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 ...
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...
a. Reflection b. Wavelength c. Colors d. Electricity True or False: Carotenoid does not absorb colors with wavelengths above about 550 nm. Which of the following statements is incorrect? a. Pigments absorb light of certain wavelengths only. b. Many accessory pigments are multi...
Light source definition: D65 daylight equivalent Geometry: Diffuse/8° Wavelengths: scan 350 to 1050 nm in 5 nm optical resolution Sample measurement area diameter: 19 mm (large) Calibration mode: Transmission (for soft drink) and reflection (for margarine)/white tile ...
To strongly reduce the reflection and scattering by the inhomogeneities of the wing scales and membrane, the wing pieces were 13 Journal of Comparative Physiology A (2024) 210:371–380 positioned at a microscope slide, embedded in immersion oil (refractive index 1.515), and then covered by a ...
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 ...
such as the presence of light, oxygen, and heat, the use of complexation and encapsulation techniques with biopolymers is in demand. Moreover, some functional properties can be achieved by using natural pigments-biopolymers complexes in food matrices. The complexation and encapsulation of natural pigm...
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 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...
Dermal carotenoids can also be measured with reflection spectroscopy (RS) [47,56]. For this purpose, the LED-based miniaturized spectroscopic system (MSS) was developed. A LED emitted bright spectrum in the range between 440 and 490 nm was sufficient to overlap the absorption of carotenoids. Th...