Effects of four drying methods on <i>Amomum villosum</i> Lour. ‘Guiyan1’ volatile organic compounds analyzed <i>via</i> headspace solid phase microextraction and gas chromatography-mass spectrometry coupled with OPLS-DA

Abstract

HS-SPME-GC/MS coupled with OPLS-DA, 133 kinds of VOCs, mainly composed of hydrocarbons, esters, and alcohols, were identified. The differences in 'Guiyan1' processed by freeze-drying and the other three drying methods were the most significant and easily distinguishable. The main VOCs in the dried samples were bornyl acetate and 2-bornanone, with the largest increase in 2-bornanone and the largest decrease in bicyclogermacrene. The obtained data provided guidance for optimizing the processing and storage of 'Guiyan1'.