Raman Research Institute, C.V. Raman Avenue, Sadashiva Nagar, Bangalore 560 080, India.
J Colloid Interface Sci. 2012 Mar 15;370(1):124-31. doi: 10.1016/j.jcis.2011.12.070. Epub 2012 Jan 10.
In this work, we show that milk can act as an electrolytic medium to study electrochemical processes in the absence of any supporting electrolyte. The electron transfer properties of three different redox systems in bovine homogenized whole milk, skimmed milk, and reconstituted milk powder have been studied by cyclic voltammetry and impedance spectroscopy using a three-electrode system with a gold disk working electrode, a platinum sheet counter electrode, and a standard calomel reference electrode. It has been shown that the milk incredibly sustains the redox reactions in the absence of any supporting electrolyte and the electrochemical responses are comparable to those obtained when the same reactions were carried out in standard solvent preparations containing supporting electrolytes. The study clearly demonstrates the potential of developing new innovative techniques based on the intricate concepts of electrochemistry to study various aspects of milk that may help in the development of analytical sensors for the diary industry.
在这项工作中，我们表明牛奶可以作为电解质介质，在没有任何支持电解质的情况下研究电化学过程。通过使用带有金盘工作电极、铂片对电极和标准甘汞参比电极的三电极系统，使用循环伏安法和阻抗谱法研究了三种不同氧化还原系统在牛匀浆全脂奶、脱脂奶和还原奶粉中的电子转移特性。结果表明，在没有任何支持电解质的情况下，牛奶难以置信地维持着氧化还原反应，并且电化学响应与在含有支持电解质的标准溶剂制剂中进行相同反应时获得的响应相当。该研究清楚地表明，有可能基于电化学的复杂概念开发新的创新技术，以研究牛奶的各个方面，这可能有助于开发乳品行业的分析传感器。
