Unraveling the metabolic network of volatile flavor dynamics development during the golden pomfret fermentation
Ji Wang1, Chengzhen Nie1, Hehe Tian1
1School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, 116034, China.
Abstract:
Fermented golden pomfret (FGP) flavor formation is a complex process. This study explored the FGP flavor formation pattern through multi-omics techniques. A total of 71 volatile compounds were detected. Most volatiles increased in content with fermentation time, such as 1-octen-3-ol, (E,E) 2,4-hexadienal, heptaldehyde, isoamyl acetate, 2-methyl-1-propanol. Based on species level, Citrobacter murliniae (32.25 %), Staphylococcus edaphicus (8.10 %), Leclercia adecarboxylata (11.28 %), Staphylococcus caeli (17.10 %), and Enterobacter wuhouensis (16.25 %) were the dominant bacteria at the end of fermentation. A total of 307 metabolites and 449 lipid molecules were detected in all samples, of which 125 metabolites and 97 lipids were dentified as a differential compounds. 12 metabolic pathways were mainly involved during processing. Correlation analysis revealed that differential lipids and metabolites could be converted into volatile compounds by relevant metabolic activities of the dominant bacteria. This research prov a theoretical foundation for the standardized manufacturing of fermented golden pomfret.
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