title: Characterization of volatile components and odor-active compounds in the oil of edible mushroom Boletopsis leucomelas.
abstract: The volatile oil from Boletopsis leucomelas (Pers.) Fayod was extracted by hydrodistillation with diethylether, and the volatile components of the oil were analyzed by gas chromatography-mass spectrometry. The oil contained 86 components, representing 87.5% of the total oil. The main components of the oil were linoleic acid (15.0%), phenylacetaldehyde (11.2%), and palmitic acid (9.4%). Furthermore, sulfur-containing compounds including 3-thiophenecarboxaldehyde, 2-acetylthiazole, S-methyl methanethiosulfonate, and benzothiazole were detected using gas chromatography-pulsed flame photometric detection. The odor components were evaluated by the odor activity value, and aroma extract dilution analysis was performed through gas chromatography-olfactometry analysis. The oil had a mushroom-like, fatty, and burnt odor. The main components contributing to the mushroom-like and fatty odor were hexanal, nonanal, 1-octen-3-ol, and (2E)-nonenal, while the burnt odor was due to furfuryl alcohol, benzaldehyde, 5-methyl furfural, 2,3,5-trimethylpyrazine, 2-acethylthiazole, and indole.
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University.
authors.forename: Sota
authors.initials: S
authors.lastname: Nosaka
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Miyazawa
mesh_terms: D000079:Acetaldehyde / Q000031:analogs & derivatives / Q000302:isolation & purification; D000363:Agaricales / Q000737:chemistry*; D000447:Aldehydes / Q000302:isolation & purification; D001547:Benzaldehydes / Q000302:isolation & purification; D002849:Chromatography, Gas; D005663:Furans / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry; D007211:Indoles / Q000302:isolation & purification; D019787:Linoleic Acid / Q000302:isolation & purification; D000442:Octanols / Q000302:isolation & purification; D009812:Odorants / Q000032:analysis*; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification*; D064367:Olfactometry; D019308:Palmitic Acid / Q000302:isolation & purification; D010783:Photometry; D010938:Plant Oils / Q000737:chemistry* / Q000302:isolation & purification*; D010945:Plants, Edible / Q000737:chemistry*; D013457:Sulfur Compounds / Q000302:isolation & purification; D055549:Volatile Organic Compounds / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D000447:Aldehydes; D001547:Benzaldehydes; D005663:Furans; D007211:Indoles; D000442:Octanols; D009822:Oils, Volatile; D010938:Plant Oils; D013457:Sulfur Compounds; D055549:Volatile Organic Compounds; C008664:nonanal; D019308:Palmitic Acid; C030374:indole; C010463:n-hexanal; D019787:Linoleic Acid; C012986:furfuryl alcohol; D000079:Acetaldehyde; C032175:benzaldehyde; C013192:phenylacetaldehyde; C038844:1-octen-3-ol