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Molecules

Title:		Comparison of Different Volatile Extraction Methods for the Identification of Fishy Off-Odor in Fish By-Products
Author(s):		Zhang Y; Tang L; Zhang Y; Song H; Raza A; Pan W; Gong L; Jiang C;
Address:		"Laboratory of Molecular Sensory Science, Beijing Technology and Business University, Beijing 100048, China. Hunan Province Jiapinjiawei Biotechnology Co., Ltd, Changde 415401, China. Wuzhou Testing Co., Ltd, Jining 273200, China"
Journal Title:		Molecules
Year:		2022
Volume:		20220921
Issue:		19
Page Number:		-
DOI:		10.3390/molecules27196177
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"This study was conducted to analyze volatile odor compounds and key odor-active compounds in the fish soup using fish scarp and bone. Five extraction methods, including solid-phase microextraction (SPME), dynamic headspace sampling (DHS), solvent-assisted flavor evaporation (SAFE), stir bar sorptive extraction (SBSE), liquid-liquid extraction (LLE), were compared and SPME was finally selected as the best extraction method for further study. The volatile odor compounds were analyzed by gas chromatography-olfactometry-mass spectrometry (GC-O-MS) and comprehensive two-dimensional gas chromatography-olfactometry-mass spectrometry (GC x GC-O-MS) techniques, and the key odor-active compounds were identified via aroma extract dilution analysis (AEDA) and relative odor activity value (r-OAV) calculation. A total of 38 volatile compounds were identified by GC-O-MS, among which 10 were declared as odor-active compounds. Whereas 39 volatile compounds were identified by GC x GC-O-MS, among which 12 were declared as odor-active compounds. The study results revealed that 1-octen-3-one, 2-pentylfuran, (E)-2-octenal, 1-octen-3-one, hexanal, 1-octen-3-ol, 6-methylhept-5-en-2-one, (E,Z)-2,6-nondienal and 2-ethyl-3,5-dimethylpyrazine were the key odor-active compounds in the fish soup"
Keywords:		Animals Ketones *Odorants/analysis Olfactometry/methods Plant Extracts Solvents *Volatile Organic Compounds/analysis Aeda GC x GC-O-MS Gc-o-ms fish scraps fish soup r-OAV;
Notes:		"MedlineZhang, Yuanyuan Tang, Long Zhang, Yu Song, Huanlu Raza, Ali Pan, Wenqing Gong, Lin Jiang, Can eng No number/Hunan Rice Research Institute/ Switzerland 2022/10/15 Molecules. 2022 Sep 21; 27(19):6177. doi: 10.3390/molecules27196177"