Results: 284

Extraction and separation of tea polyphenols and caffeine from tea leaves by mechanochemical pretreatment

Mechanochemical pretreatment (MCPT) was applied to the extraction and separation of tea polyphenols (TP) and caffeine from tea leaves. Tea leaves were treated by mechanical activation with presence of Na2CO3(MC) for 75 s. One gram of obtained powder was taken for extraction and s...

Antioxidant, antimicrobial and antiproliferative activities of alcoholic extracts from Piper aequale Vahl leaves

Piper is a large plant genus containing essential oils rich in mono and sesquiterpenes and other secondary metabolites showing different biological activities. Piper aequale, cordoncillo, is used in México for urinary and prostate ailments, suggesting a potential therapeutic effect against pro...

Propagación in vitrode Anredera vesicaria

Anredera vesicaria is a plant whit high anti-inflammatory activity. The work objective was to establish in vitro propagation of A. vesicaria. Nodal segments were used as explants and two disinfection times in 1% sodium hypochlorite (15 and 20 minutes) were evaluated during in vitro establishm...

Chemical composition, antioxidant and antimicrobial activities of Lepechinia rufocampii Epling & Mathias essential oil from the highlands of Ecuador

The chemical composition, antioxidant and antimicrobial activities of the essential oil from leaves and flowers of Lepechinia rufocampii Epling & Mathias were studied. GC-FID and GC-MS analyses allowed the identification and quantification of 122 constituents, representing ...

Myrtus communis leaves: source of bio - actives, traditional use, their biological properties, and prospects

Myrtus communis L., commonly known as true myrtle, is a medicinal plant native to the Mediterranean area. Since ancient times, the inhabitant s of this area have been using it for its cultural and medicinal properties. Because of the vast diversity of biomolecules in its aerial parts, ...

Croton stipulaceus Kunth, a native Mexican medicinal plant with antioxidant and anti-inflammatory activities

Leaves of Croton stipulaceuswere extracted (EHex, ECHCl3and EEtOH extracts) to assesstheir antioxidant potential, anti-inflammatory activity in murine models and acute toxicity. EEtOH showed the highest effect in DPPH (37.80% inhibition), FRAP (1065.00 ± 55.30 μmolFe2+) ...

Chemical composition, antioxidant and antimicrobial activities of essential oil from the aerial parts of Chuquiraga arcuataHarling grown in the highlands of Ecuador

Thechemical composition, antioxidant and antimicrobial activities of the essential oil from aerial parts (leaves and flowers) of Chuquiraga arcuataHarling grown in the Ecuadorian Andes were studied. One hundred and twenty-six compounds were identified in the essential oil...

Aceite esencial de hojas de Minthostachys mollis [HBK] Griseb. del Ecuador: extracción, composición química, capacidad antioxidante y actividad antimicrobiana

The aim of this study was to optimize by response surface design, the extraction of the leaf essential oil (EO) from Minthostachys mollis [HBK] Griseb., grown in Ecuador, using steam distillation. The factors used were extraction time (XTIE) of 60, 105 and 150 min and plan...

Automatic detection and classification of disease in citrus fruit and leaves using a customized CNN based model

India's commercial advancement and development depend heavily on agriculture. A common fruit grown in tropical settings is citrus. A professional judgment is required while analyzing an illness because different diseases have slight variati ons in their symptoms. In order to...

The infusion of Baccharis spicata (Lam. ) Baill (Asteraceae) has antiviral activity against hepatitis B virus without cytotoxic effects against several cell lines

Medicinal plants are used to cure diseases, and their replacement is frequent and affects public health. The genus Baccharis has representatives within the medicinal flora of Argentina, although the replacement of the species of this genus known under the vulgar name of "carqueja" by Bacc...