Inactivation of Salmonella Typhimurium and Escherichia coli O157:H7 on black pepper powder using UV-C UV-A and TiO2 coating

摘要

Inactivation effect of UV-A, UV-C, and TiO coating against Typhimurium inoculated on black pepper powder for 0, 30, 60, 90, 120, 150, and 180 min. Mean ± standard deviation obtained in two experiments, one of two experiments in duplicated (n = 3). The treatment involving TiO coating is ( ), and the treatment excluding TiO coating is ( ). Different capital letters indicate significant differences (  1R-con means control group that was treated using only a roaster machine. UA means a group that was treated by UV-A alone. UC means a group that was treated by UV-C alone. UAC means a group that was treated by UV-A and UV-C simultaneously