食品科学 ›› 2000, Vol. 21 ›› Issue (12): 48-51.

• 基础研究 • 上一篇    下一篇

电场对蒸馏水、豆腐冻结与解冻过程的影响

 李法德, 李里特, 辰巳英三   

  1. 中国农业大学中日食品研究中心; 日本农林水产省国际农林水产业研究中心
  • 出版日期:2000-12-15 发布日期:2011-12-05

Effect of Electrostatic Field on Process of Freezing and Thawing of Distilled Water and Tofu

 LI  Fa-De, LI  Li-Te, CHEN  Si-Ying-San   

  • Online:2000-12-15 Published:2011-12-05

摘要: 对蒸馏水和豆腐在电场作用下的冻结和解冻过程进行了研究,由实验结果可以看出:在实验条件下,电场对蒸馏水冻结和熔化过程(冰水共溶)中蒸馏水中心温度的变化影响不明显,对豆腐冻结和解冻过程中试样中心温度的变化影响也不明显。但施加电场后豆腐在冻结过程中,其外观形状发生了变化:表面细腻、不破裂,在豆腐的底部与容器(培养皿)之间发生了翘起,其原因可能是在电场作用下,豆腐中的水分向豆腐的上表面发生了迁移。因此,有必要进一步研究。

关键词:  , 静电场; 豆腐; 蒸馏水; 冻结; 解冻;

Abstract: In this paper, the process of the freezing and the thawing of the distilled water and the tofu had been studied in the electrostatic field. The experiment results showed that the effect of the electrostatic field on the change of the center temperature of the distilled water were not noticeable in the process of the distilled water freezing and the ice melting in the experiments. The effect of the electrostatic field on the change of the center temperature of the tofu in the process of the freezing and the thawing was also not noticeable, but the shape of the sample tofu has changed in the experiment because of the effect of the electrostatic field. The top was fine and smooth, better than the control抯. There was no split on the top, but the upwarp of the tofu at the bottom of the glass incubator has occurred because of the electrostatic field. The author analyzed that the main reason was possibly that the water in the tofu perhaps moved toward the top of the tofu in the electrostatic field. Thus a further study on this field is needed.

Key words: Electrostatic field Tofu Distilled water Freezing Thawing