determine an in vivo absorption spectrum of the carotenoids and compare it to ex vivo absorption spectra.Material and methods: The first author of the presented study consumed carrot juice over a period of several weeks and during this time regularly performed optical reflection measurements on his ...
The standard D65 illuminant and remove specular reflection mode were selected, and the samples were measured perpendicular to the UltraScan VIS lens. Each sample skin color, three different positions of the peel sample were analyzed. Six samples per group were measured to minimize the experimental ...
Carotenoids are found in fruits, vegetables, roots, plants and microorganisms including microalgae, other eukaryotes (yeasts and fungi) and genera of the Archaea and Bacteria domains. Extremophilic microorganisms are sources of bioproducts including carotenoids with special properties. In this sense, carot...
these compounds have been widely used as color additives as an alternative to artificial colorants. However, since these pigments are unstable under certain conditions, such as the presence of light, oxygen, and heat, the use of complexation ...
The carotenoid profile of an individual's blood is a reflection of the carotenoid composition of that individual's diet. Normative intake data and plasma concentrations from the Third National Health and Nutrition Examination Survey in the United States (NHANES III) have been made available for ...
The infrared spectra of thin solid films of carotenoids on supports were investigated using multiple attenuated total reflection (ATR) spectroscopy technique. The specimens were obtained by the evaporation of 1 or 2 drops of appropriate solution of carotenoid on the both sides of quickly rotating ATR...
Little is known about the accumulation of carotenoids in skin and their distribution in various skin areas. The dermal levels of carotenoids can be measured noninvasively by reflection photometry, which was used to follow 尾-carotene levels in skin after supplementation....