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. 2023 Sep 7;12(18):3362. doi: 10.3390/foods12183362

Figure 1.

Figure 1

(A) Average Vis-NIR absorbance spectra (MSC correction; 400–2500 nm) for all wax samples studied; (B) Average first derivative spectra using the Savitzky–Golay method with a window of 11 moving points and a third-order polynomial for all wax samples studied.