Department of Food Quality and Safety Management, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31/33, 60-624 Poznań, Poland.
Department of Physics and Biophysics, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 31/33, 60-624 Poznań, Poland.
Molecules. 2022 Aug 16;27(16):5235. doi: 10.3390/molecules27165235.
The aim of the study was to investigate how liquid fish oil and microencapsulated oil additives influenced the rheological characteristics and the dynamics of water binding in vacuum-packed (VP) and modified-atmosphere-packed (MAP) poultry sausages during 21-day storage. In contrast to the control sample, the sausages enriched with microencapsulated fish oil (MC) were characterised by the greatest ability to accumulate deformation energy. The elastic properties of all sausage variants increased significantly in the subsequent storage periods, whereas the dynamic viscosity of the samples tended to decrease. This phenomenon was confirmed by the gradual reduction of water activity (A) in all sausages in the subsequent storage periods. The packaging method influenced the dynamics of water binding in an oil-additive-form-dependent manner. During the storage of the VP and MAP sausages, in samples with the fish oil additive the value tended to increase while the A decreased. The value in the MAP MC sample was similar. The FO additive resulted in greater mobility of both proton fractions in the MAP samples than in the VP samples. There were inverse relationships observed in the MC samples. The NMR tests showed that the VP samples with the MC additive were slightly better quality than the other samples.
本研究旨在研究液体鱼油和微胶囊油添加剂如何影响真空包装（VP）和改良气氛包装（MAP）禽肉香肠在 21 天贮藏过程中的流变特性和水分结合动力学。与对照样品相比，用微胶囊鱼油（MC）强化的香肠具有最大的积累变形能的能力。所有香肠变体的弹性特性在随后的储存期内显著增加，而样品的动态粘度趋于降低。这一现象通过在随后的储存期内所有香肠中水分活度（A）的逐渐降低得到证实。包装方法以依赖于油添加剂形式的方式影响水分结合动力学。在 VP 和 MAP 香肠的储存过程中，在添加鱼油的样品中， 值趋于增加，而 A 降低。在 MAP MC 样品中， 值相似。FO 添加剂导致 MAP 样品中两种质子分数的迁移性大于 VP 样品。在 MC 样品中观察到相反的关系。NMR 测试表明，添加 MC 添加剂的 VP 样品的质量略优于其他样品。
