食品科学 ›› 2017, Vol. 38 ›› Issue (24): 208-212.doi: 10.7506/spkx1002-6630-201724033

• 安全检测 • 上一篇    下一篇

阻抗法检测鸡蛋新鲜度

余锦露,张磊,孙雅静,张璟,郭爱玲   

  1. (1.华中农业大学食品科技学院,湖北?武汉 430070;2.国家蛋品加工技术研发分中心,湖北?武汉 430070)
  • 出版日期:2017-12-25 发布日期:2017-12-07
  • 基金资助:
    公益性行业(农业)科研专项(201303084)

Detection of Egg Freshness Using Impedance Method

YU Jinlu, ZHANG Lei, SUN Yajing, ZHANG Jing, GUO Ailing   

  1. (1. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;2. National Research and Development Center for Egg Processing, Wuhan 430070, China)
  • Online:2017-12-25 Published:2017-12-07

摘要: 鸡蛋在贮存过程中会发生一系列物理化学变化。在实际生活中,多以感官来衡量鸡蛋的新鲜度。本实验通过设立不同贮存条件,对不同温度(4、25?℃)、不同相对湿度(75%、85%、98%)组合下的6?组不同条件贮存过程中鸡蛋的哈夫单位、蛋黄指数、pH值以及相对应的阻抗进行检测。结果表明,在不同条件贮存过程中鸡蛋新鲜度指标哈夫单位、蛋黄指数、pH值与阻抗之间表现出了较好的相关性,建立标准曲线,通过阻抗值的大小对应标准曲线可计算鸡蛋新鲜度。阻抗法检测鸡蛋新鲜度具有操木作简便、快速、结果准确等优点,可为蛋品企业鸡蛋的保存提供一定的理论依据。

关键词: 鸡蛋, 新鲜度, 哈夫单位, 蛋黄指数, pH值, 阻抗法

Abstract: A series of physical and chemical changes occur during the storage of eggs. In reality, the freshness of eggs is mostly measured by sensory evaluation. In this study, we tested the freshness of eggs stored under different conditions of temperature (4 and 25 ℃) and humidity (RH 75%, RH 85%, and RH 98%) by Haugh unit, egg yolk index, pH and impedance. The results showed good correlations of impedance with three other properties. The correlations were plotted, indicating that the freshness of eggs can be determined by using impedance values. The method could be performed simply and rapidly with accurate results, providing a promising tool for the detection of egg freshness in the egg industry.

Key words: egg, freshness, Haugh unit, egg yolk index, pH, impedance

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