Orlando Vieira de Sousa

Chemical Composition and Antibacterial Activity of Essential Oils from Ocimum Species: Potential β-Lactamase Inhibition Revealed by Molecular Docking

Flávia Costa de Moraes, Julianna Oliveira de Lucas Xavier & Orlando Vieira de Sousa · European Journal of Medicinal Plants · 2026

Aims: This study investigated the chemical composition and antibacterial properties of essential oils from three Ocimum species (O. americanum, O. gratissimum, and O. selloi) and analysed the molecular interactions of their main compounds with β-lactamase. Study Design: This expl...

Open access Research Article 10.9734/ejmp/2026/v37i51383

Soursop (Annona muricata L.) Fruit Peels as Source of Phenolic Constituents and Annonacin with Biological Activities

Glauciemar Del-Vechio Vieira, Julianna Oliveira de Lucas Xavier, Ana Lúcia dos Santos de Matos Araújo, Jéssica Leiras Mota Conegundes, Elita Scio Fontes & Orlando Vieira de Sousa · European Journal of Medicinal Plants · 2022

Aims: In this study, chemical constituents and biological activities of the Annona muricata L. fruit peels were evaluated using methanol extract (MEAM) and hexane (HFAM), dichloromethane (DFAM), ethyl acetate (EFAM), and butanol (BFAM) fractions. Place and Duration of Study: All...

Open access Research Article 10.9734/ejmp/2022/v33i730480