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Updated: May 9, 2025

NMR Spectroscopy as a Robust Tool for the Rapid Evaluation of the Lipid Profile of Fish Oil Supplements
Published on: May 1, 2017
Sensory characteristics and key odor-active compounds of oxidized Antarctic krill oil: A comparative study with
Gui-Mei Dong1, Rui-Ying Wang1, Fa-Wen Yin1
1State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China.
Abstract:
Oxidized Antarctic krill oil (AKO) has unique sensory characteristics that have not been fully elucidated. This study was aimed to explore the sensory characteristics and key odor-active compounds of oxidized AKO by comparing with oxidized fish oil (FO) through accelerating storage experiments. The sensory evaluation results exhibited that oxidized AKO had a distinct ammonia odor and oxidized FO had an obvious fishy odor. GC-MS and GC-O analysis identified 21 and 28 odor-active compounds in AKO and FO samples, respectively, and the correlation analysis showed a good correlation between sensory attributes and odor-active compounds. Trimethylamine (27.73 mg/kg) was the key odor-active compound with an ammonia odor in AKO, and not found in FO. Although AKO samples also contains odor-active compounds such as 1-penten-3-ol (4.93 mg/kg) and 1-penten-3-one (1.12 mg/kg) contributing to fishy odor in FO samples, the masking effect between the odor compounds prevented obvious fishy odor from being sensed.
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