NQO1 and cancer: Numerous studies had suggested the cancer chemoprevention of organosulfur compounds may be related to its ability to inhibit phase I enzymes (such as the cytochrome P450‐dependent monooxygenases); as well as to enhance detoxification processes by inducing expression of phase II enzymes to include GST, quinone reductase, and epoxide hydrolase (Reddy, Rao, Rivenson, & Kelloff, 1993; Georgia & Catherine, 2014; Park, Kweon, & Choi, 2002; Guyonnet, Belloir, Suschetet, Siess, & Le Bon, 2001).