Characterization of Volatile Flavor Compounds in Supercritical Fluid Separated and Identified in Gurum (<i>Citrulluslanatus</i> Var. <i>colocynthoide</i>) Seed Oil Using HSME and GC–MS

Abstract

In this study, the volatile compound profiles of gurum seed oil were determined using two methods: supercritical CO2 extraction (SFE) and the screw press process (SPP). For volatile compounds extraction and identification, headspace solid-phase micro-extraction (HS-SPME) and GC–MS were used, respectively. A total number of 56 volatile compounds were revealed and identified in oil extracted by SFE, while only 40 compounds were detected in extracted oil by SPP. Acids, aldehydes, esters, ketones, furans, and other components were present in the highest ratio in oil extracted by SFE. In contrast, alcohols and alkenes were found in the highest proportion in oil extracted by SPP. In this study, it was observed that SFE showed an increase in the amounts of volatile compounds and favorably impacted the aroma of gurum seed oil. The results reveal that different extraction methods significantly impact the volatile components of gurum seed oil, and this study can help evaluate the quality of the oil extracted from gurum seeds.

Keywords

• gurum seed oil
• supercritical CO₂ extraction
• screw press process
• volatile compounds
• HS-SPME
• GC–MS