Analysis and Comparison of Volatile Compounds in Stropharia Rugosoannulata and Tricholoma Lobayense by Headspace Solid-Phase Microextraction-Gas Chromatography-Mass Spectrometry

The volatile components of Stropharia rugosoannulata and Tricholoma lobayense were analyzed by mass spectrometry, and the relative contents of each component were determined by the internal standard method. In Stropharia rugosoannulata, 58 volatile components were identified, including 10 alcohols, 14 esters, 9 aldehydes, 5 ketones, 1 phenol, 3 alkanes, 4 amines, 5 acids, 1 furan, 1 pyrazine, 1 olefin, 1 oxime, 1 pyrazole, and 2 other components. Among them, the most abundant volatile component was hexanal (1655.40 ng/g), followed by pentanoic acid (1503.10 ng/g) and phenylethyl alcohol (1215.94 ng/g). In Tricholoma lobayense, 68 volatile components were identified, including 17 aldehydes, 11 ketones, 8 acids, 10 esters, 5 alcohols, 1 phenol, 2 furans, 4 alkanes, 1 alkene, 1 oxime, 1 pyrazole, 1 amine, and 6 other components. Among them, the most abundant volatile component was benzaldehyde (2190.67 ng/g), followed by hexanal (1708.81 ng/g) and furan, 2-pentyl- (838.45 ng/g). There were 21 common volatile components between the two different edible fungi, including 7 aldehydes, 5 esters, 3 ketones, 2 alcohols, 2 acids, 1 oxime, and 1 furan.