  Recently is was discovered in various applications that many physical and
chemical properties of water change their temperature dependence between about
35 and 60 degrees Celsius. In particular, heat conductance, light absorption,
and surface tension all change their temperature dependence. These drastic
changes were associated with water gradually changing its mesoscopic structure:
while at the higher temperatures water is a uniform media (amorphous state), at
the temperatures below transition it consists of many nano-to-micro-scale
clusters (crystalline state). This transition is similar to the second order
phase transition. In the present paper we show that treating water with
non-thermal plasma (adding plasma-created active compounds) can lower the
temperature of the transition and thus cause a significant change in such
physical quantities as surface tension, viscosity, freezing rate, and
wettability and washability. We present analytical estimates of the transition
temperature shift based on the Debya-Huckel theory. We discuss the
produce-washing experiments that illustrate the predicted effects.
