This invention relates to an ultra low temperature freezing pest control method, mainly by carrying out ultra low temperature freezing to the packaged rice, which is produced by husking the unhusked rice into white rice, brown rice, or embryo rice and then packaging, to completely freeze the remained eggs and rice worms to death at ultra low temperature from minus 30 DEG C to minus 35 DEG C. Utilizing ultra low temperature freezing manner will not affect the flavor of rice, be able to solve the existing problem of failing to completely remove eggs and rice worms by using far infrared, microwave or drug smoking to the packaged rice, and solve the problem of the affected flavor of rice caused by heating in the existing pest control method.本發明係一種超低溫冷凍除蟲法,主要是於稻穀碾製成白米、糙米或胚芽米並經包裝為包裝米之後,將包裝米進行超低溫冷凍,利用零下30℃至零下35℃的超低溫度完全凍死該包裝米中殘存的蟲卵或米蟲,利用超低溫冷凍方式不會影響米的風味,解決現有包裝米以遠紅外線、微波或藥物煙燻無法完全去除蟲卵或米蟲的問題,以及現有除蟲方式會因加熱而影響米的風味的問題。
