Physical Properties and Volatile Composition Changes of Cooked Sausages Stuffed in a New Casing Formulation Based in Surfactants and Lactic Acid During Long‐Term Storage

• Autores: Chao‐Hui Feng, Cheng Li, Juan Francisco García Martín, Pradeep Kumar Malakar, Yue Yan, Yao‐Wen Liu, Wei Wang, Yun‐Tao Liu, Yong Yang
• Localización: Journal of food science, ISSN 0022-1147, Vol. 82, Nº 3, 2017, págs. 594-604
• Idioma: inglés
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• Resumen

  • The objective of this research was to investigate the effects of different modified casings and storage time on the quality attributes of cooked sausages using principal component analysis (PCA) and discriminant analysis. The effects of modifying different casing treatments on sausages’ color (L*, a*, b*), pH, and texture (hardness, springiness, cohesion, gumminess, chewiness) after 36‐d storage were estimated by PCA. According to the PCA, lightness at day 36 was correlated to sample stuffed in casing with treatment 2 (T2; soy lecithin concentration: 1:27.5, soy oil concentration: 1.25%, lactic acid concentration: 19.5 mL/kg NaCl [solid], residence time: 75 min). T2 sample can be distinguished from control sample at days 1, 8, 15, and 36 according to electronic nose system. DA was performed to determine possible different sample groups according to selected variables. Results showed that chewiness was the best discriminator for differentiating sausages stored for 15 d from other days. Chewiness and gumminess were able to discriminate sausages stuffed in casing with T2 from control sample. The relationships between modified concentrations and quality attributes of cooked sausages after 36‐d storage were also established. In this paper, the quality attributes of sausages stuffed in different modified casings stored for 36 d were analyzed by principal component analysis and discriminant analysis. Relationships between chemical and quality attributes were established. New volatile composition was generated after 15‐d storage in sausages with T2. This casing modification can be economically and competitively advantageous for sausages manufactures.