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J Food Sci

Title:		Characterization of important odorants in steamed male Chinese mitten crab (Eriocheir sinensis) using gas chromatography-mass spectrometry-olfactometry
Author(s):		Wu N; Gu S; Tao N; Wang X; Ji S;
Address:		"College of Food Science and Technology, Shanghai Ocean Univ, Nr. 999, Hucheng Huan Rd, Lingang New City, Shanghai, 201306, China"
Journal Title:		J Food Sci
Year:		2014
Volume:		20140624
Issue:		7
Page Number:		C1250 - C1259
DOI:		10.1111/1750-3841.12511
ISSN/ISBN:		1750-3841 (Electronic) 0022-1147 (Linking)
Abstract:		"Chinese mitten crab (Eriocheir sinensis) from Yangcheng Lake in Jiangsu Province is a popular species due to its unique pleasant aroma and intensive umami taste. In this study, odorants in steamed male E. sinensis were investigated using the headspace-monolithic material sorptive extraction technique coupled with gas chromatography-mass spectrometry-olfactometry (GC-MS-O). A total of 74 volatile compounds were found, and the results of the GC-MS-O analysis, combined with odor activity values, showed that trimethylamine (fishy, ammonia-like odor), (Z)-4-heptenal (mushroom-like odor), and benzaldehyde (paint-like odor) were the important odorants (IOs) in all 4 of the edible parts of steamed male E. sinensis. Furthermore, heptanal (mushroom-like odor) was common to the abdomen, claw, and leg meat but was not found as the IO in the gonad. The abdomen meat also contained 3-methylbutanal (vegetable-like, grassy odor), while 2 additional IOs were found in claw meat (2-methylbutanal, which has a mushroom odor and 3-ethyl-2,5-dimethylpyrazine, which has a chocolate-like, musty odor). Another IO (2-nonanone, chocolate-like odor) was also found in leg meat, while (E)-2-nonenal (green, fruity odor) was the IO found exclusively in the gonad"
Keywords:		Animals Brachyura/*chemistry *Cooking Gas Chromatography-Mass Spectrometry/*methods Male Odorants/*analysis Smell Taste Volatile Organic Compounds/*chemistry Eriocheir sinensis crab meat gas chromatography-mass spectrometry gonad important odorants monoli;
Notes:		"MedlineWu, Na Gu, Saiqi Tao, Ningping Wang, Xichang Ji, Siru eng Research Support, Non-U.S. Gov't 2014/06/26 J Food Sci. 2014 Jul; 79(7):C1250-9. doi: 10.1111/1750-3841.12511. Epub 2014 Jun 24"