Effect of triglycerides and phospholipids on boiled chicken aroma generation
HuiQi Yeo1, Dimitris P Balagiannis2, Melissa Lim2
1Department of Food and Nutritional Sciences, University of Reading, Whiteknights, Reading RG6 6DZ, UK; Department of Food Science & Technology, National University of Singapore, Singapore 117542, Singapore.
Abstract:
Lipids, particularly polar phospholipids, are important precursors for the formation of species-specific meat aromas, but their role in the development of chicken aroma is not fully understood. Chicken triglycerides (TGC) and phospholipids (PLC) were added individually or as a mixture (1,1 w/w) to a defatted chicken meat matrix and the aroma generated during heating was extracted using Likens-Nickerson simultaneous distillation-extraction (mimicking the boiling and reduction of stock) and analysed by GC-MS. The results showed that the incorporation of PLC significantly enhanced the production of some S- and/or N-containing Maillard reaction products and most of the lipid-derived products (p < 0.05). More importantly, PLC could have an enhancement effect on the formation of key volatiles from TGC. Small quantities of phospholipids could be used to promote the oxidation of triglycerides as a useful cost-saving strategy for manufacturers.
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