Carotenoids: New Applications of “Old” Pigments

Carotenoids and their isomers: color pigments in fruits and vegetables.

Fruits and vegetables are colorful pigment-containing food sources. Owing to their nutritional benefits and phytochemicals, they are considered as 'functional food ingredients'. Carotenoids are some of the most vital colored phytochemicals, occurring as all-trans and cis-isomers, and accounting for the brilliant colors of a variety of fruits and vegetables. Carotenoids extensively studied in th...

tricyclic antidepressants: old drugs-new applications

Plant carotenoids: pigments for photoprotection, visual attraction, and human health.

Plant carotenoids are red, orange, and yellow lipid-soluble pigments found embedded in the membranes of chloroplasts and chromoplasts. Their color is masked by chlorophyll in photosynthetic tissues, but in late stages of plant development these pigments contribute to the bright colors of many flowers and fruits and the carrot root. Carotenoids protect photosynthetic organisms against potentiall...

Revitalized old technology spurs new interest, applications

August 01, 2007 | Musculoskeletal Imaging [1], Vendors [2] Although the roots of traditional geometric x-ray tomography date back to the 1930s, the technique was not practical at that time because image receptors could not provide large-area dynamic scanning. The technique, renamed tomosynthesis in the 1970s, acquired only one imaging section at a time, requiring additional time and radiation d...

Tricyclic Antidepressants: Old Drugs-New Applications

With great interest I have read an excellent article " Evaluation of the efficacy of intrathecal injection of amitripty-line and doxepin in spinal anesthesia in comparison with bupivacaine in rats " , published in your respected journal. The authors present and elaborate a very interesting subject of the application of tricyclic antidepressants as a local anesthetic. I totally agree with the au...