage de réduction d’œdème de 46,95%.
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