Fig. 3From: Unbiased profiling of volatile organic compounds in the headspace of Allium plants using an in-tube extraction deviceProportion of sulfur-containing peaks in the 52 annotated peaks, including two artifacts (Si-containing peaks), in the HS of Allium plants. The proportion was calculated by counting the number of annotated compounds that consisted of CHOS, CHO, CH, or CHOSiBack to article page