OCR Text |
Show Preserving Foods. A new method has been disecovered, says an English paper, for preserving various food products, especially milk powder, the idea being based upon nh'clng the substance in a sealed vessel ves-sel or packing case with inert gas, so that this latter prevents the usual spoiling of contents by the action of the air. In the French patented process pro-cess the milk powder is packed in metal boxes of convenient size, which are entirely sealtJ except for a pinhole pin-hole that is left at the top. A number of such boxes are put In a chamber and the air is exhausted by means of an air pump. When this operation Is finished valves are opened which allow nitrogen to enter the chamber nnd fill up the several boxes. When opening up the chamber the boxes are quickly removed and the pinhole soldered before be-fore an appreciable amount of air has time to enter. In this way the contents con-tents of the boxes are kept in un atmosphere at-mosphere of inert gas, and the process is thus practical from an industrial standpoint. |