A method for prolonging packaged food preservation is provided, including: sealing food in a plastic container having oxygen percentage being less than 3% and other gases heating the plastic container with electromagnetic wave so that the food temperature reaching at least 38℃ and keeping the plastic container and the food at 38℃ or above for at least an hour.一種延長包裝食物保存期限的方法,包含:將食物密封在含氧量體積比低於3%與其它氣體的一塑膠容器內;利用電磁波對此塑膠容器加熱,使此食物的溫度達到38℃以上;並維持此塑膠容器與此食物的溫度至少1個小時。110...將食物密封在含氧量體積比低於3%與其它氣體的一塑膠容器內120...利用電磁波對此塑膠容器加熱,使此食物的溫度達到38℃以上130...並維持此塑膠容器與此食物的溫度至少1個小時
