PROBLEM TO BE SOLVED: To produce frozen root vegetables in which softening and fall-part are suppressed when they are subjected to heat treatment or the like, and which can keep a texture that is original to vegetables.SOLUTION: This invention relates to a method for producing frozen root vegetables that includes: a process of subjecting root vegetables to preheating treatment a process of bringing the root vegetables into contact with an acidic solution and a process of freezing. The process of bringing the root vegetables into contact with the acidic solution is provided after the process of preheating treatment and before the process of freezing. The process of preheating treatment is performed at 50 to 80°C for 1 second to 60 minutes, and the process of bringing the root vegetables into contact with the acidic solution is performed by immersing them in the acidic solution of a pH of 2.5 to 6.5.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】本発明は、加熱処理等を施した場合であっても、軟化や煮崩れを起こすことが抑制され、かつ野菜本来の食感が維持され得る冷凍根菜類を製造することを課題とする。【解決手段】本発明は、根菜類を予備加熱処理する工程と、酸性溶液に接触させる工程と、凍結する工程を含み、酸性溶液に接触させる工程は、予備加熱処理する工程の後であって、凍結する工程の前に設けられ、予備加熱処理する工程は、50~80℃で1秒~60分間加熱する工程であり、酸性溶液に接触させる工程は、pHが2.5~6.5の酸性溶液に浸漬させる工程である冷凍根菜類の製造方法に関する。【選択図】なし
