1-20 OF 82 RESULTS FOR

carotene

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 01 June 2003
Clays and Clay Minerals (2003) 51 (3): 327–333.
...George E. Christidis; Sotiria Kosiari Abstract The mechanism of decolorization of crude maize and sunflower oils was studied by means of adsorption of β-carotene by a low-grade bentonite, containing mixed-layered illite-smectite. Decolorization depends on temperature and the time required...
FIGURES | View All (4)
Image
Spectra of a beta-<b>carotene</b> molecule as present in two species of bacteria (...
in > Elements
Published: 01 April 2020
Figure 3. Spectra of a beta-carotene molecule as present in two species of bacteria ( Halobacterium salinarum and Salinibacter ruber ). Spectra collected with a portable, miniaturized Raman spectrometer using 532 nm laser excitation. ( A ) and ( C ) show spectra of concentrated pellets
Image
Kinetic curves of adsorption of β-<b>carotene</b> by acid-activated Cyprus bentoni...
Published: 01 June 2003
Figure 1. Kinetic curves of adsorption of β-carotene by acid-activated Cyprus bentonite: (a) maize oil; (b) sunflower oil.
Image
ln ( C&#x2F;C  o )  vs.  time (s) curves for adsorption of β-<b>carotene</b>: (a) maize...
Published: 01 June 2003
Figure 2. ln ( C/C o ) vs. time (s) curves for adsorption of β-carotene: (a) maize oil, (b) sunflower oil. C o = initial concentration of β-carotene at t = 0, C = concentration of β-carotene at time t.
Journal Article
Journal: Clay Minerals
Published: 01 December 2015
Clay Minerals (2015) 50 (5): 639–648.
... of acid-activated sepiolite used, were investigated and the optimum conditions, where chlorophyll, β-carotene, free fatty acid and peroxide were at their minimum levels, were determined for bleaching of canola oil by applying response surface methodology (RSM). Optimum bleaching conditions were obtained...
FIGURES | View All (5)
Journal Article
Journal: PALAIOS
Published: 05 December 2017
PALAIOS (2017) 32 (12): 725–738.
.... Textures were permineralized in all temperature regimes with phases that included mixed silicates, Na-carbonate, clays, gypsum-anhydrite, pyrrhotite, anatase, akaganeite, magnetite, natrojarosite, and ankerite. Pigments including chlorophyll, β-carotene, and scytonemin were identified in the lower...
FIGURES | View All (7)
Journal Article
Published: 01 July 2015
Russ. Geol. Geophys. (2015) 56 (7): 1055–1064.
... inherited fragments of lipids synthesized by living organisms, including aliphatic fat acids, both free or bounded into glycerol esters, i.e., animal or vegetable fats. It is shown that vegetable pigments (carotenes and xanthophylls) play a crucial role in the formation of monocyclic structures (including...
FIGURES
Journal Article
Published: 01 August 1999
American Mineralogist (1999) 84 (7-8): 997–1008.
... silicone implants: calcite, apatite, starch, lipid, and beta -carotene. We also spectroscopically identified silicone (only in breast tissue from patients recognized to have had ruptured implants) and paraffin (only in one sample that had been embedded in paraffin and subsequently "deparaffinized...
Series: AAPG Memoir, AAPG Memoir
Published: 01 January 1974
DOI: 10.1306/M20377C14
EISBN: 9781629812151
... molecular ions, and major fragments at 287, 271, 316, and 229 amu. On the basis of gas chromatography, sterols totaled as much as 2,500 μg/g. A variety of carotenoid compounds was present in substantially lower abundances—about 40 μg/g—and the principal pigment apparently was β-carotene. Perylene appeared...
Image
Typical m/z 125 fragmentogram for oils containing the biomarker     β    -c...
Published: 01 November 2015
Figure 6 Typical m/z 125 fragmentogram for oils containing the biomarker β -carotene.
Image
Freundlich isotherms (a) and logarithmic plots of the isotherms (b) of the ...
Published: 01 June 2003
Figure 4. Freundlich isotherms (a) and logarithmic plots of the isotherms (b) of the adsorption of β-carotene from maize oil.
Image
Effect of interaction between sepiolite content and bleaching temperature o...
Published: 01 December 2015
Fig. 5. Effect of interaction between sepiolite content and bleaching temperature on the adsorption of β-carotene: (a) 3D diagram, (b) 2D contour diagram.
Image
Black and white and color photomicrographs of Dunaliella cells in fluid inc...
in > Geology
Published: 01 December 2009
Figure 3 Black and white and color photomicrographs of Dunaliella cells in fluid inclusions in halite. A: Dunaliella cells (white arrows) and prokaryote cells (black arrows) from 17.8 m (34 k.y. old). Not all prokaryote cells are labeled with arrows. β-carotene crystals cover one Dunaliella cell
Image
Arrhenius plots for maize and sunflower oil. k1 and k2 correspond to the fa...
Published: 01 June 2003
Figure 3. Arrhenius plots for maize and sunflower oil. k1 and k2 correspond to the fast and slow adsorption stages, respectively, of β-carotene from maize oil. Activation energy is calculated from the slopes of the straight lines.
Image
Effect of acid-activated sepiolite dosage (a) and bleaching temperature (b)...
Published: 01 December 2015
Fig. 4. Effect of acid-activated sepiolite dosage (a) and bleaching temperature (b) on the adsorption of β-carotene from canola oil. The trendlines were drawn using the software Design Expert (v. 7.1.6) and are based on three levels of independent factors.
Image
Micro Raman spectroscopy of ilmenite (FeTiO 3 ) grain entrained in biomat a...
in > PALAIOS
Published: 05 December 2017
-carotene (green). C ) Spectra for rutile showing diagnostic peaks at 441 and 612 cm −1 . D ) Spectra for anatase showing diagnostic peaks at 149, 399, 515, 642 cm −1 . E ) Spectra for β -carotene with diagnostic peaks at 1009, 1158, 1515 cm −1 .
Image
Oil–source correlation reflected by different biomarker parameters ( , crud...
Published: 17 August 2015
Fig. 10. Oil–source correlation reflected by different biomarker parameters ( , crude oils from tuffaceous reservoirs of the second member of the Tiaohu Formation; , mudstones in the Lucaogou Formation; , mudstones in the second member of the Tiaohu Formation). ( a ) β-carotene/(Pr + Ph
Image
Oil–source correlation reflected by different biomarker parameters ( , crud...
Published: 17 August 2015
Fig. 10. Oil–source correlation reflected by different biomarker parameters ( , crude oils from tuffaceous reservoirs of the second member of the Tiaohu Formation; , mudstones in the Lucaogou Formation; , mudstones in the second member of the Tiaohu Formation). ( a ) β-carotene/(Pr + Ph
Image
Oil–source correlation reflected by different biomarker parameters ( , crud...
Published: 17 August 2015
Fig. 10. Oil–source correlation reflected by different biomarker parameters ( , crude oils from tuffaceous reservoirs of the second member of the Tiaohu Formation; , mudstones in the Lucaogou Formation; , mudstones in the second member of the Tiaohu Formation). ( a ) β-carotene/(Pr + Ph
Image
Oil–source correlation reflected by different biomarker parameters ( , crud...
Published: 17 August 2015
Fig. 10. Oil–source correlation reflected by different biomarker parameters ( , crude oils from tuffaceous reservoirs of the second member of the Tiaohu Formation; , mudstones in the Lucaogou Formation; , mudstones in the second member of the Tiaohu Formation). ( a ) β-carotene/(Pr + Ph