The removal of plant pigments such as ?-carotene is an aspect vegetable oil processing often desired by the food and pharmaceutical industries. Adsorption to acid-activated clay (AAC) a well-established method for purification. Despite this, mechanism not well understood. UPLC-MS/MS analysis surface compounds extracted from ?-carotene-AAC (BC-AAC) complexes show that AAC acts oxidiser. Oxidatio...

Carotenoid-based plumage coloration plays a critical role for both inter- and intrasexual communication. Habitat and diet during molt can have important consequences for the development of the ornamental signals used in these contexts. When molt occurs away from the breeding grounds (e.g., pre-alternate molt on the wintering grounds, or stopover molt), discerning the influence of habitat and di...

thin films of binary bi 0 -teo and bi 0 -v 0 systems were prepared by the thermal co-evaporation technique in a vacuum at room temperature. the optical absorption edge of these systems are studied in the wavelength of 200-800 nm using a perkin-elmer uv/vis spectrophotometer. it is found that the value of n=3/2 in the davis-mott equation is best fitted for the fundamental absorption edge for the...

OBJECTIVES Antioxidant nutrients like carotenoids, tocopherols and vitamin C have been suggested to protect against allergic rhinitis and allergic sensitisation but scientific evidence is scarce. The aims of the study were to measure the plasma concentration of six carotenoids, alpha- and gamma-tocopherol and vitamin C as biomarkers of the intake, absorption and subsequent metabolism of these n...

The major carotenoid pigment of a psychrotrophic Micrococcus roseus strain was purified to homogeneity from methanol extracts of dried cells by reverse-phase liquid chromatography and was designated P-3. On the basis of the UV-visible, infrared, mass, and 'H nuclear magnetic resonance spectra of P-3, it was identified as bisdehydro-,-carotene-2-carboxylic acid. The pigment interacted with synth...

NatuRose algae meal is safe natural source of astaxanthin derived from a unique strain of the microalgae, Haematococcus pluvialis. The majority of the NatuRose carotenoid fraction is astaxanthin, with about 15% of the remaining fraction consisting of canthaxanthin, lutein and beta-carotene. NatuRose is spray dried and formulated into a fine dark red powder and is currently used worldwide as a c...

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