Imed Koubaa

ORCID: 0000-0001-6414-6162
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About
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Research Areas
  • Essential Oils and Antimicrobial Activity
  • Phytochemicals and Antioxidant Activities
  • Sesquiterpenes and Asteraceae Studies
  • Cynara cardunculus studies
  • Phytochemistry and Biological Activities
  • Insect Pest Control Strategies
  • Proteoglycans and glycosaminoglycans research
  • Natural Antidiabetic Agents Studies
  • Natural product bioactivities and synthesis
  • Cholesterol and Lipid Metabolism
  • Agricultural Practices and Plant Genetics
  • Ethnobotanical and Medicinal Plants Studies
  • Enzyme Catalysis and Immobilization
  • Edible Oils Quality and Analysis
  • Phytochemistry and biological activities of Ficus species
  • Biochemical Analysis and Sensing Techniques
  • Marine Sponges and Natural Products
  • Polysaccharides Composition and Applications
  • Pomegranate: compositions and health benefits
  • Meat and Animal Product Quality
  • Helminth infection and control
  • Botanical Studies and Applications
  • Bioactive Compounds and Antitumor Agents
  • Microbial Natural Products and Biosynthesis
  • Plant-derived Lignans Synthesis and Bioactivity

University of Sfax
2013-2023

Laboratoire de Chimie
1999

Institut de Chimie des Substances Naturelles
1999

The phytochemical investigation of Thymelaea tartonraira leaves led to the isolation and characterization six compounds, including one new flavonoid glycoside identified as hypolaetin 8-O-β-D-galactopyranoside (4) along with five known daphnoretin (1), triumbelletin (2), genkwanin (3), tiliroside (5) yuankanin (6). Their structures were established based on spectroscopic methods, such UV, IR, NMR, HR-ESI-MS. Triumbelletin (2) isolated for first time from T. leaves. antioxidant property all...

10.1002/cbdv.202200944 article EN Chemistry & Biodiversity 2023-02-09

Chondroitin sulfate/dermatan sulfate (CS/DS) was extracted from Atlantic bluefin tuna (Thunnus thynnus) skin (SGAT) and purified characterized. SGAT characterized by acetate cellulose electrophoresis, FTIR spectroscopy, 13C NMR spectroscopy SAX-HPLC. According to the results obtained for specific chondroitinases (ABC AC) SAX-HPLC separation of generated unsaturated repeating disaccharides, polymer found contain a disaccharide monosulfated in positions 6 4 GalNAc disulfated disaccharides...

10.1039/c8ra06704j article EN cc-by-nc RSC Advances 2018-01-01

Context: The persistence of fascioliasis in many developing countries urges the search for simple, cheap, and effective substances. In this view, plants provide interesting molluscicidal activities thanks to secondary metabolites they produce. genus Solanum is known its potent effect on vector snails.Objective: activity elaeagnifolium Cav. (Solanaceae) seeds against Galba truncatula Müll. (Lymnaeidae), intermediate host Fasciola hepatica L. (Fasciolidae), was evaluated.Materials methods:...

10.3109/13880209.2015.1073332 article EN Pharmaceutical Biology 2015-10-01

Abstract In the course of phytochemical and chemotaxonomical investigations Cornulaca monacantha (Amaranthaceae), two new isoflavones, 3‐(2‐hydroxyphenyl)‐5,7‐dimethoxy‐6‐(methoxymethyl)‐4 H ‐1‐benzopyran‐4‐one ( 1 ) 7‐hydroxy‐3‐(4‐hydroxyphenyl)‐5‐methoxy‐6‐(methoxymethyl)‐4 2 were isolated from fresh aerial parts C. among with three known compounds named vanillic acid 3 ), N ‐ cis‐ feruloyltyramine 4 trans‐ 5 ). Their structures elucidated by means spectroscopic methods including one‐...

10.1002/cbdv.202000758 article EN Chemistry & Biodiversity 2020-11-09

The aim of this study was to screen various solvent extracts seeds Solanum elaeagnifolium display the phytochemical composition, total phenolic content, flavonoid content and antioxidant capacity in order find possible sources for future novel antioxidants food pharmaceutical formulations. Various were obtained by maceration. different determined Folin-Ciocalteu method, quantified using a method based on formation flavonoid–aluminium complex .The activity essayed through some vitro models...

10.13171/mjc.2.5.2014.05.01.22 article EN Mediterranean Journal of Chemistry 2013-12-29

For the first time, chemical constituents of two essential oils extracted by hydrodistillation from Drimia maritima flowers and bulbs were identified using analytical GC-MS analysis. Eugenol (41.23 %) carvacrol (27.29 most abundant compounds in while major components p-vinylguaicol (14.33 %), eugenol (8.49 (7.51 %). The antioxidant activity both was evaluated three methods DPPH, ABTS+. total capacity. results showed that exhibited a strong capacity compared to Trolox Vitamine E....

10.1080/0972060x.2020.1854869 article EN Journal of Essential Oil Bearing Plants 2020-09-02

10.1016/s0367-326x(02)00300-3 article EN Fitoterapia 2003-02-01

Lipid-based drug delivery systems are widely used for enhancing the bioavailability of poorly water-soluble drugs. However, following oral intake, lipid excipients often undergo gastrointestinal lipolysis, which drastically affects drugs solubility and bioavailability. That's why developing new resistant to digestion would be great interest. We studied here potential role unconventional Chinese star anise whole seedpod oil (CSAO) as an alternative multifunctional excipient. Pancreatic...

10.1016/j.heliyon.2021.e06717 article EN cc-by-nc-nd Heliyon 2021-04-01
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