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. 2021 Oct 11;6(42):27781–27790. doi: 10.1021/acsomega.1c03285

Figure 9.

Figure 9

Image of the novel composite drug tablets and their typical raw Raman spectra collected from the tablet surface, indicating the presence of carotenoids (right) under 532 nm laser excitation and calcium carbonate (left), under 785 nm.