Figure 6
From: Facile isolation and analysis of sporopollenin exine from bee pollen
NIR FT-Raman spectra of sunflower (mark A, red curve) and rape (mark B, blue curve) sporopollenin P1-purified by Soxhlet extractions and P2-purified by TBPH. At 2910 cm−1 a strong aliphatic (mostly CH2 stretching), while around 1600 cm−1 aromatic bands are located. Note the difference in aliphatic to aromatic ratios for the two samples.
