Food Chemistry: X (Dec 2024)
The potential correlations between cell-free extracts from Rhodobacter sphaeroides grown under low-oxygen conditions and volatile organic compounds in Chinese-style sausage
Abstract
Limited research has explored the use of Rhodobacter sphaeroides cell-free extracts (RCFE) in meat processing. To examine the potential application of RCFE in improving the flavor quality of Chinese-style sausage, in this study, we investigated the effects and mechanisms of RCFE grown under low-oxygen conditions on the flavor development of Chinese-style sausage, using GC–MS and 4D label-free proteomics. The GC–MS analysis detected 60 volatile organic compounds, with significant increases in acids, esters, and alcohols following the addition of RCFE (p 1, and VIP > 1,) in RCFE grown under low- and high-oxygen conditions. KEGG pathway analysis suggested that the RCFE grown under low-oxygen conditions may enhance alcohol and acid levels by upregulating the expression of related enzymes, which subsequently increases ester levels in the sausage.