Rosario Denes K A, Furtado Maraysa R, Mutz Yhan S, Rodrigues Bruna L, Bernardo Yago A A, Baltar Jéssica D, Bernardes Patricia C, Estevez Mario, Conte-Junior Carlos A
Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Avenida Horácio Macedo, 1281, Polo de Química, bloco C, Ilha do Fundão, Cidade Universitária, Rio de Janeiro, RJ 21941-598, Brazil.
Food Science Program, Institute of Chemistry, Federal University of Rio de Janeiro, Av. Athos da Silveira Ramos, 149, Cidade Universitária, Rio de Janeiro, RJ 21941-909, Brazil.
Foods. 2020 Apr 24;9(4):536. doi: 10.3390/foods9040536.
This study aimed to use chemometrics to evaluate the influence of lipid and protein oxidation on the color and texture characteristics of Brazilian dry-cured loin (Socol, BDL). Upon exploration using hierarchical cluster analysis (HCA), two clusters were formed, indicating that higher water activity (a) was associated with higher lipid and protein oxidation. However, this fact was associated with softening and low color quality (a*, chroma, and cured color). In a more in-depth exploration, using principal component analysis (PCA) for each cluster separately, connections between protein and lipid oxidation were found in high a, as demonstrated by their statistical association. In the same way, relationships between high hardness and carbonyl contents were obtained only in high a. In addition, an overall relationship ( < 0.05) between nondestructive measurements, such as hardness, and destructive methods (malonaldehyde and carbonyl contents) demonstrate that nondestructive techniques can be promising for further studies in the method replacement field. In this study, reasonable explanations of the connections between oxidative damage and quality traits in Socol are provided.
本研究旨在运用化学计量学方法评估脂质和蛋白质氧化对巴西干腌猪里脊肉（Socol，BDL）颜色和质地特性的影响。通过层次聚类分析（HCA）进行探索时，形成了两个聚类，这表明较高的水分活度（a）与较高的脂质和蛋白质氧化相关。然而，这一事实与肉质软化和较低的颜色品质（a*、色度和腌制颜色）相关。在更深入的探索中，对每个聚类分别使用主成分分析（PCA），发现在高水分活度下蛋白质和脂质氧化之间存在联系，这通过它们的统计相关性得到证明。同样，仅在高水分活度下获得了高硬度与羰基含量之间的关系。此外，硬度等无损测量方法与破坏性方法（丙二醛和羰基含量）之间的总体关系（<0.05）表明，无损技术在方法替代领域的进一步研究中可能很有前景。本研究为Socol中氧化损伤与品质特性之间的联系提供了合理的解释。
