Cineole biodegradation: molecular cloning, expression and characterisation of (1R)-6beta-hydroxycineole dehydrogenase from Citrobacter braakii.

The first steps in the biodegradation of 1,8-cineole involve the introduction of an alcohol and its subsequent oxidation to a ketone. In Citrobacter braakii, cytochrome P450(cin) has previously been demonstrated to perform the first oxidation to produce (1R)-6beta-hydroxycineole. In this study, we have cloned cinD from C.

Chlamydomonas as a "new" organism for biodiesel production.

The production of biodiesel from a naturally isolated strain of Chlamydomonas was investigated. The microalgal strain was isolated from the rice paddy-field soil samples during a screening program. The identification was done using physiological and molecular approaches.

Quantum dot: magic nanoparticle for imaging, detection and targeting.

Quantum dots (QDs) are one of the nanoparticles that use in Imaging, Detection and Targeting. Quantum dots are nanometer-size luminescent semiconductor crystals and have unique chemical and physical properties due to their size and their highly compact structure. They emit different wavelengths over a broad range of the light spectrum from visible to infrared, depending on their size and chemical composi tion.

Antioxidant activity, phenol and flavonoid contents of 13 citrus species peels and tissues.

Methanolic extracts of 13 commercially available citrus spp., peels and tissues growing in Iran were investigated for their antioxidant activity by DPPH method. IC50 for antioxidant activity ranged from 0.

Characterization of hydrocortisone biometabolites and 18S rRNA gene in Chlamydomonas reinhardtii cultures.

A unicellular microalga, Chlamydomonas reinhardtii, was isolated from rice paddy-field soil and water samples and used in the biotransformation of hydrocortisone (1). This strain has not been previously tested for steroid bioconversion. Fermentation was carried out in BG-11 medium supplemented with 0.

Medicinal smokes.

All through time, humans have used smoke of medicinal plants to cure illness. To the best of our knowledge, the ethnopharmacological aspects of natural products' smoke for therapy and health care have not been studied. Mono- and multi-ingredient herbal and non-herbal remedies administered as smoke from 50 countries across the 5 continents are reviewed.

Biotransformation of hydrocortisone by a natural isolate of Nostoc muscorum.

Hydrocortisone was converted in the culture of an isolated strain of the cyanobacterium Nostoc muscorum PTCC 1636 into some androstane and pregnane derivatives. The microorganism was, isolated during a screening program from soil samples collected from paddy fields of north of Iran. The bioproducts obtained were purified using chromatographic methods and identified as 11beta-hydroxytestosterone, 11beta-hydroxyandrost-4-en-3,17-dione and 11beta,17alpha,20beta,21-tetrahydroxypregn-4-en-3-one on the basis of their spectroscopic features.