title: Characteristic long-chain fatty acid of Pleurocybella porrigens.
abstract: As part of an investigation on the chemical constituents and contaminants of the basidiomycete Pleurocybella porrigens (Japanese name: Sugihiratake), we analyzed the UV-detected constituents of this mushroom using HPLC. One of the major UV peaks detected was isolated and identified as a-eleostearic acid, a long-chain fatty acid with a conjugated triene moiety, based on the results of spectroscopic methods. alpha-Eleostearic acid was concluded to be a characteristic fatty acid of P. porrigens, because it was not detected in eight other edible mushrooms examined. Free long-chain fatty acids in P. porrigens and other edible mushrooms were analyzed by HPLC after derivatization with acidic 2-nitrophenylhydrazine hydrochloride. Oleic acid was the main fatty acid in P. porrigens, and saturated long-chain fatty acids such as linoleic acid, palmitic acid, and stearic acid, together with a-eleostearic acid, were also detected.
authors.affiliation: National Institute of Health Sciences: 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Amakura
authors.forename: Kazunari
authors.initials: K
authors.lastname: Kondo
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Akiyama
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Ito
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Hatano
authors.forename: Takashi
authors.initials: T
authors.lastname: Yoshida
authors.forename: Tamio
authors.initials: T
authors.lastname: Maitani
mesh_terms: D000363:Agaricales / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005504:Food Analysis; D019787:Linoleic Acid / Q000032:analysis / Q000302:isolation & purification; D008042:Linolenic Acids / Q000032:analysis / Q000302:isolation & purification; D019301:Oleic Acid / Q000032:analysis / Q000302:isolation & purification*; D019308:Palmitic Acid / Q000032:analysis / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet; D013229:Stearic Acids / Q000032:analysis / Q000302:isolation & purification
chemical_list: D008042:Linolenic Acids; D013229:Stearic Acids; C004934:eleostearic acid; D019301:Oleic Acid; D019308:Palmitic Acid; C031183:stearic acid; D019787:Linoleic Acid