Publications by authors named "Yunqing Chong"

Background: Chinese giant salamander protein hydrolysates (CGSPH) are beneficial to human health as a result of their high content of amino acids and peptides. However, the formation of bitter peptides in protein hydrolysates (PHs) would hinder their application in food industry. The ultrasound assisted wet-heating Maillard reaction (MR) is an effective way to improve the flavor of PHs.

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A microbial starter culture is expected to improve the quality of traditional fermented fish products. was selected for grass carp fermentation due to its high proteolytic activity. To investigate its effects on muscle proteolysis of dried fermented fish, the protein profile and microbial community were analysed by using proteomics and metabolomics.

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The binding of key fishy off-flavor compounds (KFOCs), heptanal, octanal, nonanal, and 1-octen-3-ol, to silver carp proteins (total myofibrillar protein, myosin, and actin) was studied. Myosin was the primary binding receptor for all four KFOCs, and it showed the strongest binding at neutral pH and at higher ionic strengths. Thermodynamic models were applied to evaluate the number of binding sites, the binding constant, and the Gibbs free energy for the binding of the KFOCs to myosin.

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The present study investigated the volatile compounds of silver carp mince and the effects of washing processes on the integral aroma characteristics and aroma-active compounds (AACs) of the mince. 57 volatile compounds were identified by monolithic material sorptive extraction (MMSE) and GC-MS analysis, and 13 volatile compounds with odor activity values greater than 1 (OAVs > 1) were further selected as AACs contributing primarily to the integral aroma profile of silver carp. Washing methods affected the overall aroma profiles of fish samples by washing away or facilitating the release of AACs but to different extents.

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