This decrease is lower in the basal than in the apical regions of a leaf, which results in an inverted polarity of the capability to accumulate chlorophyll If the seedlings are grown under continuous white light applied from four different directions, the high capability of greening observed in ...
Explain what causes Tyndall effect, state one example of the effect. How and why it is possible to separate carotenoids from chlorophylls, using pigment molecule polarity as the basis for your rationale? What substances can affect water's boiling point?
R. Wasielewski, Solvent polarity dependent photophysics of a fixed-distance, symmetric chlorophyll dimer. A model of the special pair in photosynthetic reaction centers, Isr. J. Chem., 1988, 28, 193-203.Johnson, D., Svec, W. & Wasielewski, M. Solvent polarity dependent photophysics of a ...
and their specific (V-type) fluorescence suggests the presence of plant pigment residues. The extraction procedure is suggested for further studies as a simple but effective way to decrease the structural complexity of a humic material enabling its detail and more conclusive compositional ...
When considering the kinetics of extraction using ethanol as a modifier, no variations in selectivity can be noted between 30 min and 3 h [3,27,28]. Moreover, the extraction kinetics of catechins, caffeine, and chlorophylls were very similar, regarding pressure, temperature, and modifier ...