Raman Microimaging Using a Novel Multifiber-Based Device: A Feasibility Study on Pharmaceutical Tablets

Figure 4

Constructed images showing the distribution of methionine (a), glycine ((b) and (d)), and phenylalanine (c) within the tri-amino-acid pellet. The color code bars represent intensity variations (a.u.) of the respective vibrations.

(a) Methionine 720 cm⁻¹

(b) Glycine 892 cm⁻¹

(c) Phenylalanine 1003 cm⁻¹

(d) Glycine 1324 cm⁻¹