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Molecules

Title:		Analysis of Volatile Compounds in Sea Bass (Lateolabrax japonicus) Resulting from Different Slaughter Methods Using Electronic-Nose (E-Nose) and Gas Chromatography-Ion Mobility Spectrometry
Author(s):		Wang Y; Li J; Wu Y; Yang S; Wang D; Liu Q;
Address:		"Key Lab of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, National Research and Development Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China. Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China. College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China. College of Food Science and Engineering, Lingnan Normal University, Zhanjiang 524048, China. Zhuhai Qiangjing Food Co., Ltd., Zhuhai 519100, China"
Journal Title:		Molecules
Year:		2021
Volume:		20210928
Issue:		19
Page Number:		-
DOI:		10.3390/molecules26195889
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"Sea bass (Lateolabrax japonicus) is known for its unique flavor and high nutritional value. In this study, the influence of slaughter methods on the volatile compounds (VOCs) in sea bass was investigated using electronic nose (E-nose) technology and gas chromatography-ion mobility spectrometry (GC-IMS). VOCs in raw and cooked sea bass resulting from different slaughter methods were effectively distinguished using both techniques. Aldehydes, ketones, and alcohols were associated with the basic flavor of sea bass, whereas esters, organic acids, and furans enriched the aroma. In raw sea bass, the fishy odor was the strongest in the HSD group (head shot control death), followed by that in the IFD (ice faint to death) and BDS (bloodletting to death) groups. The VOC content increased and stabilized after steaming, enhancing pleasant odors such as fatty and fruity aromas. In cooked sea bass, the content of diacetyl and ethanol was the highest in the EAD group (eugenol anesthesia to death), which may be a residue of eugenol, imparting a distinct irritating chemical odor. Furthermore, abundant (E)-2-octenal, 2-heptanone, benzaldehyde, and esters in the BDS group imparted a strong, pleasant aroma. The findings indicate that heart puncture and bloodletting is the preferred slaughter method to maintain sea bass quality, providing new insights into the volatile changes in sea bass induced by different slaughter methods"
Keywords:		"Abattoirs/statistics & numerical data Animals Bass/*metabolism Electronic Nose/*statistics & numerical data Euthanasia, Animal/*methods Gas Chromatography-Mass Spectrometry/*methods Ion Mobility Spectrometry/*methods Seafood/*analysis Volatile Organic Com;"
Notes:		"MedlineWang, Yueqi Li, Jinxing Wu, Yanyan Yang, Shengyuan Wang, Di Liu, Qiang eng 32001733/National Natural Science Foundation of China/ Switzerland 2021/10/14 Molecules. 2021 Sep 28; 26(19):5889. doi: 10.3390/molecules26195889"