METHOD FOR KEEPING FRESHNESS OF COFFEE, GREEN TEA, ETC.

摘要

PURPOSE: To keep the freshness of fancy foods such as coffee and green tea over a long period by preventing the oxidative degradation of the quality of the food such as freshness, taste and flavor. ;CONSTITUTION: A fancy food such as coffee and green tea is stored together with a porous aluminum material having a number of voids on the outer surface or in the material. A part or total of the voids are connected with each other. Whiskers composed mainly of aluminum oxide are formed on at least a part of the connecting pores 2 formed by the voids of the aluminum or aluminum alloy substrate 1.;COPYRIGHT: (C)1993,JPO&Japio