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2 Ecological Engineering & Environmental Technology

2 2024

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Phenolic Content and Antioxidant Activity of Cannabis sativa L. Flowers from the Ketama Region in Northern Morocco

100%

Ahidar N. , Labhar A. , Benamari O. , Ahari M. , Salhi A. , Elyoussfi A. , Amhamdi H.

2024

tom Vol. 25, iss. 1

209-215

Within the framework of Bill No.13-21 on the legal use of cannabis in Morocco, we studied the Cannabis sativa L. plant, known as ‘Beldeya,’ grown in the Ketama region of northern Morocco. In the present study, phytochemical screening, a quantitative study on ethanol, chloroform, and hexane extracts of cannabis flowers, and a study of antioxidant potential were carried out. In all three extracts, phytochemical analysis revealed the presence of different kinds of secondary metabolites, including flavonoids, terpenoids, saponins, anthocyanins, tannins, and reducing sugars. The Folin-Ciocalteu technique was used to measure the total amount of polyphenols, and the results showed that the total amount of polyphenols varied from 1.802 mg to 2.225 mg of gallic acid equivalent (EqAG). Flavonoid assay with Aluminum chloride (AlCl3) revealed that all three extracts contained flavonoids, ranging from 0.242 mg to 0.442 mg quercetin equivalent (EqQ). Using the DPPH (2,2-diphenyl-1-picrylhydrazyl) reduction test, antioxidant activity was evaluated. The results obtained show that the ethanolic extract exhibited superior activity, with an IC50 value of 231.39 μg/ml, followed by the hexanic and chloroformic extracts, having IC50 values of 376.40 μg/ml and 769.60 μg/ml, respectively.

Investigation of the Antioxidant and Anti-Inflammatory Capacities of Different Extracts from Cistus ladanifer L. Leaves in the Ait Ammart Region (Northern Morocco)

84%

Benamari O. , Labhar A. , Ahidar N. , Salhi A. , Ahari M. h. , Elyoussfi A. , Benyoub B. , Amhamdi H.

2024

tom Vol. 25, iss. 3

178--184

Plants are a significant source for identifying new compounds (particularly secondary metabolites) with medicinal value for drug development, pharmaceuticals, and food additives. Many of these healing plants are frequently used in conventional medicine to treat and prevent various diseases. The purpose of the current research is to assess the total phenolic content (TPC) and total flavonoid content (TFC) for phytochemical analysis, DPPH and FRAP (Ferric Reducing Antioxidant Power) assays for antioxidant activity (AOA), and the activity of reducing inflammation exhibited by various extracts, which were determined by measurement of absorbance with a UV spectrophotometer. The outcome demonstrated that the Cistus ladanifer L leaf aqueous extract (EAqCL) has the highest yield (15.581%) and the highest phenolic content (98.28 ± 0.32 mg GAE/gext) compared to the other extracts. Whereas, ethanol extract (EECL) exhibited the highest flavonoid content (11.39 ± 1.45 mg QE/gext), DPPH-radical scavenging activity (RSA = 94.534 ± 1.24%) at 800 μg/ml and FRAP (1.017 ± 0.12) at 400 μg/mL. The extract also showed better anti-inflammatory activity (95.61 ± 0.92%) at 1000 μg/ml. According to the results obtained, this sticky shrub growing in the Ait Ammart region has great potential for exploiting natural sources of bioactive substances and producing pharmacologically active metabolites.