Model studies of the influence lectin-containing extracts medicinal plants St. John's wort (Hypericum perforatum L.), common yarrow (Achillea millefolium marigold (Calendula officinalis L.) and dwarf evergreen (Helichrysum arenarium (L.) Moench.) on growth development wheat, oat, barley rye at beginning their ontogenesis. They testify to specificity action in relation model objects, which is pr...

Ongoing studies have developed strategies for identifying key bioactive compounds and chemical profiles in Echinacea with the goal of improving its human health benefits. Antiviral and antiinflammatory-antipain assays have targeted various classes of chemicals responsible for these activities. Analysis of polar fractions of E. purpurea extracts showed the presence of antiviral activity, with ev...

Background: Purple coneflower (Echinacea purpurea L.) is one of the most important medicinal plants. Hairy root culture of Echinace, represent a valuable alternative to field cultivation for the production of bioactive secondary metabolites. Objective: The present study investigates the effects of KNO3, CaCl2 and MgSO4 concentrations on growth and the biosynthesis of cichoric acid in Echinacea...

Fluorescence microscopy was used to determine the l ocation of Bglucans in sorghum. Sections from three genetically different sorghum cultivars were st ained with Calcofluor or Congo Red , fluorochromes which have been reported to react with 13-glucans. Autofluorescence, indicative of ferulic acid in other cereals, was observed in untreated sections. When stained sections were treated with endo...

Phenolic extract of leaves of Basilicum polystachyon (L) Moench was tested for in vitro antimicrobial activity against five bacteria (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis, Micrococcus leuteus) and three fungi (Fusarium oxysporum, Aspergillus niger, Helminthosporium oryzae). Efficacy of organic solvents, methanol and ethanol, as agents for extraction...

Digitalis purpurea (D. purpurea) is one of the most important medicinal plants and is well known in the treatment of heart failure because of the cardiac glycosides that are its main active compounds. However, in the absence of strand specific sequencing information, the post-transcriptional mechanism of gene regulation in D. purpurea thus far remains unknown. In this study, a strand-specific R...

A oxidação afeta o crescimento in vitro, em função da liberação de compostos fenólicos, resultando no escurecimento dos tecidos e, por consequência, na morte explantes e plantas. Diante disso, este trabalho teve como objetivo estudar efeito do ácido ascórbico polivinilpirrolidona (PVP) cultivo vitro inhame, visando a redução ou eliminação otimização genótipos D. alata var. purpurea (Roxb.) A. P...