Research Article

Near-Infrared Spectroscopy as a Process Analytical Technology Tool for Monitoring the Steaming Process of Gastrodiae rhizoma with Multiparameters and Chemometrics

Figure 1

The representative HPLC chromatogram of gastrodin (1), p-hydroxybenzyl alcohol (2), parishin B (3), and parishin A (4) in Gastrodiae rhizoma steaming samples (A) and standard solution (B).
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(b)