Polymyxin combined with essential oil: one alternative strategy for combating polymyxin-resistant .

Multidrug-resistant infections present a critical public health due to scarce treatment options and high mortality. L. essential oil (O.

Synergy between amikacin and Protium heptaphyllum essential oil against polymyxin resistance Klebsiella pneumoniae.

Aims: We investigated the chemical composition and the in vitro and in vivo antibacterial effects of Protium heptaphyllum essential oil (PHEO) alone and in combination with antibiotics against polymyxin-resistant Klebsiella pneumoniae isolates.

Methods And Results: Hydrodistillation was used to obtain PHEO, and gas chromatography coupled with mass spectrometry revealed α-pinene, δ-3-carene, and β-pinene as major components present in PHEO. Minimum inhibitory concentration was determined using the broth microdilution technique and ranged from 256 to 512 µg ml-1.

Genetic and chemodiversity in native populations of Schinus terebinthifolia Raddi along the Brazilian Atlantic forest.

Schinus terebinthifolia is a species native to different ecoregions in the Brazilian Atlantic Forest. The plant is listed on the National Relation of Medicinal Plants and recommended as phytomedicine, however while extractive exploitation prevails as the main route of raw material a significant variation of compounds will be detected. To assure the expansion of productive chain it is important to start by studying population diversity and chemical variations.

Pharmaceuticals residues and xenobiotics contaminants: Occurrence, analytical techniques and sustainable alternatives for wastewater treatment.

Emerging contaminants are increasingly present in the environment, and their appearance on both the environment and health of living beings are still poorly understood by society. Conventional sewage treatment facilities that are under validity and were designed years ago are not developed to remove pharmaceutical compounds, their main focus is organic and bacteriological removal. Pharmaceutical residues are associated directly with quantitative production aspects as well as inadequate waste management policies.

A New Salt-Tolerant Thermostable Cellulase from a Marine sp. Strain.

A salt-tolerant cellulase secreted by a marine sp. SR22 strain with wide resistance to temperature and pH was purified and characterized. Its approximate mass was 37 kDa.

The rescue of botanical insecticides: A bioinspiration for new niches and needs.

Crop protection is the basis of plant production and food security. Additionally, there are many efforts focused on increasing defensive mechanisms in order to avoid the damaging effects of insects, which still represent significant losses worldwide. Plants have naturally evolved different mechanisms to discourage herbivory, including chemical barriers such as the induction of defensive proteins and secondary metabolites, some of which have a historical link with bio-farming practices and others that are yet to be used.