A Chinese-style sausage was processed using pork as the raw material. During the whole process, 13-hydroxyoctadecadienoic acid (13-HODE), 9-hydroxyoctadecadienoic acid (9-HODE), 9,10-dihydroxyoctadecenoic acid (9,10-DHODE) and 9,10,13-trihydroxyoctadecenoic acid (9,10,13-THODE) kept increasing. All of them were found to be correlated negatively and significantly with lipoxygenases (LOX) activity, and positively and significantly with peroxide value (POV) and thiobarbituric acid reactive substances (TBARS). The ratio of 13-HODE to 9-HODE decreased slowly during drying stage and stayed higher than 2 during the whole process, and it was found to be positively and significantly with LOX activity. The ratio of variation of 13-HODE to variation of 9-HODE in every sampling period (the ratio of Δ13-HODE to Δ9-HODE) decreased sharply from 2.75 in the stage of curing for 12 h to 1.37 in the stage drying from 24 d to 30 d. The changes of ratio of 13HODE to 9-HODE and ratio of Δ13-HODE to Δ9-HODE indicated LOX-catalyzed oxidation predominated in curing and early drying stages, and such predominance was taken over by non-enzymatic oxidation during late drying stage; LOX-catalyzed oxidation was the major contributor to lipids oxidation during the whole process of the Chinese-style sausage preparing.
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| http://dx.doi.org/10.1016/j.foodchem.2019.05.183 | DOI Listing |
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