A Quantitative Study on the Ethnobotanical Knowledge about Wild Edible Plants among the Population of Messiwa

BACKGROUND: The preservation of traditional knowledge of wild edible plants (WEPs) is one of the challenges to the sustainability of natural resources. Therefore, it is crucial to assess the traditional knowledge of WEPs in relation to some socio-demographic and economic factors. METHODS: The survey was conducted among the Messiwapopulationthrough a semi-structured questionnaire. The first part of the questionnaire concerns socio-demographic and economic information, while the second part concerns the plants recognized and used by the informant. The recognition frequency (RF), the use frequency (UF), the general consumption frequency(CF), the recent consumption frequency (RCF), and the correlation between these frequencies were evaluated. A comparison of means was also used to compare informant’s knowledge according to their socio-demographic and economic status. RESULTS: The three species;Foeniculum vulgare, Ziziphus lotus, and Malva sylvestris were the most recognized (FR = 1) and the most used (FU = 1). The consumption frequency (CF) and the recent consumption frequency (RCF) for Foeniculum vulgare were 1 and 0.9, respectively. Taraxacum getulum, Calendula arvensis and Cyperus rotundus were the least recognized (FR= 0.16; 0.16; 0.48) and least used (FU = 0.3; 0.3; 0.4) species, respectively. The informants who showed a high level of traditional knowledge on WEPs were housewives, with a low level of schooling and at least 45 years old. CONCLUSION: Despite the decline in traditional knowledge about wild edible plants, some populations preserve this knowledge, especially among the elderly. Therefore, documentation of this knowledge is necessary through ethnobotanical and ethnomedicinal studies

The Antioxidant Activities of Ethanolic, Methanolic, Ethyl Acetate, and Aqueous Extracts of the Endemic Species, Lavandula mairei Humbert (A Comparative Study between Cold and Hot Extraction)

BACKGROUND: Medicinal plants have been used for therapeutic purposes and have shown important biological properties. This study aimed to evaluate for the first time the antioxidant activities, total flavonoid, and total phenolic contents of Lavandula mairei Humbert. The ethanol, methanol, ethyl-acetate, and water extracts were used for this purpose. METHODS: The antioxidant activities were assessed in vitro by free radical scavenging activity against 2,2-diphenyl-1-picrylhydrzyl (DPPH), ferric reducing antioxidant power (FRAP), and total antioxidant capacity (TAC). The total flavonoid and phenolic contents were determined spectrophotometrically with gallic acid and Quercetin as standards. RESULTS: In either Soxhlet or maceration methods, the flavonoids and the total phenolic contents were significantly higher in the methanolic extract (P<0.05) compared to other extracts. The total flavonoid content of L. mairei ranged between 119 and 224.6 mg QE/g DW for Soxhlet extracts and from 111.8 to 148.51 mg QE/g DW for maceration extracts. While the total phenolic content was between 35.12 and 99.37 mg GAE/g DW for Soxhlet extracts and 27.63 to 58.99 mg GAE/g DW for maceration extracts. In either the Soxhlet or maceration method, the highest total antioxidant capacity (TAC) was obtained using the ethanolic extract, while the aqueous extract had the highest antioxidant activity for DPPH and FRAP assays. CONCLUSION: These results showed that Lavandula mairei Humbert has great potential to be a promising candidate for natural plant sources of antioxidants