Enterobacteriaceae were inactivated at 4 kGy; yeast and mold growth were reduced at four and nine kGy. In this study, lycium berry specimens contained microbial counts of 3.1 x 103–1.7 x 105 CFU/g and 14 kGy was reported to be sufficient for microbial decontamination (Wen et al. 2006).