Diagram 8 shows a method of food preservation.

图8显示保存食物的一种方法。

From food preservation to healthcare this technology works.

从保健食品保存到这一技术工程。

Hurdle effect is the essential events of food preservation.

栅栏效应是食品保存的根本所在。

Hurdle technology is the essential events of food preservation.

栅栏技术是食品保藏的根本所在。

Food preservation techniques were a necessity as refrigeration did not exist.

食品保鲜技术进行了必要的冷藏并不存在。