Effects of different high electrostatic field treatment on the color changes of tomato fruit

The effects of different factors on the storage of tomato fruit (cv. ‘Zhaoyan 219’) treated with high electrostatic field were investigated in this paper. Results showed that electric field strength, action direction, the electric charge conduct and dielectric constant of gasket materials affected significantly inhibited the course of color changes from green to red of tomato fruit, thus delayed ripening and senescence of postharvest fruit (P<0.05). These factors should be considered more important. The fruit number and the metal material variation was not significant differences between samples and control group in the changes from green to red of fruit, so that the two foctors can be regarded as secondary factors. Priority design on main factor, ignore secondary factors in electrostatic field treatment during storage of tomato. In electrostatic field treatment on the storage of tomatoes, only choosing the appropriate main factors optimized electric field settings could prolong the storage period, and secondary factors of storage had no significant difference, which can failure of consideration.