Ethnobotanical and ethnomedicinal analysis of wild medicinal plants traditionally used in Naâma, southwest Algeria

Chemical Variability and Anti-Inflammatory Activity of Rosmarinus officinalis L. Leaf Essential Oil from Algerian Sahara

The chemical composition of 71 oil samples from the leaves of Rosmarinus officinalis L., harvested in three provinces: Naâma (Western Algeria), Béchar and Adrar (Algerian Sahara), was investigated by GC-FID, GC/MS and 13CNMR. In total, 52 compounds were identified accounting for 88.8 % to 99.9 % of the total composition. The chemical composition of the oils was largely dominated by monoterpenes, with 1,8-cineole (9.7-70.2 %), camphor (0.3-31.0 %) being the major compounds followed by borneol (0.3-21.0 %), α-pinene (4.5-14.5 %), β-pinene (0.1-12.0 %), linalool (0.7-9.9 %) and verbenone (up to 11.1 %) which was present only in the samples harvested in Adrar. All compositions (71 samples) were submitted to statistical analysis. Combination of hierarchical clustering dendrogram and principal component analysis suggested the existence of three groups (one of these being subdivided into two sub-groups) which were distinguished on the basis of 1,8-cineole, camphor and verbenone contents. Four essential oil samples, containing 1,8-cineole and/or camphor as main components, exhibited anti-inflammatory activity against lipoxygenase, with IC50 values in the range 93 to 155 μg/mL.

Investigation of Antifungal Action of Fractions C17H31NO15 Isolated from Artemisia herba-alba extract versus Isolated Aspergillus niger from Zee maize

BACKGROUND

Plants are harmed by parasitic organisms, and toxic poisons are created. Phytopathogenic fungi create toxins that can severely harm plants' basic physiological functioning.

OBJECTIVE

Investigation of antifungal impact of various fractions of methanol extract of Artemisia herba-alba to Aspergillus niger as a plant pathogen.

METHODS

Artemisia herba-alba extract was purified using column chromatography, giving various antifungal fractions tested versus A. niger.

RESULTS

The 6th fraction give the highest inhibition zone with a diameter of 5.4 cm and MIC 125.02 ± 4.9 μg/ml, which was identified using Mass spectroscopy, 1HNMR, Elemental analysis as well as IR testing, revealing the chemical formula of the purified fraction. Ultrastructure alteration of treated A. niger was examined versus control using the transmission electron microscope. Purified fraction has tested versus normal cell line with minimal cytotoxicity.

CONCLUSION

These results revealed the possibility of using Artemisia herba-alba methanol extract as a promising antifungal versus phytopathogenic fungi, especially A. niger after more verification of results.

Effects of Chloride and Sulfate Salts on Seed Germination and Seedling Growth of Ballota hirsuta Benth. and Myrtus communis L

Soil salinity is a well-known abiotic factor affecting the germination and seedling growth of various plant species. Therefore, we evaluated the effects of different chloride salts (NaCl, KCl and MgCl2) and sulfate salts (Na2SO4, K2SO4 and MgSO4) on the seed germination and early seedling growth of two important ethnomedicinal shrubs of North Africa and the Mediterranean basin (Ballota hirsuta and Myrtus communis). Seeds of these species were subjected to five salinity levels (0-100 mM) and incubated at 20 °C under a light regime (12 h photoperiod). Both species demonstrated their highest germination percentage under control conditions (i.e., without salinity). However, as salinity levels increased, the germination percentages for both species decreased, regardless of the type of salt used. Cations appeared to be more determinative than the anions in regulating the seed germination of both species. M. communis seeds displayed greater sensitivity to sodium (Na+) salts, especially when accompanied with chloride (Cl-) anions. At the higher salt concentrations (75 and 100 mM), Na+ salts had a more pronounced inhibitory effect on M. communis seedling growth compared to potassium (K+) and magnesium (Mg2+) salts. Conversely, Mg2+ salts were more detrimental to seedling growth in B. hirsuta. Based on our results, it can be concluded that both of these species are able to tolerate a moderate level of salinity. Overall, B. hirsuta may be a promising choice for rehabilitating the soils dominated by chloride salts, while M. communis could be utilized for restoring sulfate-dominated soils.

In Vitro and In Silico Activities of E. radiata and E. cinerea as an Enhancer of Antibacterial, Antioxidant, and Anti-Inflammatory Agents

Eucalyptus, a therapeutic plant mentioned in the ancient Algerian pharmacopeia, specifically two species belonging to the Myrtaceae family, E. radiata and E. cinerea, were investigated in this study for their antibacterial, antioxidant, and anti-inflammatory properties. The study used aqueous extracts (AE) obtained from these plants, and the extraction yields were found to be different. The in vitro antibacterial activity was evaluated using a disc diffusion assay against three typical bacterial strains. The results showed that the two extracts were effective against all three strains. Both extracts displayed significant antioxidant activity compared to BHT. The anti-inflammatory impact was evaluated using a protein (BSA) inhibition denaturation test. The E. radiata extract was found to inhibit inflammation by 85% at a concentration of 250 µg/mL, significantly higher than the Aspirin. All phytoconstituents present good pharmacokinetic characteristics without toxicity except very slight toxicity of terpineol and cineol and a maximum binding energy of -7.53 kcal/mol for its anti-TyrRS activity in silico. The study suggests that the extracts and their primary phytochemicals could enhance the efficacy of antibiotics, antioxidants, and non-steroidal anti-inflammatory drugs (NSAIDs). As pharmaceutical engineering experts, we believe this research contributes to developing natural-based drugs with potential therapeutic benefits.

