Sun Zongbao, Liang Liming, Li Junkui, Liu Xiaoyu, Sun Jian, Zou Xiaobo, Zuo Min, Guo Zhiming
School of Food and Biological Engineering Jiangsu University Zhenjiang China.
School of Electrical and Information Engineering Jiangsu University Zhenjiang China.
Food Sci Nutr. 2020 Jan 21;8(2):862-869. doi: 10.1002/fsn3.1362. eCollection 2020 Feb.
To establish a rapid, convenient, and low-cost method to assess the quality of Atlantic salmon, we analyzed the impedance between 10 and 10 Hz for Atlantic salmon/rainbow trout, chilled/frozen-thawed salmon, and fresh/stale salmon. We combined chemometrics with impedance properties to create a multi-quality index for Atlantic salmon. The accuracy of all three models established can reach 100% in distinguishing Atlantic salmon from rainbow trout and distinguishing chilled salmon from frozen-thawed salmon. We applied a partial least squares method to create a quantitative prediction model of bioimpedance spectroscopy and the value of total volatile basic nitrogen. The correlation coefficients of the training and test sets were 0.9447 and 0.9387. Our results showed that the combination of impedance properties and chemometrics was a simple and effective application to evaluate Atlantic salmon quality.
为建立一种快速、便捷且低成本的大西洋鲑鱼质量评估方法，我们分析了大西洋鲑鱼/虹鳟鱼、冷藏/冻融鲑鱼以及新鲜/不新鲜鲑鱼在10⁶至10 Hz之间的阻抗。我们将化学计量学与阻抗特性相结合，以创建大西洋鲑鱼的多质量指标。所建立的所有三个模型在区分大西洋鲑鱼和虹鳟鱼以及区分冷藏鲑鱼和冻融鲑鱼方面的准确率均可达到100%。我们应用偏最小二乘法创建了生物阻抗光谱与总挥发性盐基氮值的定量预测模型。训练集和测试集的相关系数分别为0.9447和0.9387。我们的结果表明，阻抗特性与化学计量学的结合是评估大西洋鲑鱼质量的一种简单有效的应用方法。
