GM rice (Oryza sativa L.) with Cry1Ab and non-transgenic rice(cv. Minghui 86) were obtained from Fujian Academy of Agricultural Sciences (Fuzhou, China). Sucrose, potato starch, salt, and
sweet rice wine starter (containing Rhizopus for fermentation)were purchased from a local market (Beijing, China). Realtime PCR was performed on all samples to ensure that they did not contain any transgenic components.