Exploration of the Wild Edible Plants Used for Basic Health Care by Local People of Bahawalpur and Adjacent Regions, Pakistan

The current study aimed to explore the traditional knowledge and practices of indigenous communities in Bahawalpur and adjacent regions, Pakistan, to treat a variety of diseases with a particular focus on the usage of ethnomedicinal wild plants. The objective of the study was to collect and evaluate local and indigenous knowledge regarding the quantity, variety, use and management of resources by the people. Data were gathered using Rapid Appraisal Approach (RAA), which involved in-person interviews. The data were analyzed using descriptive statistics methods as well as common ethnobotanical analytical techniques viz. use value (UV), relative frequency of citation (RFC), informant consensus factor (ICF), fidelity level (FL), relative importance (RI), frequency index (FI), family use value (FUV), family importance value (FIV), popular therapeutic use value (POPUT), plant part value (PPV), preference ranking (PR), cultural significance index (CSI), rank order priority (ROP) and Jaccard index (JI). A total of 158 plant species from 49 families were identified. The perennial herbs made up 72% of the documented species of therapeutic plants. There were 21 different species in each of the two major plant families i.e., Fabaceae and Poaceae. The maximum ICF were calculated for gonorrhea and paralysis (1.0) and maximum POPUT was calculated for skin disorders (0.088) and cough (0.077), respectively. The maximum UV was found for Rumex crispus (0.57) and RI for Leucaena leucocephala (4.38). Heliotropium crispum had the highest FL value (83%) and is used to treat kidney diseases. Alhagi maurorum had the greatest RFC (0.009) and FI (0.93). Arecaceae (0.45) and Fabaceae (13.39%) had the greatest FUV while Poaceae and Fabaceae had the highest FIV (13.29 for each). Leaves were the most frequently used plant part (35%). Alhagi maurorum (4.0) and Rumex crispus (32.57) had the highest CSI and ROP, respectively. The maximum JI (28.31) was calculated for Cholistan desert. These results showed the local population's reliance on herbal remedies to treat prevalent illnesses. To demonstrate the viability of species, it's crucial to emphasize both the use and conservation of these species. Adopting innovative applications, enhancing their value, and prioritizing the protection of multipurpose wild plants in inhabited environments is vital.

A multivariate and quantitative assessment of medicinal plants used by the indigenous Malayali tribes in the Javadhu hills of Tiruvannamalai district, Tamil Nadu, India

The study of medicinal plants with their traditional uses and related pharmacological studies has received more attention during the past several decades around the world. The Malayali tribes of the Javadhu Hills in the Eastern Ghats rely heavily on a system of traditional medicine for healthcare. A qualitative ethnographic method with a semi-structured questionnaire was used to interview 52 people across 11 localities in the Javadhu Hills. In the data analysis, descriptive statistics such as Use reports (UR), frequency of citations (FC), relative frequency of citations (RFC), informant agreement ratio (IAR), fidelity level (FL), and informant consensus factor (FIC) were studied. In the current investigation, 146 species from 52 families and 108 genera were discovered to treat 79 diseases. Leguminosae and Apocynaceae were the dominant families (12 species each). The most frequently used life form was the herb and the plant part were the leaf. The majority were being harvested from natural resources. Most medicines were taken orally. The most frequently cited species are Moringa oleifera and Syzygium cumini. The illnesses were divided into 21 categories. The majority of the plants mentioned are utilised to increase human immunity and health. The principal ailment (general health) was revealed by two-way cluster analysis and PCA. The species Litsea decanensis, Phoebe paniculata, Commiphora caudata, etc., were new records for the Javadhu hills according to a comparison between the current study and previous local and regional research. Documenting novel ethnomedicinal species and their therapeutic applications will encourage more phytochemical and pharmacological research and may even result in the creation of new medications. Furthermore, the study's significant novelty is that principle component analysis and two-way cluster analysis clearly revealed that the species that are used to treat various diseases, as well as species that are closely associated with treating specific ailment categories, are distinct. Significantly, species recorded in this study rely on maintaining and improving general body health of humans.

Role of ethno-phytomedicine knowledge in healthcare of COVID-19: advances in traditional phytomedicine perspective

Background

Since the outbreak of the COVID-19 virus, ethnomedicinal plants have been used in diverse geographical locations for their purported prophylactic and pharmacological effects. Medicinal plants have been relied on by people around the globe for centuries, as 80% of the world’s population rely on herbal medicines for some aspect of their primary health care needs, according to the World Health Organization.

Main body

This review portrays advances in traditional phytomedicine by bridging the knowledge of ethno-phytomedicine and COVID-19 healthcare. Ethnomedicinal plants have been used for symptoms related to COVID-19 as antiviral, anti-infective, anti-inflammatory, anti-oxidant, antipyretic, and lung–gut immune boosters. Traditionally used medicinal plants have the ability to inhibit virus entry and viral assembly, bind to spike proteins, membrane proteins, and block viral replications and enzymes. The efficacy of traditional medicinal plants in the terms of COVID-19 management can be evaluated by in vitro, in vivo as well as different in silico techniques (molecular docking, molecular dynamics simulations, machine learning, etc.) which have been applied extensively to the quest and design of effective biotherapeutics rapidly. Other advances in traditional phytomedicines against COVID-19 are controlled clinical trials, and notably the roles in the gut microbiome. Targeting the gut microbiome via medicinal plants as prebiotics is also found to be an alternative and potential strategy in the search for a COVID-19 combat strategy.

Conclusions

Since medicinal plants are the sources of modern biotherapeutics development, it is essential to build collaborations among ethnobotanists, scientists, and technologists toward developing the most efficient and the safest adjuvant therapeutics against the pandemic of the twenty-first century, COVID-19.