... contami-nation of fruit and fruit juice involves care at all stages of production,including preharvest practices of planting, growing of fruit, harvesting, post-harvest handling, washing, and cooling and ... 90% of their energy at a wavelength of 25 3.7nanometers. Exposure of bacteria to UV results in cross-linking of thethymine dimers of the DNA in the organism, preventing repair of injury and reproduction. ... 6, 20 03 9 :21 AM© 20 03 by CRC Press LLC 29 . Dock, L.L., Floros, J.D., and Linton, R.H., Heat inactivation of Escherichiacoli O157:H7 in apple cider containing malic acid, sodium benzoate and potassium...