Effects of four drying methods on Lour. 'Guiyan1' volatile organic compounds analyzed headspace solid phase microextraction and gas chromatography-mass spectrometry coupled with OPLS-DA.

This paper analyzed the effects of four drying methods (heat pump drying, hot air drying, sun drying, and freeze drying) on the volatile organic compounds (VOCs) in fresh 'Guiyan1' Lour. separation, component differentiation, and overall variance analysis 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.