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Characterization of aroma compounds in commercialized chicken meat (Arbor acres) using gas chromatography–olfactometry–mass spectrometry (GC-O-MS)
1 , 1, 2 , * 3
1  Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
2  Department of Obstetrics Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
3  Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
Academic Editor: Michael Hässig

Abstract:

This research investigates the volatile organic compounds (VOCs) that affect the flavor and quality of Arbor acres chicken, focusing on the pectoralis muscle and hip cuts. Using gas chromatography–olfactometry–mass spectrometry (GC-O-MS) for qualitative analysis, this study compared the volatile profiles of cooked and raw chicken samples. Preparation techniques included static headspace (SHS) and headspace solid-phase microextraction (HS-SPME), with HS-SPME proving particularly effective in isolating key compounds that influence meat flavor.

The results showed that cooked chicken had higher concentrations of potentially harmful substances compared to raw samples, indicating that cooking alters meat composition. HS-SPME identified over ten VOCs associated with flavor quality and spoilage, including aldehydes like hexanal, heptanal, octanal, nonanal, and decanal. These aldehydes, known for their rancid or grassy odors, were identified through mass spectral matching, retention index (RI) values (770-890), and real-time sniffing evaluations by trained analysts.

The increased aldehyde levels in cooked chicken highlight how cooking processes can elevate both beneficial and undesirable VOCs, affecting flavor and freshness. While aldehydes are typically linked to lipid oxidation, their higher concentration in cooked samples suggests a need for optimized cooking and storage methods to preserve desired flavors and minimize off-flavors.

This study provides valuable insights into the VOC profiles of chicken meat and demonstrates the effectiveness of SHS and HS-SPME techniques in food quality analysis. The findings contribute to advancing flavor analysis and improving the sensory quality of poultry products. These insights have broad implications for future research on VOCs in meat, the development of processing standards, and quality control strategies aimed at enhancing consumer satisfaction with poultry products.

Keywords: Animal nutrition; chicken meat (Arbor acres); volatile organic compounds (VOCs); GC-O-MS; HS-SPME; SHS
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