生物阻抗作为主观,视觉评分普遍的火腿质量缺陷的替代工具
Sisay Mebre Abie1, Paweł Suliga1, Bjørg Egelandsdal2
1Faculty of Ecology and Natural Resource Management, Norwegian University of Life Sciences, 1432 Ås, Norway.
Journal of electrical bioimpedance
|July 1, 2024
概括
电阻谱学在检测猪肉质量缺陷方面表现有前途,与视觉评估有很强的相关性. 这种客观方法可以提供一种更可复制的替代方案,用于识别类似PSE的肉类.
科学领域:
- 食品科学与技术 食品科学与技术
- 动物科学动物科学
- 农业工程 农业工程
背景情况:
- 猪肉质量缺陷,如白,软,排泄性 (PSE) 类肉类,在肉类行业中构成重大挑战.
- 类似PSE的肉类的特点是变色,结构损伤和水分损失,影响消费者接受和加工.
- 目前的检测方法往往是主观的,导致可重现性差,或缺乏合适的客观仪器替代方案.
研究的目的:
- 评估猪肉质量的主观视觉评估与客观测量之间的相关性.
- 确定电阻谱学 (EIS) 作为检测类似PSE缺陷的客观工具的有效性.
- 为了比较EIS与传统的质量参数,如最终pH值和颜色 (CIELAB L*a*b*),以预测肉类缺陷.
主要方法:
- 从136只动物的猪肉肉肌肉 (Adductor, Semimembranosus) 进行视觉评分,死后24小时.
- 客观测量包括生物阻抗 (P),最终pH (pHu) 和CIELAB颜色参数.
- 使用皮尔森相关性和多变量回归来比较视觉得分与客观数据的统计分析.
主要成果:
- 生物阻抗 (P) 与视觉评分 (r = -0.46) 呈现最强的相关性,其次是最终pH (pHu,r = 0.44).
- 一个结合P,pHu和颜色参数的多变量回归模型,在视觉分数中实现了0.76的预测误差.
- 多变量模型的预测误差与主观视觉评分 (0.85) 的观察者间变异性相当.
结论:
- 电阻谱学 (P) 显示了作为一个客观的,以仪器为基础的替代方案,用于预测猪肉肉结构缺陷的潜力.
- 虽然单独P是一个强有力的指标,但将其与pH和/或颜色测量相结合,可以进一步提高预测PSE类缺陷的可能性.
- 与肉质评估中的主观视觉评估相比,像EIS这样的客观方法提供了更好的可重复性.
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